Flyby improvements (#2100)

Co-authored-by: Martin Robertz <[email protected]>

.editorconfig

@@ -22,6 +22,8 @@ indent_size = 2
 trim_trailing_whitespace = false
 
 [*.java]
+max_line_length = 240
+ij_java_wrap_long_lines = false
 ij_java_use_single_class_imports = true
 ij_java_class_count_to_use_import_on_demand = 999
 ij_java_names_count_to_use_import_on_demand = 999

.github/scripts/umbra-build.sh

@@ -0,0 +1,13 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+REPO_ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")/../.." && pwd)"
+cd "$REPO_ROOT/umbra"
+
+gradle_args=(:compileJava :compileMixinJava :test --no-daemon --console=plain --stacktrace)
+if [[ -n "${UMBRA_GRADLE_ARGS:-}" ]]; then
+    read -ra extra_args <<< "$UMBRA_GRADLE_ARGS"
+    gradle_args+=("${extra_args[@]}")
+fi
+
+sh ./gradlew "${gradle_args[@]}"

.github/workflows/umbra-build.yml

@@ -0,0 +1,25 @@
+name: Umbra build
+
+on:
+  pull_request:
+    branches: [ master, main ]
+  push:
+    branches: [ master, main ]
+
+jobs:
+  umbra-build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v5
+        with:
+          fetch-depth: 0
+      - uses: actions/setup-java@v5
+        with:
+          distribution: zulu
+          java-version: |
+            21
+            25
+      - uses: gradle/actions/setup-gradle@v5
+        with:
+          validate-wrappers: true
+      - run: .github/scripts/umbra-build.sh

.gitignore

@@ -1,5 +1,6 @@
 .gradle
 .kotlin/
+.lwjgl/
 .settings
 /.idea/
 /.vs/
@@ -43,5 +44,6 @@ tracy-client/src/main/resources/natives/
 tracy-client/angelica/
 dist/tracy-natives/
 *.tracy
+*.jfr
 
 tracy-client/angelica/

build.gradle.kts

@@ -1,19 +1,16 @@
 import com.modrinth.minotaur.TaskModrinthUpload
 import net.darkhax.curseforgegradle.TaskPublishCurseForge
-import xyz.wagyourtail.jvmdg.gradle.flags.DowngradeFlags
-import xyz.wagyourtail.jvmdg.gradle.task.DowngradeJar
 import xyz.wagyourtail.jvmdg.gradle.task.files.DowngradeFiles
 
 plugins {
     id("com.gtnewhorizons.gtnhconvention")
 }
 
-tasks.withType<DowngradeJar>().configureEach { logLevel.set("FATAL") }
-tasks.withType<DowngradeFiles>().configureEach { logLevel.set("FATAL") }
 val lwjglDebug = false
 val gpuHud = false
 val renderdoc = false
 val rgp = false
+extra["lwjglDebug"] = lwjglDebug
 
 minecraft   {
     extraRunJvmArguments.add("-Dangelica.debug.testBlocks=true")
@@ -24,24 +21,13 @@ minecraft   {
 
     extraRunJvmArguments.add("-Dsun.net.client.defaultConnectTimeout=5000")
     extraRunJvmArguments.add("-Dsun.net.client.defaultReadTimeout=5000")
-    // TODO: Remove once GTNHGradle includes shaderc/spvc in the default lwjgl3Bindings list
-    lwjgl3Bindings.addAll("shaderc", "spvc")
-    lwjgl3Version = libs.versions.lwjgl3.get()
 //    extraRunJvmArguments.addAll("-Dlegacy.debugClassLoadingSave=true")
 //    extraRunJvmArguments.addAll("-Drfb.dumpLoadedClasses=true", "-Drfb.dumpLoadedClassesPerTransformer=true")
     //extraRunJvmArguments.add("-Dangelica.debug.redirectorLogspam=true")
 
 }
 
-// Forward -Dangelica.* from the gradle invocation to the client
-tasks.withType<JavaExec>().matching { it.name.startsWith("runClient") }.configureEach {
-    for ((key, value) in System.getProperties()) {
-        val name = key.toString()
-        if (name.startsWith("angelica.")) {
-            jvmArgs("-D$name=$value")
-        }
-    }
-}
+apply(from = "gradle/angelica-run-common.gradle.kts")
 
 if (gpuHud) {
     tasks.withType<JavaExec>().matching { it.name.startsWith("runClient") }.configureEach {
@@ -57,47 +43,12 @@ if (gpuHud) {
 
 configurations.all {
     exclude(group = "com.github.GTNewHorizons", module = "Angelica")
-    resolutionStrategy.dependencySubstitution {
-        substitute(module("com.github.GTNewHorizons:lwjgl3ify"))
-            .using(module("com.github.GTNewHorizons:lwjgl3ify:${libs.versions.lwjgl3ify.get()}"))
-    }
-}
-
-// lwjgl3ify pulls a pinned lwjgl 3.4.2 snapshot transitively from here.
-repositories {
-    maven {
-        name = "Maven Central Snapshots"
-        url = uri("https://central.sonatype.com/repository/maven-snapshots/")
-        content { includeGroup("org.lwjgl") }
-    }
 }
 
 val osName = System.getProperty("os.name").lowercase()
 val isMacOs = org.gradle.internal.os.OperatingSystem.current().isMacOsX
 val isMacOsArm64 = isMacOs && System.getProperty("os.arch") == "aarch64"
 
-tasks.withType<JavaExec>().configureEach {
-    if (name.startsWith("runClient") && name != "runClient") {
-        if (isMacOs) {
-            // SDL3 / Cocoa / Metal must initialize on the JVM main thread.
-            jvmArgs("-XstartOnFirstThread")
-            jvmArgs("-Dangelica.sdlgpu.encoderAssertions=" + if (lwjglDebug) "fatal" else "warn")
-            if (lwjglDebug) {
-                environment("METAL_DEVICE_WRAPPER_TYPE", "1")
-                environment("METAL_DEBUG_ERROR_MODE", "0")
-                environment("MTL_SHADER_VALIDATION", "1")
-                environment("MTL_SHADER_VALIDATION_REPORT_TO_STDERR", "1")
-                environment("MTL_DEBUG_LAYER", "1")
-                environment("MallocScribble", "1")
-                environment("MallocPreScribble", "1")
-                environment("MallocGuardEdges", "1")
-                environment("MallocStackLogging", "1")
-                environment("MallocStackLoggingNoCompact", "1")
-            }
-        }
-    }
-}
-
 // Linux runClient: RenderDoc frame capture (F12) OR RADV RGP/SQTT capture. Mutually exclusive; RGP wins
 tasks.withType<JavaExec>().configureEach {
     if (name.startsWith("runClient") && !isMacOs && !osName.contains("windows")) {
@@ -126,14 +77,6 @@ tasks.withType<JavaExec>().configureEach {
     }
 }
 
-tasks.processResources {
-    val projectVersion = project.version.toString()
-    inputs.property("version", projectVersion)
-    filesMatching("META-INF/rfb-plugin/*") {
-        expand("version" to projectVersion)
-    }
-}
-
 tasks.register<Copy>("copyDependencies") {
     group = "Angelica"
     description = "Collect dependencies into the testDependencies folder"
@@ -206,6 +149,7 @@ fun Test.configureAngelicaJava8() {
 tasks.test {
     useJUnitPlatform { excludeTags = setOf("gl-core") }
     configureAngelicaJava8()
+    jvmArgs("-Dceleritas.lwjglService=org.taumc.celeritas.lwjgl.HeadlessTestLWJGLService")
     dependsOn(":glsm:classes", ":lwjgl3-backend:classes", ":sdl-gpu:classes")
 }
 
@@ -233,29 +177,7 @@ val glCoreTest by tasks.registering(Test::class) {
 
 tasks.test { finalizedBy(glCoreTest) }
 
-tasks.shadowJar {
-    dependsOn(embedOnly)
-    from(embedOnly.map(::zipTree))
-
-    duplicatesStrategy = DuplicatesStrategy.INCLUDE
-    mergeServiceFiles()
-
-    minimize {
-        exclude(project(rootProject.path))
-        exclude(project(":glsm"))
-        exclude(project(":lwjgl3-backend"))
-        exclude(project(":sdl-gpu"))
-        exclude(dependency("org.taumc:.*:.*"))
-        exclude(dependency("org.antlr:.*:.*"))
-    }
-
-    relocate("com.mitchej123", "com.mitchej123")
-    relocate("org.embeddedt", "org.embeddedt")
-    relocate("com.gtnewhorizons.angelica.config", "com.gtnewhorizons.angelica.config")
-    relocate("com.gtnewhorizons.angelica.glsm", "com.gtnewhorizons.angelica.glsm")
-    relocate("com.gtnewhorizons.angelica.lwjgl3", "com.gtnewhorizons.angelica.lwjgl3")
-    relocate("com.gtnewhorizons.angelica.sdlgpu", "com.gtnewhorizons.angelica.sdlgpu")
-}
+apply(from = "gradle/angelica-shadow-common.gradle.kts")
 
 tasks.withType<TaskPublishCurseForge>().configureEach {
     uploadArtifacts.forEach { it.addGameVersion("Client") }

dependencies.gradle.kts

@@ -52,8 +52,8 @@ configurations.configureEach {
 }
 
 DependencyHandlerScope.of(dependencies).apply {
-    compileOnly("com.github.GTNewHorizons:Hodgepodge:2.7.187:dev")
-    runtimeOnlyNonPublishable("com.github.GTNewHorizons:Hodgepodge:2.7.187:dev")
+    compileOnly("com.github.GTNewHorizons:Hodgepodge:2.7.197:dev")
+    runtimeOnlyNonPublishable("com.github.GTNewHorizons:Hodgepodge:2.7.197:dev")
 
     runtimeOnlyNonPublishable(rfg.deobf("curse.maven:biomes-o-plenty-220318:2499612"))
 
@@ -104,7 +104,6 @@ DependencyHandlerScope.of(dependencies).apply {
 
     // Celeritas (isTransitive=false: deps provided by GTNHLib/runtime)
     embedOnly(libs.celeritas.common) { isTransitive = false }
-    embedOnly(libs.celeritas.lwjgl2.service) { isTransitive = false }
 
     // Because who doesn't want NEI
     devOnlyNonPublishable("com.github.GTNewHorizons:NotEnoughItems:2.8.109-GTNH:dev")
@@ -177,7 +176,7 @@ DependencyHandlerScope.of(dependencies).apply {
     compileOnly("com.github.GTNewHorizons:BetterCrashes:1.4.5-GTNH:dev")
 
     // Distant Horizons
-    compileOnly("maven.modrinth:DistantHorizonsApi:5.1.0")
+    compileOnly(libs.distant.horizons.api)
 
     compileOnly("mega:fluidlogged-mc1.7.10:0.1.2")
 
@@ -208,5 +207,6 @@ afterEvaluate {
 
         testRuntimeOnly(libs.fastutil)
         testRuntimeOnly(libs.joml)
+        testImplementation(libs.distant.horizons.api)
     }
 }

glsm/build.gradle.kts

@@ -46,6 +46,27 @@ tasks.withType<Jar>().configureEach {
     exclude("net/minecraft/**")
 }
 
+val stubsElements by configurations.creating {
+    isCanBeConsumed = true
+    isCanBeResolved = false
+    attributes {
+        attribute(Usage.USAGE_ATTRIBUTE, objects.named(Usage::class.java, Usage.JAVA_RUNTIME))
+        attribute(Category.CATEGORY_ATTRIBUTE, objects.named(Category::class.java, Category.LIBRARY))
+        attribute(rfgObfAttr, "mcp")
+        attribute(rfgTransformedAttr, true)
+    }
+    outgoing {
+        capability("${project.group}:glsm-stubs:${project.version}")
+    }
+}
+
+artifacts {
+    add(stubsElements.name, sourceSets["stubs"].java.classesDirectory) {
+        type = "java-classes-directory"
+        builtBy(tasks.named("stubsClasses"))
+    }
+}
+
 repositories {
     maven {
         name = "Mojang"
@@ -114,6 +135,7 @@ dependencies {
     testRuntimeOnly(libs.lwjgl3) { artifact { classifier = lwjglNatives } }
     // @Lwjgl3Aware annotation
     compileOnly(libs.lwjgl3ify) { artifact { classifier = "dev" }; isTransitive = false }
+    compileOnly(libs.retrofuturabootstrap) { isTransitive = false }
 
     compileOnly(libs.lombok) { isTransitive = false }
     annotationProcessor(libs.lombok)
@@ -140,7 +162,6 @@ dependencies {
     testRuntimeOnly(libs.junit.platform.launcher)
     testRuntimeOnly(libs.log4j.core)
     testImplementation(libs.celeritas.common) { isTransitive = false }
-    testRuntimeOnly(libs.celeritas.lwjgl2.service) { isTransitive = false }
     testRuntimeOnly(libs.jvmdowngrader.java.api) { artifact { classifier = "downgraded-8" } }
     testRuntimeOnly(libs.commons.lang3)
 }

glsm/src/main/java/com/gtnewhorizons/angelica/config/SystemProperties.java

@@ -52,6 +52,9 @@ public final class SystemProperties {
     public static final int FLYBY_LENGTH = Integer.getInteger("angelica.flyby.length", 0); // Blocks for moving routes, ticks for stationary
     public static final double FLYBY_SPEED = parseDouble("angelica.flyby.speed"); // Travel speed in blocks per tick
     public static final boolean FLYBY_EXIT_WHEN_DONE = Boolean.getBoolean("angelica.flyby.exitWhenDone");
+    public static final long FLYBY_TIME_OF_DAY = Math.floorMod(Long.getLong("angelica.flyby.timeOfDay", 6000L), 24000L);
+    public static final String FLYBY_COMMANDS = System.getProperty("angelica.flyby.commands", "");
+    public static final FlybyPacing FLYBY_PACING = parseEnum("angelica.flyby.pacing", FlybyPacing.UNCAPPED, FlybyPacing.UNCAPPED, FlybyPacing.class);
 
     // Debug
     public static final boolean LWJGL_DEBUG = Boolean.getBoolean("org.lwjgl.util.Debug");
@@ -60,19 +63,26 @@ public final class SystemProperties {
     public static final boolean ENABLE_TEST_BLOCKS = Boolean.getBoolean("angelica.debug.testBlocks");
     public static final boolean DUMP_CLASS = Boolean.getBoolean("angelica.debug.dumpClass");
     private static final boolean DUMP_SHADERS_PROP = Boolean.getBoolean("angelica.debug.dumpShaders");
+    private static final boolean DEBUG_TOOLING_PROP = Boolean.getBoolean("angelica.debug.tooling");
     public static final boolean REDIRECTOR_LOGSPAM = Boolean.getBoolean("angelica.debug.redirectorLogspam");
     public static final boolean DEBUG_DISPLAY_LISTS = Boolean.getBoolean("angelica.debug.displayLists");
+    public static final boolean FFP_TRACE = Boolean.getBoolean("angelica.debug.ffpTrace");
     public static final boolean LOG_DISPLAY_LIST_COMPILATION = Boolean.getBoolean("angelica.debug.displayLists.compilation");
     public static final boolean FORCE_ORPHAN_STREAMING = Boolean.getBoolean("angelica.debug.forceOrphanStreaming");
     public static final String SHADER_DUMP_ROOT = "angelica_dumps";
 
     // Set by us, read by celeritas
     public static final String KEY_CELERITAS_ENABLE_GL_DEBUG = "celeritas.enableGLDebug";
+    public static final String KEY_CELERITAS_LWJGL_SERVICE = "celeritas.lwjglService";
 
     public static boolean dumpShaders() {
         return DUMP_SHADERS_PROP || isDeobf();
     }
 
+    public static boolean debugTooling() {
+        return DEBUG_TOOLING_PROP || isDeobf();
+    }
+
     public static Path shaderDumpDir(String phase) {
         return dumpShaders() ? Paths.get(SHADER_DUMP_ROOT, phase) : null;
     }
@@ -102,6 +112,11 @@ public final class SystemProperties {
         FATAL
     }
 
+    public enum FlybyPacing {
+        UNCAPPED,
+        CONFIGURED
+    }
+
     private static <E extends Enum<E>> E parseEnum(String key, E whenAbsent, E whenInvalid, Class<E> type) {
         final String raw = System.getProperty(key);
         if (raw == null || raw.isEmpty()) return whenAbsent;

glsm/src/main/java/com/gtnewhorizons/angelica/glsm/GLContextState.java

@@ -27,6 +27,7 @@ import com.gtnewhorizons.angelica.glsm.states.ClipPlaneState;
 import com.gtnewhorizons.angelica.glsm.states.Color4;
 import com.gtnewhorizons.angelica.glsm.states.PixelUnpackState;
 import com.gtnewhorizons.angelica.glsm.states.ImageUnitArray;
+import com.gtnewhorizons.angelica.glsm.states.SamplerUnitArray;
 import com.gtnewhorizons.angelica.glsm.states.TextureUnitArray;
 import it.unimi.dsi.fastutil.ints.IntArrayList;
 import it.unimi.dsi.fastutil.ints.IntStack;
@@ -101,6 +102,7 @@ class GLContextState {
     public final IntegerStateStack shadeModelState = new IntegerStateStack(GL11.GL_SMOOTH);
     public final TextureUnitArray textures = new TextureUnitArray();
     public final ImageUnitArray imageUnits = new ImageUnitArray();
+    public final SamplerUnitArray samplerUnits = new SamplerUnitArray();
     public final BlendStateStack blendState = new BlendStateStack();
     public final BooleanStateStack blendMode = track(new BooleanStateStack(GL11.GL_BLEND));
     public final BooleanStateStack scissorTest = track(new BooleanStateStack(GL11.GL_SCISSOR_TEST));

glsm/src/main/java/com/gtnewhorizons/angelica/glsm/GLDebug.java

@@ -564,7 +564,7 @@ public final class GLDebug {
     /**
      * Overload that lets you gate the String concat behind the debugState
      */
-    public static void pushGroup(String prefix, int value) {
+    public static void pushGroup(String prefix, long value) {
         if (debugState != null && Thread.currentThread() == GLStateManager.getMainThread()) {
             debugState.pushGroup(prefix + value);
         }

glsm/src/main/java/com/gtnewhorizons/angelica/glsm/GLStateManager.java

@@ -52,6 +52,7 @@ import com.gtnewhorizons.angelica.glsm.states.ClipPlaneState;
 import com.gtnewhorizons.angelica.glsm.states.Color4;
 import com.gtnewhorizons.angelica.glsm.states.PixelUnpackState;
 import com.gtnewhorizons.angelica.glsm.states.PolygonState;
+import com.gtnewhorizons.angelica.glsm.states.SamplerUnitArray;
 import com.gtnewhorizons.angelica.glsm.states.ImageUnitBinding;
 import com.gtnewhorizons.angelica.glsm.states.TextureBinding;
 import com.gtnewhorizons.angelica.glsm.states.TextureUnitArray;
@@ -91,6 +92,7 @@ import org.lwjgl.opengl.GL21;
 import org.lwjgl.opengl.GL30;
 import org.lwjgl.opengl.GL31;
 import org.lwjgl.opengl.GL32;
+import org.lwjgl.opengl.GL33;
 import org.lwjgl.opengl.GLContext;
 import org.lwjgl.opengl.KHRDebug;
 import org.lwjgl.opengl.KHRDebugCallback;
@@ -493,7 +495,9 @@ public class GLStateManager {
 
     public static void initialize(GLSMInitConfig config) {
         initConfig = config;
-        preInit(config.getDisplayWidth(), config.getDisplayHeight());
+        final int width = config.getDisplayWidth() > 0 ? config.getDisplayWidth() : Display.getWidth();
+        final int height = config.getDisplayHeight() > 0 ? config.getDisplayHeight() : Display.getHeight();
+        preInit(width, height);
         init(config.getPostInitCallback());
     }
 
@@ -1052,6 +1056,8 @@ public class GLStateManager {
             case GL30.GL_DRAW_FRAMEBUFFER_BINDING -> glCtx.drawFramebuffer;
             case GL30.GL_READ_FRAMEBUFFER_BINDING -> glCtx.readFramebuffer;
 
+            case GL33.GL_SAMPLER_BINDING -> glCtx.samplerUnits.get(glCtx.activeTextureUnit.getValue());
+
             default -> switch (pname) {
                 case GL11.GL_FOG_MODE -> glCtx.fogState.getFogMode();
                 case GL11.GL_LINE_STIPPLE_PATTERN -> glCtx.lineState.getStipplePattern() & 0xFFFF;
@@ -1304,6 +1310,29 @@ public class GLStateManager {
         }
     }
 
+    public static void glEnablei(int cap, int index) {
+        RENDER_BACKEND.enablei(cap, index);
+        markIndexedCapUnknown(cap);
+    }
+
+    public static void glDisablei(int cap, int index) {
+        RENDER_BACKEND.disablei(cap, index);
+        markIndexedCapUnknown(cap);
+    }
+
+    private static void markIndexedCapUnknown(int cap) {
+        if (cap == GL11.GL_BLEND) {
+            ctx().blendMode.setUnknownState();
+        } else if (cap == GL11.GL_SCISSOR_TEST) {
+            ctx().scissorTest.setUnknownState();
+        }
+    }
+
+    public static void glBlendFuncSeparatei(int buf, int srcRGB, int dstRGB, int srcAlpha, int dstAlpha) {
+        RENDER_BACKEND.blendFuncSeparatei(buf, srcRGB, dstRGB, srcAlpha, dstAlpha);
+        ctx().blendState.setFuncUnknownState();
+    }
+
     public static void enableBlend() {
         final RecordMode mode = DisplayListManager.getRecordMode();
         if (mode != RecordMode.NONE) {
@@ -1449,6 +1478,7 @@ public class GLStateManager {
         final boolean caching = isCachingEnabled();
         if (GLSMConfig.hudCacheOverride) {
             glCtx.blendState.setAll(srcFactor, dstFactor, GL11.GL_ONE, GL11.GL_ONE_MINUS_SRC_ALPHA);
+            glCtx.blendState.clearFuncUnknownState();
             RENDER_BACKEND.blendFuncSeparate(srcFactor, dstFactor, GL11.GL_ONE, GL11.GL_ONE_MINUS_SRC_ALPHA);
             if (GLSMHooks.BLEND_FUNC_CHANGE.hasListeners()) {
                 GLSMHooks.blendFuncChangeEvent.srcRgb = srcFactor;
@@ -1465,8 +1495,10 @@ public class GLStateManager {
                 || glCtx.blendState.getSrcRgb() != srcFactor
                 || glCtx.blendState.getDstRgb() != dstFactor
                 || glCtx.blendState.getSrcAlpha() != srcFactor
-                || glCtx.blendState.getDstAlpha() != dstFactor) {
+                || glCtx.blendState.getDstAlpha() != dstFactor
+                || glCtx.blendState.isFuncUnknown()) {
             glCtx.blendState.setAll(srcFactor, dstFactor, srcFactor, dstFactor);
+            glCtx.blendState.clearFuncUnknownState();
             RENDER_BACKEND.blendFunc(srcFactor, dstFactor);
             if (GLSMHooks.BLEND_FUNC_CHANGE.hasListeners()) {
                 GLSMHooks.blendFuncChangeEvent.srcRgb = srcFactor;
@@ -1529,8 +1561,9 @@ public class GLStateManager {
         }
         final boolean caching = isCachingEnabled();
         final boolean bypass = !caching;
-        if (bypass || glCtx.blendState.getSrcRgb() != srcRgb || glCtx.blendState.getDstRgb() != dstRgb || glCtx.blendState.getSrcAlpha() != srcAlpha || glCtx.blendState.getDstAlpha() != dstAlpha) {
+        if (bypass || glCtx.blendState.getSrcRgb() != srcRgb || glCtx.blendState.getDstRgb() != dstRgb || glCtx.blendState.getSrcAlpha() != srcAlpha || glCtx.blendState.getDstAlpha() != dstAlpha || glCtx.blendState.isFuncUnknown()) {
             glCtx.blendState.setAll(srcRgb, dstRgb, srcAlpha, dstAlpha);
+            glCtx.blendState.clearFuncUnknownState();
             RENDER_BACKEND.blendFuncSeparate(srcRgb, dstRgb, srcAlpha, dstAlpha);
             if (GLSMHooks.BLEND_FUNC_CHANGE.hasListeners()) {
                 GLSMHooks.blendFuncChangeEvent.srcRgb = srcRgb;
@@ -2003,6 +2036,7 @@ public class GLStateManager {
     }
 
     public static void glBindTexture(int target, int texture) {
+        if (TextureInfoCache.isProxyTarget(target)) return;
         final GLContextState glCtx = ctx();
         final RecordMode mode = DisplayListManager.getRecordMode();
         if (mode != RecordMode.NONE) {
@@ -3534,6 +3568,9 @@ public class GLStateManager {
         Display.swapBuffers();
     }
 
+    private static boolean firstClearPending;
+    private static long firstClearBlockNanos;
+
     public static void updateDisplay() throws LWJGLException {
         updateDisplay(true);
     }
@@ -3541,17 +3578,19 @@ public class GLStateManager {
     public static void updateDisplay(boolean processMessages) throws LWJGLException {
         if (Thread.currentThread() != MainThread) {
             swapBuffers();
-            if (processMessages) Display.processMessages();
+            if (processMessages) pumpDisplayMessages();
             return;
         }
+        if (processMessages) pumpDisplayMessages();
         if (!RENDER_BACKEND.wantsDisplayUpdateGateTiming()) {
-            Display.update(processMessages);
+            Display.update(false);
             return;
         }
         final long start = System.nanoTime();
-        Display.update(processMessages);
+        Display.update(false);
         final long end = System.nanoTime();
-        RENDER_BACKEND.recordFrameGate(end - start, end);
+        RENDER_BACKEND.recordGate(end - start, end);
+        firstClearPending = true;
     }
 
     /**
@@ -3748,6 +3787,7 @@ public class GLStateManager {
         RENDER_BACKEND.clearDepth(glCtx.depthState.getClearValue());
 
         RENDER_BACKEND.blendFuncSeparate(glCtx.blendState.getSrcRgb(), glCtx.blendState.getDstRgb(), glCtx.blendState.getSrcAlpha(), glCtx.blendState.getDstAlpha());
+        glCtx.blendState.clearFuncUnknownState();
         RENDER_BACKEND.blendEquationSeparate(glCtx.blendState.getEquationRgb(), glCtx.blendState.getEquationAlpha());
         RENDER_BACKEND.blendColor(glCtx.blendState.getBlendColorR(), glCtx.blendState.getBlendColorG(), glCtx.blendState.getBlendColorB(), glCtx.blendState.getBlendColorA());
         RENDER_BACKEND.colorMask(glCtx.colorMask.red, glCtx.colorMask.green, glCtx.colorMask.blue, glCtx.colorMask.alpha);
@@ -3771,6 +3811,12 @@ public class GLStateManager {
         applyPolygonOffset(glCtx);
         RENDER_BACKEND.cullFace(glCtx.polygonState.getCullFaceMode());
         RENDER_BACKEND.frontFace(glCtx.polygonState.getFrontFace());
+
+        final SamplerUnitArray samplerUnits = glCtx.samplerUnits;
+        for (int i = 0; i < samplerUnits.size(); i++) {
+            final int sampler = samplerUnits.get(i);
+            if (sampler != 0) RENDER_BACKEND.bindSampler(i, sampler);
+        }
     }
 
     private static void applyPolygonOffset(GLContextState glCtx) {
@@ -3795,13 +3841,18 @@ public class GLStateManager {
             RENDER_BACKEND.clearDepth(glCtx.depthState.getClearValue());
         }
         if ((mask & GL11.GL_COLOR_BUFFER_BIT) != 0) {
-            if (glCtx.restoreBlendChanged) {
+            final BlendStateStack blend = glCtx.blendState;
+            if (glCtx.restoreBlendChanged || blend.isFuncUnknown()) {
                 final DeferredBlendHandler restoreBlendHandler = GLSMHooks.blendHandler;
                 if (restoreBlendHandler == null || !restoreBlendHandler.isOverrideHeld()) {
-                    RENDER_BACKEND.blendFuncSeparate(glCtx.blendState.getSrcRgb(), glCtx.blendState.getDstRgb(), glCtx.blendState.getSrcAlpha(), glCtx.blendState.getDstAlpha());
+                    RENDER_BACKEND.blendFuncSeparate(blend.getSrcRgb(), blend.getDstRgb(), blend.getSrcAlpha(), blend.getDstAlpha());
+                    blend.clearFuncUnknownState();
+                }
+                if (glCtx.restoreBlendChanged) {
+                    RENDER_BACKEND.blendEquationSeparate(blend.getEquationRgb(), blend.getEquationAlpha());
+                    RENDER_BACKEND.blendColor(
+                        blend.getBlendColorR(), blend.getBlendColorG(), blend.getBlendColorB(), blend.getBlendColorA());
                 }
-                RENDER_BACKEND.blendEquationSeparate(glCtx.blendState.getEquationRgb(), glCtx.blendState.getEquationAlpha());
-                RENDER_BACKEND.blendColor(glCtx.blendState.getBlendColorR(), glCtx.blendState.getBlendColorG(), glCtx.blendState.getBlendColorB(), glCtx.blendState.getBlendColorA());
             }
             if (glCtx.restoreColorMaskChanged && !isDepthColorOverridden()) {
                 RENDER_BACKEND.colorMask(glCtx.colorMask.red, glCtx.colorMask.green, glCtx.colorMask.blue, glCtx.colorMask.alpha);
@@ -3902,9 +3953,26 @@ public class GLStateManager {
                 return;
             }
         }
+        if (firstClearPending && Thread.currentThread() == MainThread && getDrawFramebuffer() == 0) {
+            firstClearPending = false;
+            final long start = System.nanoTime();
+            RENDER_BACKEND.clear(mask);
+            final long end = System.nanoTime();
+            if (end - start > 0) {
+                firstClearBlockNanos += end - start;
+                RENDER_BACKEND.recordGate(end - start, end);
+            }
+            return;
+        }
         RENDER_BACKEND.clear(mask);
     }
 
+    public static long takeFirstClearBlockNanos() {
+        final long value = firstClearBlockNanos;
+        firstClearBlockNanos = 0L;
+        return value;
+    }
+
     public static void glPushAttrib(int mask) {
         final RecordMode mode = DisplayListManager.getRecordMode();
         if (mode != RecordMode.NONE) {
@@ -4554,6 +4622,11 @@ public class GLStateManager {
         };
     }
 
+    private static int mipLevelSize(int base, int level) {
+        if (base <= 0 || level < 0 || level >= Integer.SIZE - 1) return 1;
+        return Math.max(base >> level, 1);
+    }
+
     public static int glGetTexLevelParameteri(int target, int level, int pname) {
         if (target != GL11.GL_TEXTURE_2D || !isCachingEnabled()) {
             return RENDER_BACKEND.getTexLevelParameteri(target, level, pname);
@@ -4568,8 +4641,8 @@ public class GLStateManager {
             return RENDER_BACKEND.getTexLevelParameteri(target, level, pname);
         }
         return switch (pname) {
-            case GL11.GL_TEXTURE_WIDTH -> Math.max(info.getWidth() >> level, 1);
-            case GL11.GL_TEXTURE_HEIGHT -> Math.max(info.getHeight() >> level, 1);
+            case GL11.GL_TEXTURE_WIDTH -> mipLevelSize(info.getWidth(), level);
+            case GL11.GL_TEXTURE_HEIGHT -> mipLevelSize(info.getHeight(), level);
             case GL11.GL_TEXTURE_INTERNAL_FORMAT -> {
                 if (info.needsInternalFormatResolve() && isRecordingDisplayList()) {
                     throw new IllegalStateException(String.format("glGetTexLevelParameteri(GL_TEXTURE_INTERNAL_FORMAT) needs to resolve a generic compressed format for texture %d during display list recording", getBoundTextureForServerState()));
@@ -4691,8 +4764,61 @@ public class GLStateManager {
     public static void glClearTexImage(int texture, int level, int format, int type, ByteBuffer data) { RENDER_BACKEND.clearTexImage(texture, level, format, type); }
 
     public static int glGenSamplers() { return RENDER_BACKEND.genSamplers(); }
-    public static void glDeleteSamplers(int sampler) { RENDER_BACKEND.deleteSamplers(sampler); }
-    public static void glBindSampler(int unit, int sampler) { RENDER_BACKEND.bindSampler(unit, sampler); }
+
+    public static void glGenSamplers(IntBuffer samplers) {
+        for (int i = samplers.position(); i < samplers.limit(); i++) samplers.put(i, RENDER_BACKEND.genSamplers());
+    }
+
+    public static void glGenSamplers(int[] samplers) {
+        for (int i = 0; i < samplers.length; i++) samplers[i] = RENDER_BACKEND.genSamplers();
+    }
+
+    public static void glDeleteSamplers(int sampler) {
+        if (sampler == 0) return;
+        ctx().samplerUnits.unbindEverywhere(sampler);
+        RENDER_BACKEND.deleteSamplers(sampler);
+    }
+
+    public static void glDeleteSamplers(IntBuffer samplers) {
+        for (int i = samplers.position(); i < samplers.limit(); i++) glDeleteSamplers(samplers.get(i));
+    }
+
+    public static void glDeleteSamplers(int[] samplers) {
+        for (int sampler : samplers) glDeleteSamplers(sampler);
+    }
+
+    public static void glBindSampler(int unit, int sampler) {
+        final SamplerUnitArray units = ctx().samplerUnits;
+        if (isCachingEnabled() && unit >= 0 && unit < units.size() && units.get(unit) == sampler) return;
+        if (!units.set(unit, sampler)) {
+            warnOnce("samplerUnitRange", "glBindSampler unit {} exceeds GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS {}", unit, units.size());
+        }
+        RENDER_BACKEND.bindSampler(unit, sampler);
+    }
+
+    public static void glBindSamplers(int first, int count, IntBuffer samplers) {
+        if (samplers == null) {
+            for (int i = 0; i < count; i++) glBindSampler(first + i, 0);
+            return;
+        }
+        if (samplers.remaining() < count) {
+            throw new IllegalArgumentException("Number of remaining buffer elements is " + samplers.remaining() + ", must be at least " + count);
+        }
+        final int base = samplers.position();
+        for (int i = 0; i < count; i++) glBindSampler(first + i, samplers.get(base + i));
+    }
+
+    public static void glBindSamplers(int first, IntBuffer samplers) {
+        if (samplers != null) glBindSamplers(first, samplers.remaining(), samplers);
+    }
+
+    public static void glBindSamplers(int first, int[] samplers) {
+        if (samplers == null) return;
+        for (int i = 0; i < samplers.length; i++) glBindSampler(first + i, samplers[i]);
+    }
+
+    public static int getSamplerBinding(int unit) { return ctx().samplerUnits.get(unit); }
+    public static int getSamplerUnitCount() { return ctx().samplerUnits.size(); }
     public static void glSamplerParameteri(int sampler, int pname, int param) { RENDER_BACKEND.samplerParameteri(sampler, pname, param); }
     public static void glSamplerParameterf(int sampler, int pname, float param) { RENDER_BACKEND.samplerParameterf(sampler, pname, param); }
 
@@ -5246,20 +5372,8 @@ public class GLStateManager {
         return RENDER_BACKEND.getEffectiveVSyncMode();
     }
 
-    public static int getDisplayRefreshRateHz() {
-        return RENDER_BACKEND.getDisplayRefreshRateHz();
-    }
-
-    public static boolean gateAnchorsNextFrameStart() {
-        return RENDER_BACKEND.gateAnchorsNextFrameStart();
-    }
-
-    public static long lastFrameGateNanos() {
-        return RENDER_BACKEND.lastFrameGateNanos();
-    }
-
-    public static long lastFrameGateEndNanos() {
-        return RENDER_BACKEND.lastFrameGateEndNanos();
+    public static void setPresentSuppressed(boolean suppressed) {
+        RENDER_BACKEND.setPresentSuppressed(suppressed);
     }
 
     public static boolean hasSwapchainBackpressure() {
@@ -5267,7 +5381,7 @@ public class GLStateManager {
     }
 
     public static void pumpDisplayMessages() {
-        Display.processMessages();
+        RENDER_BACKEND.pumpDisplayMessages();
     }
 
     public static int glGetError() {
@@ -6155,6 +6269,10 @@ public class GLStateManager {
     public static ByteBuffer glMapBuffer(int target, int access, long length, ByteBuffer old_buffer) { onBufferMap(target, access); return RENDER_BACKEND.mapBuffer(target, access, length, old_buffer); }
     public static ByteBuffer glMapBufferRange(int target, long offset, long length, int access) { onBufferMapRange(target, access); return RENDER_BACKEND.mapBufferRange(target, offset, length, access); }
     public static ByteBuffer glMapBufferRange(int target, long offset, long length, int access, ByteBuffer old_buffer) { return glMapBufferRange(target, offset, length, access); }
+    public static long glMapBufferRangeAddress(int target, long offset, long length, int access) {
+        onBufferMapRange(target, access);
+        return RENDER_BACKEND.mapBufferRangeAddress(target, offset, length, access);
+    }
     public static void glFlushMappedBufferRange(int target, long offset, long length) { RENDER_BACKEND.flushMappedBufferRange(target, offset, length); }
     public static boolean glUnmapBuffer(int target) { onBufferUnmap(target); return RENDER_BACKEND.unmapBuffer(target); }
 

glsm/src/main/java/com/gtnewhorizons/angelica/glsm/RenderSystem.java

@@ -9,7 +9,7 @@ import com.gtnewhorizons.angelica.glsm.dsa.DSAEXT;
 import com.gtnewhorizons.angelica.glsm.dsa.DSAUnsupported;
 import com.gtnewhorizons.angelica.glsm.ffp.ShaderManager;
 import com.gtnewhorizons.angelica.glsm.texture.TextureInfoCache;
-import com.mitchej123.lwjgl.LWJGLServiceProvider;
+import org.taumc.celeritas.lwjgl.LWJGLServiceProvider;
 import lombok.Getter;
 import org.jetbrains.annotations.Nullable;
 import org.joml.Matrix4f;
@@ -49,6 +49,7 @@ public class RenderSystem {
     private static boolean supportsTesselation;
     private static boolean supportsSamplerObjects;
     private static int maxImageUnits;
+    @Getter private static int maxCombinedTextureImageUnits;
     private static int maxSSBOBindings;
     private static int maxGlslVersion;
     private static boolean supportsGpuShader4;
@@ -64,9 +65,6 @@ public class RenderSystem {
     private static volatile boolean isLTW;
     private static volatile boolean ltwDetected;
 
-    // Sampler object state tracking (null if unsupported)
-    private static int[] samplers;
-
     private static final Pattern SEMVER_PATTERN = Pattern.compile("(?<major>\\d+)\\.(?<minor>\\d+)\\.*(?<bugfix>\\d*)(.*)");
 
     private RenderSystem() {}
@@ -158,7 +156,7 @@ public class RenderSystem {
         // Check for sampler objects support (GL 3.3+ or ARB extension)
         supportsSamplerObjects = GLStateManager.capabilities.OpenGL33 || GLStateManager.capabilities.GL_ARB_sampler_objects;
         if (supportsSamplerObjects) {
-            samplers = new int[RENDER_BACKEND.getInteger(GL20.GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS)];
+            maxCombinedTextureImageUnits = RENDER_BACKEND.getInteger(GL20.GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS);
         }
 
         maxGlslVersion = Integer.parseInt(parseGlVersionString(RENDER_BACKEND.getString(GL20.GL_SHADING_LANGUAGE_VERSION)));
@@ -486,17 +484,15 @@ public class RenderSystem {
     }
 
     public static void disableBufferBlend(int buffer) {
-        RENDER_BACKEND.disablei(GL11.GL_BLEND, buffer);
-        GLStateManager.getBlendMode().setUnknownState();
+        GLStateManager.glDisablei(GL11.GL_BLEND, buffer);
     }
 
     public static void enableBufferBlend(int buffer) {
-        RENDER_BACKEND.enablei(GL11.GL_BLEND, buffer);
-        GLStateManager.getBlendMode().setUnknownState();
+        GLStateManager.glEnablei(GL11.GL_BLEND, buffer);
     }
 
     public static void blendFuncSeparatei(int buffer, int srcRGB, int dstRGB, int srcAlpha, int dstAlpha) {
-        RENDER_BACKEND.blendFuncSeparatei(buffer, srcRGB, dstRGB, srcAlpha, dstAlpha);
+        GLStateManager.glBlendFuncSeparatei(buffer, srcRGB, dstRGB, srcAlpha, dstAlpha);
     }
 
     public static void bindTextureToUnit(int unit, int texture) {
@@ -628,7 +624,7 @@ public class RenderSystem {
 
     public static int genSampler() {
         if (!supportsSamplerObjects) return 0;
-        return RENDER_BACKEND.genSamplers();
+        return GLStateManager.glGenSamplers();
     }
 
     public static void destroySampler(int sampler) {
@@ -638,22 +634,20 @@ public class RenderSystem {
 
     public static void samplerParameteri(int sampler, int pname, int param) {
         if (!supportsSamplerObjects || sampler == 0) return;
-        RENDER_BACKEND.samplerParameteri(sampler, pname, param);
+        GLStateManager.glSamplerParameteri(sampler, pname, param);
     }
 
     public static void bindSamplerToUnit(int unit, int sampler) {
         if (!supportsSamplerObjects) return;
-        if (samplers[unit] == sampler) return;
-        RENDER_BACKEND.bindSampler(unit, sampler);
-        samplers[unit] = sampler;
+        GLStateManager.glBindSampler(unit, sampler);
     }
 
     public static void unbindAllSamplers() {
         if (!supportsSamplerObjects) return;
-        for (int i = 0; i < samplers.length; i++) {
-            if (samplers[i] != 0) {
-                RENDER_BACKEND.bindSampler(i, 0);
-                samplers[i] = 0;
+        final int count = GLStateManager.getSamplerUnitCount();
+        for (int i = 0; i < count; i++) {
+            if (GLStateManager.getSamplerBinding(i) != 0) {
+                GLStateManager.glBindSampler(i, 0);
             }
         }
     }

glsm/src/main/java/com/gtnewhorizons/angelica/glsm/backend/Lwjgl2GLRenderBackend.java

@@ -40,7 +40,7 @@ import java.nio.FloatBuffer;
 import java.nio.IntBuffer;
 import java.nio.ShortBuffer;
 
-import static com.mitchej123.lwjgl.LWJGLServiceProvider.LWJGL;
+import static org.taumc.celeritas.lwjgl.LWJGLServiceProvider.LWJGL;
 
 /**
  * LWJGL2 GL implementation of {@link RenderBackend}.
@@ -122,11 +122,11 @@ public final class Lwjgl2GLRenderBackend extends RenderBackend {
     }
 
     @Override
-    protected int queryDisplayRefreshRateHz() {
+    protected long queryRefreshPeriodNanos() {
         final DisplayMode mode = Display.getDisplayMode();
-        if (mode != null && mode.getFrequency() > 0) return mode.getFrequency();
+        if (mode != null && mode.getFrequency() > 0) return periodFromIntegerHz(mode.getFrequency());
         final DisplayMode desktop = Display.getDesktopDisplayMode();
-        return desktop == null ? 0 : desktop.getFrequency();
+        return desktop == null ? 0L : periodFromIntegerHz(desktop.getFrequency());
     }
 
     @Override

glsm/src/main/java/com/gtnewhorizons/angelica/glsm/backend/MainThreadPump.java

@@ -0,0 +1,112 @@
+package com.gtnewhorizons.angelica.glsm.backend;
+
+import com.gtnewhorizons.angelica.glsm.profiling.Tracy;
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
+import org.lwjgl.input.Keyboard;
+import org.lwjgl.input.Mouse;
+
+import java.util.concurrent.Executor;
+import java.util.function.BooleanSupplier;
+
+public final class MainThreadPump {
+
+    private static final Logger LOGGER = LogManager.getLogger("MainThreadPump");
+
+    private static final Tracy.ZoneId Z_DISPLAY_MESSAGES = Tracy.zoneId("displayMessages", Tracy.COLOR_CLIENT);
+
+    private static final long PARK_MILLIS = 20L;
+    private static final long STALL_WARN_NANOS = 5_000_000_000L;
+
+    public static void pollInput() {
+        Keyboard.poll();
+        Mouse.poll();
+    }
+
+    private final Executor mainExecutor;
+    private final BooleanSupplier isMainThread;
+    private final Runnable pumpBody;
+    private final Runnable pollBody;
+    private final Runnable task = this::runPump;
+    private final Object lock = new Object();
+
+    private boolean done;
+    private Throwable failure;
+    private ClassLoader callerLoader;
+
+    public MainThreadPump(Executor mainExecutor, BooleanSupplier isMainThread, Runnable pumpBody, Runnable pollBody) {
+        this.mainExecutor = mainExecutor;
+        this.isMainThread = isMainThread;
+        this.pumpBody = pumpBody;
+        this.pollBody = pollBody;
+    }
+
+    public void pumpMessages() {
+        Tracy.beginZone(Z_DISPLAY_MESSAGES);
+        try {
+            if (isMainThread.getAsBoolean()) {
+                pumpBody.run();
+            } else {
+                synchronized (lock) {
+                    runPumpOnMainThread();
+                }
+            }
+            pollBody.run();
+        } finally {
+            Tracy.endZone();
+        }
+    }
+
+    private void runPumpOnMainThread() {
+        final Thread self = Thread.currentThread();
+        callerLoader = self.getContextClassLoader();
+        failure = null;
+        done = false;
+        mainExecutor.execute(task);
+        boolean interrupted = false;
+        boolean stallReported = false;
+        final long stallAt = System.nanoTime() + STALL_WARN_NANOS;
+        while (!done) {
+            try {
+                lock.wait(PARK_MILLIS);
+            } catch (InterruptedException e) {
+                interrupted = true;
+            }
+            if (!done && !stallReported && System.nanoTime() - stallAt >= 0L) {
+                stallReported = true;
+                LOGGER.warn("Display message pump has been waiting on the RFB main thread for over {} ms", STALL_WARN_NANOS / 1_000_000L);
+            }
+        }
+        if (interrupted) self.interrupt();
+        final Throwable t = failure;
+        if (t != null) {
+            throw asUnchecked(t);
+        }
+    }
+
+    private void runPump() {
+        final Thread self = Thread.currentThread();
+        final ClassLoader saved = self.getContextClassLoader();
+        try {
+            self.setContextClassLoader(callerLoader);
+            pumpBody.run();
+        } catch (Throwable t) {
+            failure = t;
+        } finally {
+            try {
+                self.setContextClassLoader(saved);
+            } finally {
+                synchronized (lock) {
+                    done = true;
+                    lock.notifyAll();
+                }
+            }
+        }
+    }
+
+    private static RuntimeException asUnchecked(Throwable t) {
+        if (t instanceof RuntimeException runtime) return runtime;
+        if (t instanceof Error error) throw error;
+        return new RuntimeException(t);
+    }
+}

glsm/src/main/java/com/gtnewhorizons/angelica/glsm/backend/RenderBackend.java

@@ -3,6 +3,7 @@ package com.gtnewhorizons.angelica.glsm.backend;
 import com.gtnewhorizon.gtnhlib.bytebuf.MemoryUtilities;
 import com.gtnewhorizons.angelica.glsm.GLStateManager;
 import com.gtnewhorizons.angelica.glsm.RenderSystem;
+import org.lwjgl.opengl.Display;
 import org.lwjgl.opengl.GL20;
 
 import java.nio.ByteBuffer;
@@ -12,6 +13,7 @@ import java.nio.IntBuffer;
 import java.nio.ShortBuffer;
 import java.util.Collections;
 import java.util.List;
+import java.util.concurrent.locks.LockSupport;
 import java.util.function.Predicate;
 
 /**
@@ -72,7 +74,9 @@ public abstract class RenderBackend {
 
     public final void setVSyncMode(VSyncMode preferred) {
         setVSyncPreference(preferred);
-        publishVSyncMode(applyVSyncMode(preferred));
+        final VSyncMode mode = applyVSyncMode(preferred);
+        vsyncHonored = applyHonored();
+        publishVSyncMode(mode);
     }
 
     public final void setVSyncPreference(VSyncMode preferred) {
@@ -90,50 +94,146 @@ public abstract class RenderBackend {
 
     protected abstract VSyncMode applyVSyncMode(VSyncMode preferred);
 
+    protected boolean applyHonored() { return true; }
+
+    private boolean vsyncHonored = true;
+
+    public final boolean vsyncHonored() { return vsyncHonored; }
+
     public boolean supportsVSyncMode(VSyncMode mode) { return mode != VSyncMode.MAILBOX; }
 
-    protected final void publishVSyncMode(VSyncMode mode) { effectiveVSyncMode = mode; }
+    protected final void publishVSyncMode(VSyncMode mode) {
+        effectiveVSyncMode = mode;
+        bumpDisplayGeneration();
+    }
 
     public final VSyncMode getEffectiveVSyncMode() { return effectiveVSyncMode; }
 
+    private int displayGeneration;
+
+    public final int displayGeneration() { return displayGeneration; }
+
+    protected final void bumpDisplayGeneration() { displayGeneration++; }
+
     private static final long REFRESH_POLL_NANOS = 1_000_000_000L;
+    private static final long MIN_PLAUSIBLE_PERIOD_NANOS = 1_000_000L;
+    private static final long MAX_PLAUSIBLE_PERIOD_NANOS = 50_000_000L;
 
     private long refreshPollNanos;
-    private int cachedRefreshHz;
+    private long cachedRefreshPeriodNanos;
 
-    public final int getDisplayRefreshRateHz() {
+    public final long refreshPeriodNanos() {
         final long now = System.nanoTime();
         if (refreshPollNanos == 0L || now - refreshPollNanos >= REFRESH_POLL_NANOS) {
             refreshPollNanos = now;
-            cachedRefreshHz = queryDisplayRefreshRateHz();
+            final long fresh = plausiblePeriodNanos(queryRefreshPeriodNanos());
+            if (fresh != cachedRefreshPeriodNanos) bumpDisplayGeneration();
+            cachedRefreshPeriodNanos = fresh;
         }
-        return cachedRefreshHz;
+        return cachedRefreshPeriodNanos;
     }
 
-    protected int queryDisplayRefreshRateHz() { return 0; }
+    protected long queryRefreshPeriodNanos() { return 0L; }
 
-    public static int refreshHzFrom(int numerator, int denominator, float fallbackHz) {
-        if (numerator > 0 && denominator > 0) return (numerator + denominator - 1) / denominator;
-        return fallbackHz > 0.0f ? (int) Math.ceil(fallbackHz) : 0;
+    static long plausiblePeriodNanos(long periodNanos) {
+        return (periodNanos >= MIN_PLAUSIBLE_PERIOD_NANOS && periodNanos <= MAX_PLAUSIBLE_PERIOD_NANOS) ? periodNanos : 0L;
+    }
+
+    public static long periodFromRational(int numerator, int denominator, float fallbackHz) {
+        if (numerator > 0 && denominator > 0) {
+            final long scaledDenominator = 1_000_000_000L * denominator;
+            return (scaledDenominator + numerator / 2) / numerator;
+        }
+        return fallbackHz > 0.0f ? Math.round(1_000_000_000.0 / fallbackHz) : 0L;
+    }
+
+    private static final int[] TRUNCATED_NTSC_HZ = {23, 29, 59, 71, 119, 143, 239};
+
+    private static boolean isTruncatedNtscRate(int hz) {
+        for (int candidate : TRUNCATED_NTSC_HZ) {
+            if (candidate == hz) return true;
+        }
+        return false;
+    }
+
+    public static long periodFromIntegerHz(int hz) {
+        if (hz <= 0) return 0L;
+        if (isTruncatedNtscRate(hz)) {
+            final long denominator = (hz + 1) * 1000L;
+            return Math.round(1_000_000_000.0 * 1001 / denominator);
+        }
+        return Math.round(1_000_000_000.0 / hz);
+    }
+
+    public static int hzFromPeriod(long periodNanos) {
+        return periodNanos <= 0L ? 0 : (int) Math.round(1_000_000_000.0 / periodNanos);
     }
 
     public boolean hasSwapchainBackpressure() { return false; }
 
-    private long frameGateNanos;
-    private long frameGateEndNanos;
+    public static final class GateSample {
+        public long durationNanos;
+        public long endNanos;
+        public long gpuWaitNanos;
+    }
 
-    public boolean gateAnchorsNextFrameStart() { return false; }
+    static final class GateRecorder {
+
+        private long gateDurationNanos;
+        private long gateEndNanos;
+        private long gpuWaitNanos;
+
+        synchronized void recordGate(long durationNanos, long endNanos) {
+            if (gateEndNanos != 0L && gateDurationNanos >= durationNanos) return;
+            gateDurationNanos = durationNanos;
+            gateEndNanos = endNanos;
+        }
+
+        synchronized void recordGpuWait(long nanos) {
+            gpuWaitNanos += nanos;
+        }
+
+        synchronized void readGateSample(GateSample out) {
+            final long end = gateEndNanos;
+            out.durationNanos = end == 0L ? 0L : gateDurationNanos;
+            out.endNanos = end;
+            out.gpuWaitNanos = gpuWaitNanos;
+            gpuWaitNanos = 0L;
+            gateEndNanos = 0L;
+        }
+    }
+
+    private final GateRecorder gateRecorder = new GateRecorder();
 
     public boolean wantsDisplayUpdateGateTiming() { return true; }
 
-    public void recordFrameGate(long durationNanos, long endNanos) {
-        frameGateNanos = durationNanos;
-        frameGateEndNanos = endNanos;
+    public final void recordGate(long durationNanos, long endNanos) {
+        gateRecorder.recordGate(durationNanos, endNanos);
     }
 
-    public long lastFrameGateNanos() { return frameGateNanos; }
+    public final void recordGpuWait(long nanos) {
+        gateRecorder.recordGpuWait(nanos);
+    }
 
-    public long lastFrameGateEndNanos() { return frameGateEndNanos; }
+    public final void readGateSample(GateSample out) {
+        gateRecorder.readGateSample(out);
+    }
+
+    public void awaitPresent() {}
+
+    public void parkNanos(long nanos) {
+        LockSupport.parkNanos(nanos);
+    }
+
+    public void pumpDisplayMessages() {
+        Display.processMessages();
+    }
+
+    private boolean presentSuppressed;
+
+    public final void setPresentSuppressed(boolean suppressed) { presentSuppressed = suppressed; }
+
+    public final boolean isPresentSuppressed() { return presentSuppressed; }
 
     public void onFrameBegin() {
         if (GLStateManager.takeStateSeedPending()) {
@@ -144,7 +244,7 @@ public abstract class RenderBackend {
     public void onFrameEnd() {}
 
     /** Fired by lwjgl3ify Display before a mutation that recreates the swapchain. */
-    public void onPreSwapchainInvalidatingChange(Object change) {}
+    public void onPreSwapchainInvalidatingChange(Object change) { bumpDisplayGeneration(); }
 
     public boolean handleMakeCurrent(Object drawable) { return false; }
     public boolean handleReleaseContext(Object drawable) { return false; }
@@ -153,7 +253,7 @@ public abstract class RenderBackend {
 
     public String getTransferDebugInfo() { return null; }
 
-    public boolean bindVoxelizationRegion(int ssboBinding, int vertexBufferGlId, long openPass, float x, float y, float z) { return false; }
+    public boolean bindVoxelizationRegion(int ssboBinding, long openPass, float x, float y, float z) { return false; }
     public long beginVoxelizationBatch(int ssboBinding) { return 0L; }
     public void voxelizeRange(long pass, int vertexOffset, int vertexCount) {}
     public void endVoxelizationBatch(long pass) {}

glsm/src/main/java/com/gtnewhorizons/angelica/glsm/hooks/FrameHooks.java

@@ -0,0 +1,65 @@
+package com.gtnewhorizons.angelica.glsm.hooks;
+
+import com.gtnewhorizons.angelica.glsm.CaptureGate;
+import com.gtnewhorizons.angelica.glsm.DisplayListManager;
+import com.gtnewhorizons.angelica.glsm.GLDebug;
+import com.gtnewhorizons.angelica.glsm.GLStateManager;
+import com.gtnewhorizons.angelica.glsm.backend.BackendManager;
+
+import static com.gtnewhorizons.angelica.glsm.backend.BackendManager.RENDER_BACKEND;
+
+public final class FrameHooks {
+
+    private FrameHooks() {}
+
+    private static boolean gameLoopStarted;
+    private static long frameCounter;
+    private static boolean frameGroupActive;
+
+    public static void bootstrapFirstFrame() {
+        DisplayListManager.abortIfLeaked();
+        if (!gameLoopStarted) {
+            gameLoopStarted = true;
+            RENDER_BACKEND.onFrameBegin();
+            pushFrameGroup();
+        }
+    }
+
+    public static void frameEnd() {
+        popFrameGroup();
+        RENDER_BACKEND.onFrameEnd();
+    }
+
+    public static void frameBegin() {
+        if (gameLoopStarted) {
+            RENDER_BACKEND.onFrameBegin();
+            pushFrameGroup();
+        }
+    }
+
+    public static void shutdown() {
+        BackendManager.shutdown();
+    }
+
+    public static void bindSplashVao() {
+        GLStateManager.glBindVertexArray(GLStateManager.glGenVertexArrays());
+    }
+
+    public static void splashFinished() {
+        GLStateManager.markSplashComplete("SplashProgress.finish");
+    }
+
+    private static void pushFrameGroup() {
+        CaptureGate.refresh();
+        GLDebug.pushGroup("frame:", frameCounter);
+        frameGroupActive = true;
+    }
+
+    private static void popFrameGroup() {
+        if (frameGroupActive) {
+            GLDebug.popGroup();
+            frameGroupActive = false;
+            frameCounter++;
+        }
+    }
+}

glsm/src/main/java/com/gtnewhorizons/angelica/glsm/hooks/GLSMInitConfig.java

@@ -1,7 +1,9 @@
 package com.gtnewhorizons.angelica.glsm.hooks;
 
 import com.gtnewhorizon.gtnhlib.client.renderer.DirectTessellator;
+import com.gtnewhorizons.angelica.config.SystemProperties;
 import com.gtnewhorizons.angelica.glsm.streaming.StreamingUploader;
+import com.gtnewhorizons.angelica.glsm.streaming.TessellatorStreamingDrawer;
 import lombok.Getter;
 
 import java.util.function.Consumer;
@@ -14,7 +16,7 @@ public final class GLSMInitConfig {
     @Getter private final int displayWidth;
     @Getter private final int displayHeight;
     @Getter private final Runnable postInitCallback;
-    @Getter private final boolean DSAEnabled;
+    private final boolean dsaEnabled;
     @Getter private final boolean noErrorChecks;
 
     private GLSMInitConfig(Builder builder) {
@@ -26,7 +28,11 @@ public final class GLSMInitConfig {
         this.displayWidth = builder.displayWidth;
         this.displayHeight = builder.displayHeight;
         this.postInitCallback = builder.postInitCallback;
-        this.DSAEnabled = builder.enableDSA;
+        this.dsaEnabled = builder.dsaEnabled;
+    }
+
+    public boolean isDSAEnabled() {
+        return dsaEnabled;
     }
 
     public static Builder builder() {
@@ -34,14 +40,14 @@ public final class GLSMInitConfig {
     }
 
     public static final class Builder {
-        private boolean lwjglDebug = false;
+        private boolean lwjglDebug = SystemProperties.LWJGL_DEBUG;
         private StreamingUploader.UploadStrategy streamingUploadStrategy = StreamingUploader.UploadStrategy.BUFFER_DATA;
-        private Consumer<DirectTessellator> directDrawer = null;
-        private Runnable streamingDrawerDestroy = null;
+        private Consumer<DirectTessellator> directDrawer = TessellatorStreamingDrawer::drawDirect;
+        private Runnable streamingDrawerDestroy = TessellatorStreamingDrawer::destroy;
         private int displayWidth = 0;
         private int displayHeight = 0;
         private Runnable postInitCallback = null;
-        private boolean enableDSA = false;
+        private boolean dsaEnabled = true;
         private boolean noErrorChecks;
 
         private Builder() {}
@@ -83,7 +89,7 @@ public final class GLSMInitConfig {
         }
 
         public Builder enableDSA(boolean enableDSA) {
-            this.enableDSA = enableDSA;
+            this.dsaEnabled = enableDSA;
             return this;
         }
 

glsm/src/main/java/com/gtnewhorizons/angelica/glsm/hooks/TextureUtilHooks.java

@@ -0,0 +1,47 @@
+package com.gtnewhorizons.angelica.glsm.hooks;
+
+import com.gtnewhorizons.angelica.glsm.DisplayListManager;
+import com.gtnewhorizons.angelica.glsm.GLStateManager;
+import com.gtnewhorizons.angelica.glsm.RenderSystem;
+import org.lwjgl.opengl.EXTTextureFilterAnisotropic;
+import org.lwjgl.opengl.GL11;
+import org.lwjgl.opengl.GL12;
+
+public final class TextureUtilHooks {
+
+    private TextureUtilHooks() {}
+
+    private static int savedFilterTextureId;
+
+    public static void setMaxLevel(int mipmapLevels) {
+        GLStateManager.glTexParameteri(GL11.GL_TEXTURE_2D, GL12.GL_TEXTURE_MAX_LEVEL, mipmapLevels);
+    }
+
+    public static void captureBoundFilterTexture() {
+        savedFilterTextureId = GLStateManager.getBoundTextureForServerState();
+    }
+
+    public static void clearSavedFilterTexture() {
+        savedFilterTextureId = 0;
+    }
+
+    public static void restoreFilter(int min, int mag) {
+        final int id = savedFilterTextureId;
+        if (id != 0 && DisplayListManager.getRecordMode() == DisplayListManager.RecordMode.NONE) {
+            RenderSystem.texParameteri(id, GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_MIN_FILTER, min);
+            RenderSystem.texParameteri(id, GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_MAG_FILTER, mag);
+        } else {
+            GLStateManager.glTexParameteri(GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_MIN_FILTER, min);
+            GLStateManager.glTexParameteri(GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_MAG_FILTER, mag);
+        }
+    }
+
+    public static void restoreAniso(float aniso) {
+        final int id = savedFilterTextureId;
+        if (id != 0 && DisplayListManager.getRecordMode() == DisplayListManager.RecordMode.NONE) {
+            RenderSystem.texParameterf(id, GL11.GL_TEXTURE_2D, EXTTextureFilterAnisotropic.GL_TEXTURE_MAX_ANISOTROPY_EXT, aniso);
+        } else {
+            GLStateManager.glTexParameterf(GL11.GL_TEXTURE_2D, EXTTextureFilterAnisotropic.GL_TEXTURE_MAX_ANISOTROPY_EXT, aniso);
+        }
+    }
+}

glsm/src/main/java/com/gtnewhorizons/angelica/glsm/hooks/events/TextureUnitStateEvent.java

@@ -4,5 +4,6 @@ import net.minecraftforge.eventbus.api.event.MutableEvent;
 
 public final class TextureUnitStateEvent extends MutableEvent {
     public int unit;
+    public int cap;
     public boolean enabled;
 }

glsm/src/main/java/com/gtnewhorizons/angelica/glsm/loading/ClassDump.java

@@ -0,0 +1,26 @@
+package com.gtnewhorizons.angelica.glsm.loading;
+
+import com.gtnewhorizon.gtnhlib.asm.ASMUtil;
+import com.gtnewhorizons.retrofuturabootstrap.api.ClassNodeHandle;
+
+public final class ClassDump {
+
+    public static final ClassDump DISABLED = new ClassDump(false);
+
+    private final boolean enabled;
+
+    public ClassDump(boolean enabled) {
+        this.enabled = enabled;
+    }
+
+    public void dumpClass(String className, byte[] originalBytes, byte[] transformedBytes, Object transformer) {
+        if (!enabled) return;
+        ASMUtil.saveAsRawClassFile(originalBytes, className + "_PRE", transformer);
+        ASMUtil.saveAsRawClassFile(transformedBytes, className + "_POST", transformer);
+    }
+
+    public void dumpRFBClass(String className, ClassNodeHandle classNode, Object transformer) {
+        if (!enabled) return;
+        dumpClass(className, classNode.getOriginalBytes(), classNode.computeBytes(), transformer);
+    }
+}

glsm/src/main/java/com/gtnewhorizons/angelica/glsm/loading/DependencyVerifier.java

@@ -1,5 +1,10 @@
 package com.gtnewhorizons.angelica.glsm.loading;
 
+import net.minecraft.launchwrapper.Launch;
+import org.apache.logging.log4j.Logger;
+
+import javax.swing.JOptionPane;
+import java.awt.GraphicsEnvironment;
 import java.util.List;
 
 /**
@@ -15,6 +20,10 @@ public final class DependencyVerifier {
      */
     public record Check(String resourcePath, String errorMessage) {}
 
+    public interface FatalDialog {
+        void show(String title, String message);
+    }
+
     /**
      * Verify all checks pass. Throws RuntimeException on first failure.
      * @param anchor  Class whose classloader to use for resource lookups
@@ -28,5 +37,39 @@ public final class DependencyVerifier {
         }
     }
 
+    public static List<Check> gtnhLibChecks(String productName) {
+        return List.of(
+            new Check("/it/unimi/dsi/fastutil/ints/Int2ObjectMap.class", "Missing dependency: " + productName + " requires GTNHLib! Download: https://modrinth.com/mod/gtnhlib"),
+            new Check("/com/gtnewhorizon/gtnhlib/client/renderer/VertexCallbackManager.class", "GTNHLib is outdated: " + productName + " requires GTNHLib 0.10.0 or newer! Download: https://modrinth.com/mod/gtnhlib"),
+            new Check("/it/unimi/dsi/fastutil/objects/ObjectBooleanBiConsumer.class", "GTNHLib is outdated: " + productName + " requires GTNHLib 0.11.19 or newer (fastutil 8.5.18+)! Download: https://modrinth.com/mod/gtnhlib"));
+    }
+
+    public static void verifyOrHalt(Class<?> anchor, String productName, List<Check> checks, Logger logger, FatalDialog sdlDialog) {
+        final String message;
+        try {
+            verify(anchor, checks);
+            return;
+        } catch (RuntimeException ex) {
+            message = ex.getMessage();
+        }
+
+        final String title = productName + " - Missing Dependency";
+        System.err.println("FATAL: " + message);
+        try {
+            logger.fatal(message);
+        } catch (Throwable ignored) {}
+
+        final int lwjgl3ifyMajor = ((Integer) Launch.blackboard.getOrDefault("lwjgl3ify:major-version", Integer.MIN_VALUE));
+        try {
+            if (lwjgl3ifyMajor >= 3) {
+                sdlDialog.show(title, message);
+            } else if (!GraphicsEnvironment.isHeadless()) {
+                JOptionPane.showMessageDialog(null, message, title, JOptionPane.ERROR_MESSAGE);
+            }
+        } catch (Throwable ignored) {}
+
+        Runtime.getRuntime().halt(1);
+    }
+
     private DependencyVerifier() {}
 }

glsm/src/main/java/com/gtnewhorizons/angelica/glsm/loading/EarlyRedirectorCore.java

@@ -1,54 +1,8 @@
 package com.gtnewhorizons.angelica.glsm.loading;
 
-import com.gtnewhorizons.angelica.glsm.redirect.GLSMRedirector;
-import org.objectweb.asm.ClassReader;
-import org.objectweb.asm.ClassWriter;
-import org.objectweb.asm.tree.ClassNode;
-
-import java.util.ArrayList;
-import java.util.Arrays;
-import java.util.Collections;
-import java.util.List;
-
-public final class EarlyRedirectorCore {
-
-    private final GLSMRedirector core;
-    private final String[] targets;
-    private final String[] exclusions;
+public final class EarlyRedirectorCore extends ModRedirector {
 
     public EarlyRedirectorCore(String... extraExclusions) {
-        this.core = new GLSMRedirector();
-        this.targets = EcosystemNarrowRules.EARLY_REDIRECTOR_TARGETS.clone();
-
-        final List<String> excl = new ArrayList<>(Arrays.asList(core.getCoreExclusions()));
-        if (extraExclusions != null && extraExclusions.length > 0) {
-            Collections.addAll(excl, extraExclusions);
-        }
-        this.exclusions = excl.toArray(new String[0]);
-    }
-
-    public byte[] transform(String transformedName, byte[] basicClass) {
-        if (basicClass == null) return null;
-
-        if (!startsWithAny(transformedName, targets)) return basicClass;
-        if (startsWithAny(transformedName, exclusions)) return basicClass;
-        if (!core.shouldTransform(basicClass)) return basicClass;
-
-        final ClassReader cr = new ClassReader(basicClass);
-        final ClassNode cn = new ClassNode();
-        cr.accept(cn, 0);
-        if (core.transformClassNode(transformedName, cn)) {
-            final ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_MAXS);
-            cn.accept(cw);
-            return cw.toByteArray();
-        }
-        return basicClass;
-    }
-
-    private static boolean startsWithAny(String name, String[] prefixes) {
-        for (String p : prefixes) {
-            if (name.startsWith(p)) return true;
-        }
-        return false;
+        super(ClassDump.DISABLED, EcosystemNarrowRules.EARLY_REDIRECTOR_TARGETS.clone(), extraExclusions);
     }
 }

glsm/src/main/java/com/gtnewhorizons/angelica/glsm/loading/EcosystemNarrowRules.java

@@ -91,9 +91,8 @@ public final class EcosystemNarrowRules {
     public static final String[] LWJGL3IFY_EXCLUSIONS_SHARED = {
         "org.embeddedt.embeddium",
         "org.taumc.celeritas",
-        "com.mitchej123.lwjgl.lwjgl3",
-        "com.mitchej123.glsm",
         "com.gtnewhorizons.angelica.lwjgl3",
+        "com.gtnewhorizons.angelica.sdlgpu",
     };
 
     public static final String[] EARLY_REDIRECTOR_TARGETS = {

glsm/src/main/java/com/gtnewhorizons/angelica/glsm/loading/Lwjgl3ifyExclusions.java

@@ -0,0 +1,19 @@
+package com.gtnewhorizons.angelica.glsm.loading;
+
+import com.gtnewhorizons.retrofuturabootstrap.SharedConfig;
+
+public final class Lwjgl3ifyExclusions {
+
+    public static void apply() {
+        final var handle = SharedConfig.getRfbTransformers().stream()
+            .filter(transformer -> transformer.id().equals("lwjgl3ify:redirect"))
+            .findFirst()
+            .orElse(null);
+        if (handle == null) return;
+        for (String exclusion : EcosystemNarrowRules.LWJGL3IFY_EXCLUSIONS_SHARED) {
+            handle.exclusions().add(exclusion);
+        }
+    }
+
+    private Lwjgl3ifyExclusions() {}
+}

glsm/src/main/java/com/gtnewhorizons/angelica/glsm/loading/ModRedirector.java

@@ -0,0 +1,78 @@
+package com.gtnewhorizons.angelica.glsm.loading;
+
+import com.gtnewhorizons.angelica.glsm.redirect.GLSMRedirector;
+import org.objectweb.asm.ClassReader;
+import org.objectweb.asm.ClassWriter;
+import org.objectweb.asm.tree.ClassNode;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.List;
+
+public class ModRedirector {
+
+    private final GLSMRedirector core = new GLSMRedirector();
+    private final ClassDump dump;
+    private final String[] targets;
+    private final String[] allExclusions;
+
+    public ModRedirector(ClassDump dump, String... extraExclusions) {
+        this(dump, (String[]) null, extraExclusions);
+    }
+
+    public ModRedirector(ClassDump dump, String[] targets, String[] extraExclusions) {
+        this.dump = dump;
+        this.targets = targets;
+        final List<String> exclusions = new ArrayList<>(Arrays.asList(core.getCoreExclusions()));
+        exclusions.add("com.gtnewhorizons.angelica.lwjgl3.");
+        Collections.addAll(exclusions, extraExclusions);
+        this.allExclusions = exclusions.toArray(new String[0]);
+    }
+
+    public ClassDump getDump() {
+        return dump;
+    }
+
+    public String[] getTransformerExclusions() {
+        return allExclusions;
+    }
+
+    public boolean shouldTransform(byte[] basicClass) {
+        return core.shouldTransform(basicClass);
+    }
+
+    public boolean transformClassNode(String transformedName, ClassNode cn, boolean lwjgl3Aware) {
+        return core.transformClassNode(transformedName, cn, lwjgl3Aware);
+    }
+
+    public byte[] transform(String transformedName, byte[] basicClass, Object transformer) {
+        if (basicClass == null) return null;
+
+        if (targets != null && !startsWithAny(transformedName, targets)) return basicClass;
+        if (startsWithAny(transformedName, allExclusions)) return basicClass;
+
+        if (!core.shouldTransform(basicClass)) {
+            return basicClass;
+        }
+
+        final ClassReader cr = new ClassReader(basicClass);
+        final ClassNode cn = new ClassNode();
+        cr.accept(cn, 0);
+        if (!core.transformClassNode(transformedName, cn)) {
+            return basicClass;
+        }
+        final ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_MAXS);
+        cn.accept(cw);
+        final byte[] bytes = cw.toByteArray();
+        dump.dumpClass(transformedName, basicClass, bytes, transformer);
+        return bytes;
+    }
+
+    private static boolean startsWithAny(String name, String[] prefixes) {
+        for (String prefix : prefixes) {
+            if (name.startsWith(prefix)) return true;
+        }
+        return false;
+    }
+}

glsm/src/main/java/com/gtnewhorizons/angelica/glsm/loading/RfbModRedirector.java

@@ -0,0 +1,76 @@
+package com.gtnewhorizons.angelica.glsm.loading;
+
+import com.gtnewhorizons.retrofuturabootstrap.api.ClassNodeHandle;
+import com.gtnewhorizons.retrofuturabootstrap.api.ExtensibleClassLoader;
+import com.gtnewhorizons.retrofuturabootstrap.api.RfbClassTransformer;
+import org.intellij.lang.annotations.Pattern;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+import java.util.jar.Attributes;
+import java.util.jar.Manifest;
+
+public abstract class RfbModRedirector implements RfbClassTransformer {
+
+    private static final Attributes.Name LWJGL3_AWARE = new Attributes.Name("Lwjgl3ify-Aware");
+
+    private final String id;
+    private final ModRedirector inner;
+
+    protected RfbModRedirector(@Pattern("[a-z0-9-]+") String id, ModRedirector inner) {
+        this.id = id;
+        this.inner = inner;
+    }
+
+    @Override
+    public @NotNull String id() {
+        return id;
+    }
+
+    private static boolean isLwjgl3Aware(@Nullable Manifest manifest) {
+        return manifest != null && "true".equals(manifest.getMainAttributes().getValue(LWJGL3_AWARE));
+    }
+
+    @Override
+    public @NotNull String @Nullable [] sortAfter() {
+        return new String[] {"*", "mixin:mixin"};
+    }
+
+    @Override
+    public @NotNull String @Nullable [] sortBefore() {
+        return new String[] {"lwjgl3ify:redirect"};
+    }
+
+    @Override
+    public @NotNull String @Nullable [] additionalExclusions() {
+        return inner.getTransformerExclusions();
+    }
+
+    @Override
+    public boolean shouldTransformClass(@NotNull ExtensibleClassLoader classLoader,
+        @NotNull RfbClassTransformer.Context context, @Nullable Manifest manifest, @NotNull String className,
+        @NotNull ClassNodeHandle classNode) {
+        if (!classNode.isPresent()) {
+            return false;
+        }
+        return inner.shouldTransform(classNode.getOriginalBytes());
+    }
+
+    @Override
+    public boolean transformClassIfNeeded(@NotNull ExtensibleClassLoader classLoader,
+        @NotNull RfbClassTransformer.Context context, @Nullable Manifest manifest, @NotNull String className,
+        @NotNull ClassNodeHandle classNode) {
+        final boolean changed = inner.transformClassNode(className, classNode.getNode(), isLwjgl3Aware(manifest));
+        if (changed) {
+            classNode.computeMaxs();
+            inner.getDump().dumpRFBClass(className, classNode, this);
+        }
+        return changed;
+    }
+
+    @Override
+    public void transformClass(@NotNull ExtensibleClassLoader classLoader, @NotNull RfbClassTransformer.Context context,
+        @Nullable Manifest manifest, @NotNull String className, @NotNull ClassNodeHandle classNode) {
+        transformClassIfNeeded(classLoader, context, manifest, className, classNode);
+    }
+}

glsm/src/main/java/com/gtnewhorizons/angelica/glsm/redirect/GLSMRedirector.java

@@ -164,6 +164,8 @@ public class GLSMRedirector {
     private static final String EXTGPUShader4 = "org/lwjgl/opengl/EXTGPUShader4";
     private static final String ARBTimerQuery = "org/lwjgl/opengl/ARBTimerQuery";
     private static final String EXTTimerQuery = "org/lwjgl/opengl/EXTTimerQuery";
+    private static final String ARBSamplerObjects = "org/lwjgl/opengl/ARBSamplerObjects";
+    private static final String ARBMultiBind = "org/lwjgl/opengl/ARBMultiBind";
 
     // Redirect VAO related calls from NHLib
     private static final String UniversalVAO = "com/gtnewhorizon/gtnhlib/client/opengl/UniversalVAO";
@@ -555,6 +557,7 @@ public class GLSMRedirector {
             .add("glMultiDrawElementsIndirect");
         final var gl44 = RedirectMap.newMap()
             .add("glBufferStorage")
+            .add("glBindSamplers")
             .add("glClearTexImage");
         final var gl45 = RedirectMap.newMap()
             .add("glCreateBuffers")
@@ -767,6 +770,17 @@ public class GLSMRedirector {
             .add("glMapBufferRange")
             .add("glFlushMappedBufferRange")
         );
+        methodRedirects.put(ARBSamplerObjects, RedirectMap.newMap()
+            .add("glGenSamplers")
+            .add("glDeleteSamplers")
+            .add("glIsSampler")
+            .add("glBindSampler")
+            .add("glSamplerParameteri")
+            .add("glSamplerParameterf")
+        );
+        methodRedirects.put(ARBMultiBind, RedirectMap.newMap()
+            .add("glBindSamplers")
+        );
 
         // APPLE
         methodRedirects.put(APPLEVertexArrayObject, RedirectMap.newMap()

glsm/src/main/java/com/gtnewhorizons/angelica/glsm/stacks/BlendStateStack.java

@@ -12,6 +12,8 @@ public class BlendStateStack extends BlendState implements IStateStack<BlendStat
 
     protected int pointer;
 
+    private boolean funcUnknown;
+
     @Setter private VanillaStateLayer<BlendState> vanillaLayer;
 
     public BlendStateStack() {
@@ -44,6 +46,18 @@ public class BlendStateStack extends BlendState implements IStateStack<BlendStat
         return this;
     }
 
+    public void setFuncUnknownState() {
+        funcUnknown = true;
+    }
+
+    public boolean isFuncUnknown() {
+        return funcUnknown;
+    }
+
+    public void clearFuncUnknownState() {
+        funcUnknown = false;
+    }
+
     public BlendState readEffective(BlendState out) {
         out.set(this);
         VanillaStateLayer.capture(vanillaLayer, out);

glsm/src/main/java/com/gtnewhorizons/angelica/glsm/stacks/TextureUnitBooleanStateStack.java

@@ -44,6 +44,7 @@ public class TextureUnitBooleanStateStack extends BooleanStateStack {
 
             if (GLSMHooks.TEXTURE_UNIT_STATE.hasListeners()) {
                 GLSMHooks.textureUnitStateEvent.unit = unitIndex;
+                GLSMHooks.textureUnitStateEvent.cap = glCap;
                 GLSMHooks.textureUnitStateEvent.enabled = enabled;
                 GLSMHooks.TEXTURE_UNIT_STATE.post(GLSMHooks.textureUnitStateEvent);
             }

glsm/src/main/java/com/gtnewhorizons/angelica/glsm/states/SamplerUnitArray.java

@@ -0,0 +1,40 @@
+package com.gtnewhorizons.angelica.glsm.states;
+
+import com.gtnewhorizons.angelica.glsm.RenderSystem;
+
+public class SamplerUnitArray {
+
+    private static final int MIN_UNITS = 16;
+
+    private int[] samplers;
+
+    public int get(int unit) {
+        final int[] local = samplers;
+        return local != null && unit >= 0 && unit < local.length ? local[unit] : 0;
+    }
+
+    public boolean set(int unit, int sampler) {
+        if (unit < 0) return false;
+        int[] local = samplers;
+        if (local == null) {
+            local = new int[Math.max(MIN_UNITS, RenderSystem.getMaxCombinedTextureImageUnits())];
+            samplers = local;
+        }
+        if (unit >= local.length) return false;
+        local[unit] = sampler;
+        return true;
+    }
+
+    public void unbindEverywhere(int sampler) {
+        final int[] local = samplers;
+        if (local == null) return;
+        for (int i = 0; i < local.length; i++) {
+            if (local[i] == sampler) local[i] = 0;
+        }
+    }
+
+    public int size() {
+        final int[] local = samplers;
+        return local == null ? 0 : local.length;
+    }
+}

glsm/src/main/java/com/gtnewhorizons/angelica/glsm/streaming/GlStreamingRing.java

@@ -3,7 +3,8 @@ package com.gtnewhorizons.angelica.glsm.streaming;
 import com.gtnewhorizons.angelica.config.SystemProperties;
 import com.gtnewhorizons.angelica.glsm.GLStateManager;
 import com.gtnewhorizons.angelica.glsm.RenderSystem;
-import it.unimi.dsi.fastutil.objects.ObjectArrayFIFOQueue;
+import it.unimi.dsi.fastutil.ints.IntArrayFIFOQueue;
+import it.unimi.dsi.fastutil.longs.LongArrayFIFOQueue;
 import org.lwjgl.opengl.GL30;
 import org.lwjgl.opengl.GL32;
 import org.lwjgl.opengl.GL44;
@@ -11,7 +12,6 @@ import org.lwjgl.opengl.GL44;
 import java.nio.ByteBuffer;
 
 import static com.gtnewhorizon.gtnhlib.bytebuf.MemoryUtilities.memAddress0;
-import static com.gtnewhorizons.angelica.glsm.backend.BackendManager.RENDER_BACKEND;
 
 /**
  * Persistent-mapped fence-reclaimed ring over any buffer target. Callers reserve a range and
@@ -28,7 +28,8 @@ final class GlStreamingRing {
     private static final long SYNC_WAIT_SLICE_NANOS = 10_000_000L;
     private static final long SYNC_WAIT_TOTAL_NANOS = 5_000_000_000L;
 
-    private final ObjectArrayFIFOQueue<FencedRegion> fenceQueue = new ObjectArrayFIFOQueue<>();
+    private final LongArrayFIFOQueue fenceIds = new LongArrayFIFOQueue();
+    private final IntArrayFIFOQueue fenceBytes = new IntArrayFIFOQueue();
     private int writePos;
     private int remaining;
     private int pendingBytes;
@@ -51,13 +52,13 @@ final class GlStreamingRing {
 
     static GlStreamingRing create(int target, int capacity, boolean forceOrphan) {
         if (forceOrphan || !RenderSystem.supportsBufferStorage()) return null;
-        final int id = RENDER_BACKEND.genBuffers();
-        RENDER_BACKEND.bindBuffer(target, id);
+        final int id = GLStateManager.glGenBuffers();
+        GLStateManager.glBindBuffer(target, id);
         final int storageFlags = GL44.GL_MAP_PERSISTENT_BIT | GL30.GL_MAP_WRITE_BIT | GL44.GL_MAP_COHERENT_BIT | GL44.GL_CLIENT_STORAGE_BIT;
         RenderSystem.bufferStorage(target, capacity, storageFlags);
         final int mapFlags = GL44.GL_MAP_PERSISTENT_BIT | GL30.GL_MAP_WRITE_BIT | GL44.GL_MAP_COHERENT_BIT;
-        final ByteBuffer mapped = RENDER_BACKEND.mapBufferRange(target, 0, capacity, mapFlags);
-        RENDER_BACKEND.bindBuffer(target, 0);
+        final ByteBuffer mapped = GLStateManager.glMapBufferRange(target, 0, capacity, mapFlags);
+        GLStateManager.glBindBuffer(target, 0);
         if (mapped == null) {
             GLStateManager.glDeleteBuffers(id);
             GLStateManager.LOGGER.warn("Persistent map failed for streaming ring (target=0x{}, {} bytes)", Integer.toHexString(target), capacity);
@@ -92,7 +93,7 @@ final class GlStreamingRing {
 
     private boolean ensureRemaining(int needed) {
         while (remaining < needed) {
-            if (fenceQueue.isEmpty()) {
+            if (fenceIds.isEmpty()) {
                 if (pendingBytes == 0) return false;
                 fence();
             }
@@ -103,7 +104,8 @@ final class GlStreamingRing {
 
     private void fence() {
         if (pendingBytes > 0) {
-            fenceQueue.enqueue(new FencedRegion(RENDER_BACKEND.fenceSync(GL32.GL_SYNC_GPU_COMMANDS_COMPLETE, 0), pendingBytes));
+            fenceIds.enqueue(GLStateManager.glFenceSync(GL32.GL_SYNC_GPU_COMMANDS_COMPLETE, 0));
+            fenceBytes.enqueue(pendingBytes);
             pendingBytes = 0;
             fencesIssued++;
         }
@@ -114,30 +116,32 @@ final class GlStreamingRing {
     }
 
     private void reclaim() {
-        while (!fenceQueue.isEmpty()) {
-            final FencedRegion region = fenceQueue.first();
-            if (!signaled(RENDER_BACKEND.clientWaitSync(region.fenceId, 0, 0L))) break;
-            GLStateManager.glDeleteSync(region.fenceId);
-            fenceQueue.dequeue();
-            remaining += region.bytes;
+        while (!fenceIds.isEmpty()) {
+            final long fenceId = fenceIds.firstLong();
+            if (!signaled(GLStateManager.glClientWaitSync(fenceId, 0, 0L))) break;
+            GLStateManager.glDeleteSync(fenceId);
+            fenceIds.dequeueLong();
+            remaining += fenceBytes.dequeueInt();
         }
     }
 
     private void syncOldest() {
-        final FencedRegion region = fenceQueue.dequeue();
+        final long fenceId = fenceIds.dequeueLong();
+        final int bytes = fenceBytes.dequeueInt();
         forcedReclaims++;
         final long deadline = System.nanoTime() + SYNC_WAIT_TOTAL_NANOS;
         long remainingNanos = SYNC_WAIT_TOTAL_NANOS;
         int status;
         do {
-            status = RENDER_BACKEND.clientWaitSync(region.fenceId, GL32.GL_SYNC_FLUSH_COMMANDS_BIT, Math.min(SYNC_WAIT_SLICE_NANOS, remainingNanos));
+            status = GLStateManager.glClientWaitSync(fenceId, GL32.GL_SYNC_FLUSH_COMMANDS_BIT,
+                Math.min(SYNC_WAIT_SLICE_NANOS, remainingNanos));
             remainingNanos = deadline - System.nanoTime();
         } while (status == GL32.GL_TIMEOUT_EXPIRED && remainingNanos > 0);
         if (!signaled(status)) {
             GLStateManager.LOGGER.warn("Streaming ring fence wait did not signal (status=0x{}); reclaiming anyway", Integer.toHexString(status));
         }
-        GLStateManager.glDeleteSync(region.fenceId);
-        remaining += region.bytes;
+        GLStateManager.glDeleteSync(fenceId);
+        remaining += bytes;
         reclaim();
     }
 
@@ -156,17 +160,16 @@ final class GlStreamingRing {
     int forcedReclaims() { return forcedReclaims; }
 
     void destroy() {
-        while (!fenceQueue.isEmpty()) {
-            GLStateManager.glDeleteSync(fenceQueue.dequeue().fenceId);
+        while (!fenceIds.isEmpty()) {
+            GLStateManager.glDeleteSync(fenceIds.dequeueLong());
         }
+        fenceBytes.clear();
         if (bufferId != 0) {
-            RENDER_BACKEND.bindBuffer(target, bufferId);
-            RENDER_BACKEND.unmapBuffer(target);
-            RENDER_BACKEND.bindBuffer(target, 0);
+            GLStateManager.glBindBuffer(target, bufferId);
+            GLStateManager.glUnmapBuffer(target);
+            GLStateManager.glBindBuffer(target, 0);
             GLStateManager.glDeleteBuffers(bufferId);
             bufferId = 0;
         }
     }
-
-    private record FencedRegion(long fenceId, int bytes) {}
 }

glsm/src/main/java/com/gtnewhorizons/angelica/glsm/streaming/OrphanStreamingBuffer.java

@@ -5,8 +5,6 @@ import org.lwjgl.opengl.GL15;
 
 import java.nio.ByteBuffer;
 
-import static com.gtnewhorizons.angelica.glsm.backend.BackendManager.RENDER_BACKEND;
-
 /**
  * Streaming buffer using the classic orphan pattern.
  */
@@ -16,19 +14,19 @@ public final class OrphanStreamingBuffer {
     private int capacity;
 
     public OrphanStreamingBuffer() {
-        this.bufferId = RENDER_BACKEND.genBuffers();
+        this.bufferId = GLStateManager.glGenBuffers();
     }
 
     public void upload(ByteBuffer data) {
-        RENDER_BACKEND.bindBuffer(GL15.GL_ARRAY_BUFFER, bufferId);
+        GLStateManager.glBindBuffer(GL15.GL_ARRAY_BUFFER, bufferId);
         capacity = StreamingUploader.upload(data, capacity);
-        RENDER_BACKEND.bindBuffer(GL15.GL_ARRAY_BUFFER, 0);
+        GLStateManager.glBindBuffer(GL15.GL_ARRAY_BUFFER, 0);
     }
 
     void upload(StreamingUploader.UploadStrategy strategy, ByteBuffer data) {
-        RENDER_BACKEND.bindBuffer(GL15.GL_ARRAY_BUFFER, bufferId);
+        GLStateManager.glBindBuffer(GL15.GL_ARRAY_BUFFER, bufferId);
         capacity = StreamingUploader.upload(strategy, data, capacity);
-        RENDER_BACKEND.bindBuffer(GL15.GL_ARRAY_BUFFER, 0);
+        GLStateManager.glBindBuffer(GL15.GL_ARRAY_BUFFER, 0);
     }
 
     public int getCapacity() {

glsm/src/main/java/com/gtnewhorizons/angelica/glsm/streaming/StreamingUploader.java

@@ -7,7 +7,6 @@ import org.lwjgl.opengl.GL30;
 import java.nio.ByteBuffer;
 
 import static com.gtnewhorizon.gtnhlib.bytebuf.MemoryUtilities.memAddress0;
-import static com.gtnewhorizons.angelica.glsm.backend.BackendManager.RENDER_BACKEND;
 import static com.gtnewhorizon.gtnhlib.bytebuf.MemoryUtilities.memCopy;
 
 
@@ -28,30 +27,30 @@ public final class StreamingUploader {
     public static int upload(UploadStrategy strategy, ByteBuffer data, int capacity) {
         switch (strategy) {
             case BUFFER_DATA -> {
-                RENDER_BACKEND.bufferData(GL15.GL_ARRAY_BUFFER, data, GL15.GL_STREAM_DRAW);
+                GLStateManager.glBufferData(GL15.GL_ARRAY_BUFFER, data, GL15.GL_STREAM_DRAW);
                 return data.remaining();
             }
             case BUFFER_SUB_DATA -> {
                 if (data.remaining() > capacity) {
-                    RENDER_BACKEND.bufferData(GL15.GL_ARRAY_BUFFER, data, GL15.GL_STREAM_DRAW);
+                    GLStateManager.glBufferData(GL15.GL_ARRAY_BUFFER, data, GL15.GL_STREAM_DRAW);
                     return data.remaining();
                 }
-                RENDER_BACKEND.bufferSubData(GL15.GL_ARRAY_BUFFER, 0, data);
+                GLStateManager.glBufferSubData(GL15.GL_ARRAY_BUFFER, 0, data);
                 return capacity;
             }
             case MAP_BUFFER_RANGE -> {
                 if (data.remaining() > capacity) {
-                    RENDER_BACKEND.bufferData(GL15.GL_ARRAY_BUFFER, data, GL15.GL_STREAM_DRAW);
+                    GLStateManager.glBufferData(GL15.GL_ARRAY_BUFFER, data, GL15.GL_STREAM_DRAW);
                     return data.remaining();
                 }
                 final int dataSize = data.remaining();
-                final long dst = RENDER_BACKEND.mapBufferRangeAddress(GL15.GL_ARRAY_BUFFER, 0, dataSize, MAP_WRITE_INVALIDATE_BUFFER);
+                final long dst = GLStateManager.glMapBufferRangeAddress(GL15.GL_ARRAY_BUFFER, 0, dataSize, MAP_WRITE_INVALIDATE_BUFFER);
                 if (dst == 0L) {
-                    RENDER_BACKEND.bufferData(GL15.GL_ARRAY_BUFFER, data, GL15.GL_STREAM_DRAW);
+                    GLStateManager.glBufferData(GL15.GL_ARRAY_BUFFER, data, GL15.GL_STREAM_DRAW);
                     return data.remaining();
                 }
                 memCopy(memAddress0(data), dst, dataSize);
-                RENDER_BACKEND.unmapBuffer(GL15.GL_ARRAY_BUFFER);
+                GLStateManager.glUnmapBuffer(GL15.GL_ARRAY_BUFFER);
                 return capacity;
             }
             default -> throw new UnsupportedOperationException();

glsm/src/main/java/com/gtnewhorizons/angelica/glsm/streaming/UniformRingBuffer.java

@@ -10,7 +10,6 @@ import java.nio.ByteBuffer;
 
 import static com.gtnewhorizon.gtnhlib.bytebuf.MemoryUtilities.memAddress0;
 import static com.gtnewhorizon.gtnhlib.bytebuf.MemoryUtilities.memCopy;
-import static com.gtnewhorizons.angelica.glsm.backend.BackendManager.RENDER_BACKEND;
 
 public final class UniformRingBuffer {
 
@@ -35,10 +34,10 @@ public final class UniformRingBuffer {
         this.stride = (blockSize + OFFSET_ALIGNMENT - 1) & -OFFSET_ALIGNMENT;
         this.ring = GlStreamingRing.create(GL31.GL_UNIFORM_BUFFER, capacity, forceOrphan);
         if (ring == null) {
-            orphanBufferId = RENDER_BACKEND.genBuffers();
-            RENDER_BACKEND.bindBuffer(GL31.GL_UNIFORM_BUFFER, orphanBufferId);
-            RENDER_BACKEND.bufferData(GL31.GL_UNIFORM_BUFFER, capacity, GL15.GL_STREAM_DRAW);
-            RENDER_BACKEND.bindBuffer(GL31.GL_UNIFORM_BUFFER, 0);
+            orphanBufferId = GLStateManager.glGenBuffers();
+            GLStateManager.glBindBuffer(GL31.GL_UNIFORM_BUFFER, orphanBufferId);
+            GLStateManager.glBufferData(GL31.GL_UNIFORM_BUFFER, capacity, GL15.GL_STREAM_DRAW);
+            GLStateManager.glBindBuffer(GL31.GL_UNIFORM_BUFFER, 0);
         }
     }
 
@@ -56,20 +55,20 @@ public final class UniformRingBuffer {
     }
 
     private int writeOrphan(long srcAddress) {
-        RENDER_BACKEND.bindBuffer(GL31.GL_UNIFORM_BUFFER, orphanBufferId);
+        GLStateManager.glBindBuffer(GL31.GL_UNIFORM_BUFFER, orphanBufferId);
         int offset = writePos;
         if (offset + stride > capacity) {
-            RENDER_BACKEND.bufferData(GL31.GL_UNIFORM_BUFFER, capacity, GL15.GL_STREAM_DRAW);
+            GLStateManager.glBufferData(GL31.GL_UNIFORM_BUFFER, capacity, GL15.GL_STREAM_DRAW);
             offset = 0;
             orphanWraps++;
         }
-        final long dst = RENDER_BACKEND.mapBufferRangeAddress(GL31.GL_UNIFORM_BUFFER, offset, blockSize, GL30.GL_MAP_WRITE_BIT | GL30.GL_MAP_INVALIDATE_RANGE_BIT | GL30.GL_MAP_UNSYNCHRONIZED_BIT);
+        final long dst = GLStateManager.glMapBufferRangeAddress(GL31.GL_UNIFORM_BUFFER, offset, blockSize, GL30.GL_MAP_WRITE_BIT | GL30.GL_MAP_INVALIDATE_RANGE_BIT | GL30.GL_MAP_UNSYNCHRONIZED_BIT);
         if (dst == 0L) {
             throw new IllegalStateException("mapBufferRange failed on uniform ring (offset=" + offset + ")");
         }
         memCopy(srcAddress, dst, blockSize);
-        RENDER_BACKEND.unmapBuffer(GL31.GL_UNIFORM_BUFFER);
-        RENDER_BACKEND.bindBuffer(GL31.GL_UNIFORM_BUFFER, 0);
+        GLStateManager.glUnmapBuffer(GL31.GL_UNIFORM_BUFFER);
+        GLStateManager.glBindBuffer(GL31.GL_UNIFORM_BUFFER, 0);
         writePos = offset + stride;
         return offset;
     }

glsm/src/main/java/com/gtnewhorizons/angelica/glsm/texture/TextureInfoCache.java

@@ -9,6 +9,9 @@ import org.lwjgl.opengl.GL12;
 import org.lwjgl.opengl.GL13;
 import org.lwjgl.opengl.GL21;
 import org.lwjgl.opengl.GL30;
+import org.lwjgl.opengl.GL31;
+import org.lwjgl.opengl.GL32;
+import org.lwjgl.opengl.GL40;
 
 import java.nio.Buffer;
 import java.util.concurrent.locks.ReentrantLock;
@@ -101,6 +104,22 @@ public class TextureInfoCache {
         };
     }
 
+    public static boolean isProxyTarget(int target) {
+        return switch (target) {
+            case GL11.GL_PROXY_TEXTURE_1D,
+                 GL11.GL_PROXY_TEXTURE_2D,
+                 GL12.GL_PROXY_TEXTURE_3D,
+                 GL13.GL_PROXY_TEXTURE_CUBE_MAP,
+                 GL30.GL_PROXY_TEXTURE_1D_ARRAY,
+                 GL30.GL_PROXY_TEXTURE_2D_ARRAY,
+                 GL31.GL_PROXY_TEXTURE_RECTANGLE,
+                 GL32.GL_PROXY_TEXTURE_2D_MULTISAMPLE,
+                 GL32.GL_PROXY_TEXTURE_2D_MULTISAMPLE_ARRAY,
+                 GL40.GL_PROXY_TEXTURE_CUBE_MAP_ARRAY -> true;
+            default -> false;
+        };
+    }
+
     private static boolean isTrackedTarget(int target) {
         return target == GL11.GL_TEXTURE_2D
             || target == GL11.GL_TEXTURE_1D

glsm/src/main/java/com/gtnewhorizons/angelica/glsm/texture/TextureTargets.java

@@ -0,0 +1,30 @@
+package com.gtnewhorizons.angelica.glsm.texture;
+
+import org.lwjgl.opengl.GL11;
+import org.lwjgl.opengl.GL12;
+import org.lwjgl.opengl.GL13;
+import org.lwjgl.opengl.GL30;
+import org.lwjgl.opengl.GL31;
+import org.lwjgl.opengl.GL32;
+import org.lwjgl.opengl.GL40;
+
+public final class TextureTargets {
+
+    private TextureTargets() {}
+
+    public static boolean isProxyTarget(int target) {
+        return switch (target) {
+            case GL11.GL_PROXY_TEXTURE_1D,
+                 GL11.GL_PROXY_TEXTURE_2D,
+                 GL12.GL_PROXY_TEXTURE_3D,
+                 GL13.GL_PROXY_TEXTURE_CUBE_MAP,
+                 GL30.GL_PROXY_TEXTURE_1D_ARRAY,
+                 GL30.GL_PROXY_TEXTURE_2D_ARRAY,
+                 GL31.GL_PROXY_TEXTURE_RECTANGLE,
+                 GL32.GL_PROXY_TEXTURE_2D_MULTISAMPLE,
+                 GL32.GL_PROXY_TEXTURE_2D_MULTISAMPLE_ARRAY,
+                 GL40.GL_PROXY_TEXTURE_CUBE_MAP_ARRAY -> true;
+            default -> false;
+        };
+    }
+}

glsm/src/test/java/com/gtnewhorizons/angelica/glsm/GLSM_BlendFuncUnknownState_GLTest.java

@@ -0,0 +1,121 @@
+package com.gtnewhorizons.angelica.glsm;
+
+import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.lwjgl.opengl.GL11;
+import org.lwjgl.opengl.GL14;
+import org.lwjgl.opengl.GL30;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assumptions.assumeTrue;
+
+@GLCoreTest
+class GLSM_BlendFuncUnknownState_GLTest {
+
+    private static final int VANILLA_SRC_RGB = GL11.GL_SRC_ALPHA;
+    private static final int VANILLA_DST_RGB = GL11.GL_ONE_MINUS_SRC_ALPHA;
+    private static final int VANILLA_SRC_ALPHA = GL11.GL_ONE;
+    private static final int VANILLA_DST_ALPHA = GL11.GL_ZERO;
+
+    @BeforeEach
+    void requireBufferBlending() {
+        assumeTrue(RenderSystem.supportsBufferBlending());
+        drainGlErrors();
+    }
+
+    @AfterEach
+    void restoreDefaultBlendFunc() {
+        if (!RenderSystem.supportsBufferBlending()) return;
+        GLStateManager.tryBlendFuncSeparate(GL11.GL_ZERO, GL11.GL_ZERO, GL11.GL_ZERO, GL11.GL_ZERO);
+        GLStateManager.tryBlendFuncSeparate(GL11.GL_ONE, GL11.GL_ZERO, GL11.GL_ONE, GL11.GL_ZERO);
+        drainGlErrors();
+    }
+
+    private static void drainGlErrors() {
+        while (GL11.glGetError() != GL11.GL_NO_ERROR) {}
+    }
+
+    private static void seedVanillaSeparate() {
+        GLStateManager.tryBlendFuncSeparate(GL11.GL_ONE, GL11.GL_ONE, GL11.GL_ONE, GL11.GL_ONE);
+        GLStateManager.tryBlendFuncSeparate(VANILLA_SRC_RGB, VANILLA_DST_RGB, VANILLA_SRC_ALPHA, VANILLA_DST_ALPHA);
+    }
+
+    private static void overrideBufferZero() {
+        RenderSystem.blendFuncSeparatei(0, GL11.GL_ONE, GL11.GL_ONE, GL11.GL_ONE, GL11.GL_ONE);
+        assertBufferBlend(0, GL11.GL_ONE, GL11.GL_ONE, GL11.GL_ONE, GL11.GL_ONE);
+    }
+
+    private static void assertBufferBlend(int buffer, int srcRgb, int dstRgb, int srcAlpha, int dstAlpha) {
+        assertEquals(srcRgb, GL30.glGetInteger(GL14.GL_BLEND_SRC_RGB, buffer), "buffer " + buffer + " src rgb");
+        assertEquals(dstRgb, GL30.glGetInteger(GL14.GL_BLEND_DST_RGB, buffer), "buffer " + buffer + " dst rgb");
+        assertEquals(srcAlpha, GL30.glGetInteger(GL14.GL_BLEND_SRC_ALPHA, buffer), "buffer " + buffer + " src alpha");
+        assertEquals(dstAlpha, GL30.glGetInteger(GL14.GL_BLEND_DST_ALPHA, buffer), "buffer " + buffer + " dst alpha");
+    }
+
+    private static void assertVanillaOnBothBuffers() {
+        for (int buffer = 0; buffer < 2; buffer++) {
+            assertBufferBlend(buffer, VANILLA_SRC_RGB, VANILLA_DST_RGB, VANILLA_SRC_ALPHA, VANILLA_DST_ALPHA);
+        }
+        assertFalse(GLStateManager.getBlendState().isFuncUnknown(), "forward must clear the unknown flag");
+        assertEquals(GL11.GL_NO_ERROR, GL11.glGetError());
+    }
+
+    @Test
+    void tryBlendFuncSeparateForwardsAfterIndexedOverride() {
+        seedVanillaSeparate();
+        overrideBufferZero();
+
+        GLStateManager.tryBlendFuncSeparate(VANILLA_SRC_RGB, VANILLA_DST_RGB, VANILLA_SRC_ALPHA, VANILLA_DST_ALPHA);
+
+        assertVanillaOnBothBuffers();
+    }
+
+    @Test
+    void glBlendFuncForwardsAfterIndexedOverride() {
+        GLStateManager.glBlendFunc(GL11.GL_ONE, GL11.GL_ONE);
+        GLStateManager.glBlendFunc(GL11.GL_SRC_ALPHA, GL11.GL_ONE_MINUS_SRC_ALPHA);
+        overrideBufferZero();
+
+        GLStateManager.glBlendFunc(GL11.GL_SRC_ALPHA, GL11.GL_ONE_MINUS_SRC_ALPHA);
+
+        for (int buffer = 0; buffer < 2; buffer++) {
+            assertBufferBlend(buffer, GL11.GL_SRC_ALPHA, GL11.GL_ONE_MINUS_SRC_ALPHA, GL11.GL_SRC_ALPHA, GL11.GL_ONE_MINUS_SRC_ALPHA);
+        }
+        assertFalse(GLStateManager.getBlendState().isFuncUnknown(), "forward must clear the unknown flag");
+    }
+
+    @Test
+    void popAttribForwardsAfterIndexedOverride() {
+        seedVanillaSeparate();
+
+        GLStateManager.glPushAttrib(GL11.GL_COLOR_BUFFER_BIT);
+        try {
+            overrideBufferZero();
+        } finally {
+            GLStateManager.glPopAttrib();
+        }
+
+        assertVanillaOnBothBuffers();
+    }
+
+    @Test
+    void displayListReplayForwardsAfterIndexedOverride() {
+        final int list = GLStateManager.glGenLists(1);
+        try {
+            GLStateManager.glNewList(list, GL11.GL_COMPILE);
+            GLStateManager.tryBlendFuncSeparate(VANILLA_SRC_RGB, VANILLA_DST_RGB, VANILLA_SRC_ALPHA, VANILLA_DST_ALPHA);
+            GLStateManager.glEndList();
+
+            seedVanillaSeparate();
+            overrideBufferZero();
+
+            GLStateManager.glCallList(list);
+
+            assertVanillaOnBothBuffers();
+        } finally {
+            GLStateManager.glDeleteLists(list, 1);
+        }
+    }
+}

glsm/src/test/java/com/gtnewhorizons/angelica/glsm/GLSM_SamplerBinding_GLTest.java

@@ -0,0 +1,235 @@
+package com.gtnewhorizons.angelica.glsm;
+
+import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.lwjgl.opengl.GL11;
+import org.lwjgl.opengl.GL13;
+import org.lwjgl.opengl.GL33;
+
+import java.nio.ByteBuffer;
+import java.nio.ByteOrder;
+import java.nio.IntBuffer;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNotEquals;
+import static org.junit.jupiter.api.Assertions.assertThrows;
+import static org.junit.jupiter.api.Assumptions.assumeTrue;
+
+@GLCoreTest
+class GLSM_SamplerBinding_GLTest {
+
+    private static final int UNITS = 4;
+
+    @BeforeEach
+    void requireSamplerObjects() {
+        assumeTrue(RenderSystem.supportsSamplerObjects());
+        drainGlErrors();
+    }
+
+    @AfterEach
+    void unbindTestUnits() {
+        if (!RenderSystem.supportsSamplerObjects()) return;
+        for (int unit = 0; unit < UNITS; unit++) {
+            GLStateManager.glBindSampler(unit, 0);
+            GL33.glBindSampler(unit, 0);
+        }
+        GLStateManager.glActiveTexture(GL13.GL_TEXTURE0);
+        drainGlErrors();
+    }
+
+    private static void drainGlErrors() {
+        while (GL11.glGetError() != GL11.GL_NO_ERROR) {}
+    }
+
+    private static int driverBinding(int unit) {
+        final int saved = GL11.glGetInteger(GL13.GL_ACTIVE_TEXTURE);
+        GL13.glActiveTexture(GL13.GL_TEXTURE0 + unit);
+        final int binding = GL11.glGetInteger(GL33.GL_SAMPLER_BINDING);
+        GL13.glActiveTexture(saved);
+        return binding;
+    }
+
+    private static void assertUnits(String context, int... expected) {
+        for (int unit = 0; unit < expected.length; unit++) {
+            assertEquals(expected[unit], GLStateManager.getSamplerBinding(unit), context + ": cache unit " + unit);
+            assertEquals(expected[unit], driverBinding(unit), context + ": driver unit " + unit);
+        }
+    }
+
+    private static IntBuffer ints(int... values) {
+        final IntBuffer buf = ByteBuffer.allocateDirect(values.length * 4).order(ByteOrder.nativeOrder()).asIntBuffer();
+        buf.put(values).flip();
+        return buf;
+    }
+
+    @Test
+    void renderSystemRebindAfterGlsmUnbindReachesDriver() {
+        final int sampler = RenderSystem.genSampler();
+        try {
+            RenderSystem.bindSamplerToUnit(0, sampler);
+            GLStateManager.glBindSampler(0, 0);
+            assertEquals(0, driverBinding(0), "setup: GLSM unbind must reach the driver");
+
+            RenderSystem.bindSamplerToUnit(0, sampler);
+
+            assertEquals(sampler, driverBinding(0), "RenderSystem skipped a bind the driver no longer holds");
+        } finally {
+            RenderSystem.destroySampler(sampler);
+        }
+    }
+
+    @Test
+    void deleteClearsEveryUnitAndTheNextBindReachesDriver() {
+        final int sampler = RenderSystem.genSampler();
+        GLStateManager.glBindSampler(1, sampler);
+        GLStateManager.glBindSampler(3, sampler);
+
+        GLStateManager.glDeleteSamplers(sampler);
+
+        assertUnits("after delete", 0, 0, 0, 0);
+
+        final int next = RenderSystem.genSampler();
+        try {
+            GLStateManager.glBindSampler(1, next);
+            assertEquals(next, driverBinding(1), "bind after delete never reached the driver");
+        } finally {
+            RenderSystem.destroySampler(next);
+        }
+    }
+
+    @Test
+    void samplerBindingQueryAnswersForTheActiveUnit() {
+        final int sampler = RenderSystem.genSampler();
+        try {
+            GLStateManager.glBindSampler(1, sampler);
+
+            GLStateManager.glActiveTexture(GL13.GL_TEXTURE1);
+            assertEquals(GL11.glGetInteger(GL33.GL_SAMPLER_BINDING),
+                GLStateManager.glGetInteger(GL33.GL_SAMPLER_BINDING));
+            assertEquals(sampler, GLStateManager.glGetInteger(GL33.GL_SAMPLER_BINDING));
+
+            GLStateManager.glActiveTexture(GL13.GL_TEXTURE0);
+            assertEquals(GL11.glGetInteger(GL33.GL_SAMPLER_BINDING),
+                GLStateManager.glGetInteger(GL33.GL_SAMPLER_BINDING));
+            assertEquals(0, GLStateManager.glGetInteger(GL33.GL_SAMPLER_BINDING));
+        } finally {
+            RenderSystem.destroySampler(sampler);
+        }
+    }
+
+    @Test
+    void unbindAllSamplersClearsUnitsBoundThroughGlsm() {
+        final int sampler = RenderSystem.genSampler();
+        try {
+            GLStateManager.glBindSampler(1, sampler);
+            GLStateManager.glBindSampler(3, sampler);
+
+            RenderSystem.unbindAllSamplers();
+
+            assertEquals(0, driverBinding(1), "unit 1 still bound on the driver");
+            assertEquals(0, driverBinding(3), "unit 3 still bound on the driver");
+            assertEquals(0, GLStateManager.getSamplerBinding(1));
+            assertEquals(0, GLStateManager.getSamplerBinding(3));
+        } finally {
+            RenderSystem.destroySampler(sampler);
+        }
+    }
+
+    @Test
+    void replayForwardsCachedSamplerBindings() {
+        final int sampler = RenderSystem.genSampler();
+        try {
+            GLStateManager.glBindSampler(2, sampler);
+            GL33.glBindSampler(2, 0);
+            assertEquals(0, driverBinding(2), "setup failed to diverge the driver");
+
+            GLStateManager.replayStateToBackend();
+
+            assertEquals(sampler, driverBinding(2), "replay dropped a cached sampler binding");
+        } finally {
+            RenderSystem.destroySampler(sampler);
+        }
+    }
+
+    @Test
+    void intBufferGenFillsFromPositionWithBindableSamplers() {
+        final IntBuffer buf = ints(-1, 0, 0);
+        buf.position(1);
+        GLStateManager.glGenSamplers(buf);
+        final int a = buf.get(1);
+        final int b = buf.get(2);
+        try {
+            assertEquals(-1, buf.get(0), "slot before position was overwritten");
+            assertEquals(1, buf.position(), "gen must not move the buffer position");
+            assertNotEquals(0, a);
+            assertNotEquals(0, b);
+            assertNotEquals(a, b);
+
+            GLStateManager.glBindSampler(0, a);
+            GLStateManager.glBindSampler(1, b);
+
+            assertEquals(GL11.GL_NO_ERROR, GL11.glGetError(), "generated name rejected by the driver");
+            assertEquals(a, driverBinding(0));
+            assertEquals(b, driverBinding(1));
+        } finally {
+            GLStateManager.glDeleteSamplers(a);
+            GLStateManager.glDeleteSamplers(b);
+        }
+    }
+
+    @Test
+    void bindSamplersFormsBindFromPosition() {
+        final int a = RenderSystem.genSampler();
+        final int b = RenderSystem.genSampler();
+        try {
+            final IntBuffer buf = ints(-1, a, b);
+            buf.position(1);
+
+            GLStateManager.glBindSamplers(1, 2, buf);
+            assertEquals(1, buf.position(), "count form must not move the buffer position");
+            assertUnits("count form", 0, a, b, 0);
+
+            GLStateManager.glBindSampler(1, 0);
+            GLStateManager.glBindSampler(2, 0);
+            buf.position(1);
+
+            GLStateManager.glBindSamplers(1, buf);
+            assertEquals(1, buf.position(), "remaining form must not move the buffer position");
+            assertUnits("remaining form", 0, a, b, 0);
+
+            GLStateManager.glBindSamplers(1, (IntBuffer) null);
+            assertUnits("null remaining form", 0, a, b, 0);
+
+            GLStateManager.glBindSamplers(2, new int[]{a, b});
+            assertUnits("int[] form", 0, a, a, b);
+        } finally {
+            RenderSystem.destroySampler(a);
+            RenderSystem.destroySampler(b);
+        }
+    }
+
+    @Test
+    void bindSamplersNullUnbindsRangeAndShortBufferThrows() {
+        final int prior = RenderSystem.genSampler();
+        final int next = RenderSystem.genSampler();
+        try {
+            for (int unit = 0; unit < UNITS; unit++) GLStateManager.glBindSampler(unit, prior);
+
+            GLStateManager.glBindSamplers(1, 2, (IntBuffer) null);
+
+            assertUnits("null count form", prior, 0, 0, prior);
+
+            for (int unit = 0; unit < UNITS; unit++) GLStateManager.glBindSampler(unit, prior);
+            final IntBuffer buf = ints(next, next);
+
+            assertThrows(IllegalArgumentException.class, () -> GLStateManager.glBindSamplers(0, UNITS, buf));
+
+            assertEquals(0, buf.position());
+            assertUnits("short buffer", prior, prior, prior, prior);
+        } finally {
+            RenderSystem.destroySampler(prior);
+            RenderSystem.destroySampler(next);
+        }
+    }
+}

glsm/src/test/java/com/gtnewhorizons/angelica/glsm/GLSM_TextureBindingTargetCache_UnitTest.java

@@ -42,6 +42,28 @@ public class GLSM_TextureBindingTargetCache_UnitTest {
         }
     }
 
+    @Test
+    void proxyTargetBindIsNeitherForwardedNorCached() {
+        drainErrors();
+        final int t2d = GL11.glGenTextures();
+        try {
+            GLStateManager.glActiveTexture(GL13.GL_TEXTURE5);
+            GLStateManager.glBindTexture(GL11.GL_TEXTURE_2D, t2d);
+
+            GLStateManager.glBindTexture(GL11.GL_PROXY_TEXTURE_2D, 0);
+            GLStateManager.glBindTexture(GL12.GL_PROXY_TEXTURE_3D, t2d);
+
+            assertEquals(GL11.GL_NO_ERROR, GL11.glGetError(), "a proxy target must never reach the driver");
+            assertEquals(t2d, GLStateManager.getBoundTextureForServerState(5), "a proxy bind must not disturb the cache");
+            assertEquals(t2d, GL11.glGetInteger(GL11.GL_TEXTURE_BINDING_2D));
+        } finally {
+            GLStateManager.glBindTexture(GL11.GL_TEXTURE_2D, 0);
+            GLStateManager.glActiveTexture(GL13.GL_TEXTURE0);
+            GLStateManager.glDeleteTextures(t2d);
+            drainErrors();
+        }
+    }
+
     @Test
     void popAttribRestoresRecordedTarget() {
         drainErrors();

glsm/src/test/java/com/gtnewhorizons/angelica/glsm/GLSM_TextureUploadGeneration_GLTest.java

@@ -22,6 +22,21 @@ public class GLSM_TextureUploadGeneration_GLTest {
         return texId;
     }
 
+    @Test
+    void aLevelBeyondTheShiftWidthClampsToOne() {
+        final int texId = allocate(64);
+        try {
+            assertEquals(64, GLStateManager.glGetTexLevelParameteri(GL11.GL_TEXTURE_2D, 0, GL11.GL_TEXTURE_WIDTH));
+            assertEquals(1, GLStateManager.glGetTexLevelParameteri(GL11.GL_TEXTURE_2D, 6, GL11.GL_TEXTURE_WIDTH));
+            assertEquals(1, GLStateManager.glGetTexLevelParameteri(GL11.GL_TEXTURE_2D, 31, GL11.GL_TEXTURE_WIDTH));
+            assertEquals(1, GLStateManager.glGetTexLevelParameteri(GL11.GL_TEXTURE_2D, 32, GL11.GL_TEXTURE_WIDTH));
+            assertEquals(1, GLStateManager.glGetTexLevelParameteri(GL11.GL_TEXTURE_2D, 64, GL11.GL_TEXTURE_HEIGHT));
+        } finally {
+            GLStateManager.glBindTexture(GL11.GL_TEXTURE_2D, 0);
+            GLStateManager.glDeleteTextures(texId);
+        }
+    }
+
     @Test
     void anUploadLeavesANonZeroGeneration() {
         final int texId = allocate(4);

glsm/src/test/java/com/gtnewhorizons/angelica/glsm/backend/BackendPolicyTest.java

@@ -44,22 +44,48 @@ class BackendPolicyTest {
     }
 
     @Test
-    void refreshPrefersTheExactRational() {
-        assertEquals(144, RenderBackend.refreshHzFrom(144, 1, 0.0f));
-        assertEquals(60, RenderBackend.refreshHzFrom(60000, 1001, 0.0f));
+    void periodPrefersTheExactRational() {
+        assertEquals(16_683_333L, RenderBackend.periodFromRational(60000, 1001, 0.0f));
+        assertEquals(6_944_444L, RenderBackend.periodFromRational(144, 1, 0.0f));
     }
 
     @Test
-    void refreshRoundsUp() {
-        assertEquals(144, RenderBackend.refreshHzFrom(0, 0, 143.98f));
-        assertEquals(60, RenderBackend.refreshHzFrom(0, 0, 59.94f));
-        assertEquals(60, RenderBackend.refreshHzFrom(0, 0, 60.0f));
+    void periodFallsBackToTheFloatRate() {
+        assertEquals(16_683_350L, RenderBackend.periodFromRational(0, 0, 59.94f));
+        assertEquals(16_666_667L, RenderBackend.periodFromRational(0, 0, 60.0f));
     }
 
     @Test
-    void refreshIsZeroWhenUnknown() {
-        assertEquals(0, RenderBackend.refreshHzFrom(0, 0, 0.0f));
-        assertEquals(0, RenderBackend.refreshHzFrom(-1, -1, -1.0f));
-        assertEquals(0, RenderBackend.refreshHzFrom(144, 0, 0.0f));
+    void periodIsZeroWhenUnknown() {
+        assertEquals(0L, RenderBackend.periodFromRational(0, 0, 0.0f));
+        assertEquals(0L, RenderBackend.periodFromRational(-1, -1, -1.0f));
+        assertEquals(0L, RenderBackend.periodFromRational(144, 0, 0.0f));
+    }
+
+    @Test
+    void integerNtscRatesAreAdjusted() {
+        assertEquals(16_683_333L, RenderBackend.periodFromIntegerHz(59));
+        assertEquals(6_951_389L, RenderBackend.periodFromIntegerHz(143));
+        assertEquals(16_666_667L, RenderBackend.periodFromIntegerHz(60));
+        assertEquals(6_944_444L, RenderBackend.periodFromIntegerHz(144));
+        assertEquals(0L, RenderBackend.periodFromIntegerHz(0));
+        assertEquals(0L, RenderBackend.periodFromIntegerHz(-60));
+        assertEquals(60, RenderBackend.hzFromPeriod(RenderBackend.periodFromIntegerHz(59)));
+    }
+
+    @Test
+    void hzFromPeriodRoundsToNearest() {
+        assertEquals(60, RenderBackend.hzFromPeriod(16_666_667L));
+        assertEquals(144, RenderBackend.hzFromPeriod(6_944_444L));
+        assertEquals(0, RenderBackend.hzFromPeriod(0L));
+        assertEquals(0, RenderBackend.hzFromPeriod(-1L));
+    }
+
+    @Test
+    void plausiblePeriodFilterKeeps20To1000Hz() {
+        assertEquals(0L, RenderBackend.plausiblePeriodNanos(999_000L));
+        assertEquals(1_000_000L, RenderBackend.plausiblePeriodNanos(1_000_000L));
+        assertEquals(50_000_000L, RenderBackend.plausiblePeriodNanos(50_000_000L));
+        assertEquals(0L, RenderBackend.plausiblePeriodNanos(51_000_000L));
     }
 }

glsm/src/test/java/com/gtnewhorizons/angelica/glsm/backend/GateRecorderTest.java

@@ -0,0 +1,72 @@
+package com.gtnewhorizons.angelica.glsm.backend;
+
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+class GateRecorderTest {
+
+    @Test
+    void theLongestBlockWithinAFrameWinsRegardlessOfOrder() {
+        final RenderBackend.GateRecorder longestFirst = new RenderBackend.GateRecorder();
+        longestFirst.recordGate(5_000_000L, 100L);
+        longestFirst.recordGate(1_000_000L, 200L);
+
+        final RenderBackend.GateSample out = new RenderBackend.GateSample();
+        longestFirst.readGateSample(out);
+        assertEquals(5_000_000L, out.durationNanos);
+        assertEquals(100L, out.endNanos);
+
+        final RenderBackend.GateRecorder shortestFirst = new RenderBackend.GateRecorder();
+        shortestFirst.recordGate(1_000_000L, 10L);
+        shortestFirst.recordGate(4_000_000L, 20L);
+
+        shortestFirst.readGateSample(out);
+        assertEquals(4_000_000L, out.durationNanos);
+        assertEquals(20L, out.endNanos);
+    }
+
+    @Test
+    void aReadConsumesTheSample() {
+        final RenderBackend.GateRecorder recorder = new RenderBackend.GateRecorder();
+        recorder.recordGate(2_000_000L, 50L);
+
+        final RenderBackend.GateSample out = new RenderBackend.GateSample();
+        recorder.readGateSample(out);
+
+        recorder.readGateSample(out);
+        assertEquals(0L, out.endNanos);
+        assertEquals(0L, out.durationNanos);
+    }
+
+    @Test
+    void gpuWaitAccumulatesAndResetsOnRead() {
+        final RenderBackend.GateRecorder recorder = new RenderBackend.GateRecorder();
+        recorder.recordGate(1_000_000L, 10L);
+        recorder.recordGpuWait(300L);
+        recorder.recordGpuWait(700L);
+
+        final RenderBackend.GateSample out = new RenderBackend.GateSample();
+        recorder.readGateSample(out);
+        assertEquals(1_000L, out.gpuWaitNanos);
+
+        recorder.recordGate(1_000_000L, 11L);
+        recorder.readGateSample(out);
+        assertEquals(0L, out.gpuWaitNanos);
+    }
+
+    @Test
+    void gpuWaitIsDrainedOnASampleFreeRead() {
+        final RenderBackend.GateRecorder recorder = new RenderBackend.GateRecorder();
+        recorder.recordGpuWait(450L);
+
+        final RenderBackend.GateSample out = new RenderBackend.GateSample();
+        recorder.readGateSample(out);
+
+        assertEquals(0L, out.endNanos);
+        assertEquals(450L, out.gpuWaitNanos);
+
+        recorder.readGateSample(out);
+        assertEquals(0L, out.gpuWaitNanos);
+    }
+}

glsm/src/test/java/com/gtnewhorizons/angelica/glsm/backend/MainThreadPumpTest.java

@@ -0,0 +1,153 @@
+package com.gtnewhorizons.angelica.glsm.backend;
+
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.Timeout;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.Deque;
+import java.util.List;
+import java.util.concurrent.ConcurrentLinkedDeque;
+import java.util.concurrent.Executor;
+import java.util.concurrent.atomic.AtomicInteger;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertSame;
+import static org.junit.jupiter.api.Assertions.assertThrows;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+@Timeout(10)
+class MainThreadPumpTest {
+
+    private static final class DeferredExecutor implements Executor {
+        final Deque<Runnable> tasks = new ConcurrentLinkedDeque<>();
+
+        @Override
+        public void execute(Runnable command) {
+            tasks.add(command);
+        }
+
+        void runNext() {
+            tasks.removeFirst().run();
+        }
+
+        void awaitTask() {
+            while (tasks.isEmpty()) {
+                Thread.onSpinWait();
+            }
+        }
+    }
+
+    private static final class InlineExecutor implements Executor {
+        final List<Runnable> submitted = Collections.synchronizedList(new ArrayList<>());
+
+        @Override
+        public void execute(Runnable command) {
+            submitted.add(command);
+            command.run();
+        }
+    }
+
+    private static void awaitWaiting(Thread t) {
+        while (t.getState() != Thread.State.WAITING && t.getState() != Thread.State.TIMED_WAITING) {
+            assertTrue(t.isAlive(), "thread died instead of blocking");
+            Thread.onSpinWait();
+        }
+    }
+
+    private static MainThreadPump pump(Executor executor, Runnable pumpBody, Runnable pollBody) {
+        return new MainThreadPump(executor, () -> false, pumpBody, pollBody);
+    }
+
+    @Test
+    void repeatedPumpsSubmitTheSameRunnable() {
+        final InlineExecutor executor = new InlineExecutor();
+        final AtomicInteger pumps = new AtomicInteger();
+        final AtomicInteger polls = new AtomicInteger();
+        final MainThreadPump p = pump(executor, pumps::incrementAndGet, polls::incrementAndGet);
+
+        for (int i = 0; i < 16; i++) {
+            p.pumpMessages();
+        }
+
+        assertEquals(16, executor.submitted.size());
+        assertEquals(16, pumps.get());
+        assertEquals(16, polls.get());
+        final Runnable first = executor.submitted.get(0);
+        for (Runnable r : executor.submitted) {
+            assertSame(first, r, "pump must not allocate a new task per call");
+        }
+    }
+
+    @Test
+    void pumpBlocksUntilTheMainThreadRunsTheTask() throws Exception {
+        final DeferredExecutor executor = new DeferredExecutor();
+        final AtomicInteger polls = new AtomicInteger();
+        final MainThreadPump p = pump(executor, () -> {}, polls::incrementAndGet);
+
+        final Thread caller = new Thread(p::pumpMessages, "pump-caller");
+        caller.start();
+        awaitWaiting(caller);
+        executor.awaitTask();
+        assertEquals(1, executor.tasks.size());
+        assertEquals(0, polls.get());
+
+        executor.runNext();
+        caller.join();
+        assertEquals(1, polls.get());
+    }
+
+    @Test
+    void aThrowingBodyPropagatesToTheCallerAndDoesNotLeaveItParked() {
+        final InlineExecutor executor = new InlineExecutor();
+        final AtomicInteger polls = new AtomicInteger();
+        final AtomicInteger pumps = new AtomicInteger();
+        final MainThreadPump p = pump(executor, () -> {
+            if (pumps.incrementAndGet() == 1) throw new IllegalStateException("boom");
+        }, polls::incrementAndGet);
+
+        final IllegalStateException thrown = assertThrows(IllegalStateException.class, p::pumpMessages);
+        assertEquals("boom", thrown.getMessage());
+        assertEquals(0, polls.get(), "poll must not run when the pump body failed");
+
+        p.pumpMessages();
+        assertEquals(1, polls.get(), "a failed pump must not poison the next one");
+    }
+
+    @Test
+    void mainThreadCallersRunInlineWithoutTheExecutor() {
+        final InlineExecutor executor = new InlineExecutor();
+        final AtomicInteger pumps = new AtomicInteger();
+        final AtomicInteger polls = new AtomicInteger();
+        final MainThreadPump p = new MainThreadPump(executor, () -> true, pumps::incrementAndGet,
+            polls::incrementAndGet);
+
+        p.pumpMessages();
+
+        assertTrue(executor.submitted.isEmpty(), "the main thread must not hop through the executor");
+        assertEquals(1, pumps.get());
+        assertEquals(1, polls.get());
+    }
+
+    @Test
+    void anInterruptedCallerCompletesAndKeepsItsInterruptFlag() throws Exception {
+        final DeferredExecutor executor = new DeferredExecutor();
+        final MainThreadPump p = pump(executor, () -> {}, () -> {});
+        final AtomicInteger stillInterrupted = new AtomicInteger(-1);
+
+        final Thread caller = new Thread(() -> {
+            p.pumpMessages();
+            stillInterrupted.set(Thread.currentThread().isInterrupted() ? 1 : 0);
+        }, "pump-interrupted-caller");
+        caller.start();
+        awaitWaiting(caller);
+        executor.awaitTask();
+        caller.interrupt();
+        assertFalse(executor.tasks.isEmpty());
+
+        executor.runNext();
+        caller.join();
+        assertEquals(1, stillInterrupted.get());
+    }
+}

glsm/src/test/java/com/gtnewhorizons/angelica/glsm/hooks/GLSMInitConfigDefaultsTest.java

@@ -0,0 +1,15 @@
+package com.gtnewhorizons.angelica.glsm.hooks;
+
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+class GLSMInitConfigDefaultsTest {
+
+    @Test
+    void emptyBuilderLeavesDsaToTheProbe() {
+        assertTrue(GLSMInitConfig.builder().build().isDSAEnabled());
+        assertFalse(GLSMInitConfig.builder().enableDSA(false).build().isDSAEnabled());
+    }
+}

glsm/src/test/java/com/gtnewhorizons/angelica/glsm/loading/ModRedirectorTest.java

@@ -0,0 +1,127 @@
+package com.gtnewhorizons.angelica.glsm.loading;
+
+import com.gtnewhorizons.angelica.glsm.redirect.GLSMRedirector;
+import org.junit.jupiter.api.Test;
+import org.objectweb.asm.ClassWriter;
+import org.objectweb.asm.Opcodes;
+import org.objectweb.asm.tree.ClassNode;
+import org.objectweb.asm.tree.InsnNode;
+import org.objectweb.asm.tree.MethodInsnNode;
+import org.objectweb.asm.tree.MethodNode;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNotSame;
+import static org.junit.jupiter.api.Assertions.assertNull;
+import static org.junit.jupiter.api.Assertions.assertSame;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+class ModRedirectorTest {
+
+    private static final String EXTRA_EXCLUSION = "com.example.excluded";
+
+    private static ClassNode emptyClass() {
+        final ClassNode cn = new ClassNode();
+        cn.version = Opcodes.V1_8;
+        cn.access = Opcodes.ACC_PUBLIC;
+        cn.name = "com/example/TestClass";
+        cn.superName = "java/lang/Object";
+        cn.methods = new ArrayList<>();
+
+        final MethodNode mn = new MethodNode(Opcodes.ACC_PUBLIC | Opcodes.ACC_STATIC, "test", "()V", null, null);
+        mn.instructions.add(new InsnNode(Opcodes.RETURN));
+        cn.methods.add(mn);
+        return cn;
+    }
+
+    private static byte[] bytesWithoutGlCall() {
+        return toBytes(emptyClass());
+    }
+
+    private static byte[] bytesWithGlCall() {
+        final ClassNode cn = emptyClass();
+        final MethodNode mn = cn.methods.get(0);
+        mn.instructions.clear();
+        mn.instructions.add(new MethodInsnNode(Opcodes.INVOKESTATIC, "org/lwjgl/opengl/GL11", "glPopMatrix", "()V", false));
+        mn.instructions.add(new InsnNode(Opcodes.RETURN));
+        return toBytes(cn);
+    }
+
+    private static byte[] toBytes(ClassNode cn) {
+        final ClassWriter cw = new ClassWriter(0);
+        cn.accept(cw);
+        return cw.toByteArray();
+    }
+
+    private static ModRedirector redirector() {
+        return new ModRedirector(ClassDump.DISABLED, EXTRA_EXCLUSION);
+    }
+
+    private static void assertStandardExclusions(String[] actual) {
+        final List<String> exclusions = Arrays.asList(actual);
+        final String[] coreExclusions = new GLSMRedirector().getCoreExclusions();
+        for (String coreExclusion : coreExclusions) {
+            assertTrue(exclusions.contains(coreExclusion), coreExclusion);
+        }
+        assertTrue(exclusions.contains("com.gtnewhorizons.angelica.lwjgl3."));
+        assertTrue(exclusions.contains(EXTRA_EXCLUSION));
+        assertEquals(coreExclusions.length + 2, exclusions.size(), exclusions.toString());
+    }
+
+    @Test
+    void exclusionsCombineCoreLwjgl3AndExtra() {
+        assertStandardExclusions(redirector().getTransformerExclusions());
+    }
+
+    @Test
+    void earlyRedirectorExclusionsCombineCoreLwjgl3AndExtra() {
+        assertStandardExclusions(new EarlyRedirectorCore(EXTRA_EXCLUSION).getTransformerExclusions());
+    }
+
+    @Test
+    void nullInputReturnsNull() {
+        assertNull(redirector().transform("com.example.TestClass", null, this));
+    }
+
+    @Test
+    void excludedPrefixReturnsOriginalArray() {
+        final byte[] original = bytesWithGlCall();
+        assertSame(original, redirector().transform(EXTRA_EXCLUSION + ".TestClass", original, this));
+    }
+
+    @Test
+    void coreExcludedPrefixReturnsOriginalArray() {
+        final byte[] original = bytesWithGlCall();
+        assertSame(original, redirector().transform("org.lwjgl.opengl.TestClass", original, this));
+    }
+
+    @Test
+    void unchangedClassReturnsOriginalArray() {
+        final byte[] original = bytesWithoutGlCall();
+        assertSame(original, redirector().transform("com.example.TestClass", original, this));
+    }
+
+    @Test
+    void redirectedClassReturnsNewArray() {
+        final byte[] original = bytesWithGlCall();
+        assertNotSame(original, redirector().transform("com.example.TestClass", original, this));
+    }
+
+    @Test
+    void earlyRedirectorSkipsClassesOutsideItsTargets() {
+        final byte[] original = bytesWithGlCall();
+        final EarlyRedirectorCore early = new EarlyRedirectorCore(EXTRA_EXCLUSION);
+        assertSame(original, early.transform("com.example.TestClass", original, this));
+    }
+
+    @Test
+    void earlyRedirectorTransformsItsTargets() {
+        final byte[] original = bytesWithGlCall();
+        final EarlyRedirectorCore early = new EarlyRedirectorCore(EXTRA_EXCLUSION);
+        final String target = EcosystemNarrowRules.EARLY_REDIRECTOR_TARGETS[0] + "TestClass";
+        assertNotSame(original, early.transform(target, original, this));
+    }
+}

glsm/src/test/java/com/gtnewhorizons/angelica/glsm/redirect/GLSMRedirectorTest.java

@@ -17,6 +17,8 @@ import org.objectweb.asm.tree.MethodInsnNode;
 import org.objectweb.asm.tree.MethodNode;
 
 import java.lang.reflect.Field;
+import java.lang.reflect.Method;
+import java.lang.reflect.Modifier;
 import java.util.ArrayList;
 import java.util.Set;
 
@@ -300,6 +302,74 @@ class GLSMRedirectorTest {
         assertTrue(unmappedSeen().isEmpty(), owner + "." + name + " should not be recorded");
     }
 
+    private static boolean glsmDeclares(String name, String desc) throws ClassNotFoundException {
+        final Class<?> glsm = Class.forName(GLSM.replace('/', '.'), false, GLSMRedirectorTest.class.getClassLoader());
+        for (Method m : glsm.getDeclaredMethods()) {
+            final int mods = m.getModifiers();
+            if (!Modifier.isPublic(mods) || !Modifier.isStatic(mods) || !m.getName().equals(name)) continue;
+            if (Type.getMethodDescriptor(m).equals(desc)) return true;
+        }
+        return false;
+    }
+
+    private static void assertRedirectedToDeclaredTarget(String[][] cases) throws ClassNotFoundException {
+        for (boolean aware : new boolean[]{false, true}) {
+            for (String[] c : cases) {
+                final String call = c[0] + "." + c[1] + c[2] + (aware ? " aware" : "");
+                final ClassNode cn = makeClassWithMethodCall(c[0], c[1], c[2]);
+                assertTrue(new GLSMRedirector().transformClassNode("com.example.TestClass", cn, aware), call);
+                final MethodInsnNode target = firstCall(cn);
+                assertEquals(GLSM, target.owner, call);
+                assertEquals(c[1], target.name, call);
+                assertEquals(c[2], target.desc, call);
+                assertTrue(glsmDeclares(target.name, target.desc), () -> "GLStateManager lacks the target of " + call);
+            }
+        }
+        assertTrue(unmappedSeen().isEmpty(), () -> "unexpected reports: " + unmappedSeen());
+    }
+
+    @Test
+    void samplerGenDeleteOverloadsHaveDeclaredTargets() throws Exception {
+        assertRedirectedToDeclaredTarget(new String[][]{
+            {"org/lwjgl/opengl/GL33", "glGenSamplers", "()I"},
+            {"org/lwjgl/opengl/GL33", "glGenSamplers", "(Ljava/nio/IntBuffer;)V"},
+            {"org/lwjgl/opengl/GL33C", "glGenSamplers", "([I)V"},
+            {"org/lwjgl/opengl/GL33", "glGenSamplers", "([I)V"},
+            {"org/lwjgl/opengl/GL33", "glDeleteSamplers", "(I)V"},
+            {"org/lwjgl/opengl/GL33", "glDeleteSamplers", "(Ljava/nio/IntBuffer;)V"},
+            {"org/lwjgl/opengl/GL33C", "glDeleteSamplers", "([I)V"},
+            {"org/lwjgl/opengl/GL33", "glDeleteSamplers", "([I)V"},
+        });
+    }
+
+    @Test
+    void bindSamplersHasDeclaredTargets() throws Exception {
+        assertRedirectedToDeclaredTarget(new String[][]{
+            {"org/lwjgl/opengl/GL44", "glBindSamplers", "(IILjava/nio/IntBuffer;)V"},
+            {"org/lwjgl/opengl/GL44C", "glBindSamplers", "(ILjava/nio/IntBuffer;)V"},
+            {"org/lwjgl/opengl/GL44", "glBindSamplers", "(I[I)V"},
+            {"org/lwjgl/opengl/ARBMultiBind", "glBindSamplers", "(IILjava/nio/IntBuffer;)V"},
+            {"org/lwjgl/opengl/ARBMultiBind", "glBindSamplers", "(ILjava/nio/IntBuffer;)V"},
+            {"org/lwjgl/opengl/ARBMultiBind", "glBindSamplers", "(I[I)V"},
+        });
+    }
+
+    @Test
+    void arbSamplerObjectsHasDeclaredTargets() throws Exception {
+        assertRedirectedToDeclaredTarget(new String[][]{
+            {"org/lwjgl/opengl/ARBSamplerObjects", "glGenSamplers", "()I"},
+            {"org/lwjgl/opengl/ARBSamplerObjects", "glGenSamplers", "(Ljava/nio/IntBuffer;)V"},
+            {"org/lwjgl/opengl/ARBSamplerObjects", "glGenSamplers", "([I)V"},
+            {"org/lwjgl/opengl/ARBSamplerObjects", "glDeleteSamplers", "(I)V"},
+            {"org/lwjgl/opengl/ARBSamplerObjects", "glDeleteSamplers", "(Ljava/nio/IntBuffer;)V"},
+            {"org/lwjgl/opengl/ARBSamplerObjects", "glDeleteSamplers", "([I)V"},
+            {"org/lwjgl/opengl/ARBSamplerObjects", "glIsSampler", "(I)Z"},
+            {"org/lwjgl/opengl/ARBSamplerObjects", "glBindSampler", "(II)V"},
+            {"org/lwjgl/opengl/ARBSamplerObjects", "glSamplerParameteri", "(III)V"},
+            {"org/lwjgl/opengl/ARBSamplerObjects", "glSamplerParameterf", "(IIF)V"},
+        });
+    }
+
     @Test
     void descKeyedSyncRedirectsOnlyLongForm() {
         assertRedirected("org/lwjgl/opengl/GL32C", "glFenceSync", "(II)J", "glFenceSync");

glsm/src/test/java/com/gtnewhorizons/angelica/glsm/streaming/StreamingBindingCacheGLTest.java

@@ -0,0 +1,104 @@
+package com.gtnewhorizons.angelica.glsm.streaming;
+
+import com.gtnewhorizons.angelica.glsm.GLCoreTest;
+import com.gtnewhorizons.angelica.glsm.GLStateManager;
+import com.gtnewhorizons.angelica.glsm.RenderSystem;
+import com.gtnewhorizons.angelica.glsm.ffp.FfpExtendedAttribs;
+import com.gtnewhorizons.angelica.glsm.streaming.StreamingUploader.UploadStrategy;
+import com.gtnewhorizons.angelica.glsm.testutil.Reflect;
+import it.unimi.dsi.fastutil.ints.Int2IntMap;
+import it.unimi.dsi.fastutil.ints.IntSet;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.params.ParameterizedTest;
+import org.junit.jupiter.params.provider.EnumSource;
+import org.lwjgl.opengl.GL11;
+import org.lwjgl.opengl.GL15;
+import org.lwjgl.opengl.GL31;
+
+import java.nio.ByteBuffer;
+
+import static com.gtnewhorizon.gtnhlib.bytebuf.MemoryUtilities.memAlloc;
+import static com.gtnewhorizon.gtnhlib.bytebuf.MemoryUtilities.memFree;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+import static org.junit.jupiter.api.Assumptions.assumeTrue;
+
+@GLCoreTest
+class StreamingBindingCacheGLTest {
+
+    private static ByteBuffer filled(int bytes) {
+        final ByteBuffer data = memAlloc(bytes);
+        for (int i = 0; i < bytes; i++) {
+            data.put(i, (byte) i);
+        }
+        data.position(0).limit(bytes);
+        return data;
+    }
+
+    private static int glsmUniformBufferBinding() {
+        final Object ctx = Reflect.invokeStatic(GLStateManager.class, "ctx", new Class<?>[0]);
+        final Int2IntMap bound = Reflect.get(ctx, "boundOtherBuffers");
+        return bound.get(GL31.GL_UNIFORM_BUFFER);
+    }
+
+    @ParameterizedTest
+    @EnumSource(UploadStrategy.class)
+    void orphanUploadLeavesTheArrayBufferCacheMatchingTheDriver(UploadStrategy strategy) {
+        final int other = GLStateManager.glGenBuffers();
+        final OrphanStreamingBuffer buf = new OrphanStreamingBuffer();
+        final ByteBuffer data = filled(64);
+        try {
+            GLStateManager.glBindBuffer(GL15.GL_ARRAY_BUFFER, other);
+            buf.upload(strategy, data);
+            assertEquals(GL11.glGetInteger(GL15.GL_ARRAY_BUFFER_BINDING), GLStateManager.getBoundVBO(), "first upload respecifies the buffer");
+            GLStateManager.glBindBuffer(GL15.GL_ARRAY_BUFFER, other);
+            buf.upload(strategy, data);
+            assertEquals(GL11.glGetInteger(GL15.GL_ARRAY_BUFFER_BINDING), GLStateManager.getBoundVBO(), "second upload takes the in-capacity path");
+        } finally {
+            memFree(data);
+            buf.destroy();
+            GLStateManager.glDeleteBuffers(other);
+        }
+    }
+
+    @Test
+    void uniformRingOrphanPathLeavesTheUniformBufferCacheMatchingTheDriver() {
+        final int other = GLStateManager.glGenBuffers();
+        final ByteBuffer src = filled(64);
+        UniformRingBuffer ring = null;
+        try {
+            GLStateManager.glBindBuffer(GL31.GL_UNIFORM_BUFFER, other);
+            ring = new UniformRingBuffer(1024, 64, true);
+            assertFalse(ring.isPersistent());
+            assertEquals(GL11.glGetInteger(GL31.GL_UNIFORM_BUFFER_BINDING), glsmUniformBufferBinding(), "constructor allocation");
+            GLStateManager.glBindBuffer(GL31.GL_UNIFORM_BUFFER, other);
+            ring.writeBlock(src);
+            assertEquals(GL11.glGetInteger(GL31.GL_UNIFORM_BUFFER_BINDING), glsmUniformBufferBinding(), "writeBlock");
+        } finally {
+            if (ring != null) ring.destroy();
+            GLStateManager.glDeleteBuffers(other);
+            memFree(src);
+        }
+    }
+
+    @Test
+    void persistentRingMarksItsOwnBufferAndLeavesTheCacheMatchingTheDriver() {
+        assumeTrue(RenderSystem.supportsBufferStorage(), "GL4.4+ required");
+        final int other = GLStateManager.glGenBuffers();
+        PersistentStreamingBuffer ring = null;
+        try {
+            GLStateManager.glBindBuffer(GL15.GL_ARRAY_BUFFER, other);
+            ring = PersistentStreamingBuffer.createOrNull(4096, false);
+            assertNotNull(ring);
+            final IntSet persistent = Reflect.getStatic(FfpExtendedAttribs.class, "persistentSources");
+            assertTrue(persistent.contains(ring.getBufferId()), "the ring buffer is the persistent source");
+            assertFalse(persistent.contains(other), "the previously bound buffer is not persistent");
+            assertEquals(GL11.glGetInteger(GL15.GL_ARRAY_BUFFER_BINDING), GLStateManager.getBoundVBO());
+        } finally {
+            if (ring != null) ring.destroy();
+            GLStateManager.glDeleteBuffers(other);
+        }
+    }
+}

glsm/src/testFixtures/java/com/gtnewhorizons/angelica/glsm/GLSMCoreExtension.java

@@ -39,7 +39,12 @@ public class GLSMCoreExtension implements BeforeAllCallback, BeforeEachCallback,
                 new ContextAttribs(3, 3).withProfileCore(true).withForwardCompatible(true));
 
             GLSMExtension.setMainThread(Thread.currentThread());
-            GLStateManager.initialize(GLSMInitConfig.builder().displaySize(800, 600).build());
+            GLStateManager.initialize(GLSMInitConfig.builder()
+                .displaySize(800, 600)
+                .directDrawer(t -> {})
+                .streamingDrawerDestroy(() -> {})
+                .enableDSA(false)
+                .build());
             GLStateManager.setRunningSplash(false);
             GLStateManager.markSplashComplete("test");
 

glsm/src/testFixtures/java/com/gtnewhorizons/angelica/glsm/GLSMExtension.java

@@ -69,6 +69,9 @@ public class GLSMExtension implements BeforeAllCallback, BeforeEachCallback, Aft
             displayMode = new DisplayMode(800, 600);
             final GLSMInitConfig config = GLSMInitConfig.builder()
                 .displaySize(displayMode.getWidth(), displayMode.getHeight())
+                .directDrawer(t -> {})
+                .streamingDrawerDestroy(() -> {})
+                .enableDSA(false)
                 .build();
             setMainThread(Thread.currentThread());
 

gradle/angelica-run-common.gradle.kts

@@ -0,0 +1,71 @@
+import com.gtnewhorizons.retrofuturagradle.MinecraftExtension
+import org.gradle.accessors.dm.LibrariesForLibs
+import xyz.wagyourtail.jvmdg.gradle.task.DowngradeJar
+import xyz.wagyourtail.jvmdg.gradle.task.files.DowngradeFiles
+
+val libs = the<LibrariesForLibs>()
+
+tasks.withType<DowngradeJar>().configureEach { logLevel.set("FATAL") }
+tasks.withType<DowngradeFiles>().configureEach { logLevel.set("FATAL") }
+
+configurations.all {
+    resolutionStrategy.dependencySubstitution {
+        substitute(module("com.github.GTNewHorizons:lwjgl3ify"))
+            .using(module("com.github.GTNewHorizons:lwjgl3ify:${libs.versions.lwjgl3ify.get()}"))
+    }
+}
+
+repositories {
+    maven {
+        name = "Maven Central Snapshots"
+        url = uri("https://central.sonatype.com/repository/maven-snapshots/")
+        content { includeGroup("org.lwjgl") }
+    }
+}
+
+val forwardedRunProperties = System.getProperties().stringPropertyNames().filter { it.startsWith("angelica.") || it.startsWith("quickPlay") }
+
+configure<MinecraftExtension> {
+    extraRunJvmArguments.set(extraRunJvmArguments.get().filterNot { arg -> forwardedRunProperties.any { arg.startsWith("-D$it=") } })
+}
+
+tasks.withType<JavaExec>().matching { it.name.startsWith("runClient") }.configureEach {
+    for (name in forwardedRunProperties) {
+        jvmArgs("-D$name=${System.getProperty(name)}")
+    }
+}
+
+val isMacOs = org.gradle.internal.os.OperatingSystem.current().isMacOsX
+val lwjglDebug = project.extra.has("lwjglDebug") && project.extra["lwjglDebug"] as Boolean
+
+tasks.withType<JavaExec>().configureEach {
+    if (name.startsWith("runClient") && name != "runClient" && isMacOs) {
+        jvmArgs("-XstartOnFirstThread")
+        if ("angelica.sdlgpu.encoderAssertions" !in forwardedRunProperties) jvmArgs("-Dangelica.sdlgpu.encoderAssertions=" + if (lwjglDebug) "fatal" else "warn")
+        if (lwjglDebug) {
+            environment("METAL_DEVICE_WRAPPER_TYPE", "1")
+            environment("METAL_DEBUG_ERROR_MODE", "0")
+            environment("MTL_SHADER_VALIDATION", "1")
+            environment("MTL_SHADER_VALIDATION_REPORT_TO_STDERR", "1")
+            environment("MTL_DEBUG_LAYER", "1")
+            environment("MallocScribble", "1")
+            environment("MallocPreScribble", "1")
+            environment("MallocGuardEdges", "1")
+            environment("MallocStackLogging", "1")
+            environment("MallocStackLoggingNoCompact", "1")
+        }
+    }
+}
+
+configure<MinecraftExtension> {
+    lwjgl3Bindings.addAll("shaderc", "spvc")
+    lwjgl3Version = libs.versions.lwjgl3.get()
+}
+
+tasks.named<Copy>("processResources") {
+    val projectVersion = project.version.toString()
+    inputs.property("version", projectVersion)
+    filesMatching("META-INF/rfb-plugin/*") {
+        expand("version" to projectVersion)
+    }
+}

gradle/angelica-shadow-common.gradle.kts

@@ -0,0 +1,28 @@
+import com.github.jengelman.gradle.plugins.shadow.tasks.ShadowJar
+
+val embedOnly: Configuration by configurations
+
+tasks.named<ShadowJar>("shadowJar") {
+    dependsOn(embedOnly)
+    from(embedOnly.map(::zipTree))
+
+    duplicatesStrategy = DuplicatesStrategy.INCLUDE
+    mergeServiceFiles()
+
+    minimize {
+        exclude(project(rootProject.path))
+        exclude(project(":glsm"))
+        exclude(project(":lwjgl3-backend"))
+        exclude(project(":sdl-gpu"))
+        exclude(dependency("org.taumc:.*:.*"))
+        exclude(dependency("org.embeddedt.celeritas:.*:.*"))
+        exclude(dependency("org.antlr:.*:.*"))
+    }
+
+    relocate("org.taumc.celeritas", "org.taumc.celeritas")
+    relocate("org.embeddedt", "org.embeddedt")
+    relocate("com.gtnewhorizons.angelica.config", "com.gtnewhorizons.angelica.config")
+    relocate("com.gtnewhorizons.angelica.glsm", "com.gtnewhorizons.angelica.glsm")
+    relocate("com.gtnewhorizons.angelica.lwjgl3", "com.gtnewhorizons.angelica.lwjgl3")
+    relocate("com.gtnewhorizons.angelica.sdlgpu", "com.gtnewhorizons.angelica.sdlgpu")
+}

gradle/libs.versions.toml

@@ -6,10 +6,10 @@ log4j = "2.0-beta9"
 asmCompile = "5.0.3"
 # End Frozen
 
-lwjgl3 = "3.4.2-20260602.093430-9"
+lwjgl3 = "3.4.2-SNAPSHOT"
 lwjgl3ify = "3.0.31"
 
-celeritas = "2.5.10-GTNH"
+celeritas = "2.5.11-GTNH"
 gtnhlib = "0.11.36"
 eventbus = "7.0-beta.15"
 glslTransformLib = "0.2.0-33.g3ec381e"
@@ -30,10 +30,10 @@ asmBuild = "9.7"
 mockito = "3.12.4"
 archunit = "1.4.1"
 ant = "1.8.2"
+distantHorizonsApi = "5.1.0"
 
 [libraries]
 celeritas-common = { module = "org.embeddedt.celeritas:celeritas-common", version.ref = "celeritas" }
-celeritas-lwjgl2-service = { module = "org.embeddedt.celeritas:celeritas-lwjgl2-service", version.ref = "celeritas" }
 eventbus = { module = "net.minecraftforge:eventbus", version.ref = "eventbus" }
 glsl-transformation-lib = { module = "org.taumc:glsl-transformation-lib", version.ref = "glslTransformLib" }
 antlr4-runtime = { module = "org.antlr:antlr4-runtime", version.ref = "antlr4Runtime" }
@@ -58,6 +58,7 @@ junit-platform-reporting = { module = "org.junit.platform:junit-platform-reporti
 mockito-core = { module = "org.mockito:mockito-core", version.ref = "mockito" }
 archunit-junit5 = { module = "com.tngtech.archunit:archunit-junit5", version.ref = "archunit" }
 ant = { module = "org.apache.ant:ant", version.ref = "ant" }
+distant-horizons-api = { module = "maven.modrinth:DistantHorizonsApi", version.ref = "distantHorizonsApi" }
 asm-tree-compile = { module = "org.ow2.asm:asm-tree", version.ref = "asmCompile" }
 asm-tree-test = { module = "org.ow2.asm:asm-tree", version.ref = "asmTest" }
 asm-build = { module = "org.ow2.asm:asm", version.ref = "asmBuild" }

lwjgl3-backend/build.gradle.kts

@@ -61,6 +61,7 @@ dependencies {
     api(project(":glsm"))
 
     compileOnly(libs.lwjgl3ify) { artifact { classifier = "dev" }; isTransitive = false }
+    compileOnly(libs.retrofuturabootstrap) { isTransitive = false }
     compileOnly(libs.celeritas.common) { isTransitive = false }
 
     // LWJGL3

lwjgl3-backend/src/main/java/com/gtnewhorizons/angelica/lwjgl3/Lwjgl3GLRenderBackend.java

@@ -4,9 +4,13 @@ import com.gtnewhorizons.angelica.glsm.GLStateManager;
 import com.gtnewhorizons.angelica.glsm.GLESCaps;
 import com.gtnewhorizons.angelica.glsm.RenderSystem;
 import com.gtnewhorizons.angelica.glsm.backend.DebugMessageHandler;
+import com.gtnewhorizons.angelica.glsm.backend.MainThreadPump;
+import com.gtnewhorizons.retrofuturabootstrap.MainStartOnFirstThread;
 import com.gtnewhorizons.angelica.glsm.backend.RenderBackend;
 import com.gtnewhorizons.angelica.glsm.backend.VSyncMode;
 import me.eigenraven.lwjgl3ify.api.Lwjgl3Aware;
+import me.eigenraven.lwjgl3ify.client.MainThreadExec;
+import org.lwjglx.Lwjgl3ifyEventLoop;
 import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
 import org.lwjgl.opengl.ARBClearTexture;
@@ -36,7 +40,9 @@ import org.lwjgl.opengl.GLDebugMessageCallback;
 import org.lwjgl.sdl.SDL_DisplayMode;
 import org.lwjgl.sdl.SDL_DropEvent;
 import org.lwjgl.sdl.SDL_EventFilter;
+import org.lwjgl.sdl.SDLError;
 import org.lwjgl.sdl.SDLEvents;
+import org.lwjgl.sdl.SDLTimer;
 import org.lwjgl.sdl.SDLVideo;
 import org.lwjgl.system.JNI;
 import org.lwjgl.system.MemoryStack;
@@ -71,6 +77,7 @@ public final class Lwjgl3GLRenderBackend extends RenderBackend {
     private SDL_EventFilter dropEventFilter;
     private final ConcurrentLinkedQueue<String> droppedFiles = new ConcurrentLinkedQueue<>();
     private volatile boolean watchingDrops;
+    private boolean swapIntervalHonored = true;
 
     @Override
     public void init() {
@@ -173,19 +180,50 @@ public final class Lwjgl3GLRenderBackend extends RenderBackend {
 
     @Override
     protected VSyncMode applyVSyncMode(VSyncMode preferred) {
-        final boolean enabled = preferred.tearFree();
-        SDLVideo.SDL_GL_SetSwapInterval(enabled ? 1 : 0);
-        return enabled ? VSyncMode.ON : VSyncMode.OFF;
+        final int want = preferred.tearFree() ? 1 : 0;
+        final boolean setOk = SDLVideo.SDL_GL_SetSwapInterval(want);
+        final String setError = setOk ? null : SDLError.SDL_GetError();
+        int got = want;
+        try (MemoryStack stack = MemoryStack.stackPush()) {
+            final IntBuffer readback = stack.callocInt(1);
+            if (SDLVideo.SDL_GL_GetSwapInterval(readback)) got = readback.get(0);
+        }
+        if (!setOk) {
+            LOGGER.warn("SDL_GL_SetSwapInterval({}) failed: {}", want, setError);
+        } else if (got != want && !(want == 1 && got == -1)) {
+            LOGGER.warn("Requested swap interval {} but the driver reports {}", want, got);
+        }
+        swapIntervalHonored = want == 0 || got != 0;
+        return want != 0 && swapIntervalHonored ? VSyncMode.ON : VSyncMode.OFF;
     }
 
     @Override
-    protected int queryDisplayRefreshRateHz() {
+    protected boolean applyHonored() {
+        return swapIntervalHonored;
+    }
+
+    @Override
+    protected long queryRefreshPeriodNanos() {
         final long window = Display.getWindow();
         final int displayId = window == 0 ? SDLVideo.SDL_GetPrimaryDisplay() : SDLVideo.SDL_GetDisplayForWindow(window);
-        if (displayId == 0) return 0;
+        if (displayId == 0) return 0L;
         final SDL_DisplayMode mode = SDLVideo.SDL_GetCurrentDisplayMode(displayId);
-        if (mode == null) return 0;
-        return refreshHzFrom(mode.refresh_rate_numerator(), mode.refresh_rate_denominator(), mode.refresh_rate());
+        if (mode == null) return 0L;
+        return periodFromRational(mode.refresh_rate_numerator(), mode.refresh_rate_denominator(), mode.refresh_rate());
+    }
+
+    @Override
+    public void parkNanos(long nanos) {
+        SDLTimer.SDL_DelayNS(nanos);
+    }
+
+    private static final class Pump {
+        static final MainThreadPump INSTANCE = new MainThreadPump(MainStartOnFirstThread.instance(), MainThreadExec::isMainThread, Lwjgl3ifyEventLoop::pumpEvents, MainThreadPump::pollInput);
+    }
+
+    @Override
+    public void pumpDisplayMessages() {
+        Pump.INSTANCE.pumpMessages();
     }
 
     @Override

scripts/flyby-bench.sh

@@ -0,0 +1,48 @@
+#!/usr/bin/env bash
+# Usage: scripts/flyby-bench.sh <name> ffp|pack [flyby-capture.sh args...]
+# Env: FLYBY_SCENE, TIME_OF_DAY, QUICKPLAY_WORLD, TRACY_CAPTURE, SDLGPU, RENDER_DISTANCE.
+# Forces particles:0 for the run and restores it after exit; the game rewrites options.txt on quit.
+# A worktree needs tracy-client/src/main/resources/natives copied in.
+
+set -euo pipefail
+
+NAME="${1:?usage: flyby-bench.sh <name> ffp|pack [extra gradle args...]}"
+MODE="${2:?usage: flyby-bench.sh <name> ffp|pack [extra gradle args...]}"
+shift 2
+
+OUT_DIR="tmp/bench"
+OPTIONS="run/client/options.txt"
+SHADERS="run/client/config/shaders.properties"
+mkdir -p "$OUT_DIR"
+
+PARTICLES_BEFORE="$(grep -E '^particles:' "$OPTIONS" | cut -d: -f2)"
+SHADERS_BEFORE="$(grep -E '^enableShaders=' "$SHADERS" | cut -d= -f2)"
+if [ -n "${RENDER_DISTANCE:-}" ]; then RENDER_DISTANCE_BEFORE="$(grep -E '^renderDistance:' "$OPTIONS" | cut -d: -f2)"; fi
+
+restore() {
+    sed -i '' "s/^particles:.*/particles:${PARTICLES_BEFORE}/" "$OPTIONS"
+    sed -i '' "s/^enableShaders=.*/enableShaders=${SHADERS_BEFORE}/" "$SHADERS"
+    if [ -n "${RENDER_DISTANCE:-}" ]; then
+        sed -i '' "s/^renderDistance:.*/renderDistance:${RENDER_DISTANCE_BEFORE}/" "$OPTIONS"
+    fi
+}
+trap restore EXIT
+
+sed -i '' 's/^particles:.*/particles:0/' "$OPTIONS"
+case "$MODE" in
+    ffp)  sed -i '' 's/^enableShaders=.*/enableShaders=false/' "$SHADERS" ;;
+    pack) sed -i '' 's/^enableShaders=.*/enableShaders=true/' "$SHADERS" ;;
+    *) echo "error: mode must be ffp or pack" >&2; exit 1 ;;
+esac
+if [ -n "${RENDER_DISTANCE:-}" ]; then
+    sed -i '' "s/^renderDistance:.*/renderDistance:${RENDER_DISTANCE}/" "$OPTIONS"
+fi
+
+export FLYBY_SCENE="${FLYBY_SCENE:-scripts/flyby-scenes/entities-x8.txt}"
+export QUICKPLAY_WORLD="${QUICKPLAY_WORLD:-Flat World - No Mods}"
+export TRACY_CAPTURE="${TRACY_CAPTURE:-$HOME/dev/mc/tracy/capture/build/tracy-capture}"
+export SDLGPU="${SDLGPU:-1}"
+
+echo "=== $NAME ($MODE) start $(date '+%H:%M:%S')"
+scripts/flyby-capture.sh "$OUT_DIR/$NAME.tracy" circuit 128 -Dangelica.flyby.timeOfDay="${TIME_OF_DAY:-6000}" "$@" >| "$OUT_DIR/$NAME.console.log" 2>&1
+echo "=== $NAME exit=$? $(date '+%H:%M:%S'), $(grep -c 'did not execute' "$OUT_DIR/$NAME.console.log" || true) failed scene lines"

scripts/flyby-capture.sh

@@ -5,25 +5,59 @@
 # * Game waits for the tracy connection, runs the route, returns to the original coordinates and exits.
 # * tracy-capture finalizes
 #
-# Usage: scripts/flyby-capture.sh <output.tracy> [route] [length]
+# Usage: scripts/flyby-capture.sh <output.tracy> [route] [length] [extra gradle args...]
 #   route  - straight | pan | circuit | static
 #   length - Units: blocks (straight), blocks per leg (circuit), degrees (pan), ticks (static).
+#   extra  - passed through to gradle; -Dangelica.* reaches the client (e.g. -Dangelica.flyby.timeOfDay=1500).
 #
-#   FLYBY_SPEED - blocks per tick. (0.5 ~= creative flight).
+#   FLYBY_SPEED     - blocks per tick. (0.5 ~= creative flight).
+#   FLYBY_PACING    - UNCAPPED | CONFIGURED. Passed through when set.
+#   QUICKPLAY_WORLD - save to auto-load (default: latest).
+#   FLYBY_SCENE     - server command file run at flyby start.
+#   SDLGPU=0|1      - force OpenGL (0) or SDL-GPU (1); unset uses the build default.
 #
 #   Requires tracy-capture on PATH (TRACY_CAPTURE=/path/to/tracy-capture).
-#   Launch the game to the main menu and load your benchmark save; the run starts once the world is up.
+#   QuickPlay loads QUICKPLAY_WORLD on launch; the run starts once the world is up.
 #
 #   Ensure the chunks in the route have been generated before capturing
 
 set -euo pipefail
 
-OUT="${1:?usage: flyby-capture.sh <output.tracy> [route] [length]}"
+OUT="${1:?usage: flyby-capture.sh <output.tracy> [route] [length] [extra gradle args...]}"
 ROUTE="${2:-straight}"
 LENGTH="${3:-0}"
+if [ $# -ge 3 ]; then
+    shift 3
+else
+    shift $#
+fi
 WARMUP="${FLYBY_WARMUP:-400}"
 TRACY_CAPTURE="${TRACY_CAPTURE:-tracy-capture}"
 
+BACKEND_ARGS=()
+if [ "${SDLGPU:-}" = "1" ]; then
+    BACKEND_ARGS+=(-Dangelica.sdlgpu.enable=true)
+elif [ "${SDLGPU:-}" = "0" ]; then
+    BACKEND_ARGS+=(-Dangelica.sdlgpu.enable=false)
+fi
+if [ -n "${FLYBY_PACING:-}" ]; then
+    BACKEND_ARGS+=(-Dangelica.flyby.pacing="$FLYBY_PACING")
+fi
+
+SCENE_ABS=""
+SCENE_ARGS=()
+if [ -n "${FLYBY_SCENE:-}" ]; then
+    case "$FLYBY_SCENE" in
+        /*) SCENE_ABS="$FLYBY_SCENE" ;;
+        *) SCENE_ABS="$PWD/$FLYBY_SCENE" ;;
+    esac
+    if [ ! -f "$SCENE_ABS" ]; then
+        echo "error: FLYBY_SCENE file not found: $SCENE_ABS" >&2
+        exit 1
+    fi
+    SCENE_ARGS+=(-Dangelica.flyby.commands="$SCENE_ABS")
+fi
+
 if ! command -v "$TRACY_CAPTURE" >/dev/null 2>&1 && [ ! -x "$TRACY_CAPTURE" ]; then
     cat >&2 <<'EOF'
 error: tracy-capture not found.
@@ -55,8 +89,7 @@ cleanup() {
 }
 trap cleanup EXIT
 
-echo "==> launching game (route=$ROUTE warmup=$WARMUP length=${LENGTH:-default})"
-echo "    load your benchmark save once the main menu appears"
+echo "==> launching game (route=$ROUTE warmup=$WARMUP length=${LENGTH:-default} scene=${SCENE_ABS:-none})"
 
 ./gradlew runClient25 --console=plain \
     -Dangelica.flyby.route="$ROUTE" \
@@ -64,7 +97,11 @@ echo "    load your benchmark save once the main menu appears"
     -Dangelica.flyby.speed="${FLYBY_SPEED:-0}" \
     -Dangelica.flyby.warmupTicks="$WARMUP" \
     -Dangelica.flyby.waitForTracy=true \
-    -Dangelica.flyby.exitWhenDone=true
+    -Dangelica.flyby.exitWhenDone=true \
+    -DquickPlaySingleplayer="${QUICKPLAY_WORLD:-latest}" \
+    ${BACKEND_ARGS[@]+"${BACKEND_ARGS[@]}"} \
+    ${SCENE_ARGS[@]+"${SCENE_ARGS[@]}"} \
+    "$@"
 
 echo "==> game exited, finalising capture"
 cleanup

scripts/flyby-compare.py

@@ -0,0 +1,156 @@
+#!/usr/bin/env python3
+import csv
+import io
+import os
+import subprocess
+import sys
+
+CSVEXPORT = os.environ.get("TRACY_CSVEXPORT", os.path.expanduser("~/dev/mc/tracy/csvexport/build/tracy-csvexport"))
+
+PLOTS = [
+    "gl.drawCalls", "gl.listPlaybacks", "gl.streamDraws", "entitiesRendered", "blockEntitiesRendered", "tesr.modelParts", "tesr.retainedDraws", "tesr.cacheMisses", "tesr.instancedDraws", "tesr.instancedInstances",
+    "tesr.streamedInstances", "tesr.liveFallbacks", "tesr.bail.hurtFlash", "tesr.bail.foreignProgram",
+    "tesr.bail.material", "tesr.bail.texture", "sdl.renderPasses", "sdl.submits", "sdl.gpuWaitUs",
+    "sdl.acquireWaitUs",
+]
+ZONES = ["entityModelParts", "tesrBatch", "tesrInstanced", "tesrOpaque"]
+CLOCK = "gl.drawCalls"
+
+
+def run(args):
+    out = subprocess.run([CSVEXPORT] + args, capture_output=True, text=True)
+    if out.returncode != 0:
+        sys.exit(out.stderr.strip() or f"csvexport failed: {' '.join(args)}")
+    return list(csv.DictReader(io.StringIO(out.stdout)))
+
+
+def windows(path):
+    marks = []
+    for row in run(["-m", path]):
+        name = row["MessageName"]
+        if name.startswith("flyby leg ") or name.startswith("flyby turn ") or name.startswith("flyby end"):
+            marks.append((int(row["total_ns"]), name))
+    marks.sort()
+    result = {}
+    for i, (t, name) in enumerate(marks):
+        if not name.startswith("flyby leg "):
+            continue
+        leg = int(name.split()[-1])
+        if leg in result:
+            continue
+        end = marks[i + 1][0] if i + 1 < len(marks) else None
+        result[leg] = (t, end)
+    return result
+
+
+def inside(t, window):
+    start, end = window
+    return t >= start and (end is None or t < end)
+
+
+def stats(values):
+    if not values:
+        return None
+    s = sorted(values)
+    n = len(s)
+    return (sum(s) / n, s[n // 2], s[min(n - 1, int(n * 0.99))], s[-1], n)
+
+
+def analyze(path):
+    legs = windows(path)
+    plots = {name: {leg: [] for leg in legs} for name in PLOTS + ["Frame"]}
+    last_clock = None
+    for row in run(["-u", "-p", "-f", "zzz-no-such-zone", path]):
+        name = row["name"]
+        if name not in plots:
+            continue
+        t = int(row["ns_since_start"])
+        if name == CLOCK:
+            if last_clock is not None:
+                for leg, window in legs.items():
+                    if inside(t, window):
+                        plots["Frame"][leg].append((t - last_clock) / 1e6)
+                        break
+            last_clock = t
+        for leg, window in legs.items():
+            if inside(t, window):
+                plots[name][leg].append(float(row["value"]))
+                break
+    zones = {name: {leg: [] for leg in legs} for name in ZONES}
+    for name in ZONES:
+        for row in run(["-u", "-c", "-f", name, path]):
+            if row["name"] != name:
+                continue
+            t = int(row["ns_since_start"])
+            for leg, window in legs.items():
+                if inside(t, window):
+                    zones[name][leg].append(int(row["exec_time_ns"]))
+                    break
+    return legs, plots, zones
+
+
+def fmt(v, digits=1):
+    if v is None:
+        return "-"
+    if isinstance(v, float):
+        return f"{v:.{digits}f}"
+    return str(v)
+
+
+def main(paths):
+    labels = [os.path.splitext(os.path.basename(p))[0] for p in paths]
+    data = [analyze(p) for p in paths]
+    all_legs = sorted({leg for legs, _, _ in data for leg in legs})
+    width = max(12, max(len(l) for l in labels) + 2)
+    for leg in all_legs:
+        print(f"\n== leg {leg}")
+        print("metric".ljust(28) + "".join(l.rjust(width) for l in labels))
+
+        def line(metric, cells):
+            print(metric.ljust(28) + "".join(fmt(c).rjust(width) for c in cells))
+
+        frame = [stats(plots["Frame"].get(leg, [])) for _, plots, _ in data]
+        line("frames", [f[4] if f else None for f in frame])
+        line("frame avg ms", [f[0] if f else None for f in frame])
+        line("frame p50 ms", [f[1] if f else None for f in frame])
+        line("frame p99 ms", [f[2] if f else None for f in frame])
+        line("frame max ms", [f[3] if f else None for f in frame])
+        busy = []
+        for (_, plots, _), f in zip(data, frame):
+            acquire = plots["sdl.acquireWaitUs"].get(leg, [])
+            gpu = plots["sdl.gpuWaitUs"].get(leg, [])
+            if f and acquire:
+                busy.append(f[0] - sum(acquire) / len(acquire) / 1000.0 - (sum(gpu) / len(gpu) / 1000.0 if gpu else 0.0))
+            else:
+                busy.append(None)
+        line("busy avg ms", busy)
+        for name in PLOTS:
+            per = []
+            for _, plots, _ in data:
+                v = plots[name].get(leg, [])
+                per.append(sum(v) / len(v) if v else None)
+            if all(c is None for c in per):
+                continue
+            line(name + " /frame", per)
+        for name in ZONES:
+            per = []
+            for legs, _, zones in data:
+                v = zones[name].get(leg, [])
+                frames = len(plots_frames(data, legs, leg))
+                per.append((sum(v) / 1000.0 / frames) if v and frames else None)
+            if all(c is None for c in per):
+                continue
+            line(name + " us/frame", per)
+
+
+def plots_frames(data, legs, leg):
+    for l, plots, _ in data:
+        if l is legs:
+            return plots["Frame"].get(leg, [])
+    return []
+
+
+if __name__ == "__main__":
+    if len(sys.argv) < 2:
+        sys.exit("usage: flyby-compare.py <capture.tracy> [more captures...]")
+    main(sys.argv[1:])

scripts/flyby-scenes/entities-x8.txt

@@ -0,0 +1,881 @@
+# entities.txt at 8x density. Summons are relative to the player; start facing south (yaw 0).
+
+# gamerules
+difficulty 1
+gamerule doMobSpawning false
+gamerule doFireTick false
+gamerule mobGriefing false
+
+# hurt-flash + glint zombies, x=-5 leg
+summon Zombie ~-17 ~ ~10 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:19b,Amplifier:0b,Duration:1000000},{Id:10b,Amplifier:1b,Duration:1000000}],Equipment:[{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},{id:313s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:312s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:311s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:310s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon Zombie ~-14 ~ ~10 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:19b,Amplifier:0b,Duration:1000000},{Id:10b,Amplifier:1b,Duration:1000000}],Equipment:[{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},{id:313s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:312s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:311s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:310s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon Zombie ~-11 ~ ~10 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:19b,Amplifier:0b,Duration:1000000},{Id:10b,Amplifier:1b,Duration:1000000}],Equipment:[{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},{id:313s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:312s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:311s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:310s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon Zombie ~-8 ~ ~10 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:19b,Amplifier:0b,Duration:1000000},{Id:10b,Amplifier:1b,Duration:1000000}],Equipment:[{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},{id:313s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:312s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:311s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:310s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon Zombie ~-5 ~ ~10 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:19b,Amplifier:0b,Duration:1000000},{Id:10b,Amplifier:1b,Duration:1000000}],Equipment:[{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},{id:313s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:312s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:311s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:310s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon Zombie ~-2 ~ ~10 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:19b,Amplifier:0b,Duration:1000000},{Id:10b,Amplifier:1b,Duration:1000000}],Equipment:[{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},{id:313s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:312s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:311s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:310s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon Zombie ~1 ~ ~10 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:19b,Amplifier:0b,Duration:1000000},{Id:10b,Amplifier:1b,Duration:1000000}],Equipment:[{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},{id:313s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:312s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:311s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:310s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon Zombie ~4 ~ ~10 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:19b,Amplifier:0b,Duration:1000000},{Id:10b,Amplifier:1b,Duration:1000000}],Equipment:[{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},{id:313s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:312s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:311s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:310s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon Zombie ~-17 ~ ~14 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:19b,Amplifier:0b,Duration:1000000},{Id:10b,Amplifier:1b,Duration:1000000}],Equipment:[{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},{id:313s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:312s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:311s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:310s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon Zombie ~-14 ~ ~14 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:19b,Amplifier:0b,Duration:1000000},{Id:10b,Amplifier:1b,Duration:1000000}],Equipment:[{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},{id:313s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:312s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:311s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:310s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon Zombie ~-11 ~ ~14 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:19b,Amplifier:0b,Duration:1000000},{Id:10b,Amplifier:1b,Duration:1000000}],Equipment:[{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},{id:313s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:312s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:311s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:310s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon Zombie ~-8 ~ ~14 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:19b,Amplifier:0b,Duration:1000000},{Id:10b,Amplifier:1b,Duration:1000000}],Equipment:[{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},{id:313s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:312s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:311s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:310s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon Zombie ~-5 ~ ~14 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:19b,Amplifier:0b,Duration:1000000},{Id:10b,Amplifier:1b,Duration:1000000}],Equipment:[{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},{id:313s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:312s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:311s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:310s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon Zombie ~-2 ~ ~14 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:19b,Amplifier:0b,Duration:1000000},{Id:10b,Amplifier:1b,Duration:1000000}],Equipment:[{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},{id:313s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:312s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:311s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:310s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon Zombie ~1 ~ ~14 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:19b,Amplifier:0b,Duration:1000000},{Id:10b,Amplifier:1b,Duration:1000000}],Equipment:[{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},{id:313s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:312s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:311s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:310s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon Zombie ~4 ~ ~14 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:19b,Amplifier:0b,Duration:1000000},{Id:10b,Amplifier:1b,Duration:1000000}],Equipment:[{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},{id:313s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:312s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:311s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:310s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon Zombie ~-17 ~ ~18 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:19b,Amplifier:0b,Duration:1000000},{Id:10b,Amplifier:1b,Duration:1000000}],Equipment:[{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},{id:313s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:312s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:311s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:310s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon Zombie ~-14 ~ ~18 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:19b,Amplifier:0b,Duration:1000000},{Id:10b,Amplifier:1b,Duration:1000000}],Equipment:[{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},{id:313s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:312s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:311s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:310s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon Zombie ~-11 ~ ~18 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:19b,Amplifier:0b,Duration:1000000},{Id:10b,Amplifier:1b,Duration:1000000}],Equipment:[{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},{id:313s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:312s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:311s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:310s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon Zombie ~-8 ~ ~18 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:19b,Amplifier:0b,Duration:1000000},{Id:10b,Amplifier:1b,Duration:1000000}],Equipment:[{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},{id:313s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:312s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:311s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:310s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon Zombie ~-5 ~ ~18 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:19b,Amplifier:0b,Duration:1000000},{Id:10b,Amplifier:1b,Duration:1000000}],Equipment:[{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},{id:313s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:312s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:311s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:310s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon Zombie ~-2 ~ ~18 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:19b,Amplifier:0b,Duration:1000000},{Id:10b,Amplifier:1b,Duration:1000000}],Equipment:[{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},{id:313s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:312s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:311s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:310s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon Zombie ~1 ~ ~18 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:19b,Amplifier:0b,Duration:1000000},{Id:10b,Amplifier:1b,Duration:1000000}],Equipment:[{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},{id:313s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:312s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:311s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:310s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon Zombie ~4 ~ ~18 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:19b,Amplifier:0b,Duration:1000000},{Id:10b,Amplifier:1b,Duration:1000000}],Equipment:[{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},{id:313s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:312s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:311s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:310s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon Zombie ~-17 ~ ~22 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:19b,Amplifier:0b,Duration:1000000},{Id:10b,Amplifier:1b,Duration:1000000}],Equipment:[{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},{id:313s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:312s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:311s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:310s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon Zombie ~-14 ~ ~22 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:19b,Amplifier:0b,Duration:1000000},{Id:10b,Amplifier:1b,Duration:1000000}],Equipment:[{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},{id:313s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:312s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:311s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:310s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon Zombie ~-11 ~ ~22 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:19b,Amplifier:0b,Duration:1000000},{Id:10b,Amplifier:1b,Duration:1000000}],Equipment:[{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},{id:313s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:312s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:311s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:310s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon Zombie ~-8 ~ ~22 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:19b,Amplifier:0b,Duration:1000000},{Id:10b,Amplifier:1b,Duration:1000000}],Equipment:[{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},{id:313s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:312s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:311s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:310s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon Zombie ~-5 ~ ~22 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:19b,Amplifier:0b,Duration:1000000},{Id:10b,Amplifier:1b,Duration:1000000}],Equipment:[{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},{id:313s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:312s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:311s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:310s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon Zombie ~-2 ~ ~22 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:19b,Amplifier:0b,Duration:1000000},{Id:10b,Amplifier:1b,Duration:1000000}],Equipment:[{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},{id:313s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:312s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:311s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:310s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon Zombie ~1 ~ ~22 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:19b,Amplifier:0b,Duration:1000000},{Id:10b,Amplifier:1b,Duration:1000000}],Equipment:[{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},{id:313s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:312s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:311s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:310s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon Zombie ~4 ~ ~22 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:19b,Amplifier:0b,Duration:1000000},{Id:10b,Amplifier:1b,Duration:1000000}],Equipment:[{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},{id:313s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:312s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:311s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:310s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon Zombie ~-17 ~ ~26 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:19b,Amplifier:0b,Duration:1000000},{Id:10b,Amplifier:1b,Duration:1000000}],Equipment:[{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},{id:313s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:312s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:311s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:310s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon Zombie ~-14 ~ ~26 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:19b,Amplifier:0b,Duration:1000000},{Id:10b,Amplifier:1b,Duration:1000000}],Equipment:[{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},{id:313s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:312s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:311s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:310s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon Zombie ~-11 ~ ~26 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:19b,Amplifier:0b,Duration:1000000},{Id:10b,Amplifier:1b,Duration:1000000}],Equipment:[{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},{id:313s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:312s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:311s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:310s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon Zombie ~-8 ~ ~26 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:19b,Amplifier:0b,Duration:1000000},{Id:10b,Amplifier:1b,Duration:1000000}],Equipment:[{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},{id:313s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:312s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:311s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:310s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon Zombie ~-5 ~ ~26 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:19b,Amplifier:0b,Duration:1000000},{Id:10b,Amplifier:1b,Duration:1000000}],Equipment:[{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},{id:313s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:312s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:311s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:310s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon Zombie ~-2 ~ ~26 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:19b,Amplifier:0b,Duration:1000000},{Id:10b,Amplifier:1b,Duration:1000000}],Equipment:[{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},{id:313s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:312s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:311s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:310s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon Zombie ~1 ~ ~26 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:19b,Amplifier:0b,Duration:1000000},{Id:10b,Amplifier:1b,Duration:1000000}],Equipment:[{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},{id:313s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:312s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:311s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:310s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon Zombie ~4 ~ ~26 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:19b,Amplifier:0b,Duration:1000000},{Id:10b,Amplifier:1b,Duration:1000000}],Equipment:[{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},{id:313s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:312s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:311s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:310s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon Zombie ~-17 ~ ~30 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:19b,Amplifier:0b,Duration:1000000},{Id:10b,Amplifier:1b,Duration:1000000}],Equipment:[{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},{id:313s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:312s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:311s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:310s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon Zombie ~-14 ~ ~30 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:19b,Amplifier:0b,Duration:1000000},{Id:10b,Amplifier:1b,Duration:1000000}],Equipment:[{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},{id:313s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:312s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:311s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:310s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon Zombie ~-11 ~ ~30 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:19b,Amplifier:0b,Duration:1000000},{Id:10b,Amplifier:1b,Duration:1000000}],Equipment:[{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},{id:313s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:312s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:311s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:310s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon Zombie ~-8 ~ ~30 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:19b,Amplifier:0b,Duration:1000000},{Id:10b,Amplifier:1b,Duration:1000000}],Equipment:[{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},{id:313s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:312s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:311s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:310s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon Zombie ~-5 ~ ~30 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:19b,Amplifier:0b,Duration:1000000},{Id:10b,Amplifier:1b,Duration:1000000}],Equipment:[{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},{id:313s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:312s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:311s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:310s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon Zombie ~-2 ~ ~30 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:19b,Amplifier:0b,Duration:1000000},{Id:10b,Amplifier:1b,Duration:1000000}],Equipment:[{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},{id:313s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:312s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:311s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:310s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon Zombie ~1 ~ ~30 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:19b,Amplifier:0b,Duration:1000000},{Id:10b,Amplifier:1b,Duration:1000000}],Equipment:[{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},{id:313s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:312s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:311s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:310s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon Zombie ~4 ~ ~30 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:19b,Amplifier:0b,Duration:1000000},{Id:10b,Amplifier:1b,Duration:1000000}],Equipment:[{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},{id:313s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:312s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:311s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:310s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon Zombie ~-17 ~ ~34 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:19b,Amplifier:0b,Duration:1000000},{Id:10b,Amplifier:1b,Duration:1000000}],Equipment:[{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},{id:313s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:312s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:311s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:310s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon Zombie ~-14 ~ ~34 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:19b,Amplifier:0b,Duration:1000000},{Id:10b,Amplifier:1b,Duration:1000000}],Equipment:[{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},{id:313s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:312s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:311s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:310s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon Zombie ~-11 ~ ~34 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:19b,Amplifier:0b,Duration:1000000},{Id:10b,Amplifier:1b,Duration:1000000}],Equipment:[{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},{id:313s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:312s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:311s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:310s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon Zombie ~-8 ~ ~34 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:19b,Amplifier:0b,Duration:1000000},{Id:10b,Amplifier:1b,Duration:1000000}],Equipment:[{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},{id:313s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:312s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:311s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:310s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon Zombie ~-5 ~ ~34 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:19b,Amplifier:0b,Duration:1000000},{Id:10b,Amplifier:1b,Duration:1000000}],Equipment:[{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},{id:313s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:312s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:311s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:310s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon Zombie ~-2 ~ ~34 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:19b,Amplifier:0b,Duration:1000000},{Id:10b,Amplifier:1b,Duration:1000000}],Equipment:[{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},{id:313s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:312s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:311s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:310s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon Zombie ~1 ~ ~34 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:19b,Amplifier:0b,Duration:1000000},{Id:10b,Amplifier:1b,Duration:1000000}],Equipment:[{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},{id:313s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:312s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:311s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:310s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon Zombie ~4 ~ ~34 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:19b,Amplifier:0b,Duration:1000000},{Id:10b,Amplifier:1b,Duration:1000000}],Equipment:[{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},{id:313s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:312s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:311s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:310s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon Zombie ~-17 ~ ~38 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:19b,Amplifier:0b,Duration:1000000},{Id:10b,Amplifier:1b,Duration:1000000}],Equipment:[{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},{id:313s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:312s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:311s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:310s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon Zombie ~-14 ~ ~38 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:19b,Amplifier:0b,Duration:1000000},{Id:10b,Amplifier:1b,Duration:1000000}],Equipment:[{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},{id:313s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:312s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:311s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:310s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon Zombie ~-11 ~ ~38 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:19b,Amplifier:0b,Duration:1000000},{Id:10b,Amplifier:1b,Duration:1000000}],Equipment:[{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},{id:313s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:312s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:311s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:310s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon Zombie ~-8 ~ ~38 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:19b,Amplifier:0b,Duration:1000000},{Id:10b,Amplifier:1b,Duration:1000000}],Equipment:[{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},{id:313s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:312s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:311s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:310s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon Zombie ~-5 ~ ~38 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:19b,Amplifier:0b,Duration:1000000},{Id:10b,Amplifier:1b,Duration:1000000}],Equipment:[{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},{id:313s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:312s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:311s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:310s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon Zombie ~-2 ~ ~38 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:19b,Amplifier:0b,Duration:1000000},{Id:10b,Amplifier:1b,Duration:1000000}],Equipment:[{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},{id:313s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:312s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:311s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:310s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon Zombie ~1 ~ ~38 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:19b,Amplifier:0b,Duration:1000000},{Id:10b,Amplifier:1b,Duration:1000000}],Equipment:[{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},{id:313s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:312s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:311s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:310s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon Zombie ~4 ~ ~38 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:19b,Amplifier:0b,Duration:1000000},{Id:10b,Amplifier:1b,Duration:1000000}],Equipment:[{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},{id:313s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:312s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:311s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:310s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+
+# pigzombies, x=6 leg
+summon PigZombie ~-6 ~ ~10 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],Equipment:[{id:283s,Count:1b},{id:317s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:316s,Count:1b},{id:315s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:314s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon PigZombie ~-3 ~ ~10 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],Equipment:[{id:283s,Count:1b},{id:317s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:316s,Count:1b},{id:315s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:314s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon PigZombie ~ ~ ~10 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],Equipment:[{id:283s,Count:1b},{id:317s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:316s,Count:1b},{id:315s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:314s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon PigZombie ~3 ~ ~10 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],Equipment:[{id:283s,Count:1b},{id:317s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:316s,Count:1b},{id:315s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:314s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon PigZombie ~6 ~ ~10 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],Equipment:[{id:283s,Count:1b},{id:317s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:316s,Count:1b},{id:315s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:314s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon PigZombie ~9 ~ ~10 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],Equipment:[{id:283s,Count:1b},{id:317s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:316s,Count:1b},{id:315s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:314s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon PigZombie ~12 ~ ~10 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],Equipment:[{id:283s,Count:1b},{id:317s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:316s,Count:1b},{id:315s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:314s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon PigZombie ~15 ~ ~10 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],Equipment:[{id:283s,Count:1b},{id:317s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:316s,Count:1b},{id:315s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:314s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon PigZombie ~-6 ~ ~14 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],Equipment:[{id:283s,Count:1b},{id:317s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:316s,Count:1b},{id:315s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:314s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon PigZombie ~-3 ~ ~14 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],Equipment:[{id:283s,Count:1b},{id:317s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:316s,Count:1b},{id:315s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:314s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon PigZombie ~ ~ ~14 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],Equipment:[{id:283s,Count:1b},{id:317s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:316s,Count:1b},{id:315s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:314s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon PigZombie ~3 ~ ~14 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],Equipment:[{id:283s,Count:1b},{id:317s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:316s,Count:1b},{id:315s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:314s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon PigZombie ~6 ~ ~14 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],Equipment:[{id:283s,Count:1b},{id:317s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:316s,Count:1b},{id:315s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:314s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon PigZombie ~9 ~ ~14 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],Equipment:[{id:283s,Count:1b},{id:317s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:316s,Count:1b},{id:315s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:314s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon PigZombie ~12 ~ ~14 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],Equipment:[{id:283s,Count:1b},{id:317s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:316s,Count:1b},{id:315s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:314s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon PigZombie ~15 ~ ~14 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],Equipment:[{id:283s,Count:1b},{id:317s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:316s,Count:1b},{id:315s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:314s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon PigZombie ~-6 ~ ~18 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],Equipment:[{id:283s,Count:1b},{id:317s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:316s,Count:1b},{id:315s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:314s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon PigZombie ~-3 ~ ~18 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],Equipment:[{id:283s,Count:1b},{id:317s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:316s,Count:1b},{id:315s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:314s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon PigZombie ~ ~ ~18 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],Equipment:[{id:283s,Count:1b},{id:317s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:316s,Count:1b},{id:315s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:314s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon PigZombie ~3 ~ ~18 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],Equipment:[{id:283s,Count:1b},{id:317s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:316s,Count:1b},{id:315s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:314s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon PigZombie ~6 ~ ~18 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],Equipment:[{id:283s,Count:1b},{id:317s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:316s,Count:1b},{id:315s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:314s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon PigZombie ~9 ~ ~18 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],Equipment:[{id:283s,Count:1b},{id:317s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:316s,Count:1b},{id:315s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:314s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon PigZombie ~12 ~ ~18 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],Equipment:[{id:283s,Count:1b},{id:317s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:316s,Count:1b},{id:315s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:314s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon PigZombie ~15 ~ ~18 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],Equipment:[{id:283s,Count:1b},{id:317s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:316s,Count:1b},{id:315s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:314s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon PigZombie ~-6 ~ ~22 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],Equipment:[{id:283s,Count:1b},{id:317s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:316s,Count:1b},{id:315s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:314s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon PigZombie ~-3 ~ ~22 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],Equipment:[{id:283s,Count:1b},{id:317s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:316s,Count:1b},{id:315s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:314s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon PigZombie ~ ~ ~22 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],Equipment:[{id:283s,Count:1b},{id:317s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:316s,Count:1b},{id:315s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:314s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon PigZombie ~3 ~ ~22 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],Equipment:[{id:283s,Count:1b},{id:317s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:316s,Count:1b},{id:315s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:314s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon PigZombie ~6 ~ ~22 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],Equipment:[{id:283s,Count:1b},{id:317s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:316s,Count:1b},{id:315s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:314s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon PigZombie ~9 ~ ~22 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],Equipment:[{id:283s,Count:1b},{id:317s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:316s,Count:1b},{id:315s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:314s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon PigZombie ~12 ~ ~22 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],Equipment:[{id:283s,Count:1b},{id:317s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:316s,Count:1b},{id:315s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:314s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon PigZombie ~15 ~ ~22 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],Equipment:[{id:283s,Count:1b},{id:317s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:316s,Count:1b},{id:315s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:314s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon PigZombie ~-6 ~ ~26 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],Equipment:[{id:283s,Count:1b},{id:317s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:316s,Count:1b},{id:315s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:314s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon PigZombie ~-3 ~ ~26 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],Equipment:[{id:283s,Count:1b},{id:317s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:316s,Count:1b},{id:315s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:314s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon PigZombie ~ ~ ~26 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],Equipment:[{id:283s,Count:1b},{id:317s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:316s,Count:1b},{id:315s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:314s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon PigZombie ~3 ~ ~26 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],Equipment:[{id:283s,Count:1b},{id:317s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:316s,Count:1b},{id:315s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:314s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon PigZombie ~6 ~ ~26 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],Equipment:[{id:283s,Count:1b},{id:317s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:316s,Count:1b},{id:315s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:314s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon PigZombie ~9 ~ ~26 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],Equipment:[{id:283s,Count:1b},{id:317s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:316s,Count:1b},{id:315s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:314s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon PigZombie ~12 ~ ~26 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],Equipment:[{id:283s,Count:1b},{id:317s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:316s,Count:1b},{id:315s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:314s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon PigZombie ~15 ~ ~26 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],Equipment:[{id:283s,Count:1b},{id:317s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:316s,Count:1b},{id:315s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:314s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon PigZombie ~-6 ~ ~30 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],Equipment:[{id:283s,Count:1b},{id:317s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:316s,Count:1b},{id:315s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:314s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon PigZombie ~-3 ~ ~30 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],Equipment:[{id:283s,Count:1b},{id:317s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:316s,Count:1b},{id:315s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:314s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon PigZombie ~ ~ ~30 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],Equipment:[{id:283s,Count:1b},{id:317s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:316s,Count:1b},{id:315s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:314s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon PigZombie ~3 ~ ~30 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],Equipment:[{id:283s,Count:1b},{id:317s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:316s,Count:1b},{id:315s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:314s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon PigZombie ~6 ~ ~30 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],Equipment:[{id:283s,Count:1b},{id:317s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:316s,Count:1b},{id:315s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:314s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon PigZombie ~9 ~ ~30 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],Equipment:[{id:283s,Count:1b},{id:317s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:316s,Count:1b},{id:315s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:314s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon PigZombie ~12 ~ ~30 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],Equipment:[{id:283s,Count:1b},{id:317s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:316s,Count:1b},{id:315s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:314s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon PigZombie ~15 ~ ~30 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],Equipment:[{id:283s,Count:1b},{id:317s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:316s,Count:1b},{id:315s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:314s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon PigZombie ~-6 ~ ~34 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],Equipment:[{id:283s,Count:1b},{id:317s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:316s,Count:1b},{id:315s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:314s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon PigZombie ~-3 ~ ~34 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],Equipment:[{id:283s,Count:1b},{id:317s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:316s,Count:1b},{id:315s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:314s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon PigZombie ~ ~ ~34 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],Equipment:[{id:283s,Count:1b},{id:317s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:316s,Count:1b},{id:315s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:314s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon PigZombie ~3 ~ ~34 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],Equipment:[{id:283s,Count:1b},{id:317s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:316s,Count:1b},{id:315s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:314s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon PigZombie ~6 ~ ~34 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],Equipment:[{id:283s,Count:1b},{id:317s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:316s,Count:1b},{id:315s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:314s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon PigZombie ~9 ~ ~34 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],Equipment:[{id:283s,Count:1b},{id:317s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:316s,Count:1b},{id:315s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:314s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon PigZombie ~12 ~ ~34 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],Equipment:[{id:283s,Count:1b},{id:317s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:316s,Count:1b},{id:315s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:314s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon PigZombie ~15 ~ ~34 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],Equipment:[{id:283s,Count:1b},{id:317s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:316s,Count:1b},{id:315s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:314s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon PigZombie ~-6 ~ ~38 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],Equipment:[{id:283s,Count:1b},{id:317s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:316s,Count:1b},{id:315s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:314s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon PigZombie ~-3 ~ ~38 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],Equipment:[{id:283s,Count:1b},{id:317s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:316s,Count:1b},{id:315s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:314s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon PigZombie ~ ~ ~38 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],Equipment:[{id:283s,Count:1b},{id:317s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:316s,Count:1b},{id:315s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:314s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon PigZombie ~3 ~ ~38 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],Equipment:[{id:283s,Count:1b},{id:317s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:316s,Count:1b},{id:315s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:314s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon PigZombie ~6 ~ ~38 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],Equipment:[{id:283s,Count:1b},{id:317s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:316s,Count:1b},{id:315s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:314s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon PigZombie ~9 ~ ~38 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],Equipment:[{id:283s,Count:1b},{id:317s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:316s,Count:1b},{id:315s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:314s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon PigZombie ~12 ~ ~38 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],Equipment:[{id:283s,Count:1b},{id:317s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:316s,Count:1b},{id:315s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:314s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon PigZombie ~15 ~ ~38 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],Equipment:[{id:283s,Count:1b},{id:317s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:316s,Count:1b},{id:315s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:314s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+
+# passive mobs, grouped by species
+summon Cow ~-17 ~ ~44 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Cow ~-14 ~ ~44 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Cow ~-11 ~ ~44 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Cow ~-8 ~ ~44 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Cow ~-5 ~ ~44 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Cow ~-2 ~ ~44 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Cow ~1 ~ ~44 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Cow ~4 ~ ~44 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Cow ~-17 ~ ~48 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Cow ~-14 ~ ~48 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Cow ~-11 ~ ~48 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Cow ~-8 ~ ~48 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Cow ~-5 ~ ~48 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Cow ~-2 ~ ~48 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Cow ~1 ~ ~48 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Cow ~4 ~ ~48 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Cow ~-17 ~ ~52 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Cow ~-14 ~ ~52 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Cow ~-11 ~ ~52 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Cow ~-8 ~ ~52 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Cow ~-5 ~ ~52 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Cow ~-2 ~ ~52 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Cow ~1 ~ ~52 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Cow ~4 ~ ~52 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Cow ~-17 ~ ~56 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Cow ~-14 ~ ~56 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Cow ~-11 ~ ~56 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Cow ~-8 ~ ~56 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Cow ~-5 ~ ~56 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Cow ~-2 ~ ~56 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Cow ~1 ~ ~56 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Cow ~4 ~ ~56 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Cow ~-17 ~ ~60 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Cow ~-14 ~ ~60 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Cow ~-11 ~ ~60 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Cow ~-8 ~ ~60 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Cow ~-5 ~ ~60 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Cow ~-2 ~ ~60 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Cow ~1 ~ ~60 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Cow ~4 ~ ~60 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Cow ~-17 ~ ~64 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Cow ~-14 ~ ~64 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Cow ~-11 ~ ~64 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Cow ~-8 ~ ~64 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Cow ~-5 ~ ~64 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Cow ~-2 ~ ~64 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Cow ~1 ~ ~64 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Cow ~4 ~ ~64 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Pig ~-6 ~ ~44 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Pig ~-3 ~ ~44 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Pig ~ ~ ~44 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Pig ~3 ~ ~44 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Pig ~6 ~ ~44 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Pig ~9 ~ ~44 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Pig ~12 ~ ~44 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Pig ~15 ~ ~44 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Pig ~-6 ~ ~48 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Pig ~-3 ~ ~48 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Pig ~ ~ ~48 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Pig ~3 ~ ~48 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Pig ~6 ~ ~48 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Pig ~9 ~ ~48 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Pig ~12 ~ ~48 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Pig ~15 ~ ~48 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Pig ~-6 ~ ~52 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Pig ~-3 ~ ~52 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Pig ~ ~ ~52 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Pig ~3 ~ ~52 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Pig ~6 ~ ~52 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Pig ~9 ~ ~52 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Pig ~12 ~ ~52 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Pig ~15 ~ ~52 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Pig ~-6 ~ ~56 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Pig ~-3 ~ ~56 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Pig ~ ~ ~56 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Pig ~3 ~ ~56 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Pig ~6 ~ ~56 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Pig ~9 ~ ~56 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Pig ~12 ~ ~56 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Pig ~15 ~ ~56 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Pig ~-6 ~ ~60 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Pig ~-3 ~ ~60 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Pig ~ ~ ~60 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Pig ~3 ~ ~60 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Pig ~6 ~ ~60 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Pig ~9 ~ ~60 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Pig ~12 ~ ~60 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Pig ~15 ~ ~60 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Pig ~-6 ~ ~64 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Pig ~-3 ~ ~64 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Pig ~ ~ ~64 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Pig ~3 ~ ~64 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Pig ~6 ~ ~64 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Pig ~9 ~ ~64 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Pig ~12 ~ ~64 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Pig ~15 ~ ~64 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Sheep ~-21 ~ ~44 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Sheep ~-18 ~ ~44 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Sheep ~-15 ~ ~44 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Sheep ~-12 ~ ~44 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Sheep ~-9 ~ ~44 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Sheep ~-6 ~ ~44 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Sheep ~-3 ~ ~44 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Sheep ~ ~ ~44 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Sheep ~-21 ~ ~48 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Sheep ~-18 ~ ~48 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Sheep ~-15 ~ ~48 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Sheep ~-12 ~ ~48 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Sheep ~-9 ~ ~48 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Sheep ~-6 ~ ~48 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Sheep ~-3 ~ ~48 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Sheep ~ ~ ~48 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Sheep ~-21 ~ ~52 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Sheep ~-18 ~ ~52 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Sheep ~-15 ~ ~52 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Sheep ~-12 ~ ~52 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Sheep ~-9 ~ ~52 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Sheep ~-6 ~ ~52 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Sheep ~-3 ~ ~52 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Sheep ~ ~ ~52 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Sheep ~-21 ~ ~56 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Sheep ~-18 ~ ~56 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Sheep ~-15 ~ ~56 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Sheep ~-12 ~ ~56 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Sheep ~-9 ~ ~56 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Sheep ~-6 ~ ~56 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Sheep ~-3 ~ ~56 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Sheep ~ ~ ~56 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Sheep ~-21 ~ ~60 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Sheep ~-18 ~ ~60 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Sheep ~-15 ~ ~60 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Sheep ~-12 ~ ~60 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Sheep ~-9 ~ ~60 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Sheep ~-6 ~ ~60 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Sheep ~-3 ~ ~60 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Sheep ~ ~ ~60 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Sheep ~-21 ~ ~64 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Sheep ~-18 ~ ~64 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Sheep ~-15 ~ ~64 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Sheep ~-12 ~ ~64 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Sheep ~-9 ~ ~64 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Sheep ~-6 ~ ~64 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Sheep ~-3 ~ ~64 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Sheep ~ ~ ~64 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Chicken ~-2 ~ ~44 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Chicken ~1 ~ ~44 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Chicken ~4 ~ ~44 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Chicken ~7 ~ ~44 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Chicken ~10 ~ ~44 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Chicken ~13 ~ ~44 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Chicken ~16 ~ ~44 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Chicken ~19 ~ ~44 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Chicken ~-2 ~ ~48 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Chicken ~1 ~ ~48 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Chicken ~4 ~ ~48 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Chicken ~7 ~ ~48 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Chicken ~10 ~ ~48 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Chicken ~13 ~ ~48 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Chicken ~16 ~ ~48 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Chicken ~19 ~ ~48 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Chicken ~-2 ~ ~52 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Chicken ~1 ~ ~52 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Chicken ~4 ~ ~52 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Chicken ~7 ~ ~52 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Chicken ~10 ~ ~52 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Chicken ~13 ~ ~52 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Chicken ~16 ~ ~52 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Chicken ~19 ~ ~52 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Chicken ~-2 ~ ~56 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Chicken ~1 ~ ~56 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Chicken ~4 ~ ~56 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Chicken ~7 ~ ~56 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Chicken ~10 ~ ~56 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Chicken ~13 ~ ~56 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Chicken ~16 ~ ~56 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Chicken ~19 ~ ~56 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Chicken ~-2 ~ ~60 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Chicken ~1 ~ ~60 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Chicken ~4 ~ ~60 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Chicken ~7 ~ ~60 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Chicken ~10 ~ ~60 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Chicken ~13 ~ ~60 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Chicken ~16 ~ ~60 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Chicken ~19 ~ ~60 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Chicken ~-2 ~ ~64 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Chicken ~1 ~ ~64 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Chicken ~4 ~ ~64 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Chicken ~7 ~ ~64 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Chicken ~10 ~ ~64 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Chicken ~13 ~ ~64 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Chicken ~16 ~ ~64 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Chicken ~19 ~ ~64 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+
+# villagers
+summon Villager ~-17 ~ ~70 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Villager ~-14 ~ ~70 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Villager ~-11 ~ ~70 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Villager ~-8 ~ ~70 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Villager ~-5 ~ ~70 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Villager ~-2 ~ ~70 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Villager ~1 ~ ~70 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Villager ~4 ~ ~70 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Villager ~-17 ~ ~74 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Villager ~-14 ~ ~74 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Villager ~-11 ~ ~74 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Villager ~-8 ~ ~74 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Villager ~-5 ~ ~74 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Villager ~-2 ~ ~74 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Villager ~1 ~ ~74 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Villager ~4 ~ ~74 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Villager ~-17 ~ ~78 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Villager ~-14 ~ ~78 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Villager ~-11 ~ ~78 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Villager ~-8 ~ ~78 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Villager ~-5 ~ ~78 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Villager ~-2 ~ ~78 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Villager ~1 ~ ~78 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Villager ~4 ~ ~78 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Villager ~-17 ~ ~82 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Villager ~-14 ~ ~82 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Villager ~-11 ~ ~82 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Villager ~-8 ~ ~82 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Villager ~-5 ~ ~82 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Villager ~-2 ~ ~82 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Villager ~1 ~ ~82 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Villager ~4 ~ ~82 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Villager ~-17 ~ ~86 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Villager ~-14 ~ ~86 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Villager ~-11 ~ ~86 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Villager ~-8 ~ ~86 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Villager ~-5 ~ ~86 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Villager ~-2 ~ ~86 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Villager ~1 ~ ~86 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Villager ~4 ~ ~86 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Villager ~-17 ~ ~90 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Villager ~-14 ~ ~90 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Villager ~-11 ~ ~90 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Villager ~-8 ~ ~90 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Villager ~-5 ~ ~90 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Villager ~-2 ~ ~90 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Villager ~1 ~ ~90 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Villager ~4 ~ ~90 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+
+# dropped items, x=2 leg, 12 item types cycled twice
+summon Item ~-10 ~ ~60 {Item:{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-7 ~ ~60 {Item:{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-4 ~ ~60 {Item:{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-1 ~ ~60 {Item:{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~2 ~ ~60 {Item:{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~5 ~ ~60 {Item:{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~8 ~ ~60 {Item:{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~11 ~ ~60 {Item:{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-10 ~ ~62 {Item:{id:264s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-7 ~ ~62 {Item:{id:264s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-4 ~ ~62 {Item:{id:264s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-1 ~ ~62 {Item:{id:264s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~2 ~ ~62 {Item:{id:264s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~5 ~ ~62 {Item:{id:264s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~8 ~ ~62 {Item:{id:264s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~11 ~ ~62 {Item:{id:264s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-10 ~ ~64 {Item:{id:265s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-7 ~ ~64 {Item:{id:265s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-4 ~ ~64 {Item:{id:265s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-1 ~ ~64 {Item:{id:265s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~2 ~ ~64 {Item:{id:265s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~5 ~ ~64 {Item:{id:265s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~8 ~ ~64 {Item:{id:265s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~11 ~ ~64 {Item:{id:265s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-10 ~ ~66 {Item:{id:261s,Count:1b,tag:{ench:[{id:48s,lvl:1s}]}},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-7 ~ ~66 {Item:{id:261s,Count:1b,tag:{ench:[{id:48s,lvl:1s}]}},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-4 ~ ~66 {Item:{id:261s,Count:1b,tag:{ench:[{id:48s,lvl:1s}]}},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-1 ~ ~66 {Item:{id:261s,Count:1b,tag:{ench:[{id:48s,lvl:1s}]}},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~2 ~ ~66 {Item:{id:261s,Count:1b,tag:{ench:[{id:48s,lvl:1s}]}},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~5 ~ ~66 {Item:{id:261s,Count:1b,tag:{ench:[{id:48s,lvl:1s}]}},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~8 ~ ~66 {Item:{id:261s,Count:1b,tag:{ench:[{id:48s,lvl:1s}]}},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~11 ~ ~66 {Item:{id:261s,Count:1b,tag:{ench:[{id:48s,lvl:1s}]}},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-10 ~ ~68 {Item:{id:322s,Count:1b,Damage:1s},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-7 ~ ~68 {Item:{id:322s,Count:1b,Damage:1s},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-4 ~ ~68 {Item:{id:322s,Count:1b,Damage:1s},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-1 ~ ~68 {Item:{id:322s,Count:1b,Damage:1s},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~2 ~ ~68 {Item:{id:322s,Count:1b,Damage:1s},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~5 ~ ~68 {Item:{id:322s,Count:1b,Damage:1s},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~8 ~ ~68 {Item:{id:322s,Count:1b,Damage:1s},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~11 ~ ~68 {Item:{id:322s,Count:1b,Damage:1s},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-10 ~ ~70 {Item:{id:403s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-7 ~ ~70 {Item:{id:403s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-4 ~ ~70 {Item:{id:403s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-1 ~ ~70 {Item:{id:403s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~2 ~ ~70 {Item:{id:403s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~5 ~ ~70 {Item:{id:403s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~8 ~ ~70 {Item:{id:403s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~11 ~ ~70 {Item:{id:403s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-10 ~ ~72 {Item:{id:373s,Count:1b,Damage:8193s},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-7 ~ ~72 {Item:{id:373s,Count:1b,Damage:8193s},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-4 ~ ~72 {Item:{id:373s,Count:1b,Damage:8193s},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-1 ~ ~72 {Item:{id:373s,Count:1b,Damage:8193s},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~2 ~ ~72 {Item:{id:373s,Count:1b,Damage:8193s},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~5 ~ ~72 {Item:{id:373s,Count:1b,Damage:8193s},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~8 ~ ~72 {Item:{id:373s,Count:1b,Damage:8193s},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~11 ~ ~72 {Item:{id:373s,Count:1b,Damage:8193s},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-10 ~ ~74 {Item:{id:299s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-7 ~ ~74 {Item:{id:299s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-4 ~ ~74 {Item:{id:299s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-1 ~ ~74 {Item:{id:299s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~2 ~ ~74 {Item:{id:299s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~5 ~ ~74 {Item:{id:299s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~8 ~ ~74 {Item:{id:299s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~11 ~ ~74 {Item:{id:299s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-10 ~ ~76 {Item:{id:1s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-7 ~ ~76 {Item:{id:1s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-4 ~ ~76 {Item:{id:1s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-1 ~ ~76 {Item:{id:1s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~2 ~ ~76 {Item:{id:1s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~5 ~ ~76 {Item:{id:1s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~8 ~ ~76 {Item:{id:1s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~11 ~ ~76 {Item:{id:1s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-10 ~ ~78 {Item:{id:20s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-7 ~ ~78 {Item:{id:20s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-4 ~ ~78 {Item:{id:20s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-1 ~ ~78 {Item:{id:20s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~2 ~ ~78 {Item:{id:20s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~5 ~ ~78 {Item:{id:20s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~8 ~ ~78 {Item:{id:20s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~11 ~ ~78 {Item:{id:20s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-10 ~ ~80 {Item:{id:50s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-7 ~ ~80 {Item:{id:50s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-4 ~ ~80 {Item:{id:50s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-1 ~ ~80 {Item:{id:50s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~2 ~ ~80 {Item:{id:50s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~5 ~ ~80 {Item:{id:50s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~8 ~ ~80 {Item:{id:50s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~11 ~ ~80 {Item:{id:50s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-10 ~ ~82 {Item:{id:4s,Count:64b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-7 ~ ~82 {Item:{id:4s,Count:64b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-4 ~ ~82 {Item:{id:4s,Count:64b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-1 ~ ~82 {Item:{id:4s,Count:64b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~2 ~ ~82 {Item:{id:4s,Count:64b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~5 ~ ~82 {Item:{id:4s,Count:64b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~8 ~ ~82 {Item:{id:4s,Count:64b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~11 ~ ~82 {Item:{id:4s,Count:64b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-10 ~ ~84 {Item:{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-7 ~ ~84 {Item:{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-4 ~ ~84 {Item:{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-1 ~ ~84 {Item:{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~2 ~ ~84 {Item:{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~5 ~ ~84 {Item:{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~8 ~ ~84 {Item:{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~11 ~ ~84 {Item:{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-10 ~ ~86 {Item:{id:264s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-7 ~ ~86 {Item:{id:264s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-4 ~ ~86 {Item:{id:264s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-1 ~ ~86 {Item:{id:264s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~2 ~ ~86 {Item:{id:264s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~5 ~ ~86 {Item:{id:264s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~8 ~ ~86 {Item:{id:264s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~11 ~ ~86 {Item:{id:264s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-10 ~ ~88 {Item:{id:265s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-7 ~ ~88 {Item:{id:265s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-4 ~ ~88 {Item:{id:265s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-1 ~ ~88 {Item:{id:265s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~2 ~ ~88 {Item:{id:265s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~5 ~ ~88 {Item:{id:265s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~8 ~ ~88 {Item:{id:265s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~11 ~ ~88 {Item:{id:265s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-10 ~ ~90 {Item:{id:261s,Count:1b,tag:{ench:[{id:48s,lvl:1s}]}},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-7 ~ ~90 {Item:{id:261s,Count:1b,tag:{ench:[{id:48s,lvl:1s}]}},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-4 ~ ~90 {Item:{id:261s,Count:1b,tag:{ench:[{id:48s,lvl:1s}]}},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-1 ~ ~90 {Item:{id:261s,Count:1b,tag:{ench:[{id:48s,lvl:1s}]}},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~2 ~ ~90 {Item:{id:261s,Count:1b,tag:{ench:[{id:48s,lvl:1s}]}},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~5 ~ ~90 {Item:{id:261s,Count:1b,tag:{ench:[{id:48s,lvl:1s}]}},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~8 ~ ~90 {Item:{id:261s,Count:1b,tag:{ench:[{id:48s,lvl:1s}]}},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~11 ~ ~90 {Item:{id:261s,Count:1b,tag:{ench:[{id:48s,lvl:1s}]}},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-10 ~ ~92 {Item:{id:322s,Count:1b,Damage:1s},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-7 ~ ~92 {Item:{id:322s,Count:1b,Damage:1s},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-4 ~ ~92 {Item:{id:322s,Count:1b,Damage:1s},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-1 ~ ~92 {Item:{id:322s,Count:1b,Damage:1s},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~2 ~ ~92 {Item:{id:322s,Count:1b,Damage:1s},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~5 ~ ~92 {Item:{id:322s,Count:1b,Damage:1s},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~8 ~ ~92 {Item:{id:322s,Count:1b,Damage:1s},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~11 ~ ~92 {Item:{id:322s,Count:1b,Damage:1s},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-10 ~ ~94 {Item:{id:403s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-7 ~ ~94 {Item:{id:403s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-4 ~ ~94 {Item:{id:403s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-1 ~ ~94 {Item:{id:403s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~2 ~ ~94 {Item:{id:403s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~5 ~ ~94 {Item:{id:403s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~8 ~ ~94 {Item:{id:403s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~11 ~ ~94 {Item:{id:403s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-10 ~ ~96 {Item:{id:373s,Count:1b,Damage:8193s},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-7 ~ ~96 {Item:{id:373s,Count:1b,Damage:8193s},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-4 ~ ~96 {Item:{id:373s,Count:1b,Damage:8193s},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-1 ~ ~96 {Item:{id:373s,Count:1b,Damage:8193s},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~2 ~ ~96 {Item:{id:373s,Count:1b,Damage:8193s},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~5 ~ ~96 {Item:{id:373s,Count:1b,Damage:8193s},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~8 ~ ~96 {Item:{id:373s,Count:1b,Damage:8193s},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~11 ~ ~96 {Item:{id:373s,Count:1b,Damage:8193s},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-10 ~ ~98 {Item:{id:299s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-7 ~ ~98 {Item:{id:299s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-4 ~ ~98 {Item:{id:299s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-1 ~ ~98 {Item:{id:299s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~2 ~ ~98 {Item:{id:299s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~5 ~ ~98 {Item:{id:299s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~8 ~ ~98 {Item:{id:299s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~11 ~ ~98 {Item:{id:299s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-10 ~ ~100 {Item:{id:1s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-7 ~ ~100 {Item:{id:1s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-4 ~ ~100 {Item:{id:1s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-1 ~ ~100 {Item:{id:1s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~2 ~ ~100 {Item:{id:1s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~5 ~ ~100 {Item:{id:1s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~8 ~ ~100 {Item:{id:1s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~11 ~ ~100 {Item:{id:1s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-10 ~ ~102 {Item:{id:20s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-7 ~ ~102 {Item:{id:20s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-4 ~ ~102 {Item:{id:20s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-1 ~ ~102 {Item:{id:20s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~2 ~ ~102 {Item:{id:20s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~5 ~ ~102 {Item:{id:20s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~8 ~ ~102 {Item:{id:20s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~11 ~ ~102 {Item:{id:20s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-10 ~ ~104 {Item:{id:50s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-7 ~ ~104 {Item:{id:50s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-4 ~ ~104 {Item:{id:50s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-1 ~ ~104 {Item:{id:50s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~2 ~ ~104 {Item:{id:50s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~5 ~ ~104 {Item:{id:50s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~8 ~ ~104 {Item:{id:50s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~11 ~ ~104 {Item:{id:50s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-10 ~ ~106 {Item:{id:4s,Count:64b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-7 ~ ~106 {Item:{id:4s,Count:64b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-4 ~ ~106 {Item:{id:4s,Count:64b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-1 ~ ~106 {Item:{id:4s,Count:64b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~2 ~ ~106 {Item:{id:4s,Count:64b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~5 ~ ~106 {Item:{id:4s,Count:64b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~8 ~ ~106 {Item:{id:4s,Count:64b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~11 ~ ~106 {Item:{id:4s,Count:64b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+
+# fire strip
+setblock ~4 ~ ~110 minecraft:dispenser 0 replace {CustomName:"flyby"}
+setblock ~4 ~1 ~110 minecraft:fire
+setblock ~-4 ~ ~114 minecraft:dispenser 0 replace {CustomName:"flyby"}
+setblock ~-4 ~1 ~114 minecraft:fire
+setblock ~4 ~ ~118 minecraft:dispenser 0 replace {CustomName:"flyby"}
+setblock ~4 ~1 ~118 minecraft:fire
+setblock ~-4 ~ ~122 minecraft:dispenser 0 replace {CustomName:"flyby"}
+setblock ~-4 ~1 ~122 minecraft:fire
+
+# slowed cows, z=133 leg
+summon Cow ~-22 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-19 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-16 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-13 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-10 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-7 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-4 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-1 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-26 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-23 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-20 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-17 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-14 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-11 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-8 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-5 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-30 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-27 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-24 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-21 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-18 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-15 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-12 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-9 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-34 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-31 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-28 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-25 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-22 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-19 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-16 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-13 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-38 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-35 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-32 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-29 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-26 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-23 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-20 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-17 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-42 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-39 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-36 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-33 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-30 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-27 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-24 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-21 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-46 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-43 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-40 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-37 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-34 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-31 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-28 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-25 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-50 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-47 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-44 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-41 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-38 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-35 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-32 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-29 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-54 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-51 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-48 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-45 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-42 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-39 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-36 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-33 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-58 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-55 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-52 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-49 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-46 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-43 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-40 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-37 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-62 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-59 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-56 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-53 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-50 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-47 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-44 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-41 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-66 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-63 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-60 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-57 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-54 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-51 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-48 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-45 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-70 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-67 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-64 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-61 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-58 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-55 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-52 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-49 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-74 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-71 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-68 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-65 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-62 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-59 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-56 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-53 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-78 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-75 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-72 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-69 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-66 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-63 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-60 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-57 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-82 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-79 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-76 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-73 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-70 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-67 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-64 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-61 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+
+# plain zombies, z=123 leg
+summon Zombie ~-92 ~ ~123 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Zombie ~-89 ~ ~123 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Zombie ~-86 ~ ~123 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Zombie ~-83 ~ ~123 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Zombie ~-80 ~ ~123 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Zombie ~-77 ~ ~123 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Zombie ~-74 ~ ~123 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Zombie ~-71 ~ ~123 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Zombie ~-96 ~ ~123 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Zombie ~-93 ~ ~123 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Zombie ~-90 ~ ~123 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Zombie ~-87 ~ ~123 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Zombie ~-84 ~ ~123 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Zombie ~-81 ~ ~123 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Zombie ~-78 ~ ~123 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Zombie ~-75 ~ ~123 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Zombie ~-100 ~ ~123 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Zombie ~-97 ~ ~123 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Zombie ~-94 ~ ~123 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Zombie ~-91 ~ ~123 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Zombie ~-88 ~ ~123 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Zombie ~-85 ~ ~123 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Zombie ~-82 ~ ~123 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Zombie ~-79 ~ ~123 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Zombie ~-104 ~ ~123 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Zombie ~-101 ~ ~123 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Zombie ~-98 ~ ~123 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Zombie ~-95 ~ ~123 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Zombie ~-92 ~ ~123 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Zombie ~-89 ~ ~123 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Zombie ~-86 ~ ~123 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Zombie ~-83 ~ ~123 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Zombie ~-108 ~ ~123 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Zombie ~-105 ~ ~123 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Zombie ~-102 ~ ~123 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Zombie ~-99 ~ ~123 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Zombie ~-96 ~ ~123 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Zombie ~-93 ~ ~123 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Zombie ~-90 ~ ~123 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Zombie ~-87 ~ ~123 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Zombie ~-112 ~ ~123 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Zombie ~-109 ~ ~123 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Zombie ~-106 ~ ~123 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Zombie ~-103 ~ ~123 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Zombie ~-100 ~ ~123 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Zombie ~-97 ~ ~123 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Zombie ~-94 ~ ~123 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Zombie ~-91 ~ ~123 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Zombie ~-116 ~ ~123 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Zombie ~-113 ~ ~123 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Zombie ~-110 ~ ~123 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Zombie ~-107 ~ ~123 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Zombie ~-104 ~ ~123 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Zombie ~-101 ~ ~123 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Zombie ~-98 ~ ~123 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Zombie ~-95 ~ ~123 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Zombie ~-120 ~ ~123 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Zombie ~-117 ~ ~123 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Zombie ~-114 ~ ~123 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Zombie ~-111 ~ ~123 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Zombie ~-108 ~ ~123 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Zombie ~-105 ~ ~123 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Zombie ~-102 ~ ~123 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Zombie ~-99 ~ ~123 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+
+# dropped items, z=126 leg, 12 item types once
+summon Item ~-28 ~ ~126 {Item:{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-25 ~ ~126 {Item:{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-22 ~ ~126 {Item:{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-19 ~ ~126 {Item:{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-16 ~ ~126 {Item:{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-13 ~ ~126 {Item:{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-10 ~ ~126 {Item:{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-7 ~ ~126 {Item:{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-32 ~ ~126 {Item:{id:264s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-29 ~ ~126 {Item:{id:264s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-26 ~ ~126 {Item:{id:264s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-23 ~ ~126 {Item:{id:264s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-20 ~ ~126 {Item:{id:264s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-17 ~ ~126 {Item:{id:264s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-14 ~ ~126 {Item:{id:264s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-11 ~ ~126 {Item:{id:264s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-36 ~ ~126 {Item:{id:265s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-33 ~ ~126 {Item:{id:265s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-30 ~ ~126 {Item:{id:265s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-27 ~ ~126 {Item:{id:265s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-24 ~ ~126 {Item:{id:265s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-21 ~ ~126 {Item:{id:265s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-18 ~ ~126 {Item:{id:265s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-15 ~ ~126 {Item:{id:265s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-40 ~ ~126 {Item:{id:261s,Count:1b,tag:{ench:[{id:48s,lvl:1s}]}},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-37 ~ ~126 {Item:{id:261s,Count:1b,tag:{ench:[{id:48s,lvl:1s}]}},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-34 ~ ~126 {Item:{id:261s,Count:1b,tag:{ench:[{id:48s,lvl:1s}]}},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-31 ~ ~126 {Item:{id:261s,Count:1b,tag:{ench:[{id:48s,lvl:1s}]}},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-28 ~ ~126 {Item:{id:261s,Count:1b,tag:{ench:[{id:48s,lvl:1s}]}},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-25 ~ ~126 {Item:{id:261s,Count:1b,tag:{ench:[{id:48s,lvl:1s}]}},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-22 ~ ~126 {Item:{id:261s,Count:1b,tag:{ench:[{id:48s,lvl:1s}]}},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-19 ~ ~126 {Item:{id:261s,Count:1b,tag:{ench:[{id:48s,lvl:1s}]}},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-44 ~ ~126 {Item:{id:322s,Count:1b,Damage:1s},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-41 ~ ~126 {Item:{id:322s,Count:1b,Damage:1s},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-38 ~ ~126 {Item:{id:322s,Count:1b,Damage:1s},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-35 ~ ~126 {Item:{id:322s,Count:1b,Damage:1s},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-32 ~ ~126 {Item:{id:322s,Count:1b,Damage:1s},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-29 ~ ~126 {Item:{id:322s,Count:1b,Damage:1s},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-26 ~ ~126 {Item:{id:322s,Count:1b,Damage:1s},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-23 ~ ~126 {Item:{id:322s,Count:1b,Damage:1s},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-48 ~ ~126 {Item:{id:403s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-45 ~ ~126 {Item:{id:403s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-42 ~ ~126 {Item:{id:403s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-39 ~ ~126 {Item:{id:403s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-36 ~ ~126 {Item:{id:403s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-33 ~ ~126 {Item:{id:403s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-30 ~ ~126 {Item:{id:403s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-27 ~ ~126 {Item:{id:403s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-52 ~ ~126 {Item:{id:373s,Count:1b,Damage:8193s},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-49 ~ ~126 {Item:{id:373s,Count:1b,Damage:8193s},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-46 ~ ~126 {Item:{id:373s,Count:1b,Damage:8193s},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-43 ~ ~126 {Item:{id:373s,Count:1b,Damage:8193s},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-40 ~ ~126 {Item:{id:373s,Count:1b,Damage:8193s},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-37 ~ ~126 {Item:{id:373s,Count:1b,Damage:8193s},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-34 ~ ~126 {Item:{id:373s,Count:1b,Damage:8193s},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-31 ~ ~126 {Item:{id:373s,Count:1b,Damage:8193s},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-56 ~ ~126 {Item:{id:299s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-53 ~ ~126 {Item:{id:299s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-50 ~ ~126 {Item:{id:299s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-47 ~ ~126 {Item:{id:299s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-44 ~ ~126 {Item:{id:299s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-41 ~ ~126 {Item:{id:299s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-38 ~ ~126 {Item:{id:299s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-35 ~ ~126 {Item:{id:299s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-60 ~ ~126 {Item:{id:1s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-57 ~ ~126 {Item:{id:1s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-54 ~ ~126 {Item:{id:1s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-51 ~ ~126 {Item:{id:1s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-48 ~ ~126 {Item:{id:1s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-45 ~ ~126 {Item:{id:1s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-42 ~ ~126 {Item:{id:1s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-39 ~ ~126 {Item:{id:1s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-64 ~ ~126 {Item:{id:20s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-61 ~ ~126 {Item:{id:20s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-58 ~ ~126 {Item:{id:20s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-55 ~ ~126 {Item:{id:20s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-52 ~ ~126 {Item:{id:20s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-49 ~ ~126 {Item:{id:20s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-46 ~ ~126 {Item:{id:20s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-43 ~ ~126 {Item:{id:20s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-68 ~ ~126 {Item:{id:50s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-65 ~ ~126 {Item:{id:50s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-62 ~ ~126 {Item:{id:50s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-59 ~ ~126 {Item:{id:50s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-56 ~ ~126 {Item:{id:50s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-53 ~ ~126 {Item:{id:50s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-50 ~ ~126 {Item:{id:50s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-47 ~ ~126 {Item:{id:50s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-72 ~ ~126 {Item:{id:4s,Count:64b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-69 ~ ~126 {Item:{id:4s,Count:64b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-66 ~ ~126 {Item:{id:4s,Count:64b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-63 ~ ~126 {Item:{id:4s,Count:64b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-60 ~ ~126 {Item:{id:4s,Count:64b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-57 ~ ~126 {Item:{id:4s,Count:64b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-54 ~ ~126 {Item:{id:4s,Count:64b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-51 ~ ~126 {Item:{id:4s,Count:64b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}

scripts/flyby-scenes/entities.txt

@@ -0,0 +1,139 @@
+# Summons are relative to the player; start facing south (yaw 0).
+
+# gamerules
+difficulty 1
+gamerule doMobSpawning false
+gamerule doFireTick false
+gamerule mobGriefing false
+
+# hurt-flash + glint zombies, x=-5 leg
+summon Zombie ~-5 ~ ~10 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:19b,Amplifier:0b,Duration:1000000},{Id:10b,Amplifier:1b,Duration:1000000}],Equipment:[{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},{id:313s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:312s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:311s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:310s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon Zombie ~-5 ~ ~14 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:19b,Amplifier:0b,Duration:1000000},{Id:10b,Amplifier:1b,Duration:1000000}],Equipment:[{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},{id:313s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:312s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:311s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:310s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon Zombie ~-5 ~ ~18 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:19b,Amplifier:0b,Duration:1000000},{Id:10b,Amplifier:1b,Duration:1000000}],Equipment:[{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},{id:313s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:312s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:311s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:310s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon Zombie ~-5 ~ ~22 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:19b,Amplifier:0b,Duration:1000000},{Id:10b,Amplifier:1b,Duration:1000000}],Equipment:[{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},{id:313s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:312s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:311s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:310s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon Zombie ~-5 ~ ~26 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:19b,Amplifier:0b,Duration:1000000},{Id:10b,Amplifier:1b,Duration:1000000}],Equipment:[{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},{id:313s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:312s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:311s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:310s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon Zombie ~-5 ~ ~30 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:19b,Amplifier:0b,Duration:1000000},{Id:10b,Amplifier:1b,Duration:1000000}],Equipment:[{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},{id:313s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:312s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:311s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:310s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon Zombie ~-5 ~ ~34 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:19b,Amplifier:0b,Duration:1000000},{Id:10b,Amplifier:1b,Duration:1000000}],Equipment:[{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},{id:313s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:312s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:311s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:310s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon Zombie ~-5 ~ ~38 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:19b,Amplifier:0b,Duration:1000000},{Id:10b,Amplifier:1b,Duration:1000000}],Equipment:[{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},{id:313s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:312s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:311s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:310s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+
+# pigzombies, x=6 leg
+summon PigZombie ~6 ~ ~10 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],Equipment:[{id:283s,Count:1b},{id:317s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:316s,Count:1b},{id:315s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:314s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon PigZombie ~6 ~ ~14 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],Equipment:[{id:283s,Count:1b},{id:317s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:316s,Count:1b},{id:315s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:314s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon PigZombie ~6 ~ ~18 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],Equipment:[{id:283s,Count:1b},{id:317s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:316s,Count:1b},{id:315s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:314s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon PigZombie ~6 ~ ~22 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],Equipment:[{id:283s,Count:1b},{id:317s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:316s,Count:1b},{id:315s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:314s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon PigZombie ~6 ~ ~26 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],Equipment:[{id:283s,Count:1b},{id:317s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:316s,Count:1b},{id:315s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:314s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon PigZombie ~6 ~ ~30 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],Equipment:[{id:283s,Count:1b},{id:317s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:316s,Count:1b},{id:315s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:314s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon PigZombie ~6 ~ ~34 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],Equipment:[{id:283s,Count:1b},{id:317s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:316s,Count:1b},{id:315s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:314s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+summon PigZombie ~6 ~ ~38 {PersistenceRequired:1b,HealF:200.0f,Attributes:[{Name:"generic.maxHealth",Base:200.0d},{Name:"generic.movementSpeed",Base:0.0d}],Equipment:[{id:283s,Count:1b},{id:317s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:316s,Count:1b},{id:315s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}},{id:314s,Count:1b,tag:{ench:[{id:0s,lvl:1s}]}}],ForgeData:{flyby:1b}}
+
+# passive mobs, grouped by species
+summon Cow ~-5 ~ ~44 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Cow ~-5 ~ ~48 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Cow ~-5 ~ ~52 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Cow ~-5 ~ ~56 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Cow ~-5 ~ ~60 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Cow ~-5 ~ ~64 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Pig ~6 ~ ~44 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Pig ~6 ~ ~48 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Pig ~6 ~ ~52 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Pig ~6 ~ ~56 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Pig ~6 ~ ~60 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Pig ~6 ~ ~64 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Sheep ~-9 ~ ~44 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Sheep ~-9 ~ ~48 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Sheep ~-9 ~ ~52 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Sheep ~-9 ~ ~56 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Sheep ~-9 ~ ~60 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Sheep ~-9 ~ ~64 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Chicken ~10 ~ ~44 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Chicken ~10 ~ ~48 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Chicken ~10 ~ ~52 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Chicken ~10 ~ ~56 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Chicken ~10 ~ ~60 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Chicken ~10 ~ ~64 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+
+# villagers
+summon Villager ~-5 ~ ~70 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Villager ~-5 ~ ~74 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Villager ~-5 ~ ~78 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Villager ~-5 ~ ~82 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Villager ~-5 ~ ~86 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Villager ~-5 ~ ~90 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+
+# dropped items, x=2 leg, 12 item types cycled twice
+summon Item ~2 ~ ~60 {Item:{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~2 ~ ~62 {Item:{id:264s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~2 ~ ~64 {Item:{id:265s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~2 ~ ~66 {Item:{id:261s,Count:1b,tag:{ench:[{id:48s,lvl:1s}]}},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~2 ~ ~68 {Item:{id:322s,Count:1b,Damage:1s},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~2 ~ ~70 {Item:{id:403s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~2 ~ ~72 {Item:{id:373s,Count:1b,Damage:8193s},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~2 ~ ~74 {Item:{id:299s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~2 ~ ~76 {Item:{id:1s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~2 ~ ~78 {Item:{id:20s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~2 ~ ~80 {Item:{id:50s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~2 ~ ~82 {Item:{id:4s,Count:64b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~2 ~ ~84 {Item:{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~2 ~ ~86 {Item:{id:264s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~2 ~ ~88 {Item:{id:265s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~2 ~ ~90 {Item:{id:261s,Count:1b,tag:{ench:[{id:48s,lvl:1s}]}},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~2 ~ ~92 {Item:{id:322s,Count:1b,Damage:1s},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~2 ~ ~94 {Item:{id:403s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~2 ~ ~96 {Item:{id:373s,Count:1b,Damage:8193s},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~2 ~ ~98 {Item:{id:299s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~2 ~ ~100 {Item:{id:1s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~2 ~ ~102 {Item:{id:20s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~2 ~ ~104 {Item:{id:50s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~2 ~ ~106 {Item:{id:4s,Count:64b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+
+# fire strip
+setblock ~4 ~ ~110 minecraft:dispenser 0 replace {CustomName:"flyby"}
+setblock ~4 ~1 ~110 minecraft:fire
+setblock ~-4 ~ ~114 minecraft:dispenser 0 replace {CustomName:"flyby"}
+setblock ~-4 ~1 ~114 minecraft:fire
+setblock ~4 ~ ~118 minecraft:dispenser 0 replace {CustomName:"flyby"}
+setblock ~4 ~1 ~118 minecraft:fire
+setblock ~-4 ~ ~122 minecraft:dispenser 0 replace {CustomName:"flyby"}
+setblock ~-4 ~1 ~122 minecraft:fire
+
+# slowed cows, z=133 leg
+summon Cow ~-10 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-14 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-18 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-22 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-26 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-30 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-34 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-38 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-42 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-46 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-50 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-54 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-58 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-62 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-66 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+summon Cow ~-70 ~ ~133 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ActiveEffects:[{Id:1b,Amplifier:0b,Duration:1000000}],ForgeData:{flyby:1b}}
+
+# plain zombies, z=123 leg
+summon Zombie ~-80 ~ ~123 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Zombie ~-84 ~ ~123 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Zombie ~-88 ~ ~123 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Zombie ~-92 ~ ~123 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Zombie ~-96 ~ ~123 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Zombie ~-100 ~ ~123 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Zombie ~-104 ~ ~123 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+summon Zombie ~-108 ~ ~123 {PersistenceRequired:1b,Attributes:[{Name:"generic.movementSpeed",Base:0.0d}],ForgeData:{flyby:1b}}
+
+# dropped items, z=126 leg, 12 item types once
+summon Item ~-16 ~ ~126 {Item:{id:276s,Count:1b,tag:{ench:[{id:16s,lvl:1s}]}},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-20 ~ ~126 {Item:{id:264s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-24 ~ ~126 {Item:{id:265s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-28 ~ ~126 {Item:{id:261s,Count:1b,tag:{ench:[{id:48s,lvl:1s}]}},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-32 ~ ~126 {Item:{id:322s,Count:1b,Damage:1s},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-36 ~ ~126 {Item:{id:403s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-40 ~ ~126 {Item:{id:373s,Count:1b,Damage:8193s},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-44 ~ ~126 {Item:{id:299s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-48 ~ ~126 {Item:{id:1s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-52 ~ ~126 {Item:{id:20s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-56 ~ ~126 {Item:{id:50s,Count:1b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}
+summon Item ~-60 ~ ~126 {Item:{id:4s,Count:64b},Age:-32768s,Lifespan:2147483647,Owner:"flyby",ForgeData:{flyby:1b}}

sdl-gpu/build.gradle.kts

@@ -77,6 +77,9 @@ dependencies {
     testImplementation(platform(libs.junit.bom))
     testImplementation(libs.junit.jupiter)
     testImplementation(testFixtures(project(":glsm")))
+    testImplementation(project(":glsm")) {
+        capabilities { requireCapability("${project.group}:glsm-stubs") }
+    }
     testImplementation(libs.celeritas.common) { isTransitive = false }
     testImplementation(libs.lwjgl3.opengl)
     // GL.<clinit> loads liblwjgl_opengl.so. Test scope only: a root-level runtimeOnly collides with lwjgl3Bindings.
@@ -84,15 +87,77 @@ dependencies {
     testRuntimeOnly(libs.junit.platform.launcher)
     testRuntimeOnly(libs.log4j.core)
     testRuntimeOnly(libs.fastutil)
+    testRuntimeOnly(libs.joml)
+    testRuntimeOnly(libs.commons.lang3)
+    testRuntimeOnly(libs.guava)
+    testImplementation(libs.asm.tree.test)
+}
+
+val glsmSdlTag = "glsm-sdl"
+
+val glsmSdlStubs = sourceSets.create("glsmSdlStubs") {
+    java.srcDir("src/glsmSdlStubs/java")
+}
+
+val glsmSdlAgent = sourceSets.create("glsmSdlAgent") {
+    java.srcDir("src/glsmSdlAgent/java")
+}
+
+dependencies {
+    "glsmSdlAgentCompileOnly"(project(":glsm"))
+    "glsmSdlAgentCompileOnly"(libs.asm.tree.test)
+    testImplementation(glsmSdlAgent.output)
 }
 
 tasks.test {
-    useJUnitPlatform()
+    useJUnitPlatform {
+        excludeTags(glsmSdlTag)
+    }
     if (System.getProperty("os.name").startsWith("Mac")) {
         jvmArgs("-XstartOnFirstThread")
     }
 }
 
+val glsmSdlRedirectAgentJar by tasks.registering(Jar::class) {
+    archiveClassifier = "glsm-sdl-redirect-agent"
+    from(glsmSdlAgent.output)
+    manifest {
+        attributes("Premain-Class" to "com.gtnewhorizons.angelica.sdlgpu.glsm.GlsmSdlRedirectAgent")
+    }
+}
+
+val glsmSdlTest by tasks.registering(Test::class) {
+    description = "Runs the headless GLSM-on-SDL FFP rig in its own JVM, with the SDL GPU gate engaged."
+    group = "verification"
+    testClassesDirs = sourceSets["test"].output.classesDirs
+    classpath = glsmSdlStubs.output.classesDirs.plus(
+        sourceSets["test"].runtimeClasspath.filter { file ->
+            !file.name.startsWith("lwjgl-2.") && !file.name.startsWith("lwjgl_util-") && !file.name.startsWith("lwjgl-platform-")
+        }
+    )
+    useJUnitPlatform {
+        includeTags(glsmSdlTag)
+    }
+    dependsOn(tasks.named("glsmSdlStubsClasses"), glsmSdlRedirectAgentJar)
+    val agentJarPath = glsmSdlRedirectAgentJar.flatMap { it.archiveFile }.map { it.asFile.path }
+    jvmArgumentProviders.add(CommandLineArgumentProvider { listOf("-javaagent:${agentJarPath.get()}") })
+    jvmArgs(
+        "-Dangelica.sdlgpu.enable=true",
+        "-Dangelica.sdlgpu.disablePresenterThread=true",
+        "-Dceleritas.lwjglService=com.gtnewhorizons.angelica.sdlgpu.SDLGPULWJGLService",
+    )
+    if (System.getProperty("os.name").startsWith("Mac")) {
+        jvmArgs("-XstartOnFirstThread")
+    }
+    testLogging {
+        events("passed", "skipped", "failed")
+        exceptionFormat = org.gradle.api.tasks.testing.logging.TestExceptionFormat.FULL
+    }
+    mustRunAfter(tasks.test)
+}
+
+tasks.check { dependsOn(glsmSdlTest) }
+
 tasks.named<JavaCompile>("compileJava") {
     val classesDir = destinationDirectory
     doLast { injectLwjgl3Aware(classesDir.get().asFile) }

sdl-gpu/src/glsmSdlAgent/java/com/gtnewhorizons/angelica/sdlgpu/glsm/GlsmSdlRedirectAgent.java

@@ -0,0 +1,58 @@
+package com.gtnewhorizons.angelica.sdlgpu.glsm;
+
+import com.gtnewhorizons.angelica.glsm.redirect.GLSMRedirector;
+import org.objectweb.asm.ClassReader;
+import org.objectweb.asm.ClassWriter;
+import org.objectweb.asm.tree.ClassNode;
+
+import java.lang.instrument.ClassFileTransformer;
+import java.lang.instrument.Instrumentation;
+import java.security.ProtectionDomain;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+import java.util.concurrent.atomic.AtomicInteger;
+
+public final class GlsmSdlRedirectAgent {
+
+    private static final String GTNHLIB = "com/gtnewhorizon/gtnhlib/";
+    private static final List<String> FAILURES = Collections.synchronizedList(new ArrayList<>());
+    private static final AtomicInteger TRANSFORMED_COUNT = new AtomicInteger();
+
+    private GlsmSdlRedirectAgent() {}
+
+    public static void premain(String args, Instrumentation instrumentation) {
+        instrumentation.addTransformer(new Redirector());
+    }
+
+    public static List<String> failures() {
+        return List.copyOf(FAILURES);
+    }
+
+    public static int transformedCount() {
+        return TRANSFORMED_COUNT.get();
+    }
+
+    private static final class Redirector implements ClassFileTransformer {
+
+        private final GLSMRedirector redirector = new GLSMRedirector();
+
+        @Override
+        public byte[] transform(ClassLoader loader, String className, Class<?> redefined, ProtectionDomain domain, byte[] classfile) {
+            if (className == null || !className.startsWith(GTNHLIB)) return null;
+            try {
+                if (!redirector.shouldTransform(classfile)) return null;
+                final ClassNode node = new ClassNode();
+                new ClassReader(classfile).accept(node, 0);
+                if (!redirector.transformClassNode(className.replace('/', '.'), node)) return null;
+                final ClassWriter writer = new ClassWriter(ClassWriter.COMPUTE_MAXS);
+                node.accept(writer);
+                TRANSFORMED_COUNT.incrementAndGet();
+                return writer.toByteArray();
+            } catch (Throwable t) {
+                FAILURES.add(className + ": " + t);
+                return null;
+            }
+        }
+    }
+}

sdl-gpu/src/glsmSdlStubs/java/org/lwjgl/Sys.java

@@ -0,0 +1,10 @@
+package org.lwjgl;
+
+public final class Sys {
+
+    private Sys() {}
+
+    public static boolean is64Bit() {
+        return !"32".equals(System.getProperty("sun.arch.data.model"));
+    }
+}

sdl-gpu/src/glsmSdlStubs/java/org/lwjgl/opengl/ContextCapabilities.java

@@ -0,0 +1,31 @@
+package org.lwjgl.opengl;
+
+public class ContextCapabilities {
+
+    public boolean OpenGL30 = true;
+    public boolean OpenGL31 = true;
+    public boolean OpenGL32 = true;
+    public boolean OpenGL33 = true;
+    public boolean OpenGL40 = true;
+    public boolean OpenGL42 = true;
+    public boolean OpenGL43 = true;
+    public boolean OpenGL44 = true;
+    public boolean OpenGL45 = true;
+
+    public boolean GL_ARB_buffer_storage = true;
+    public boolean GL_ARB_clear_texture = true;
+    public boolean GL_ARB_compute_shader = true;
+    public boolean GL_ARB_direct_state_access = false;
+    public boolean GL_ARB_draw_buffers_blend = false;
+    public boolean GL_ARB_multi_draw_indirect = false;
+    public boolean GL_ARB_sampler_objects = true;
+    public boolean GL_ARB_shader_image_load_store = true;
+    public boolean GL_ARB_shader_storage_buffer_object = true;
+    public boolean GL_ARB_tessellation_shader = false;
+
+    public boolean GL_EXT_direct_state_access = false;
+    public boolean GL_EXT_gpu_shader4 = true;
+    public boolean GL_EXT_shader_image_load_store = true;
+
+    public boolean GL_NVX_gpu_memory_info = false;
+}

sdl-gpu/src/glsmSdlStubs/java/org/lwjgl/opengl/Drawable.java

@@ -0,0 +1,8 @@
+package org.lwjgl.opengl;
+
+public interface Drawable {
+
+    void makeCurrent();
+
+    void releaseContext();
+}

sdl-gpu/src/glsmSdlStubs/java/org/lwjgl/opengl/GLContext.java

@@ -0,0 +1,12 @@
+package org.lwjgl.opengl;
+
+public final class GLContext {
+
+    private static final ContextCapabilities CAPABILITIES = new ContextCapabilities();
+
+    private GLContext() {}
+
+    public static ContextCapabilities getCapabilities() {
+        return CAPABILITIES;
+    }
+}

sdl-gpu/src/main/java/com/gtnewhorizons/angelica/sdlgpu/SDLGPUGate.java

@@ -150,6 +150,7 @@ public final class SDLGPUGate {
             try {
                 device().claimWindow(ctx.window());
                 engaged = true;
+                SDLGPULWJGLService.bind();
                 BackendManager.RENDER_BACKEND.onPostWindowCreate(ctx.window());
             } catch (Throwable t) {
                 initFailure = t;
@@ -158,9 +159,10 @@ public final class SDLGPUGate {
     }
 
     public static void fallBackToGL() {
-        if (SDLGPULWJGLService.isOfferedAsAvailable()) {
+        if (SDLGPULWJGLService.isConstructed()) {
             throw new IllegalStateException("Celeritas already selected the SDL GPU LWJGL service; falling back to OpenGL would leave it bound to a dead backend");
         }
+        SDLGPULWJGLService.unbind();
         disarmed = true;
         engaged = false;
         deviceReady = false;

sdl-gpu/src/main/java/com/gtnewhorizons/angelica/sdlgpu/SDLGPULWJGLService.java

@@ -5,10 +5,10 @@ import com.gtnewhorizons.angelica.glsm.GLStateManager;
 import com.gtnewhorizons.angelica.glsm.backend.BackendManager;
 import com.gtnewhorizons.angelica.sdlgpu.device.MemoryStackWrapper;
 import com.gtnewhorizons.angelica.sdlgpu.util.MemoryAccess;
-import com.mitchej123.lwjgl.DebugMessageHandler;
-import com.mitchej123.lwjgl.GLExtension;
-import com.mitchej123.lwjgl.LWJGLService;
-import com.mitchej123.lwjgl.MemoryStack;
+import org.taumc.celeritas.lwjgl.DebugMessageHandler;
+import org.taumc.celeritas.lwjgl.GLExtension;
+import org.taumc.celeritas.lwjgl.LWJGLService;
+import org.taumc.celeritas.lwjgl.MemoryStack;
 import org.lwjgl.system.MemoryUtil;
 
 import java.nio.Buffer;
@@ -17,19 +17,32 @@ import java.nio.FloatBuffer;
 import java.nio.IntBuffer;
 import java.util.Arrays;
 
-/** SDL GPU implementation of {@link LWJGLService} for Celeritas */
-public final class SDLGPULWJGLService extends LWJGLService {
+public final class SDLGPULWJGLService implements LWJGLService {
 
-    private static volatile boolean offeredAsAvailable;
+    private static final ThreadLocal<MemoryStackWrapper> STACK =
+        ThreadLocal.withInitial(() -> new MemoryStackWrapper(org.lwjgl.system.MemoryStack.stackGet()));
 
-    public static boolean isOfferedAsAvailable() { return offeredAsAvailable; }
+    private static volatile boolean constructed;
 
-    @Override public int getPriority() {
-        if (!SystemProperties.USE_SDL_GPU || !SDLGPUGate.isSDLGPUAvailable() || !SDLGPUGate.isEngaged()) {
-            return PRIORITY_UNAVAILABLE;
+    public static SDLGPULWJGLService create() {
+        if (!SDLGPUGate.isEngaged()) {
+            throw new IllegalStateException("SDL GPU is not engaged; " + SystemProperties.KEY_CELERITAS_LWJGL_SERVICE + " must not name " + SDLGPULWJGLService.class.getName());
+        }
+        constructed = true;
+        return new SDLGPULWJGLService();
+    }
+
+    public static boolean isConstructed() { return constructed; }
+
+    static void bind() {
+        System.setProperty(SystemProperties.KEY_CELERITAS_LWJGL_SERVICE, SDLGPULWJGLService.class.getName());
+    }
+
+    static void unbind() {
+        final String key = SystemProperties.KEY_CELERITAS_LWJGL_SERVICE;
+        if (SDLGPULWJGLService.class.getName().equals(System.getProperty(key))) {
+            System.clearProperty(key);
         }
-        offeredAsAvailable = true;
-        return 200;
     }
 
     @Override public boolean isOpenGLVersionSupported(int major, int minor) {
@@ -47,7 +60,6 @@ public final class SDLGPULWJGLService extends LWJGLService {
                  ARB_uniform_buffer_object,
                  ARB_vertex_array_object,
                  ARB_shader_storage_buffer_object,
-                 ARB_instanced_arrays,
                  KHR_debug
                  -> true;
             case ARB_timer_query,
@@ -63,30 +75,58 @@ public final class SDLGPULWJGLService extends LWJGLService {
 
     @Override public int getPointerSize() { return 8; } // 64-bit
 
-    @Override public int glGenBuffers() { return BackendManager.RENDER_BACKEND.genBuffers(); }
-    @Override public void glDeleteBuffers(int buffer) { BackendManager.RENDER_BACKEND.deleteBuffers(buffer); }
+    @Override public int glGenBuffers() { return GLStateManager.glGenBuffers(); }
+    @Override public void glDeleteBuffers(int buffer) { GLStateManager.glDeleteBuffers(buffer); }
     @Override public void glBindBuffer(int target, int buffer) { GLStateManager.glBindBuffer(target, buffer); }
-    @Override public void glBufferData(int target, long size, int usage) { BackendManager.RENDER_BACKEND.bufferData(target, size, usage); }
-    @Override public void glBufferData(int target, ByteBuffer data, int usage) { BackendManager.RENDER_BACKEND.bufferData(target, data, usage); }
+    @Override public void glBufferData(int target, long size, int usage) {
+        GLStateManager.glBufferData(target, size, usage);
+    }
+    @Override public void glBufferData(int target, ByteBuffer data, int usage) {
+        GLStateManager.glBufferData(target, data, usage);
+    }
     @Override public void glBufferData(int target, long size, long data, int usage) {
         if (data != 0) {
-            BackendManager.RENDER_BACKEND.bufferData(target, MemoryUtil.memByteBuffer(data, (int) size), usage);
+            GLStateManager.nglBufferData(target, size, data, usage);
         } else {
-            BackendManager.RENDER_BACKEND.bufferData(target, size, usage);
+            GLStateManager.glBufferData(target, size, usage);
         }
     }
-    @Override public void glBufferSubData(int target, long offset, ByteBuffer data) { BackendManager.RENDER_BACKEND.bufferSubData(target, offset, data); }
-    @Override public void glBufferSubData(int target, long offset, long size, long data) {
-        BackendManager.RENDER_BACKEND.bufferSubData(target, offset, MemoryUtil.memByteBuffer(data, (int) size));
+    @Override public void glBufferStorage(int target, long size, int flags) {
+        GLStateManager.glBufferStorage(target, size, flags);
+    }
+    @Override public void glBlitFramebuffer(int srcX0, int srcY0, int srcX1, int srcY1, int dstX0, int dstY0, int dstX1, int dstY1, int mask, int filter) {
+        GLStateManager.glBlitFramebuffer(srcX0, srcY0, srcX1, srcY1, dstX0, dstY0, dstX1, dstY1, mask, filter);
+    }
+    @Override public void glDrawArrays(int mode, int first, int count) {
+        GLStateManager.glDrawArrays(mode, first, count);
+    }
+    @Override public void glDrawBuffers(int[] buffers) {
+        try (var stack = MemoryStack.stackPush()) {
+            GLStateManager.glDrawBuffers(stack.ints(buffers));
+        }
+    }
+    @Override public void glTexImage2D(int target, int level, int internalFormat, int width, int height, int border, int format, int type, ByteBuffer pixels) {
+        GLStateManager.glTexImage2D(target, level, internalFormat, width, height, border, format, type, pixels);
+    }
+    @Override public void glTexParameteri(int target, int pname, int param) { GLStateManager.glTexParameteri(target, pname, param); }
+    @Override public ByteBuffer glMapBufferRange(int target, long offset, long length, int flags) {
+        return GLStateManager.glMapBufferRange(target, offset, length, flags);
     }
-    @Override public void glBufferStorage(int target, long size, int flags) { BackendManager.RENDER_BACKEND.bufferStorage(target, size, flags); }
-    @Override public ByteBuffer glMapBufferRange(int target, long offset, long length, int flags) { return BackendManager.RENDER_BACKEND.mapBufferRange(target, offset, length, flags); }
     @Override public long nglMapBuffer(int target, int access) { return 0; }
-    @Override public ByteBuffer glMapBuffer(int target, int access) { return BackendManager.RENDER_BACKEND.mapBuffer(target, access); }
-    @Override public void glUnmapBuffer(int target) { BackendManager.RENDER_BACKEND.unmapBuffer(target); }
-    @Override public void glFlushMappedBufferRange(int target, long offset, long length) { BackendManager.RENDER_BACKEND.flushMappedBufferRange(target, offset, length); }
-    @Override public void glCopyBufferSubData(int readTarget, int writeTarget, long readOffset, long writeOffset, long size) { BackendManager.RENDER_BACKEND.copyBufferSubData(readTarget, writeTarget, readOffset, writeOffset, size); }
-    @Override public void glBindBufferBase(int target, int index, int buffer) { BackendManager.RENDER_BACKEND.bindBufferBase(target, index, buffer); }
+    @Override public ByteBuffer glMapBuffer(int target, int access) {
+        return GLStateManager.glMapBuffer(target, access);
+    }
+    @Override public void glUnmapBuffer(int target) { GLStateManager.glUnmapBuffer(target); }
+    @Override public void glFlushMappedBufferRange(int target, long offset, long length) {
+        GLStateManager.glFlushMappedBufferRange(target, offset, length);
+    }
+    @Override public void glCopyBufferSubData(int readTarget, int writeTarget, long readOffset, long writeOffset,
+                                              long size) {
+        GLStateManager.glCopyBufferSubData(readTarget, writeTarget, readOffset, writeOffset, size);
+    }
+    @Override public void glBindBufferBase(int target, int index, int buffer) {
+        GLStateManager.glBindBufferBase(target, index, buffer);
+    }
 
     @Override public int glGenVertexArrays() { return GLStateManager.glGenVertexArrays(); }
     @Override public void glDeleteVertexArrays(int array) { GLStateManager.glDeleteVertexArrays(array); }
@@ -96,63 +136,80 @@ public final class SDLGPULWJGLService extends LWJGLService {
     @Override public void glEnableVertexAttribArray(int index) { GLStateManager.glEnableVertexAttribArray(index); }
     @Override public void glVertexAttribDivisor(int index, int divisor) { GLStateManager.glVertexAttribDivisor(index, divisor); }
 
-    @Override public int glCreateShader(int type) { return BackendManager.RENDER_BACKEND.createShader(type); }
-    @Override public void glShaderSource(int shader, CharSequence source) { BackendManager.RENDER_BACKEND.shaderSource(shader, source); }
-    @Override public void glShaderSourceSafe(int shader, CharSequence source) { BackendManager.RENDER_BACKEND.shaderSource(shader, source); }
-    @Override public void glCompileShader(int shader) { BackendManager.RENDER_BACKEND.compileShader(shader); }
-    @Override public String glGetShaderInfoLog(int shader, int maxLength) { return BackendManager.RENDER_BACKEND.getShaderInfoLog(shader, maxLength); }
-    @Override public int glGetShaderi(int shader, int pname) { return BackendManager.RENDER_BACKEND.getShaderi(shader, pname); }
-    @Override public void glDeleteShader(int shader) { BackendManager.RENDER_BACKEND.deleteShader(shader); }
+    @Override public int glCreateShader(int type) { return GLStateManager.glCreateShader(type); }
+    @Override public void glShaderSource(int shader, CharSequence source) {
+        GLStateManager.glShaderSource(shader, source);
+    }
+    @Override public void glShaderSourceSafe(int shader, CharSequence source) {
+        GLStateManager.glShaderSource(shader, source);
+    }
+    @Override public void glCompileShader(int shader) { GLStateManager.glCompileShader(shader); }
+    @Override public String glGetShaderInfoLog(int shader, int maxLength) {
+        return GLStateManager.glGetShaderInfoLog(shader, maxLength);
+    }
+    @Override public int glGetShaderi(int shader, int pname) { return GLStateManager.glGetShaderi(shader, pname); }
+    @Override public void glDeleteShader(int shader) { GLStateManager.glDeleteShader(shader); }
 
-    @Override public int glCreateProgram() { return BackendManager.RENDER_BACKEND.createProgram(); }
-    @Override public void glAttachShader(int program, int shader) { BackendManager.RENDER_BACKEND.attachShader(program, shader); }
-    @Override public void glLinkProgram(int program) { BackendManager.RENDER_BACKEND.linkProgram(program); }
-    @Override public String glGetProgramInfoLog(int program, int maxLength) { return BackendManager.RENDER_BACKEND.getProgramInfoLog(program, maxLength); }
-    @Override public int glGetProgrami(int program, int pname) { return BackendManager.RENDER_BACKEND.getProgrami(program, pname); }
+    @Override public int glCreateProgram() { return GLStateManager.glCreateProgram(); }
+    @Override public void glAttachShader(int program, int shader) { GLStateManager.glAttachShader(program, shader); }
+    @Override public void glLinkProgram(int program) { GLStateManager.glLinkProgram(program); }
+    @Override public String glGetProgramInfoLog(int program, int maxLength) {
+        return GLStateManager.glGetProgramInfoLog(program, maxLength);
+    }
+    @Override public int glGetProgrami(int program, int pname) { return GLStateManager.glGetProgrami(program, pname); }
     @Override public void glUseProgram(int program) { GLStateManager.glUseProgram(program); }
-    @Override public void glDeleteProgram(int program) { BackendManager.RENDER_BACKEND.deleteProgram(program); }
-    @Override public void glBindAttribLocation(int program, int index, CharSequence name) { BackendManager.RENDER_BACKEND.bindAttribLocation(program, index, name); }
+    @Override public void glDeleteProgram(int program) { GLStateManager.glDeleteProgram(program); }
+    @Override public void glBindAttribLocation(int program, int index, CharSequence name) {
+        GLStateManager.glBindAttribLocation(program, index, name);
+    }
     @Override public void glBindFragDataLocation(int program, int colorNumber, CharSequence name) {}
 
-    @Override public int glGetUniformLocation(int program, CharSequence name) { return BackendManager.RENDER_BACKEND.getUniformLocation(program, name); }
+    @Override public int glGetUniformLocation(int program, CharSequence name) {
+        return GLStateManager.glGetUniformLocation(program, name);
+    }
     @Override public int glGetUniformBlockIndex(int program, CharSequence name) { return -1; /* TODO */ }
     @Override public void glUniformBlockBinding(int program, int blockIndex, int blockBinding) { /* TODO */ }
-    @Override public void glUniform1f(int location, float v0) { BackendManager.RENDER_BACKEND.uniform1f(location, v0); }
-    @Override public void glUniform1i(int location, int v0) { BackendManager.RENDER_BACKEND.uniform1i(location, v0); }
-    @Override public void glUniform1fv(int location, FloatBuffer value) { BackendManager.RENDER_BACKEND.uniform1fv(location, value); }
-    @Override public void glUniform2i(int location, int v0, int v1) { BackendManager.RENDER_BACKEND.uniform2i(location, v0, v1); }
-    @Override public void glUniform3f(int location, float v0, float v1, float v2) { BackendManager.RENDER_BACKEND.uniform3f(location, v0, v1, v2); }
-    @Override public void glUniform3fv(int location, FloatBuffer value) { BackendManager.RENDER_BACKEND.uniform3(location, value); }
-    @Override public void glUniform3fv(int location, float[] value) {
-        try (var stack = MemoryStack.stackPush()) {
-            final FloatBuffer buf = stack.floats(value);
-            BackendManager.RENDER_BACKEND.uniform3(location, buf);
-        }
+    @Override public void glUniform1f(int location, float v0) { GLStateManager.glUniform1f(location, v0); }
+    @Override public void glUniform1i(int location, int v0) { GLStateManager.glUniform1i(location, v0); }
+    @Override public void glUniform1fv(int location, FloatBuffer value) { GLStateManager.glUniform1(location, value); }
+    @Override public void glUniform2i(int location, int v0, int v1) { GLStateManager.glUniform2i(location, v0, v1); }
+    @Override public void glUniform3f(int location, float v0, float v1, float v2) {
+        GLStateManager.glUniform3f(location, v0, v1, v2);
     }
-    @Override public void glUniform4fv(int location, FloatBuffer value) { BackendManager.RENDER_BACKEND.uniform4(location, value); }
-    @Override public void glUniform4fv(int location, float[] value) {
-        try (var stack = MemoryStack.stackPush()) {
-            final FloatBuffer buf = stack.floats(value);
-            BackendManager.RENDER_BACKEND.uniform4(location, buf);
-        }
+    @Override public void glUniform3fv(int location, FloatBuffer value) { GLStateManager.glUniform3(location, value); }
+    @Override public void glUniform3fv(int location, float[] value) { GLStateManager.glUniform3(location, value); }
+    @Override public void glUniform4fv(int location, FloatBuffer value) { GLStateManager.glUniform4(location, value); }
+    @Override public void glUniform4fv(int location, float[] value) { GLStateManager.glUniform4(location, value); }
+    @Override public void glUniformMatrix3fv(int location, boolean transpose, FloatBuffer value) {
+        GLStateManager.glUniformMatrix3(location, transpose, value);
+    }
+    @Override public void glUniformMatrix4fv(int location, boolean transpose, FloatBuffer value) {
+        GLStateManager.glUniformMatrix4(location, transpose, value);
     }
-    @Override public void glUniformMatrix3fv(int location, boolean transpose, FloatBuffer value) { BackendManager.RENDER_BACKEND.uniformMatrix3(location, transpose, value); }
-    @Override public void glUniformMatrix4fv(int location, boolean transpose, FloatBuffer value) { BackendManager.RENDER_BACKEND.uniformMatrix4(location, transpose, value); }
 
-    @Override public void glDrawElementsBaseVertex(int mode, int count, int type, long indices, int basevertex) { BackendManager.RENDER_BACKEND.drawElementsBaseVertex(mode, count, type, indices, basevertex); }
-    @Override public void glMultiDrawElementsBaseVertex(int mode, long pCount, int type, long pIndices, int drawcount, long pBaseVertex) { BackendManager.RENDER_BACKEND.multiDrawElementsBaseVertex(mode, pCount, type, pIndices, drawcount, pBaseVertex); }
-    @Override public void glMultiDrawElementsIndirect(int mode, int type, long indirect, int drawcount, int stride) { BackendManager.RENDER_BACKEND.multiDrawElementsIndirect(mode, type, indirect, drawcount, stride); }
+    @Override public void glDrawElementsBaseVertex(int mode, int count, int type, long indices, int basevertex) {
+        GLStateManager.glDrawElementsBaseVertex(mode, count, type, indices, basevertex);
+    }
+    @Override public void glMultiDrawElementsBaseVertex(int mode, long pCount, int type, long pIndices, int drawcount,
+                                                        long pBaseVertex) {
+        GLStateManager.glMultiDrawElementsBaseVertex(mode, pCount, type, pIndices, drawcount, pBaseVertex);
+    }
+    @Override public void glMultiDrawElementsIndirect(int mode, int type, long indirect, int drawcount, int stride) {
+        GLStateManager.glMultiDrawElementsIndirect(mode, type, indirect, drawcount, stride);
+    }
 
-    @Override public long glFenceSync(int condition, int flags) { return BackendManager.RENDER_BACKEND.fenceSync(condition, flags); }
-    @Override public int glClientWaitSync(long sync, int flags, long timeout) { return BackendManager.RENDER_BACKEND.clientWaitSync(sync, flags, timeout); }
+    @Override public long glFenceSync(int condition, int flags) { return GLStateManager.glFenceSync(condition, flags); }
+    @Override public int glClientWaitSync(long sync, int flags, long timeout) {
+        return GLStateManager.glClientWaitSync(sync, flags, timeout);
+    }
     @Override public int glGetSynci(long sync, int pname, IntBuffer length) {
         if (length != null && length.remaining() > 0) length.put(0, 1);
         return ((SDLGPURenderBackend) BackendManager.RENDER_BACKEND).getSyncStatus(sync);
     }
     @Override public void glWaitSync(long sync, int flags, long timeout) {
-        ((SDLGPURenderBackend) BackendManager.RENDER_BACKEND).waitSync(sync, flags, timeout);
+        GLStateManager.glWaitSync(sync, flags, timeout);
     }
-    @Override public void glDeleteSync(long sync) { BackendManager.RENDER_BACKEND.deleteSync(sync); }
+    @Override public void glDeleteSync(long sync) { GLStateManager.glDeleteSync(sync); }
 
     private long[] queryElapsed = new long[64];
     private int activeQueryId = -1;
@@ -164,7 +221,7 @@ public final class SDLGPULWJGLService extends LWJGLService {
         }
     }
 
-    @Override public int glGenQueries() { return BackendManager.RENDER_BACKEND.genQueries(); }
+    @Override public int glGenQueries() { return GLStateManager.glGenQueries(); }
     @Override public void glDeleteQueries(int query) { }
     @Override public void glBeginQuery(int target, int id) {
         ensureQueryCapacity(id);
@@ -183,29 +240,42 @@ public final class SDLGPULWJGLService extends LWJGLService {
 
     @Override public int setupDebugCallback(DebugMessageHandler handler) { return 0; }
     @Override public void disableDebugCallback() { }
-    @Override public void glObjectLabel(int identifier, int name, CharSequence label) { BackendManager.RENDER_BACKEND.objectLabel(identifier, name, label); }
-    @Override public void glPushDebugGroup(int source, int id, CharSequence message) { BackendManager.RENDER_BACKEND.pushDebugGroup(source, id, message); }
-    @Override public void glPopDebugGroup() { BackendManager.RENDER_BACKEND.popDebugGroup(); }
-
-    @Override public int glGenTextures() { return BackendManager.RENDER_BACKEND.genTextures(); }
-    @Override public void glGenTextures(int[] textures) {
-        for (int i = 0; i < textures.length; i++) textures[i] = BackendManager.RENDER_BACKEND.genTextures();
+    @Override public void glObjectLabel(int identifier, int name, CharSequence label) {
+        GLStateManager.glObjectLabel(identifier, name, label);
     }
-    @Override public void glDeleteTextures(int texture) { BackendManager.RENDER_BACKEND.deleteTextures(texture); }
+    @Override public void glPushDebugGroup(int source, int id, CharSequence message) {
+        GLStateManager.glPushDebugGroup(source, id, message);
+    }
+    @Override public void glPopDebugGroup() { GLStateManager.glPopDebugGroup(); }
+
+    @Override public int glGenTextures() { return GLStateManager.glGenTextures(); }
+    @Override public void glGenTextures(int[] textures) {
+        for (int i = 0; i < textures.length; i++) textures[i] = GLStateManager.glGenTextures();
+    }
+    @Override public void glDeleteTextures(int texture) { GLStateManager.glDeleteTextures(texture); }
     @Override public void glDeleteTextures(int[] textures) {
-        for (int t : textures) BackendManager.RENDER_BACKEND.deleteTextures(t);
+        for (int t : textures) GLStateManager.glDeleteTextures(t);
     }
     @Override public void glBindTexture(int target, int texture) { GLStateManager.glBindTexture(target, texture); }
     @Override public void glActiveTexture(int texture) { GLStateManager.glActiveTexture(texture); }
-    @Override public int glGetTexLevelParameteri(int target, int level, int pname) { return BackendManager.RENDER_BACKEND.getTexLevelParameteri(target, level, pname); }
-    @Override public void glCopyTexSubImage2D(int target, int level, int xoffset, int yoffset, int x, int y, int width, int height) { BackendManager.RENDER_BACKEND.copyTexSubImage2D(target, level, xoffset, yoffset, x, y, width, height); }
-    @Override public void glPixelStorei(int pname, int param) { BackendManager.RENDER_BACKEND.pixelStorei(pname, param); }
+    @Override public int glGetTexLevelParameteri(int target, int level, int pname) {
+        return GLStateManager.glGetTexLevelParameteri(target, level, pname);
+    }
+    @Override public void glCopyTexSubImage2D(int target, int level, int xoffset, int yoffset, int x, int y, int width,
+                                              int height) {
+        GLStateManager.glCopyTexSubImage2D(target, level, xoffset, yoffset, x, y, width, height);
+    }
+    @Override public void glPixelStorei(int pname, int param) { GLStateManager.glPixelStorei(pname, param); }
 
-    @Override public int glGenFramebuffers() { return BackendManager.RENDER_BACKEND.genFramebuffers(); }
-    @Override public void glDeleteFramebuffers(int framebuffer) { BackendManager.RENDER_BACKEND.deleteFramebuffers(framebuffer); }
+    @Override public int glGenFramebuffers() { return GLStateManager.glGenFramebuffers(); }
+    @Override public void glDeleteFramebuffers(int framebuffer) { GLStateManager.glDeleteFramebuffers(framebuffer); }
     @Override public void glBindFramebuffer(int target, int framebuffer) { GLStateManager.glBindFramebuffer(target, framebuffer); }
-    @Override public int glCheckFramebufferStatus(int target) { return BackendManager.RENDER_BACKEND.checkFramebufferStatus(target); }
-    @Override public void glFramebufferTexture2D(int target, int attachment, int textarget, int texture, int level) { BackendManager.RENDER_BACKEND.framebufferTexture2D(target, attachment, textarget, texture, level); }
+    @Override public int glCheckFramebufferStatus(int target) {
+        return GLStateManager.glCheckFramebufferStatus(target);
+    }
+    @Override public void glFramebufferTexture2D(int target, int attachment, int textarget, int texture, int level) {
+        GLStateManager.glFramebufferTexture2D(target, attachment, textarget, texture, level);
+    }
 
     @Override public void glEnable(int cap) { GLStateManager.glEnable(cap); }
     @Override public void glDisable(int cap) { GLStateManager.glDisable(cap); }
@@ -215,23 +285,26 @@ public final class SDLGPULWJGLService extends LWJGLService {
     @Override public void glDepthMask(boolean flag) { GLStateManager.glDepthMask(flag); }
     @Override public void glColorMask(boolean red, boolean green, boolean blue, boolean alpha) { GLStateManager.glColorMask(red, green, blue, alpha); }
     @Override public void glViewport(int x, int y, int width, int height) { GLStateManager.glViewport(x, y, width, height); }
-    @Override public void glClear(int mask) { BackendManager.RENDER_BACKEND.clear(mask); }
-    @Override public void glClearColor(float red, float green, float blue, float alpha) { BackendManager.RENDER_BACKEND.clearColor(red, green, blue, alpha); }
-    @Override public int glGetError() { return BackendManager.RENDER_BACKEND.getError(); }
-
-    @Override public void glMatrixMode(int mode) { /* Handled by GLSM FFP emulation */ }
-    @Override public void glLoadMatrixf(FloatBuffer m) { /* Handled by GLSM FFP emulation */ }
-
-    @Override public int glGetInteger(int pname) { return BackendManager.RENDER_BACKEND.getInteger(pname); }
-    @Override public void glGetIntegerv(int pname, int[] params) {
-        if (params.length > 0) params[0] = BackendManager.RENDER_BACKEND.getInteger(pname);
+    @Override public void glClear(int mask) { GLStateManager.glClear(mask); }
+    @Override public void glClearColor(float red, float green, float blue, float alpha) {
+        GLStateManager.glClearColor(red, green, blue, alpha);
+    }
+    @Override public int glGetError() { return GLStateManager.glGetError(); }
+
+    @Override public void glMatrixMode(int mode) { GLStateManager.glMatrixMode(mode); }
+    @Override public void glLoadMatrixf(FloatBuffer m) { GLStateManager.glLoadMatrix(m); }
+
+    @Override public int glGetInteger(int pname) { return GLStateManager.glGetInteger(pname); }
+    @Override public void glGetIntegerv(int pname, int[] params) { GLStateManager.glGetInteger(pname, params); }
+    @Override public boolean glGetBoolean(int pname) { return GLStateManager.glGetBoolean(pname); }
+    @Override public String glGetString(int pname) { return GLStateManager.glGetString(pname); }
+    @Override public int glGetAttribLocation(int program, CharSequence name) {
+        return GLStateManager.glGetAttribLocation(program, name);
     }
-    @Override public boolean glGetBoolean(int pname) { return BackendManager.RENDER_BACKEND.getBoolean(pname); }
-    @Override public String glGetString(int pname) { return BackendManager.RENDER_BACKEND.getString(pname); }
-    @Override public int glGetAttribLocation(int program, CharSequence name) { return BackendManager.RENDER_BACKEND.getAttribLocation(program, name); }
 
     @Override public MemoryStack stackPush() {
-        return new MemoryStackWrapper(org.lwjgl.system.MemoryStack.stackPush());
+        org.lwjgl.system.MemoryStack.stackPush();
+        return STACK.get();
     }
 
     @Override public long nmemAlloc(long size) { return MemoryUtil.nmemAlloc(size); }

sdl-gpu/src/main/java/com/gtnewhorizons/angelica/sdlgpu/device/Device.java

@@ -335,7 +335,7 @@ public final class Device {
             }
             vsyncMode = candidate;
             LOG.info("SDL present mode {} (preferred={}), refresh {}Hz, {}, video={}, framesInFlight={}, supported: vsync={} immediate={} mailbox={}",
-                candidate, preferred, getDisplayRefreshRateHz(),
+                candidate, preferred, RenderBackend.hzFromPeriod(getDisplayRefreshPeriodNanos()),
                 (SDL_GetWindowFlags(window) & SDL_WINDOW_FULLSCREEN) != 0 ? "fullscreen" : "windowed",
                 SDL_GetCurrentVideoDriver(), FRAMES_IN_FLIGHT,
                 supportsVSyncMode(VSyncMode.ON), supportsVSyncMode(VSyncMode.OFF), supportsVSyncMode(VSyncMode.MAILBOX));
@@ -376,13 +376,13 @@ public final class Device {
         };
     }
 
-    public int getDisplayRefreshRateHz() {
+    public long getDisplayRefreshPeriodNanos() {
         final long window = Display.getWindow();
         final int displayId = window == 0 ? SDL_GetPrimaryDisplay() : SDL_GetDisplayForWindow(window);
-        if (displayId == 0) return 0;
+        if (displayId == 0) return 0L;
         final SDL_DisplayMode mode = SDL_GetCurrentDisplayMode(displayId);
-        if (mode == null) return 0;
-        return RenderBackend.refreshHzFrom(mode.refresh_rate_numerator(), mode.refresh_rate_denominator(), mode.refresh_rate());
+        if (mode == null) return 0L;
+        return RenderBackend.periodFromRational(mode.refresh_rate_numerator(), mode.refresh_rate_denominator(), mode.refresh_rate());
     }
 
     public int getSwapchainTextureFormat() {

sdl-gpu/src/main/java/com/gtnewhorizons/angelica/sdlgpu/device/MemoryStackWrapper.java

@@ -1,6 +1,6 @@
 package com.gtnewhorizons.angelica.sdlgpu.device;
 
-import com.mitchej123.lwjgl.MemoryStack;
+import org.taumc.celeritas.lwjgl.MemoryStack;
 
 import java.nio.ByteBuffer;
 import java.nio.FloatBuffer;

sdl-gpu/src/main/java/com/gtnewhorizons/angelica/sdlgpu/frame/ContextState.java

@@ -54,6 +54,28 @@ public final class ContextState {
 
     public final PixelStoreState pixelStore = new PixelStoreState();
 
+    public static final class ProxyTextureState {
+        public int target;
+        public int width;
+        public int height;
+        public int depth;
+        public int internalFormat;
+
+        public void accept(int target, int width, int height, int depth, int internalFormat) {
+            this.target = target;
+            this.width = width;
+            this.height = height;
+            this.depth = depth;
+            this.internalFormat = internalFormat;
+        }
+
+        public void reject(int target) {
+            accept(target, 0, 0, 0, 0);
+        }
+    }
+
+    public final ProxyTextureState proxyTexture = new ProxyTextureState();
+
     public static final class VAOState {
         public final boolean[] attribEnabled = new boolean[MAX_VERTEX_ATTRIBS];
         public int attribEnabledMask;
@@ -211,6 +233,7 @@ public final class ContextState {
 
     public int boundArrayBuffer;
     public int boundIndirectBuffer;
+    public int boundDispatchIndirectBuffer;
     public int boundUniformBuffer;
     public int boundCopyReadBuffer;
     public int boundCopyWriteBuffer;
@@ -226,6 +249,7 @@ public final class ContextState {
             case GL30.GL_PIXEL_UNPACK_BUFFER -> boundPixelUnpackBuffer;
             case GL30.GL_PIXEL_PACK_BUFFER -> boundPixelPackBuffer;
             case GL40.GL_DRAW_INDIRECT_BUFFER -> boundIndirectBuffer;
+            case GL43.GL_DISPATCH_INDIRECT_BUFFER -> boundDispatchIndirectBuffer;
             case GL31.GL_COPY_READ_BUFFER -> boundCopyReadBuffer;
             case GL31.GL_COPY_WRITE_BUFFER -> boundCopyWriteBuffer;
             case GL43.GL_SHADER_STORAGE_BUFFER -> boundSSBO;

sdl-gpu/src/main/java/com/gtnewhorizons/angelica/sdlgpu/frame/FrameManager.java

@@ -1,8 +1,10 @@
 package com.gtnewhorizons.angelica.sdlgpu.frame;
 
 import com.gtnewhorizons.angelica.config.SystemProperties;
+import com.gtnewhorizons.angelica.glsm.backend.BackendManager;
 import com.gtnewhorizons.angelica.glsm.profiling.Tracy;
 import com.gtnewhorizons.angelica.sdlgpu.device.Device;
+import com.gtnewhorizons.angelica.sdlgpu.resource.FboState;
 import com.gtnewhorizons.angelica.sdlgpu.resource.ResourceManager;
 import com.gtnewhorizons.angelica.sdlgpu.util.MemoryAccess;
 import com.gtnewhorizons.angelica.sdlgpu.util.ThreadRegistry;
@@ -43,6 +45,7 @@ public final class FrameManager {
     private static final Tracy.ZoneId Z_SDL_SUBMIT = Tracy.zoneId("sdlSubmit", Tracy.COLOR_SWAP);
     private static final Tracy.ZoneId Z_SDL_ACQUIRE_WAIT = Tracy.zoneId("sdlAcquireWait", Tracy.COLOR_SWAP);
 
+    private static final Tracy.ZoneId Z_SDL_GPU_WAIT = Tracy.zoneId("sdlGpuWait", Tracy.COLOR_SWAP);
     private final Device device;
     private ResourceManager resourceManager;
 
@@ -83,8 +86,7 @@ public final class FrameManager {
         public int batchBreakSamplerThisFrame;
         public int stateAppliesThisFrame;
         public long acquireWaitNanosThisFrame;
-        public volatile long lastFrameGateNanos;
-        public volatile long lastFrameGateEndNanos;
+        public long gpuWaitNanosThisFrame;
         public int midFrameSubmitsThisFrame;
         public int mipGensThisFrame;
         public int mipGenSubmitsThisFrame;
@@ -597,6 +599,7 @@ public final class FrameManager {
         f.stateAppliesThisFrame = 0;
         f.acquireWaitNanosThisFrame = 0;
         f.mipGensThisFrame = 0;
+        f.gpuWaitNanosThisFrame = 0;
         f.mipGenSubmitsThisFrame = 0;
         f.uploadFlushSubmitsThisFrame = 0;
         f.blitsThisFrame = 0;
@@ -773,7 +776,10 @@ public final class FrameManager {
     }
 
     public int getSwapchainFormat() {
-        return device.getSwapchainTextureFormat();
+        if (device.getClaimedWindow() != 0L) return device.getSwapchainTextureFormat();
+        if (resourceManager == null || !finalTarget.isReady()) return 0;
+        final FboState fbo = resourceManager.getFbo(finalTarget.fboId());
+        return fbo != null ? fbo.getColorFormat() : 0;
     }
 
     public boolean isFrameActive() {
@@ -873,14 +879,6 @@ public final class FrameManager {
         registeredFrames.clear();
     }
 
-    public long lastFrameGateNanos() {
-        return frame().lastFrameGateNanos;
-    }
-
-    public long lastFrameGateEndNanos() {
-        return frame().lastFrameGateEndNanos;
-    }
-
     private volatile Presenter presenter;
 
     public void setPresenter(Presenter presenter) {
@@ -894,6 +892,7 @@ public final class FrameManager {
     }
 
     public void presentFinalTarget() {
+        if (BackendManager.RENDER_BACKEND.isPresentSuppressed()) return;
         if (!finalTarget.hasContent()) return;
         present(finalTarget.colorTexture(), finalTarget.width(), finalTarget.height(), SDL_FLIP_NONE, false);
     }
@@ -916,16 +915,13 @@ public final class FrameManager {
     }
 
     private final AtomicLong windowAcquireWaitNanos = new AtomicLong();
+    private final AtomicLong windowGpuWaitNanos = new AtomicLong();
     private final AtomicInteger windowPresentSkips = new AtomicInteger();
 
     private void drainWindowPresentCounters(FrameState f) {
         if (f == windowFrame) return;
-        final long acquire = windowAcquireWaitNanos.getAndSet(0L);
-        if (acquire != 0L) {
-            f.acquireWaitNanosThisFrame += acquire;
-            f.lastFrameGateNanos = windowFrame.lastFrameGateNanos;
-            f.lastFrameGateEndNanos = windowFrame.lastFrameGateEndNanos;
-        }
+        f.acquireWaitNanosThisFrame += windowAcquireWaitNanos.getAndSet(0L);
+        f.gpuWaitNanosThisFrame += windowGpuWaitNanos.getAndSet(0L);
         f.presentSkipsThisFrame += windowPresentSkips.getAndSet(0);
     }
 
@@ -934,6 +930,11 @@ public final class FrameManager {
         else f.acquireWaitNanosThisFrame += waitNanos;
     }
 
+    private void noteGpuWait(FrameState f, long waitNanos) {
+        if (f == windowFrame) windowGpuWaitNanos.addAndGet(waitNanos);
+        else f.gpuWaitNanosThisFrame += waitNanos;
+    }
+
     private void notePresentSkip(FrameState f) {
         if (f == windowFrame) windowPresentSkips.incrementAndGet();
         else f.presentSkipsThisFrame++;
@@ -962,13 +963,31 @@ public final class FrameManager {
         final int w;
         final int h;
         final boolean callOk;
+        final boolean swapchainReady;
+        Tracy.beginZone(Z_SDL_GPU_WAIT);
+        try {
+            swapchainReady = SDL_WaitForGPUSwapchain(device.getDevice(), window);
+        } finally {
+            Tracy.endZone();
+        }
+        final long t1 = System.nanoTime();
+        BackendManager.RENDER_BACKEND.recordGpuWait(t1 - t0);
+        noteGpuWait(f, t1 - t0);
+
+        if (!swapchainReady) {
+            SDL_CancelGPUCommandBuffer(cb);
+            f.swapchainUnavailable = true;
+            notePresentSkip(f);
+            return false;
+        }
+
         try (var stack = stackPush()) {
             final PointerBuffer pTexture = stack.pointers(0);
             final IntBuffer pWidth = stack.ints(0);
             final IntBuffer pHeight = stack.ints(0);
             Tracy.beginZone(Z_SDL_ACQUIRE_WAIT);
             try {
-                callOk = SDL_WaitAndAcquireGPUSwapchainTexture(cb, window, pTexture, pWidth, pHeight);
+                callOk = SDL_AcquireGPUSwapchainTexture(cb, window, pTexture, pWidth, pHeight);
             } finally {
                 Tracy.endZone();
             }
@@ -981,9 +1000,6 @@ public final class FrameManager {
             throw re;
         }
         final long tEnd = System.nanoTime();
-        f.lastFrameGateNanos = tEnd - t0;
-        f.lastFrameGateEndNanos = tEnd;
-        noteAcquireWait(f, tEnd - t0);
 
         if (!callOk || tex == 0) {
             SDL_CancelGPUCommandBuffer(cb);
@@ -992,6 +1008,9 @@ public final class FrameManager {
             return false;
         }
 
+        BackendManager.RENDER_BACKEND.recordGate(tEnd - t0, tEnd);
+        noteAcquireWait(f, tEnd - t1);
+
         try (MemoryStack stack = stackPush()) {
             final long info = stack.ncalloc(SDL_GPUBlitInfo.ALIGNOF, 1, SDL_GPUBlitInfo.SIZEOF);
             writeBlitRegion(info + SDL_GPUBlitInfo.SOURCE, srcTexture, srcW, srcH);

sdl-gpu/src/main/java/com/gtnewhorizons/angelica/sdlgpu/frame/Presenter.java

@@ -8,23 +8,34 @@ public final class Presenter {
     private final FrameManager frameManager;
     private final Executor windowThreadExecutor;
     private final Semaphore pending = new Semaphore(1);
+    private final Runnable task;
+
+    private long srcTexture;
+    private int srcW;
+    private int srcH;
+    private int flipMode;
 
     public Presenter(FrameManager frameManager, Executor windowThreadExecutor) {
         this.frameManager = frameManager;
         this.windowThreadExecutor = windowThreadExecutor;
+        this.task = () -> {
+            try {
+                frameManager.presentOnWindowThread(srcTexture, srcW, srcH, flipMode);
+            } finally {
+                pending.release();
+            }
+        };
     }
 
     public void requestPresent(long srcTexture, int srcW, int srcH, int flipMode) {
         pending.acquireUninterruptibly();
+        this.srcTexture = srcTexture;
+        this.srcW = srcW;
+        this.srcH = srcH;
+        this.flipMode = flipMode;
         boolean submitted = false;
         try {
-            windowThreadExecutor.execute(() -> {
-                try {
-                    frameManager.presentOnWindowThread(srcTexture, srcW, srcH, flipMode);
-                } finally {
-                    pending.release();
-                }
-            });
+            windowThreadExecutor.execute(task);
             submitted = true;
         } finally {
             if (!submitted) pending.release();

sdl-gpu/src/main/java/com/gtnewhorizons/angelica/sdlgpu/frame/SdlFramePlots.java

@@ -37,6 +37,7 @@ final class SdlFramePlots {
     private static final long PLOT_PER_PASS_BLOCK_FLUSHES = Tracy.plotHandle("sdl.perPassBlockFlushes");
     private static final long PLOT_PER_PASS_BLOCK_BYTES = Tracy.plotHandle("sdl.perPassBlockBytes", TracyBackend.PLOT_FORMAT_MEMORY);
     private static final long PLOT_ACQUIRE_WAIT_US = Tracy.plotHandle("sdl.acquireWaitUs");
+    private static final long PLOT_GPU_WAIT_US = Tracy.plotHandle("sdl.gpuWaitUs");
     private static final long PLOT_PRESENT_TO_PRESENT_US = Tracy.plotHandle("sdl.presentToPresentUs");
     private static final long PLOT_FRAMES_IN_FLIGHT = Tracy.plotHandle("sdl.framesInFlight");
     private static final long PLOT_MIP_GENS = Tracy.plotHandle("sdl.mipGens");
@@ -97,6 +98,7 @@ final class SdlFramePlots {
         Tracy.plotInt(PLOT_PER_PASS_BLOCK_FLUSHES, f.uniformBlockFlushesThisFrame[ShaderManager.BLOCK_PER_PASS]);
         Tracy.plotInt(PLOT_PER_PASS_BLOCK_BYTES, f.uniformBlockBytesThisFrame[ShaderManager.BLOCK_PER_PASS]);
         Tracy.plotInt(PLOT_ACQUIRE_WAIT_US, f.acquireWaitNanosThisFrame / 1000);
+        Tracy.plotInt(PLOT_GPU_WAIT_US, f.gpuWaitNanosThisFrame / 1000);
         final long nowNanos = System.nanoTime();
         if (f.lastEndFrameNanos != 0) Tracy.plotInt(PLOT_PRESENT_TO_PRESENT_US, (nowNanos - f.lastEndFrameNanos) / 1000);
         f.lastEndFrameNanos = nowNanos;

sdl-gpu/src/main/java/com/gtnewhorizons/angelica/sdlgpu/pipeline/DrawDispatch.java

@@ -131,7 +131,7 @@ public final class DrawDispatch {
         }
     }
 
-    public void drawTriangleFanAsTriangleList(ContextState st, int first, int count) {
+    public boolean drawTriangleFanAsTriangleList(ContextState st, int first, int count) {
         final int numTriangles = count - 2;
         final boolean use32bit = (first + count - 1) > 65535;
         final int bytesPerIndex = use32bit ? 4 : 2;
@@ -180,13 +180,14 @@ public final class DrawDispatch {
 
         setPrimitiveTypeForDraw(st, SDL_GPU_PRIMITIVETYPE_TRIANGLELIST);
         pipelineApplier.ensureRenderPass(st);
-        if (!frameManager.isRenderPassActive()) return;
-        if (!pipelineApplier.applyPipelineAndState(st)) return;
+        if (!frameManager.isRenderPassActive()) return false;
+        if (!pipelineApplier.applyPipelineAndState(st)) return false;
 
         final int elementSize = use32bit ? SDL_GPU_INDEXELEMENTSIZE_32BIT : SDL_GPU_INDEXELEMENTSIZE_16BIT;
         final long rp = frameManager.getRenderPass();
         bindIndexBufferIfChanged(st, rp, st.fanIndexBuffer, elementSize, uploadOffset);
         SDL_DrawGPUIndexedPrimitives(rp, numTriangles * 3, 1, 0, 0, 0);
+        return true;
     }
 
     private long createFanIndexBuffer(int capacity) {

sdl-gpu/src/main/java/com/gtnewhorizons/angelica/sdlgpu/pipeline/FFPTrace.java

@@ -0,0 +1,211 @@
+package com.gtnewhorizons.angelica.sdlgpu.pipeline;
+
+import com.gtnewhorizons.angelica.glsm.GLStateManager;
+import com.gtnewhorizons.angelica.glsm.ffp.FFPUniformBlock;
+import com.gtnewhorizons.angelica.sdlgpu.frame.ContextState;
+import com.gtnewhorizons.angelica.sdlgpu.frame.FrameManager;
+import com.gtnewhorizons.angelica.sdlgpu.resource.PersistentMapping;
+import com.gtnewhorizons.angelica.sdlgpu.resource.ResourceManager;
+import com.gtnewhorizons.angelica.sdlgpu.shader.ShaderManager;
+import it.unimi.dsi.fastutil.longs.LongOpenHashSet;
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
+import org.lwjgl.system.MemoryUtil;
+
+import java.nio.ByteBuffer;
+
+public final class FFPTrace {
+    private static final Logger LOG = LogManager.getLogger("Angelica-SDLGPU");
+    private static final String PREFIX = "[FFPTrace] ";
+    private static final int MAX_KEYS = 512;
+
+    private final ResourceManager resourceManager;
+    private final LongOpenHashSet seenKeys = new LongOpenHashSet();
+    private final StringBuilder sb = new StringBuilder(1024);
+    private int drawsThisFrame;
+    private boolean capReported;
+
+    public FFPTrace(ResourceManager resourceManager) {
+        this.resourceManager = resourceManager;
+    }
+
+    public synchronized void trace(ContextState st, String kind, int mode, int count, int indexType, int first, int baseVertex) {
+        drawsThisFrame++;
+        final long key = key(st);
+        if (seenKeys.contains(key)) return;
+        if (seenKeys.size() >= MAX_KEYS) {
+            if (!capReported) {
+                capReported = true;
+                LOG.info("{}key cap {} reached; no further distinct draw states will be logged", PREFIX, MAX_KEYS);
+            }
+            return;
+        }
+        seenKeys.add(key);
+        LOG.info(format(st, kind, mode, count, indexType, first, baseVertex));
+    }
+
+    public synchronized void frameEnd(FrameManager.FrameState f) {
+        LOG.info("{}frame {} end: draws={} dropped={}", PREFIX, f.frameNumber, drawsThisFrame, f.droppedDrawsThisFrame);
+        drawsThisFrame = 0;
+    }
+
+    private long key(ContextState st) {
+        final PipelineCache p = st.pipeline;
+        long h = p.lastKey();
+        h = Hashing.fmix64(h, st.boundFboId);
+        h = Hashing.fmix64(h, Hashing.packHiLo(st.boundTextures[0], st.boundTextures[1]));
+        h = Hashing.fmix64(h, Hashing.packHiLo(st.scissorEnabled ? 1 : 0, 0));
+        h = Hashing.fmix64(h, Hashing.packHiLo(Float.floatToRawIntBits(st.viewportX), Float.floatToRawIntBits(st.viewportY)));
+        h = Hashing.fmix64(h, Hashing.packHiLo(Float.floatToRawIntBits(st.viewportW), Float.floatToRawIntBits(st.viewportH)));
+        h = Hashing.fmix64(h, Hashing.packHiLo(st.scissorX, st.scissorY));
+        h = Hashing.fmix64(h, Hashing.packHiLo(st.scissorW, st.scissorH));
+        return h;
+    }
+
+    private String format(ContextState st, String kind, int mode, int count, int indexType, int first, int baseVertex) {
+        final PipelineCache p = st.pipeline;
+        final ContextState.VAOState vao = st.currentVao;
+        final ShaderManager.ProgramObject prog = st.boundProgramObj;
+        sb.setLength(0);
+        sb.append(PREFIX);
+        sb.append("kind=").append(kind);
+        sb.append(" mode=0x").append(Integer.toHexString(mode));
+        sb.append(" count=").append(count);
+        if (indexType != 0) sb.append(" indexType=0x").append(Integer.toHexString(indexType));
+        sb.append(" first=").append(first).append(" baseVertex=").append(baseVertex);
+
+        sb.append(" | prog=").append(st.boundProgram);
+        if (prog == null) {
+            sb.append(" progObj=null");
+        } else {
+            sb.append(" ffpUboBinding=").append(prog.externalUboBinding);
+            sb.append(" fragSamplers=").append(prog.fragmentSamplerNames);
+            sb.append(" vsInputs=[");
+            boolean firstName = true;
+            for (int i = 0; i < prog.vertexInputName.length; i++) {
+                final String n = prog.vertexInputName[i];
+                if (n == null) continue;
+                if (!firstName) sb.append(',');
+                firstName = false;
+                sb.append(i).append(':').append(n);
+            }
+            sb.append(']');
+        }
+
+        sb.append(" | fbo=").append(st.boundFboId);
+        sb.append(" vp=(").append(st.viewportX).append(',').append(st.viewportY).append(',')
+            .append(st.viewportW).append(',').append(st.viewportH).append(')');
+        sb.append(" scissor=").append(st.scissorEnabled);
+        if (st.scissorEnabled) {
+            sb.append('(').append(st.scissorX).append(',').append(st.scissorY).append(',')
+                .append(st.scissorW).append(',').append(st.scissorH).append(')');
+        }
+        sb.append(" cull=").append(p.cullEnabled).append("/mode=").append(p.cullFaceMode)
+            .append("/front=").append(p.frontFace).append("/all=").append(p.cullAll);
+        sb.append(" depth=").append(p.depthTestEnabled).append("/func=").append(p.depthCompareOp)
+            .append("/write=").append(p.depthWriteEnabled);
+        sb.append(" blend=").append(p.blendEnabledPerDrawBuffer[0])
+            .append("/src=").append(p.srcColorFactors[0]).append("/dst=").append(p.dstColorFactors[0])
+            .append("/srcA=").append(p.srcAlphaFactors[0]).append("/dstA=").append(p.dstAlphaFactors[0])
+            .append("/op=").append(p.colorBlendOp).append('/').append(p.alphaBlendOp);
+        sb.append(" colorMask=0x").append(Integer.toHexString(p.colorWriteMask));
+        sb.append(" primitiveType=").append(p.primitiveType);
+
+        appendTextureUnit(st, 0);
+        appendTextureUnit(st, 1);
+
+        sb.append(" | attribs=[");
+        int enabled = vao.attribEnabledMask;
+        boolean firstAttrib = true;
+        while (enabled != 0) {
+            final int i = Integer.numberOfTrailingZeros(enabled);
+            enabled &= enabled - 1;
+            final int b = vao.attribBinding[i];
+            if (!firstAttrib) sb.append(' ');
+            firstAttrib = false;
+            sb.append(i).append(":size=").append(vao.attribSize[i])
+                .append(",type=0x").append(Integer.toHexString(vao.attribType[i]))
+                .append(",norm=").append(vao.attribNormalized[i])
+                .append(",int=").append(vao.attribIsInteger[i])
+                .append(",stride=").append(vao.attribStride[i])
+                .append(",off=").append(vao.attribOffset[i])
+                .append(",buf=").append(vao.bindingBuffer[b])
+                .append(",bufOff=").append(vao.bindingOffset[b]);
+        }
+        sb.append("] enabledMask=0x").append(Integer.toHexString(vao.attribEnabledMask))
+            .append(" shaderInputMask=0x").append(Integer.toHexString(p.shaderInputMask))
+            .append(" ebo=").append(vao.elementBuffer);
+
+        appendFfpUniforms(st, prog);
+        return sb.toString();
+    }
+
+    private void appendTextureUnit(ContextState st, int unit) {
+        final int id = st.boundTextures[unit];
+        sb.append(" | tex").append(unit).append("=").append(id);
+        if (id != 0) {
+            sb.append(" handle=").append(resourceManager.getTextureHandle(id) != 0);
+            final ResourceManager.TextureMeta meta = resourceManager.getTextureMeta(id);
+            if (meta == null) {
+                sb.append(" meta=null");
+            } else {
+                sb.append(" size=").append(meta.width()).append('x').append(meta.height())
+                    .append(" levels=").append(meta.levels())
+                    .append(" sdlFormat=").append(meta.sdlFormat())
+                    .append(" glFormat=0x").append(Integer.toHexString(meta.glFormat()));
+            }
+        }
+        sb.append(" ffpEnabled=").append(GLStateManager.getTextures().getTextureUnitStates(unit).isEnabled());
+    }
+
+    private void appendFfpUniforms(ContextState st, ShaderManager.ProgramObject prog) {
+        if (prog == null) return;
+        final int binding = prog.externalUboBinding;
+        if (binding < 0 || binding >= ContextState.MAX_INDEXED_BUFFERS) return;
+        final int glId = st.boundUboByIndex[binding];
+        if (glId == 0) {
+            sb.append(" | ffpUbo=unbound");
+            return;
+        }
+        final PersistentMapping pm = resourceManager.getPersistentMapping(glId);
+        final ByteBuffer buf = pm != null ? pm.staging : resourceManager.getUboShadow(glId);
+        if (buf == null) {
+            sb.append(" | ffpUbo=buffer").append(glId).append(" noStaging");
+            return;
+        }
+        final int base = st.uboRangeOffset[binding];
+        sb.append(" | ffpUbo=buffer").append(glId).append(" base=").append(base);
+        appendUboFloat(buf, base, FFPUniformBlock.ALPHA_REF, " u_AlphaRef=");
+        appendUboMatrix(buf, base, FFPUniformBlock.MVP_MATRIX, " u_MVPMatrix=");
+        appendUboMatrix(buf, base, FFPUniformBlock.LIGHTMAP_TEXTURE_MATRIX, " u_LightmapTextureMatrix=");
+    }
+
+    private static float floatIgnoringLimit(ByteBuffer buf, int at) {
+        return MemoryUtil.memGetFloat(MemoryUtil.memAddress0(buf) + at);
+    }
+
+    private void appendUboFloat(ByteBuffer buf, int base, int memberOffset, String label) {
+        final int at = base + memberOffset;
+        sb.append(label);
+        if (at < 0 || at + 4 > buf.capacity()) {
+            sb.append("oob");
+            return;
+        }
+        sb.append(floatIgnoringLimit(buf, at));
+    }
+
+    private void appendUboMatrix(ByteBuffer buf, int base, int memberOffset, String label) {
+        final int at = base + memberOffset;
+        sb.append(label);
+        if (at < 0 || at + 64 > buf.capacity()) {
+            sb.append("oob");
+            return;
+        }
+        sb.append('[');
+        for (int i = 0; i < 16; i++) {
+            if (i > 0) sb.append(',');
+            sb.append(floatIgnoringLimit(buf, at + i * 4));
+        }
+        sb.append(']');
+    }
+}

sdl-gpu/src/main/java/com/gtnewhorizons/angelica/sdlgpu/pipeline/PipelineApplier.java

@@ -337,6 +337,11 @@ public final class PipelineApplier {
         st.ringChunkUsedBlocks = 0;
     }
 
+    private int fbo0Height(ContextState st) {
+        final int h = frameManager.getFbo0Height();
+        return h > 0 ? h : (int) (st.viewportY + st.viewportH);
+    }
+
     public boolean applyPipelineAndState(ContextState st) {
         return applyPipelineAndState(st, frameManager.frame());
     }
@@ -435,11 +440,14 @@ public final class PipelineApplier {
         }
 
         if (st.viewportDirty) {
-            float vpY = st.viewportY;
-            float vpH = st.viewportH;
+            final float vpY;
+            final float vpH;
             if (renderingToFbo) {
                 vpY = st.viewportY + st.viewportH;
                 vpH = -st.viewportH;
+            } else {
+                vpY = fbo0Height(st) - st.viewportY - st.viewportH;
+                vpH = st.viewportH;
             }
             final long addr = st.cachedViewport.address();
             MemoryAccess.putFloat(addr + SDL_GPUViewport.X, st.viewportX);
@@ -455,15 +463,9 @@ public final class PipelineApplier {
         if (st.scissorDirty) {
             final long addr = st.cachedScissor.address();
             final int sx, sy, sw, sh;
-            final int fbHeight;
             if (st.scissorEnabled) {
-                if (renderingToFbo) {
-                    fbHeight = (fboState != null && fboState.height > 0) ? fboState.height : (int)(st.viewportY + st.viewportH);
-                } else {
-                    fbHeight = (int)(st.viewportY + st.viewportH);
-                }
                 sx = st.scissorX;
-                sy = fbHeight - st.scissorY - st.scissorH;
+                sy = renderingToFbo ? st.scissorY : (fbo0Height(st) - st.scissorY - st.scissorH);
                 sw = st.scissorW;
                 sh = st.scissorH;
                 MemoryAccess.putInt(addr + SDL_Rect.X, sx);
@@ -471,11 +473,12 @@ public final class PipelineApplier {
                 MemoryAccess.putInt(addr + SDL_Rect.W, sw);
                 MemoryAccess.putInt(addr + SDL_Rect.H, sh);
                 if ((sw <= 0 || sh <= 0) && bogusScissorWarned.add(Hashing.packHiLo(sw, sh))) {
-                    LOG.warn("applyPipelineAndState: scissor degenerate (x={} y={} w={} h={}) - all fragments clipped; boundProgram={} boundFbo={} fbHeight={} scissorEn={} src=[{},{},{},{}]", sx, sy, sw, sh, st.boundProgram, st.boundFboId, fbHeight, st.scissorEnabled, st.scissorX, st.scissorY, st.scissorW, st.scissorH);
+                    LOG.warn("applyPipelineAndState: scissor degenerate (x={} y={} w={} h={}) - all fragments clipped; boundProgram={} boundFbo={} scissorEn={} src=[{},{},{},{}]", sx, sy, sw, sh, st.boundProgram, st.boundFboId, st.scissorEnabled, st.scissorX, st.scissorY, st.scissorW, st.scissorH);
                 }
             } else {
+                final int rectY = renderingToFbo ? (int) st.viewportY : (int) (fbo0Height(st) - st.viewportY - st.viewportH);
                 MemoryAccess.putInt(addr + SDL_Rect.X, (int) st.viewportX);
-                MemoryAccess.putInt(addr + SDL_Rect.Y, (int) st.viewportY);
+                MemoryAccess.putInt(addr + SDL_Rect.Y, rectY);
                 MemoryAccess.putInt(addr + SDL_Rect.W, (int) st.viewportW);
                 MemoryAccess.putInt(addr + SDL_Rect.H, (int) st.viewportH);
             }
@@ -674,10 +677,9 @@ public final class PipelineApplier {
 
     public float[] reuseOrAlloc(ContextState st, int location, int length) {
         final ShaderManager.ProgramObject prog = st.boundProgramObj;
-        if (prog != null && location >= 0 && location < prog.uniformSlotCount) {
-            final float[] existing = st.uniformStaging(prog).uniformDataBySlot[location];
-            if (existing != null && existing.length == length) return existing;
-        }
+        if (prog == null || location < 0 || location >= prog.uniformSlotCount) return null;
+        final float[] existing = st.uniformStaging(prog).uniformDataBySlot[location];
+        if (existing != null && existing.length == length) return existing;
         return new float[length];
     }
 
@@ -825,11 +827,13 @@ public final class PipelineApplier {
         final int count = n / floatsPerMatrix;
         if (count == 0) {
             final float[] v = reuseOrAlloc(st, location, n);
+            if (v == null) return;
             value.get(value.position(), v);
             putUniform(st, location, v);
             return;
         }
         final float[] out = reuseOrAlloc(st, location, count * floatsPerMatrix);
+        if (out == null) return;
         MatrixMarshal.marshalMatrixToColumnMajor(value, value.position(), count, size, transpose, out, 0);
         putUniform(st, location, out);
     }

sdl-gpu/src/main/java/com/gtnewhorizons/angelica/sdlgpu/pipeline/PipelineCache.java

@@ -59,11 +59,11 @@ public final class PipelineCache {
 
     public int primitiveType = SDL_GPU_PRIMITIVETYPE_TRIANGLELIST;
 
-    public final boolean[] blendEnabledPerAttachment = new boolean[ContextState.MAX_COLOR_ATTACHMENTS];
-    public int srcColorFactor = SDL_GPU_BLENDFACTOR_ONE;
-    public int dstColorFactor = SDL_GPU_BLENDFACTOR_ZERO;
-    public int srcAlphaFactor = SDL_GPU_BLENDFACTOR_ONE;
-    public int dstAlphaFactor = SDL_GPU_BLENDFACTOR_ZERO;
+    public final boolean[] blendEnabledPerDrawBuffer = new boolean[ContextState.MAX_COLOR_ATTACHMENTS];
+    public final int[] srcColorFactors = new int[ContextState.MAX_COLOR_ATTACHMENTS];
+    public final int[] dstColorFactors = new int[ContextState.MAX_COLOR_ATTACHMENTS];
+    public final int[] srcAlphaFactors = new int[ContextState.MAX_COLOR_ATTACHMENTS];
+    public final int[] dstAlphaFactors = new int[ContextState.MAX_COLOR_ATTACHMENTS];
     public int colorBlendOp = SDL_GPU_BLENDOP_ADD;
     public int alphaBlendOp = SDL_GPU_BLENDOP_ADD;
 
@@ -160,15 +160,35 @@ public final class PipelineCache {
         return true;
     }
 
-    private int attachmentForSlot(int slot) {
-        final int[] db = drawBuffers;
-        if (db == null || slot < 0 || slot >= db.length) return 0;
-        final int idx = db[slot];
-        return (idx >= 0 && idx < ContextState.MAX_COLOR_ATTACHMENTS) ? idx : 0;
+    private boolean blendEnabledForSlot(int slot) {
+        return slot >= 0 && slot < ContextState.MAX_COLOR_ATTACHMENTS && blendEnabledPerDrawBuffer[slot];
     }
 
-    private boolean blendEnabledForSlot(int slot) {
-        return blendEnabledPerAttachment[attachmentForSlot(slot)];
+    public boolean setBlendFactors(int sc, int dc, int sa, int da) {
+        boolean changed = false;
+        for (int i = 0; i < ContextState.MAX_COLOR_ATTACHMENTS; i++) {
+            if (srcColorFactors[i] != sc || dstColorFactors[i] != dc || srcAlphaFactors[i] != sa || dstAlphaFactors[i] != da) {
+                srcColorFactors[i] = sc;
+                dstColorFactors[i] = dc;
+                srcAlphaFactors[i] = sa;
+                dstAlphaFactors[i] = da;
+                changed = true;
+            }
+        }
+        if (changed) markOutputDirty();
+        return changed;
+    }
+
+    public boolean setBlendFactors(int drawBuffer, int sc, int dc, int sa, int da) {
+        if (srcColorFactors[drawBuffer] == sc && dstColorFactors[drawBuffer] == dc && srcAlphaFactors[drawBuffer] == sa && dstAlphaFactors[drawBuffer] == da) {
+            return false;
+        }
+        srcColorFactors[drawBuffer] = sc;
+        dstColorFactors[drawBuffer] = dc;
+        srcAlphaFactors[drawBuffer] = sa;
+        dstAlphaFactors[drawBuffer] = da;
+        markOutputDirty();
+        return true;
     }
 
     public int maxAttribs;
@@ -183,6 +203,14 @@ public final class PipelineCache {
 
     public PipelineCache() {
         this.maxAttribs = ContextState.MAX_VERTEX_ATTRIBS;
+        Arrays.fill(srcColorFactors, SDL_GPU_BLENDFACTOR_ONE);
+        Arrays.fill(dstColorFactors, SDL_GPU_BLENDFACTOR_ZERO);
+        Arrays.fill(srcAlphaFactors, SDL_GPU_BLENDFACTOR_ONE);
+        Arrays.fill(dstAlphaFactors, SDL_GPU_BLENDFACTOR_ZERO);
+    }
+
+    long lastKey() {
+        return lastKey;
     }
 
     public void markInputDirty()  { inputDirty  = true; lastKey = 0L; }
@@ -195,6 +223,16 @@ public final class PipelineCache {
         return true;
     }
 
+    public void setVertexInputs(int mask, int[] vecSize, int[] baseType, String[] names) {
+        if (shaderInputMask != mask || !Arrays.equals(shaderInputVecSize, vecSize) || !Arrays.equals(shaderInputBaseType, baseType)) {
+            markInputDirty();
+        }
+        shaderInputMask = mask;
+        shaderInputVecSize = vecSize;
+        shaderInputBaseType = baseType;
+        shaderInputName = names;
+    }
+
     public void markOutputDirty() { outputDirty = true; lastKey = 0L; }
     public void markShaderDirty() { shaderDirty = true; lastKey = 0L; }
 
@@ -292,9 +330,11 @@ public final class PipelineCache {
             | (((long) blendBits & 0xFFFFFFFFL) << 32);
         long h = OUTPUT_SEED;
         h = Hashing.fmix64(h, bits);
-        h = Hashing.fmix64(h, Hashing.packHiLo(primitiveType, srcColorFactor));
-        h = Hashing.fmix64(h, Hashing.packHiLo(dstColorFactor, srcAlphaFactor));
-        h = Hashing.fmix64(h, Hashing.packHiLo(dstAlphaFactor, colorBlendOp));
+        h = Hashing.fmix64(h, Hashing.packHiLo(primitiveType, colorBlendOp));
+        for (int i = 0; i < ctfLen; i++) {
+            h = Hashing.fmix64(h, Hashing.packHiLo(srcColorFactors[i], dstColorFactors[i]));
+            h = Hashing.fmix64(h, Hashing.packHiLo(srcAlphaFactors[i], dstAlphaFactors[i]));
+        }
         h = Hashing.fmix64(h, Hashing.packHiLo(alphaBlendOp, depthCompareOp));
         h = Hashing.fmix64(h, Hashing.packHiLo(stencilFrontCompareOp, stencilFrontFailOp));
         h = Hashing.fmix64(h, Hashing.packHiLo(stencilFrontDepthFailOp, stencilFrontPassOp));
@@ -386,11 +426,11 @@ public final class PipelineCache {
                 desc.format(colorTargetFormats()[i]);
                 desc.blend_state()
                     .enable_blend(blendEnabledForSlot(i))
-                    .src_color_blendfactor(srcColorFactor)
-                    .dst_color_blendfactor(dstColorFactor)
+                    .src_color_blendfactor(srcColorFactors[i])
+                    .dst_color_blendfactor(dstColorFactors[i])
                     .color_blend_op(colorBlendOp)
-                    .src_alpha_blendfactor(srcAlphaFactor)
-                    .dst_alpha_blendfactor(dstAlphaFactor)
+                    .src_alpha_blendfactor(srcAlphaFactors[i])
+                    .dst_alpha_blendfactor(dstAlphaFactors[i])
                     .alpha_blend_op(alphaBlendOp)
                     .color_write_mask((byte) colorWriteMask)
                     .enable_color_write_mask(true);
@@ -500,8 +540,10 @@ public final class PipelineCache {
               .append(" backCmp=").append(stencilBackCompareOp).append('\n');
         }
         sb.append("  Blend: enabled=").append(blendEnabledForSlot(0))
-          .append(" srcColor=").append(srcColorFactor).append(" dstColor=").append(dstColorFactor).append(" colorOp=").append(colorBlendOp)
-          .append(" srcAlpha=").append(srcAlphaFactor).append(" dstAlpha=").append(dstAlphaFactor).append(" alphaOp=").append(alphaBlendOp)
+          .append(" srcColor=").append(srcColorFactors[0]).append(" dstColor=").append(dstColorFactors[0])
+          .append(" colorOp=").append(colorBlendOp)
+          .append(" srcAlpha=").append(srcAlphaFactors[0]).append(" dstAlpha=").append(dstAlphaFactors[0])
+          .append(" alphaOp=").append(alphaBlendOp)
           .append(" mask=0x").append(Integer.toHexString(colorWriteMask)).append('\n');
         sb.append("  Rasterizer: cull=").append(getEffectiveCullMode())
           .append(" front=").append(effectiveFrontFace())

sdl-gpu/src/main/java/com/gtnewhorizons/angelica/sdlgpu/resource/CopyRectClip.java

@@ -0,0 +1,71 @@
+package com.gtnewhorizons.angelica.sdlgpu.resource;
+
+public final class CopyRectClip {
+
+    public static final long EMPTY = 0L;
+
+    private static final long FIELD_MASK = 0xFFFFL;
+
+    private CopyRectClip() {}
+
+    public static long clipCopyRect(int srcX, int srcY, int dstX, int dstY, int width, int height,
+        int srcWidth, int srcHeight, int dstWidth, int dstHeight) {
+        int sx = srcX;
+        int sy = srcY;
+        int dx = dstX;
+        int dy = dstY;
+        int w = width;
+        int h = height;
+        if (sx < 0) {
+            w += sx;
+            dx -= sx;
+            sx = 0;
+        }
+        if (sy < 0) {
+            h += sy;
+            dy -= sy;
+            sy = 0;
+        }
+        if (dx < 0) {
+            w += dx;
+            sx -= dx;
+            dx = 0;
+        }
+        if (dy < 0) {
+            h += dy;
+            sy -= dy;
+            dy = 0;
+        }
+        if (srcWidth > 0 && sx + w > srcWidth) w = srcWidth - sx;
+        if (srcHeight > 0 && sy + h > srcHeight) h = srcHeight - sy;
+        if (dstWidth > 0 && dx + w > dstWidth) w = dstWidth - dx;
+        if (dstHeight > 0 && dy + h > dstHeight) h = dstHeight - dy;
+        if (w <= 0 || h <= 0) return EMPTY;
+        if ((sx | sy | w | h) > FIELD_MASK) return EMPTY;
+        return (sx & FIELD_MASK) | ((sy & FIELD_MASK) << 16) | ((w & FIELD_MASK) << 32) | ((h & FIELD_MASK) << 48);
+    }
+
+    public static int srcX(long clip) {
+        return (int) (clip & FIELD_MASK);
+    }
+
+    public static int srcY(long clip) {
+        return (int) ((clip >>> 16) & FIELD_MASK);
+    }
+
+    public static int width(long clip) {
+        return (int) ((clip >>> 32) & FIELD_MASK);
+    }
+
+    public static int height(long clip) {
+        return (int) ((clip >>> 48) & FIELD_MASK);
+    }
+
+    public static int dstX(long clip, int origSrcX, int origDstX) {
+        return origDstX + (srcX(clip) - origSrcX);
+    }
+
+    public static int dstY(long clip, int origSrcY, int origDstY) {
+        return origDstY + (srcY(clip) - origSrcY);
+    }
+}

sdl-gpu/src/main/java/com/gtnewhorizons/angelica/sdlgpu/resource/FBOClearTracker.java

@@ -242,6 +242,12 @@ public final class FBOClearTracker {
         return true;
     }
 
+    public void resolveDestinationForWrite(ContextState st, long destTex, ResourceManager.TextureMeta destMeta, int level, int dx, int dy, int dz, int w, int h) {
+        if (dz != 0 || !discardPendingClearIfFullyCovered(st, destTex, dx, dy, level, w, h, destMeta)) {
+            materializePendingClearForTexture(st, destTex);
+        }
+    }
+
     public void materializePendingClearForTexture(ContextState st, long handle) {
         if (handle == 0) return;
         final boolean depthPending = st.pendingDepthTextures.remove(handle);

sdl-gpu/src/main/java/com/gtnewhorizons/angelica/sdlgpu/resource/PixelOps.java

@@ -13,6 +13,12 @@ import static org.lwjgl.sdl.SDLGPU.*;
 public final class PixelOps {
     private PixelOps() {}
 
+    public static int mipLevelSize(int base, int level) {
+        if (base <= 0 || level < 0) return 0;
+        if (level >= Integer.SIZE - 1) return 1;
+        return Math.max(1, base >> level);
+    }
+
     public static int defaultMipLevels(int width, int height) {
         final int max = Math.max(1, Math.max(width, height));
         return Math.max(1, 32 - Integer.numberOfLeadingZeros(max));

sdl-gpu/src/main/java/com/gtnewhorizons/angelica/sdlgpu/resource/ReadbackShadows.java

@@ -1,8 +1,9 @@
 package com.gtnewhorizons.angelica.sdlgpu.resource;
 
 import com.gtnewhorizons.angelica.sdlgpu.device.Device;
+import it.unimi.dsi.fastutil.longs.Long2ObjectMap;
 import it.unimi.dsi.fastutil.longs.Long2ObjectOpenHashMap;
-import it.unimi.dsi.fastutil.longs.LongArrayList;
+import it.unimi.dsi.fastutil.objects.ObjectIterator;
 import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
 import org.lwjgl.sdl.SDLError;
@@ -86,13 +87,14 @@ public final class ReadbackShadows {
     }
 
     public void release(int glId) {
-        final LongArrayList doomed = new LongArrayList();
-        for (long k : slots.keySet()) {
-            if ((int) (k >>> 32) == glId) doomed.add(k);
-        }
-        for (int i = 0; i < doomed.size(); i++) {
-            final Slot slot = slots.remove(doomed.getLong(i));
-            if (slot != null) releaseSlot(slot);
+        if (slots.isEmpty()) return;
+        final ObjectIterator<Long2ObjectMap.Entry<Slot>> it = slots.long2ObjectEntrySet().fastIterator();
+        while (it.hasNext()) {
+            final Long2ObjectMap.Entry<Slot> entry = it.next();
+            if ((int) (entry.getLongKey() >>> 32) == glId) {
+                releaseSlot(entry.getValue());
+                it.remove();
+            }
         }
     }
 

sdl-gpu/src/main/java/com/gtnewhorizons/angelica/sdlgpu/resource/ResourceManager.java

@@ -2208,7 +2208,24 @@ public final class ResourceManager {
         return mapTextureFormat(glFormat, preferredD24, preferredD24S8);
     }
 
+    public boolean isMappableTextureFormat(int glFormat) {
+        return lookupTextureFormat(glFormat, preferredD24, preferredD24S8) != SDL_GPU_TEXTUREFORMAT_INVALID;
+    }
+
     public static int mapTextureFormat(int glFormat, int preferredD24, int preferredD24S8) {
+        final int mapped = lookupTextureFormat(glFormat, preferredD24, preferredD24S8);
+        if (mapped != SDL_GPU_TEXTUREFORMAT_INVALID) return mapped;
+        synchronized (UNMAPPED_TEXTURE_FORMAT_SEEN) {
+            if (UNMAPPED_TEXTURE_FORMAT_SEEN.add(glFormat)) {
+                LOG.warn("Unmapped GL texture format: 0x{}", Integer.toHexString(glFormat));
+            }
+        }
+        return SDL_GPU_TEXTUREFORMAT_R8G8B8A8_UNORM;
+    }
+
+    private static final IntOpenHashSet UNMAPPED_TEXTURE_FORMAT_SEEN = new IntOpenHashSet();
+
+    private static int lookupTextureFormat(int glFormat, int preferredD24, int preferredD24S8) {
         return switch (glFormat) {
             case GL11.GL_RGBA, GL11.GL_RGBA8 -> SDL_GPU_TEXTUREFORMAT_R8G8B8A8_UNORM;
             case GL11.GL_RGB, GL11.GL_RGB8 -> SDL_GPU_TEXTUREFORMAT_R8G8B8A8_UNORM; // RGB -> RGBA promotion
@@ -2262,10 +2279,7 @@ public final class ResourceManager {
             case GL31.GL_RGBA8_SNORM -> SDL_GPU_TEXTUREFORMAT_R8G8B8A8_SNORM;
             case GL31.GL_RGBA16_SNORM -> SDL_GPU_TEXTUREFORMAT_R16G16B16A16_SNORM;
             case GL31.GL_RGB16_SNORM -> SDL_GPU_TEXTUREFORMAT_R16G16B16A16_SNORM; // RGB SNORM -> RGBA SNORM promotion
-            default -> {
-                LOG.warn("Unmapped GL texture format: 0x{}", Integer.toHexString(glFormat));
-                yield SDL_GPU_TEXTUREFORMAT_R8G8B8A8_UNORM;
-            }
+            default -> SDL_GPU_TEXTUREFORMAT_INVALID;
         };
     }
 

sdl-gpu/src/main/java/com/gtnewhorizons/angelica/sdlgpu/resource/TextureOps.java

@@ -19,6 +19,8 @@ import org.lwjgl.system.MemoryUtil;
 import java.nio.ByteBuffer;
 
 import static org.lwjgl.sdl.SDLGPU.*;
+import static org.lwjgl.sdl.SDLSurface.SDL_FLIP_NONE;
+import static org.lwjgl.sdl.SDLSurface.SDL_FLIP_VERTICAL;
 
 public final class TextureOps {
     private static final Logger LOG = LogManager.getLogger("Angelica-SDLGPU");
@@ -99,9 +101,9 @@ public final class TextureOps {
         st.samplerBindGen++;
     }
 
+    /// requires a flush + submit to not read stale data
     public void readbackTexture(long texHandle, int x, int y, int w, int h, int level, ByteBuffer output) {
         if (texHandle == 0 || output == null) return;
-        frameManager.submitMidFrame();
 
         final long cb = SDL_AcquireGPUCommandBuffer(device.getDevice());
         if (cb == 0) return;
@@ -113,6 +115,11 @@ public final class TextureOps {
         final long destTex = resourceManager.getTextureHandle(destGlId);
         if (destTex == 0) return;
 
+        if (st.boundReadFboId == 0) {
+            copyFromDefaultFramebuffer(st, destGlId, destTex, level, xoffset, yoffset, x, y, width, height);
+            return;
+        }
+
         final FboState fbo = resourceManager.getFbo(st.boundReadFboId);
         if (fbo == null) return;
 
@@ -121,35 +128,81 @@ public final class TextureOps {
         final long srcTex = isDepthDest ? fbo.depthTexture : fbo.colorTextures[fbo.readBufferIndex];
         if (srcTex == 0) return;
 
-        if (isDepthDest) {
-            copyTexture(srcTex, x, y, destTex, xoffset, yoffset, width, height);
-            return;
-        }
-
-        final int srcGlId = fbo.colorGlIds[fbo.readBufferIndex];
+        final int srcGlId = isDepthDest ? fbo.depthGlId : fbo.colorGlIds[fbo.readBufferIndex];
         final ResourceManager.TextureMeta srcMeta = srcGlId != 0 ? resourceManager.getTextureMeta(srcGlId) : null;
-        if (srcMeta != null && destMeta != null && srcMeta.sdlFormat() == destMeta.sdlFormat()) {
-            copyTexture(srcTex, x, y, destTex, xoffset, yoffset, width, height);
+        final long clip = CopyRectClip.clipCopyRect(x, y, xoffset, yoffset, width, height, srcMeta != null ? srcMeta.width() : fbo.width, srcMeta != null ? srcMeta.height() : fbo.height, levelWidth(destMeta, level), levelHeight(destMeta, level));
+        if (clip == CopyRectClip.EMPTY) return;
+        final int sx = CopyRectClip.srcX(clip);
+        final int sy = CopyRectClip.srcY(clip);
+        final int dx = CopyRectClip.dstX(clip, x, xoffset);
+        final int dy = CopyRectClip.dstY(clip, y, yoffset);
+        final int w = CopyRectClip.width(clip);
+        final int h = CopyRectClip.height(clip);
+
+        fboClearTracker.materializePendingClearForTexture(st, srcTex);
+        fboClearTracker.resolveDestinationForWrite(st, destTex, destMeta, level, dx, dy, 0, w, h);
+
+        if (isDepthDest || (srcMeta != null && destMeta != null && srcMeta.sdlFormat() == destMeta.sdlFormat())) {
+            copyTexture(srcTex, sx, sy, destTex, level, dx, dy, w, h);
         } else {
-            blitTexture(srcTex, x, y, width, height, destTex, xoffset, yoffset, width, height, GL11.GL_NEAREST);
+            blitTexture(srcTex, sx, sy, w, h, destTex, level, dx, dy, w, h, GL11.GL_NEAREST);
         }
     }
 
+    private static int levelWidth(ResourceManager.TextureMeta meta, int level) {
+        return meta != null ? PixelOps.mipLevelSize(meta.width(), level) : 0;
+    }
+
+    private static int levelHeight(ResourceManager.TextureMeta meta, int level) {
+        return meta != null ? PixelOps.mipLevelSize(meta.height(), level) : 0;
+    }
+
+    private void copyFromDefaultFramebuffer(ContextState st, int destGlId, long destTex, int level, int xoffset, int yoffset, int x, int y, int width, int height) {
+        final ResourceManager.TextureMeta destMeta = resourceManager.getTextureMeta(destGlId);
+        if (destMeta != null && PixelOps.isDepthFormat(destMeta.sdlFormat())) return;
+
+        final long srcTex = frameManager.getFbo0Texture();
+        if (srcTex == 0) return;
+        final int srcFullW = frameManager.getFbo0Width();
+        final int srcFullH = frameManager.getFbo0Height();
+        if (srcFullW <= 0 || srcFullH <= 0) return;
+
+        final long clip = CopyRectClip.clipCopyRect(x, y, xoffset, yoffset, width, height, srcFullW, srcFullH, levelWidth(destMeta, level), levelHeight(destMeta, level));
+        if (clip == CopyRectClip.EMPTY) return;
+        final int sx = CopyRectClip.srcX(clip);
+        final int sy = CopyRectClip.srcY(clip);
+        final int dx = CopyRectClip.dstX(clip, x, xoffset);
+        final int dy = CopyRectClip.dstY(clip, y, yoffset);
+        final int w = CopyRectClip.width(clip);
+        final int h = CopyRectClip.height(clip);
+
+        if (st.pendingSwapchainClear || st.pendingSwapchainDepthClear || st.pendingSwapchainStencilClear) {
+            frameManager.ensureFbo0RenderPass(frameManager.frame(), st);
+        }
+        fboClearTracker.resolveDestinationForWrite(st, destTex, destMeta, level, dx, dy, 0, w, h);
+
+        blitTexture(srcTex, sx, srcFullH - sy - h, w, h, destTex, level, dx, dy, w, h, GL11.GL_NEAREST, SDL_FLIP_VERTICAL);
+    }
+
     public static boolean canCopyInsteadOfBlit(ResourceManager.TextureMeta src, ResourceManager.TextureMeta dst, int srcW, int srcH, int dstW, int dstH) {
         return src != null && dst != null && src.sdlFormat() == dst.sdlFormat() && srcW > 0 && srcH > 0 && srcW == dstW && srcH == dstH;
     }
 
-    public void copyTexture(long srcTex, int srcX, int srcY, long dstTex, int dstX, int dstY, int w, int h) {
+    public void copyTexture(long srcTex, int srcX, int srcY, long dstTex, int dstLevel, int dstX, int dstY, int w, int h) {
         final long cp = frameManager.ensureCopyPass();
         if (cp == 0) return;
         try (var stack = MemoryStack.stackPush()) {
             final var src = SDL_GPUTextureLocation.calloc(stack).texture(srcTex).x(srcX).y(srcY);
-            final var dst = SDL_GPUTextureLocation.calloc(stack).texture(dstTex).x(dstX).y(dstY);
+            final var dst = SDL_GPUTextureLocation.calloc(stack).texture(dstTex).mip_level(dstLevel).x(dstX).y(dstY);
             SDL_CopyGPUTextureToTexture(cp, src, dst, w, h, 1, false);
         }
     }
 
-    public void blitTexture(long srcTex, int srcX, int srcY, int srcW, int srcH, long dstTex, int dstX, int dstY, int dstW, int dstH, int glFilter) {
+    public void blitTexture(long srcTex, int srcX, int srcY, int srcW, int srcH, long dstTex, int dstLevel, int dstX, int dstY, int dstW, int dstH, int glFilter) {
+        blitTexture(srcTex, srcX, srcY, srcW, srcH, dstTex, dstLevel, dstX, dstY, dstW, dstH, glFilter, SDL_FLIP_NONE);
+    }
+
+    public void blitTexture(long srcTex, int srcX, int srcY, int srcW, int srcH, long dstTex, int dstLevel, int dstX, int dstY, int dstW, int dstH, int glFilter, int flipMode) {
         frameManager.endCopyPassIfActive();
         frameManager.endRenderPassIfActive();
         final long cb = frameManager.getCommandBuffer();
@@ -158,9 +211,9 @@ public final class TextureOps {
         try (var stack = MemoryStack.stackPush()) {
             final var info = SDL_GPUBlitInfo.calloc(stack);
             info.source(s -> s.texture(srcTex).x(srcX).y(srcY).w(srcW).h(srcH));
-            info.destination(d -> d.texture(dstTex).x(dstX).y(dstY).w(dstW).h(dstH));
+            info.destination(d -> d.texture(dstTex).mip_level(dstLevel).x(dstX).y(dstY).w(dstW).h(dstH));
             info.filter(glFilter == GL11.GL_LINEAR ? SDL_GPU_FILTER_LINEAR : SDL_GPU_FILTER_NEAREST);
-            info.flip_mode(0);
+            info.flip_mode(flipMode);
             frameManager.noteBlit();
             SDL_BlitGPUTexture(cb, info);
         }

sdl-gpu/src/main/java/com/gtnewhorizons/angelica/sdlgpu/shader/ShaderManager.java

@@ -58,6 +58,7 @@ import it.unimi.dsi.fastutil.ints.Int2IntOpenHashMap;
 import it.unimi.dsi.fastutil.ints.Int2ObjectOpenHashMap;
 import it.unimi.dsi.fastutil.ints.IntArrayList;
 import it.unimi.dsi.fastutil.ints.IntArrays;
+import it.unimi.dsi.fastutil.ints.IntIterator;
 import it.unimi.dsi.fastutil.longs.Long2ObjectOpenHashMap;
 import it.unimi.dsi.fastutil.longs.LongOpenHashSet;
 import it.unimi.dsi.fastutil.objects.Object2IntOpenHashMap;
@@ -599,29 +600,84 @@ public final class ShaderManager {
 
     private static int patchAttribLocations(ByteBuffer spirv, StageReflection vs, Object2IntOpenHashMap<String> bindings, int[] outVecSize, int[] outBaseType, String[] outName, Object2IntOpenHashMap<String> resolvedOut) {
         final IntBuffer vsBuf = spirv.asIntBuffer();
-        int mask = 0;
-        if (outName != null) Arrays.fill(outName, null);
-        for (VsInput vi : vs.vsInputs()) {
-            int finalLoc = vi.originalLocation();
-            final int desired = bindings.getInt(vi.name());
-            if (desired != -1 && desired != vi.originalLocation()) {
-                if (vsBuf.get(vi.binaryOffset()) != vi.originalLocation()) {
-                    LOG.error("applyAttribLocations: sanity check failed for '{}' (expected {}, got {})", vi.name(), vi.originalLocation(), vsBuf.get(vi.binaryOffset()));
-                } else {
-                    vsBuf.put(vi.binaryOffset(), desired);
-                    finalLoc = desired;
+        final List<VsInput> inputs = vs.vsInputs();
+        final int count = inputs.size();
+        final int[] finalLoc = new int[count];
+        int taken = 0;
+
+        for (final IntIterator it = bindings.values().iterator(); it.hasNext(); ) {
+            final int bound = it.nextInt();
+            if (bound >= 0 && bound < ContextState.MAX_VERTEX_ATTRIBS) taken |= 1 << bound;
+        }
+        for (int i = 0; i < count; i++) {
+            finalLoc[i] = bindings.getInt(inputs.get(i).name());
+        }
+
+        int movers = 0;
+        for (int i = 0; i < count; i++) {
+            if (finalLoc[i] != -1) continue;
+            final int original = inputs.get(i).originalLocation();
+            if (original >= 0 && original < ContextState.MAX_VERTEX_ATTRIBS && (taken & (1 << original)) == 0) {
+                finalLoc[i] = original;
+                taken |= 1 << original;
+            } else {
+                movers++;
+            }
+        }
+
+        for (int n = 0; n < movers; n++) {
+            int pick = -1;
+            for (int i = 0; i < count; i++) {
+                if (finalLoc[i] == -1 && (pick == -1 || inputs.get(i).originalLocation() < inputs.get(pick).originalLocation())) {
+                    pick = i;
                 }
             }
-            if (resolvedOut != null) resolvedOut.put(vi.name(), finalLoc);
-            if (finalLoc < 0 || finalLoc >= 16) continue;
-            mask |= (1 << finalLoc);
-            outVecSize[finalLoc] = vi.vecSize();
-            outBaseType[finalLoc] = vi.baseType();
-            if (outName != null) outName[finalLoc] = vi.name();
+            final int free = Integer.numberOfTrailingZeros(~taken);
+            if (free >= ContextState.MAX_VERTEX_ATTRIBS) {
+                LOG.error("applyAttribLocations: no free vertex attribute slot for '{}'; leaving it at {}", inputs.get(pick).name(), inputs.get(pick).originalLocation());
+                finalLoc[pick] = inputs.get(pick).originalLocation();
+            } else {
+                finalLoc[pick] = free;
+                taken |= 1 << free;
+            }
+        }
+
+        int mask = 0;
+        int seen = 0;
+        if (outName != null) Arrays.fill(outName, null);
+        for (int i = 0; i < count; i++) {
+            final VsInput vi = inputs.get(i);
+            int loc = finalLoc[i];
+            if (loc != vi.originalLocation()) {
+                if (vsBuf.get(vi.binaryOffset()) != vi.originalLocation()) {
+                    LOG.error("applyAttribLocations: sanity check failed for '{}' (expected {}, got {})", vi.name(), vi.originalLocation(), vsBuf.get(vi.binaryOffset()));
+                    loc = vi.originalLocation();
+                } else {
+                    vsBuf.put(vi.binaryOffset(), loc);
+                }
+            }
+            finalLoc[i] = loc;
+            if (resolvedOut != null) resolvedOut.put(vi.name(), loc);
+            if (loc < 0 || loc >= ContextState.MAX_VERTEX_ATTRIBS) continue;
+            if ((seen & (1 << loc)) != 0) {
+                LOG.error("applyAttribLocations: '{}' and '{}' both resolved to location {}", inputNameAtLocation(inputs, finalLoc, i, loc), vi.name(), loc);
+            }
+            seen |= 1 << loc;
+            mask |= 1 << loc;
+            outVecSize[loc] = vi.vecSize();
+            outBaseType[loc] = vi.baseType();
+            if (outName != null) outName[loc] = vi.name();
         }
         return mask;
     }
 
+    private static String inputNameAtLocation(List<VsInput> inputs, int[] finalLoc, int limit, int loc) {
+        for (int i = 0; i < limit; i++) {
+            if (finalLoc[i] == loc) return inputs.get(i).name();
+        }
+        return "<unknown>";
+    }
+
     public VertexVariant getOrBuildVertexVariant(int program, long key, List<UscaledRetype.Attrib> attribs) {
         final ProgramObject prog = programObjects.get(program);
         if (prog == null || !prog.linked || prog.vertexSource.isEmpty()) return null;

sdl-gpu/src/main/resources/META-INF/services/com.mitchej123.lwjgl.LWJGLService

@@ -1 +0,0 @@
-com.gtnewhorizons.angelica.sdlgpu.SDLGPULWJGLService

sdl-gpu/src/test/java/com/gtnewhorizons/angelica/sdlgpu/BufferDeleteUnbindTest.java

@@ -0,0 +1,159 @@
+package com.gtnewhorizons.angelica.sdlgpu;
+
+import com.gtnewhorizons.angelica.sdlgpu.frame.ContextState;
+import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.lwjgl.opengl.GL15;
+import org.lwjgl.opengl.GL30;
+import org.lwjgl.opengl.GL31;
+import org.lwjgl.opengl.GL40;
+import org.lwjgl.opengl.GL43;
+import org.lwjgl.system.MemoryUtil;
+
+import java.nio.IntBuffer;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNotEquals;
+
+class BufferDeleteUnbindTest {
+
+    private static final int BUFFER = 7001;
+    private static final int OTHER = 7002;
+    private static final int UBO_INDEX = 3;
+    private static final int SSBO_INDEX = 5;
+    private static final int VERTEX_BINDING = 2;
+    private static final int ATTRIB = 4;
+
+    private static SDLGPURenderBackend backend;
+
+    private ContextState st;
+
+    @BeforeAll
+    static void createBackend() {
+        backend = new SDLGPURenderBackend();
+    }
+
+    @BeforeEach
+    void setUp() {
+        st = SdlTestRig.contextState();
+        backend.bindBufferRange(GL31.GL_UNIFORM_BUFFER, UBO_INDEX, BUFFER, 16L, 64L);
+        backend.bindBufferBase(GL43.GL_SHADER_STORAGE_BUFFER, SSBO_INDEX, BUFFER);
+        backend.bindBuffer(GL40.GL_DRAW_INDIRECT_BUFFER, BUFFER);
+        backend.bindBuffer(GL15.GL_ELEMENT_ARRAY_BUFFER, BUFFER);
+        backend.bindVertexBuffer(VERTEX_BINDING, BUFFER, 8L, 12);
+        backend.bindBuffer(GL15.GL_ARRAY_BUFFER, BUFFER);
+        backend.bindBuffer(GL43.GL_DISPATCH_INDIRECT_BUFFER, BUFFER);
+        backend.bindBuffer(GL31.GL_COPY_READ_BUFFER, BUFFER);
+        backend.bindBuffer(GL31.GL_COPY_WRITE_BUFFER, BUFFER);
+        backend.bindBuffer(GL30.GL_PIXEL_PACK_BUFFER, BUFFER);
+        backend.bindBuffer(GL30.GL_PIXEL_UNPACK_BUFFER, BUFFER);
+        st.currentVao.attribVBO[ATTRIB] = BUFFER;
+    }
+
+    @AfterEach
+    void tearDown() {
+        backend.bindBufferBase(GL31.GL_UNIFORM_BUFFER, UBO_INDEX, 0);
+        backend.bindBufferBase(GL43.GL_SHADER_STORAGE_BUFFER, SSBO_INDEX, 0);
+        backend.bindBuffer(GL40.GL_DRAW_INDIRECT_BUFFER, 0);
+        backend.bindBuffer(GL15.GL_ELEMENT_ARRAY_BUFFER, 0);
+        backend.bindVertexBuffer(VERTEX_BINDING, 0, 0L, 0);
+        backend.bindBuffer(GL15.GL_ARRAY_BUFFER, 0);
+        backend.bindBuffer(GL43.GL_DISPATCH_INDIRECT_BUFFER, 0);
+        backend.bindBuffer(GL31.GL_COPY_READ_BUFFER, 0);
+        backend.bindBuffer(GL31.GL_COPY_WRITE_BUFFER, 0);
+        backend.bindBuffer(GL30.GL_PIXEL_PACK_BUFFER, 0);
+        backend.bindBuffer(GL30.GL_PIXEL_UNPACK_BUFFER, 0);
+        st.currentVao.attribVBO[ATTRIB] = 0;
+    }
+
+    private void assertAllCleared() {
+        assertEquals(0, st.boundUboByIndex[UBO_INDEX]);
+        assertEquals(0, st.uboRangeOffset[UBO_INDEX]);
+        assertEquals(0, st.uboRangeSize[UBO_INDEX]);
+        assertEquals(0, st.boundUniformBuffer);
+        assertEquals(0, st.boundSsboByIndex[SSBO_INDEX]);
+        assertEquals(0, st.boundSSBO);
+        assertEquals(0, st.boundIndirectBuffer);
+        assertEquals(0, st.currentVao.elementBuffer);
+        assertEquals(0, st.currentVao.bindingBuffer[VERTEX_BINDING]);
+        assertEquals(0, st.currentVao.attribVBO[ATTRIB]);
+        assertEquals(0, st.boundArrayBuffer);
+        assertEquals(0, st.boundDispatchIndirectBuffer);
+        assertEquals(0, st.boundCopyReadBuffer);
+        assertEquals(0, st.boundCopyWriteBuffer);
+        assertEquals(0, st.boundPixelPackBuffer);
+        assertEquals(0, st.boundPixelUnpackBuffer);
+    }
+
+    private void assertAllBound() {
+        assertEquals(BUFFER, st.boundUboByIndex[UBO_INDEX]);
+        assertEquals(16, st.uboRangeOffset[UBO_INDEX]);
+        assertEquals(64, st.uboRangeSize[UBO_INDEX]);
+        assertEquals(BUFFER, st.boundUniformBuffer);
+        assertEquals(BUFFER, st.boundSsboByIndex[SSBO_INDEX]);
+        assertEquals(BUFFER, st.boundSSBO);
+        assertEquals(BUFFER, st.boundIndirectBuffer);
+        assertEquals(BUFFER, st.currentVao.elementBuffer);
+        assertEquals(BUFFER, st.currentVao.bindingBuffer[VERTEX_BINDING]);
+        assertEquals(BUFFER, st.currentVao.attribVBO[ATTRIB]);
+        assertEquals(BUFFER, st.boundArrayBuffer);
+        assertEquals(BUFFER, st.boundDispatchIndirectBuffer);
+        assertEquals(BUFFER, st.boundCopyReadBuffer);
+        assertEquals(BUFFER, st.boundCopyWriteBuffer);
+        assertEquals(BUFFER, st.boundPixelPackBuffer);
+        assertEquals(BUFFER, st.boundPixelUnpackBuffer);
+    }
+
+    @Test
+    void deleteClearsEveryBindingOfTheDeletedBuffer() {
+        assertAllBound();
+        final int uboGen = st.uboRangeGen;
+        final int ssboGen = st.ssboBindGen;
+        final long attribGen = st.attribStateGen;
+
+        backend.deleteBuffers(BUFFER);
+
+        assertAllCleared();
+        assertEquals(8L, st.currentVao.bindingOffset[VERTEX_BINDING]);
+        assertEquals(12, st.currentVao.bindingStride[VERTEX_BINDING]);
+        assertNotEquals(uboGen, st.uboRangeGen);
+        assertNotEquals(ssboGen, st.ssboBindGen);
+        assertNotEquals(attribGen, st.attribStateGen);
+    }
+
+    @Test
+    void intBufferDeleteClearsEveryBindingOfTheDeletedBuffer() {
+        final int uboGen = st.uboRangeGen;
+        final int ssboGen = st.ssboBindGen;
+        final long attribGen = st.attribStateGen;
+        final IntBuffer ids = MemoryUtil.memAllocInt(2);
+        try {
+            ids.put(0, OTHER).put(1, BUFFER);
+            backend.deleteBuffers(ids);
+        } finally {
+            MemoryUtil.memFree(ids);
+        }
+
+        assertAllCleared();
+        assertNotEquals(uboGen, st.uboRangeGen);
+        assertNotEquals(ssboGen, st.ssboBindGen);
+        assertNotEquals(attribGen, st.attribStateGen);
+    }
+
+    @Test
+    void deletingAnUnrelatedBufferChangesNothing() {
+        final int uboGen = st.uboRangeGen;
+        final int ssboGen = st.ssboBindGen;
+        final long attribGen = st.attribStateGen;
+
+        backend.deleteBuffers(OTHER);
+        backend.deleteBuffers(0);
+
+        assertAllBound();
+        assertEquals(uboGen, st.uboRangeGen);
+        assertEquals(ssboGen, st.ssboBindGen);
+        assertEquals(attribGen, st.attribStateGen);
+    }
+}

sdl-gpu/src/test/java/com/gtnewhorizons/angelica/sdlgpu/DispatchIndirectBindingTest.java

@@ -0,0 +1,44 @@
+package com.gtnewhorizons.angelica.sdlgpu;
+
+import com.gtnewhorizons.angelica.sdlgpu.frame.ContextState;
+import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.Test;
+import org.lwjgl.opengl.GL40;
+import org.lwjgl.opengl.GL43;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+class DispatchIndirectBindingTest {
+
+    @AfterEach
+    void resetContextState() {
+        final ContextState st = SdlTestRig.contextState();
+        st.boundIndirectBuffer = 0;
+        st.boundDispatchIndirectBuffer = 0;
+    }
+
+    @Test
+    void dispatchIndirectHasItsOwnBindingPoint() {
+        final SDLGPURenderBackend backend = new SDLGPURenderBackend();
+        final ContextState st = SdlTestRig.contextState();
+
+        backend.bindBuffer(GL40.GL_DRAW_INDIRECT_BUFFER, 11);
+        backend.bindBuffer(GL43.GL_DISPATCH_INDIRECT_BUFFER, 22);
+
+        assertEquals(11, st.getBoundBuffer(GL40.GL_DRAW_INDIRECT_BUFFER));
+        assertEquals(22, st.getBoundBuffer(GL43.GL_DISPATCH_INDIRECT_BUFFER));
+    }
+
+    @Test
+    void bindingDispatchIndirectLeavesTheDrawIndirectSlotAlone() {
+        final SDLGPURenderBackend backend = new SDLGPURenderBackend();
+        final ContextState st = SdlTestRig.contextState();
+
+        backend.bindBuffer(GL40.GL_DRAW_INDIRECT_BUFFER, 33);
+        backend.bindBuffer(GL43.GL_DISPATCH_INDIRECT_BUFFER, 44);
+        backend.bindBuffer(GL43.GL_DISPATCH_INDIRECT_BUFFER, 0);
+
+        assertEquals(33, st.getBoundBuffer(GL40.GL_DRAW_INDIRECT_BUFFER));
+        assertEquals(0, st.getBoundBuffer(GL43.GL_DISPATCH_INDIRECT_BUFFER));
+    }
+}

sdl-gpu/src/test/java/com/gtnewhorizons/angelica/sdlgpu/DrawBuffersLimitTest.java

@@ -0,0 +1,83 @@
+package com.gtnewhorizons.angelica.sdlgpu;
+
+import com.gtnewhorizons.angelica.glsm.testutil.Reflect;
+import com.gtnewhorizons.angelica.sdlgpu.frame.ContextState;
+import com.gtnewhorizons.angelica.sdlgpu.resource.FboState;
+import com.gtnewhorizons.angelica.sdlgpu.resource.ResourceManager;
+import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.lwjgl.opengl.GL30;
+
+import java.nio.IntBuffer;
+
+import static org.junit.jupiter.api.Assertions.assertArrayEquals;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNull;
+import static org.junit.jupiter.api.Assertions.assertSame;
+
+class DrawBuffersLimitTest {
+
+    private static final int BOUND_FBO = 901;
+    private static final int UNBOUND_FBO = 902;
+
+    private static SDLGPURenderBackend backend;
+    private static ResourceManager resourceManager;
+
+    private ContextState st;
+    private int savedFbo;
+
+    @BeforeAll
+    static void createBackend() {
+        backend = new SDLGPURenderBackend();
+        resourceManager = Reflect.get(backend, "resourceManager");
+    }
+
+    @BeforeEach
+    void setUp() {
+        st = SdlTestRig.contextState();
+        savedFbo = st.boundFboId;
+        st.boundFboId = BOUND_FBO;
+    }
+
+    @AfterEach
+    void tearDown() {
+        st.boundFboId = savedFbo;
+        resourceManager.deleteFbo(BOUND_FBO);
+        resourceManager.deleteFbo(UNBOUND_FBO);
+    }
+
+    private static IntBuffer attachments(int count) {
+        final int[] bufs = new int[count];
+        for (int i = 0; i < count; i++) bufs[i] = GL30.GL_COLOR_ATTACHMENT0 + i;
+        return IntBuffer.wrap(bufs);
+    }
+
+    @Test
+    void namedDrawBuffersOverTheLimitAreIgnored() {
+        final FboState fbo = resourceManager.createFbo(UNBOUND_FBO);
+        backend.namedFramebufferDrawBuffers(UNBOUND_FBO, attachments(2));
+        final int[] before = fbo.drawBuffers;
+        assertArrayEquals(new int[]{0, 1}, before, "a legal count must apply, or the refusal proves nothing");
+
+        backend.namedFramebufferDrawBuffers(UNBOUND_FBO, attachments(ContextState.MAX_COLOR_ATTACHMENTS + 1));
+        assertSame(before, fbo.drawBuffers, "a count above MAX_DRAW_BUFFERS must leave the draw buffers untouched");
+        assertArrayEquals(new int[]{0, 1}, fbo.drawBuffers);
+
+        backend.namedFramebufferDrawBuffers(UNBOUND_FBO, attachments(ContextState.MAX_COLOR_ATTACHMENTS));
+        assertEquals(ContextState.MAX_COLOR_ATTACHMENTS, fbo.drawBuffers.length, "exactly the limit is legal");
+    }
+
+    @Test
+    void boundDrawBuffersOverTheLimitAreIgnored() {
+        final FboState fbo = resourceManager.createFbo(BOUND_FBO);
+        assertSame(fbo, resourceManager.getFbo(st.boundFboId));
+        final int[] before = fbo.drawBuffers;
+
+        backend.drawBuffers(attachments(ContextState.MAX_COLOR_ATTACHMENTS + 1));
+        assertSame(before, fbo.drawBuffers, "a count above MAX_DRAW_BUFFERS must leave the draw buffers untouched");
+        assertArrayEquals(new int[]{0}, fbo.drawBuffers);
+        assertNull(fbo.cachedColorFormats, "an ignored call must not reach the pipeline color formats");
+    }
+}

sdl-gpu/src/test/java/com/gtnewhorizons/angelica/sdlgpu/ProxyTextureLimitsTest.java

@@ -0,0 +1,154 @@
+package com.gtnewhorizons.angelica.sdlgpu;
+
+import com.gtnewhorizons.angelica.sdlgpu.frame.ContextState;
+import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.Test;
+import org.lwjgl.opengl.EXTTextureFilterAnisotropic;
+import org.lwjgl.opengl.GL11;
+import org.lwjgl.opengl.GL12;
+import org.lwjgl.opengl.GL13;
+import org.lwjgl.opengl.GL14;
+import org.lwjgl.opengl.GL30;
+import org.lwjgl.opengl.GL40;
+
+import java.nio.ByteBuffer;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+class ProxyTextureLimitsTest {
+
+    @AfterEach
+    void resetContextState() {
+        final ContextState st = SdlTestRig.contextState();
+        st.activeTextureUnit = 0;
+        st.boundTextures[0] = 0;
+        st.proxyTexture.reject(0);
+    }
+
+    @Test
+    void threeDimensionalProxyIsBoundedByTheVolumeLimit() {
+        final SDLGPURenderBackend backend = new SDLGPURenderBackend();
+        final int limit = SDLGPURenderBackend.MAX_3D_TEXTURE_SIZE;
+
+        backend.texImage3D(GL12.GL_PROXY_TEXTURE_3D, 0, GL11.GL_RGBA, limit, limit, limit, 0, GL11.GL_RGBA, GL11.GL_UNSIGNED_BYTE, (ByteBuffer) null);
+        assertEquals(limit, backend.getTexLevelParameteri(GL12.GL_PROXY_TEXTURE_3D, 0, GL11.GL_TEXTURE_WIDTH));
+        assertEquals(limit, backend.getTexLevelParameteri(GL12.GL_PROXY_TEXTURE_3D, 0, GL12.GL_TEXTURE_DEPTH));
+
+        backend.texImage3D(GL12.GL_PROXY_TEXTURE_3D, 0, GL11.GL_RGBA, limit * 2, limit, limit, 0, GL11.GL_RGBA, GL11.GL_UNSIGNED_BYTE, (ByteBuffer) null);
+        assertEquals(0, backend.getTexLevelParameteri(GL12.GL_PROXY_TEXTURE_3D, 0, GL11.GL_TEXTURE_WIDTH));
+
+        backend.texImage3D(GL12.GL_PROXY_TEXTURE_3D, 0, GL11.GL_RGBA, limit, limit, limit * 2, 0, GL11.GL_RGBA, GL11.GL_UNSIGNED_BYTE, (ByteBuffer) null);
+        assertEquals(0, backend.getTexLevelParameteri(GL12.GL_PROXY_TEXTURE_3D, 0, GL12.GL_TEXTURE_DEPTH));
+    }
+
+    @Test
+    void everyProxyDimensionLimitIsAlsoQueryableAsADeviceLimit() {
+        assertEquals(16384, SDLGPURenderBackend.deviceLimit(GL11.GL_MAX_TEXTURE_SIZE));
+        assertEquals(2048, SDLGPURenderBackend.deviceLimit(GL12.GL_MAX_3D_TEXTURE_SIZE));
+        assertEquals(16384, SDLGPURenderBackend.deviceLimit(GL13.GL_MAX_CUBE_MAP_TEXTURE_SIZE));
+
+        assertEquals(16384, SDLGPURenderBackend.proxyDimensionLimit(GL11.GL_PROXY_TEXTURE_2D));
+        assertEquals(16384, SDLGPURenderBackend.proxyDimensionLimit(GL11.GL_PROXY_TEXTURE_1D));
+        assertEquals(2048, SDLGPURenderBackend.proxyDimensionLimit(GL12.GL_PROXY_TEXTURE_3D));
+        assertEquals(16384, SDLGPURenderBackend.proxyDimensionLimit(GL13.GL_PROXY_TEXTURE_CUBE_MAP));
+        assertEquals(16384, SDLGPURenderBackend.proxyDimensionLimit(GL40.GL_PROXY_TEXTURE_CUBE_MAP_ARRAY));
+    }
+
+    @Test
+    void oneDimensionalArrayLayersUseTheLayerLimitNotTheDimensionLimit() {
+        final SDLGPURenderBackend backend = new SDLGPURenderBackend();
+        final int layers = SDLGPURenderBackend.MAX_ARRAY_TEXTURE_LAYERS;
+
+        backend.texImage2D(GL30.GL_PROXY_TEXTURE_1D_ARRAY, 0, GL11.GL_RGBA, 512, layers, 0, GL11.GL_RGBA, GL11.GL_UNSIGNED_BYTE, (ByteBuffer) null);
+        assertEquals(512, backend.getTexLevelParameteri(GL30.GL_PROXY_TEXTURE_1D_ARRAY, 0, GL11.GL_TEXTURE_WIDTH));
+        assertEquals(layers, backend.getTexLevelParameteri(GL30.GL_PROXY_TEXTURE_1D_ARRAY, 0, GL11.GL_TEXTURE_HEIGHT));
+
+        backend.texImage2D(GL30.GL_PROXY_TEXTURE_1D_ARRAY, 0, GL11.GL_RGBA, 512, layers + 1, 0, GL11.GL_RGBA, GL11.GL_UNSIGNED_BYTE, (ByteBuffer) null);
+        assertEquals(0, backend.getTexLevelParameteri(GL30.GL_PROXY_TEXTURE_1D_ARRAY, 0, GL11.GL_TEXTURE_WIDTH));
+    }
+
+    @Test
+    void arrayLayerCountDoesNotHalvePerLevel() {
+        final SDLGPURenderBackend backend = new SDLGPURenderBackend();
+
+        backend.texImage2D(GL30.GL_PROXY_TEXTURE_1D_ARRAY, 2, GL11.GL_RGBA, 128, 64, 0, GL11.GL_RGBA, GL11.GL_UNSIGNED_BYTE, (ByteBuffer) null);
+        assertEquals(128, backend.getTexLevelParameteri(GL30.GL_PROXY_TEXTURE_1D_ARRAY, 2, GL11.GL_TEXTURE_WIDTH));
+        assertEquals(64, backend.getTexLevelParameteri(GL30.GL_PROXY_TEXTURE_1D_ARRAY, 2, GL11.GL_TEXTURE_HEIGHT));
+    }
+
+    @Test
+    void aProbedLevelIsAcceptedOnItsLevelZeroEquivalentSize() {
+        final SDLGPURenderBackend backend = new SDLGPURenderBackend();
+
+        backend.texImage2D(GL11.GL_PROXY_TEXTURE_2D, 3, GL11.GL_RGBA, 1024, 512, 0, GL11.GL_RGBA, GL11.GL_UNSIGNED_BYTE, (ByteBuffer) null);
+        assertEquals(1024, backend.getTexLevelParameteri(GL11.GL_PROXY_TEXTURE_2D, 3, GL11.GL_TEXTURE_WIDTH));
+        assertEquals(512, backend.getTexLevelParameteri(GL11.GL_PROXY_TEXTURE_2D, 3, GL11.GL_TEXTURE_HEIGHT));
+        assertEquals(8192, backend.getTexLevelParameteri(GL11.GL_PROXY_TEXTURE_2D, 0, GL11.GL_TEXTURE_WIDTH));
+    }
+
+    @Test
+    void aProbedLevelWhoseBaseWouldOverflowTheLimitIsRejected() {
+        final SDLGPURenderBackend backend = new SDLGPURenderBackend();
+
+        backend.texImage2D(GL11.GL_PROXY_TEXTURE_2D, 2, GL11.GL_RGBA, SDLGPURenderBackend.MAX_TEXTURE_SIZE, 4, 0, GL11.GL_RGBA, GL11.GL_UNSIGNED_BYTE, (ByteBuffer) null);
+        assertEquals(0, backend.getTexLevelParameteri(GL11.GL_PROXY_TEXTURE_2D, 2, GL11.GL_TEXTURE_WIDTH));
+
+        backend.texImage2D(GL11.GL_PROXY_TEXTURE_2D, 40, GL11.GL_RGBA, 4, 4, 0, GL11.GL_RGBA, GL11.GL_UNSIGNED_BYTE, (ByteBuffer) null);
+        assertEquals(0, backend.getTexLevelParameteri(GL11.GL_PROXY_TEXTURE_2D, 40, GL11.GL_TEXTURE_WIDTH));
+    }
+
+    @Test
+    void levelZeroEquivalentSizeRejectsOverflowAndNonsense() {
+        assertEquals(4, SDLGPURenderBackend.levelZeroEquivalentSize(4, 0));
+        assertEquals(32, SDLGPURenderBackend.levelZeroEquivalentSize(4, 3));
+        assertEquals(0, SDLGPURenderBackend.levelZeroEquivalentSize(4, -1));
+        assertEquals(0, SDLGPURenderBackend.levelZeroEquivalentSize(0, 2));
+        assertEquals(0, SDLGPURenderBackend.levelZeroEquivalentSize(4, 31));
+        assertEquals(0, SDLGPURenderBackend.levelZeroEquivalentSize(4, 30));
+        assertEquals(1 << 30, SDLGPURenderBackend.levelZeroEquivalentSize(1, 30));
+    }
+
+    @Test
+    void proxyTargetsAnswerTheGlParameterDefaults() {
+        final SDLGPURenderBackend backend = new SDLGPURenderBackend();
+        final int target = GL11.GL_PROXY_TEXTURE_2D;
+
+        assertEquals(GL11.GL_NEAREST_MIPMAP_LINEAR, backend.getTexParameteri(target, GL11.GL_TEXTURE_MIN_FILTER));
+        assertEquals(GL11.GL_LINEAR, backend.getTexParameteri(target, GL11.GL_TEXTURE_MAG_FILTER));
+        assertEquals(GL11.GL_REPEAT, backend.getTexParameteri(target, GL11.GL_TEXTURE_WRAP_S));
+        assertEquals(GL11.GL_REPEAT, backend.getTexParameteri(target, GL11.GL_TEXTURE_WRAP_T));
+        assertEquals(GL11.GL_REPEAT, backend.getTexParameteri(target, GL12.GL_TEXTURE_WRAP_R));
+        assertEquals(0, backend.getTexParameteri(target, GL12.GL_TEXTURE_BASE_LEVEL));
+        assertEquals(1000, backend.getTexParameteri(target, GL12.GL_TEXTURE_MAX_LEVEL));
+        assertEquals(-1000.0f, backend.getTexParameterf(target, GL12.GL_TEXTURE_MIN_LOD));
+        assertEquals(1000.0f, backend.getTexParameterf(target, GL12.GL_TEXTURE_MAX_LOD));
+        assertEquals(0.0f, backend.getTexParameterf(target, GL14.GL_TEXTURE_LOD_BIAS));
+        assertEquals(1.0f, backend.getTexParameterf(target, EXTTextureFilterAnisotropic.GL_TEXTURE_MAX_ANISOTROPY_EXT));
+    }
+
+    @Test
+    void proxyParameterDefaultsIgnoreTheBoundTexturesOwnState() {
+        final SDLGPURenderBackend backend = new SDLGPURenderBackend();
+        final ContextState st = SdlTestRig.contextState();
+        st.activeTextureUnit = 0;
+        st.boundTextures[0] = 8181;
+
+        backend.texParameteri(GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_MIN_FILTER, GL11.GL_NEAREST);
+        assertEquals(GL11.GL_NEAREST, backend.getTexParameteri(GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_MIN_FILTER));
+        assertEquals(GL11.GL_NEAREST_MIPMAP_LINEAR, backend.getTexParameteri(GL11.GL_PROXY_TEXTURE_2D, GL11.GL_TEXTURE_MIN_FILTER));
+    }
+
+    @Test
+    void proxyTargetsNeverReceiveParameterWrites() {
+        final SDLGPURenderBackend backend = new SDLGPURenderBackend();
+        final ContextState st = SdlTestRig.contextState();
+        st.activeTextureUnit = 0;
+        st.boundTextures[0] = 8282;
+
+        backend.texParameteri(GL11.GL_PROXY_TEXTURE_2D, GL11.GL_TEXTURE_MIN_FILTER, GL11.GL_NEAREST);
+        backend.texParameterf(GL11.GL_PROXY_TEXTURE_2D, GL14.GL_TEXTURE_LOD_BIAS, 4.0f);
+
+        assertEquals(GL11.GL_NEAREST_MIPMAP_LINEAR, backend.getTexParameteri(GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_MIN_FILTER));
+        assertEquals(0.0f, backend.getTexParameterf(GL11.GL_TEXTURE_2D, GL14.GL_TEXTURE_LOD_BIAS));
+    }
+}

sdl-gpu/src/test/java/com/gtnewhorizons/angelica/sdlgpu/ProxyTextureTargetTest.java

@@ -0,0 +1,159 @@
+package com.gtnewhorizons.angelica.sdlgpu;
+
+import com.gtnewhorizons.angelica.sdlgpu.frame.ContextState;
+import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.params.ParameterizedTest;
+import org.junit.jupiter.params.provider.Arguments;
+import org.junit.jupiter.params.provider.MethodSource;
+import org.lwjgl.opengl.GL11;
+import org.lwjgl.opengl.GL12;
+import org.lwjgl.opengl.GL13;
+import org.lwjgl.opengl.GL30;
+import org.lwjgl.opengl.GL31;
+import org.lwjgl.opengl.GL32;
+import org.lwjgl.opengl.GL40;
+
+import java.nio.ByteBuffer;
+import java.util.stream.Stream;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+class ProxyTextureTargetTest {
+
+    private static final int[] PROXY_TARGETS = {
+        0x8063, 0x8064, 0x8070, 0x851B, 0x8C19, 0x8C1B, 0x84F7, 0x900B, 0x9101, 0x9103
+    };
+
+    private static SDLGPURenderBackend backend;
+
+    @BeforeAll
+    static void setUp() {
+        backend = new SDLGPURenderBackend();
+    }
+
+    @AfterEach
+    void resetContextState() {
+        final ContextState st = SdlTestRig.contextState();
+        st.activeTextureUnit = 0;
+        st.boundTextures[0] = 0;
+        st.boundTextures[1] = 0;
+        st.proxyTexture.reject(0);
+    }
+
+    @Test
+    void everyProxyTargetIsRecognized() {
+        for (int target : PROXY_TARGETS) {
+            assertTrue(SDLGPURenderBackend.isProxyTarget(target), () -> "0x" + Integer.toHexString(target));
+        }
+    }
+
+    @Test
+    void realTargetsAreNotProxies() {
+        final int[] real = {
+            GL11.GL_TEXTURE_1D, GL11.GL_TEXTURE_2D, GL12.GL_TEXTURE_3D, GL13.GL_TEXTURE_CUBE_MAP,
+            GL30.GL_TEXTURE_1D_ARRAY, GL30.GL_TEXTURE_2D_ARRAY, GL31.GL_TEXTURE_RECTANGLE,
+            GL40.GL_TEXTURE_CUBE_MAP_ARRAY, GL32.GL_TEXTURE_2D_MULTISAMPLE, GL32.GL_TEXTURE_2D_MULTISAMPLE_ARRAY,
+            0
+        };
+        for (int target : real) {
+            assertFalse(SDLGPURenderBackend.isProxyTarget(target), () -> "0x" + Integer.toHexString(target));
+        }
+    }
+
+    static Stream<Arguments> levelSizeCases() {
+        return Stream.of(
+            Arguments.of("level0", 16384, 0, 16384),
+            Arguments.of("level1", 16384, 1, 8192),
+            Arguments.of("level14FloorsAtOne", 16384, 14, 1),
+            Arguments.of("level15FloorsAtOne", 16384, 15, 1),
+            Arguments.of("level64FloorsAtOne", 16384, 64, 1),
+            Arguments.of("baseOneFloorsAtOne", 1, 3, 1),
+            Arguments.of("oddBaseRoundsDown", 6, 1, 3),
+            Arguments.of("rejectedProxyBaseZeroLevel0", 0, 0, 0),
+            Arguments.of("rejectedProxyBaseZeroLevel5", 0, 5, 0),
+            Arguments.of("rejectedProxyNegativeLevel", 16384, -1, 0));
+    }
+
+    @ParameterizedTest(name = "{0}")
+    @MethodSource("levelSizeCases")
+    void levelSizeMatchesExpectation(String label, int base, int level, int expected) {
+        assertEquals(expected, SDLGPURenderBackend.proxyLevelSize(base, level), label);
+    }
+
+    @Test
+    void proxyTexImage2DRecordsDimensionsWithoutTouchingTheBoundTexture() {
+        final ContextState st = SdlTestRig.contextState();
+        st.activeTextureUnit = 1;
+        st.boundTextures[1] = 4242;
+
+        backend.texImage2D(GL11.GL_PROXY_TEXTURE_2D, 0, GL11.GL_RGBA, 16384, 16384, 0, GL11.GL_RGBA, GL11.GL_UNSIGNED_BYTE, (ByteBuffer) null);
+
+        assertEquals(4242, st.boundTextures[1]);
+        assertEquals(16384, backend.getTexLevelParameteri(GL11.GL_PROXY_TEXTURE_2D, 0, GL11.GL_TEXTURE_WIDTH));
+        assertEquals(16384, backend.getTexLevelParameteri(GL11.GL_PROXY_TEXTURE_2D, 0, GL11.GL_TEXTURE_HEIGHT));
+        assertEquals(2048, backend.getTexLevelParameteri(GL11.GL_PROXY_TEXTURE_2D, 3, GL11.GL_TEXTURE_WIDTH));
+        assertEquals(GL11.GL_RGBA, backend.getTexLevelParameteri(GL11.GL_PROXY_TEXTURE_2D, 0, GL11.GL_TEXTURE_INTERNAL_FORMAT));
+        assertEquals(0, backend.getTexLevelParameteri(GL11.GL_PROXY_TEXTURE_2D, 0, GL11.GL_TEXTURE_BORDER));
+    }
+
+    @Test
+    void oversizedProxyTexImage2DZeroesEveryProxyField() {
+        final ContextState st = SdlTestRig.contextState();
+        st.activeTextureUnit = 0;
+
+        backend.texImage2D(GL11.GL_PROXY_TEXTURE_2D, 0, GL11.GL_RGBA, 16384, 16384, 0, GL11.GL_RGBA, GL11.GL_UNSIGNED_BYTE, (ByteBuffer) null);
+        backend.texImage2D(GL11.GL_PROXY_TEXTURE_2D, 0, GL11.GL_RGBA, 32768, 32768, 0, GL11.GL_RGBA, GL11.GL_UNSIGNED_BYTE, (ByteBuffer) null);
+
+        assertEquals(0, backend.getTexLevelParameteri(GL11.GL_PROXY_TEXTURE_2D, 0, GL11.GL_TEXTURE_WIDTH));
+        assertEquals(0, backend.getTexLevelParameteri(GL11.GL_PROXY_TEXTURE_2D, 0, GL11.GL_TEXTURE_HEIGHT));
+        assertEquals(0, backend.getTexLevelParameteri(GL11.GL_PROXY_TEXTURE_2D, 0, GL11.GL_TEXTURE_INTERNAL_FORMAT));
+    }
+
+    @Test
+    void proxyArrayTargetIsLimitedByLayerCount() {
+        final int layers = SDLGPURenderBackend.MAX_ARRAY_TEXTURE_LAYERS;
+
+        backend.texImage3D(GL30.GL_PROXY_TEXTURE_2D_ARRAY, 0, GL11.GL_RGBA, 64, 64, layers, 0, GL11.GL_RGBA, GL11.GL_UNSIGNED_BYTE, (ByteBuffer) null);
+        assertEquals(layers, backend.getTexLevelParameteri(GL30.GL_PROXY_TEXTURE_2D_ARRAY, 0, GL12.GL_TEXTURE_DEPTH));
+
+        backend.texImage3D(GL30.GL_PROXY_TEXTURE_2D_ARRAY, 0, GL11.GL_RGBA, 64, 64, layers + 1, 0, GL11.GL_RGBA, GL11.GL_UNSIGNED_BYTE, (ByteBuffer) null);
+        assertEquals(0, backend.getTexLevelParameteri(GL30.GL_PROXY_TEXTURE_2D_ARRAY, 0, GL12.GL_TEXTURE_DEPTH));
+        assertEquals(0, backend.getTexLevelParameteri(GL30.GL_PROXY_TEXTURE_2D_ARRAY, 0, GL11.GL_TEXTURE_WIDTH));
+    }
+
+    @Test
+    void proxyStateIsScopedToTheProbedTarget() {
+        backend.texImage2D(GL11.GL_PROXY_TEXTURE_2D, 0, GL11.GL_RGBA, 256, 256, 0, GL11.GL_RGBA, GL11.GL_UNSIGNED_BYTE, (ByteBuffer) null);
+
+        assertEquals(256, backend.getTexLevelParameteri(GL11.GL_PROXY_TEXTURE_2D, 0, GL11.GL_TEXTURE_WIDTH));
+        assertEquals(0, backend.getTexLevelParameteri(GL13.GL_PROXY_TEXTURE_CUBE_MAP, 0, GL11.GL_TEXTURE_WIDTH));
+        assertEquals(0, backend.getTexLevelParameteri(GL13.GL_PROXY_TEXTURE_CUBE_MAP, 0, GL11.GL_TEXTURE_HEIGHT));
+        assertEquals(0, backend.getTexLevelParameteri(GL13.GL_PROXY_TEXTURE_CUBE_MAP, 0, GL11.GL_TEXTURE_INTERNAL_FORMAT));
+        assertEquals(0, backend.getTexLevelParameteri(GL12.GL_PROXY_TEXTURE_3D, 0, GL12.GL_TEXTURE_DEPTH));
+    }
+
+    @Test
+    void unmappableProxyFormatIsRejected() {
+        backend.texImage2D(GL11.GL_PROXY_TEXTURE_2D, 0, GL11.GL_RGBA, 256, 256, 0, GL11.GL_RGBA, GL11.GL_UNSIGNED_BYTE, (ByteBuffer) null);
+        backend.texImage2D(GL11.GL_PROXY_TEXTURE_2D, 0, 0x1BADF00D, 256, 256, 0, GL11.GL_RGBA, GL11.GL_UNSIGNED_BYTE, (ByteBuffer) null);
+
+        assertEquals(0, backend.getTexLevelParameteri(GL11.GL_PROXY_TEXTURE_2D, 0, GL11.GL_TEXTURE_WIDTH));
+        assertEquals(0, backend.getTexLevelParameteri(GL11.GL_PROXY_TEXTURE_2D, 0, GL11.GL_TEXTURE_INTERNAL_FORMAT));
+    }
+
+    @Test
+    void proxyBindIsInert() {
+        final ContextState st = SdlTestRig.contextState();
+        st.activeTextureUnit = 0;
+        st.boundTextures[0] = 77;
+
+        for (int target : PROXY_TARGETS) {
+            backend.bindTexture(target, 99);
+            assertEquals(77, st.boundTextures[0], () -> "0x" + Integer.toHexString(target));
+        }
+    }
+}

sdl-gpu/src/test/java/com/gtnewhorizons/angelica/sdlgpu/SDLGPULWJGLServiceGatingTest.java

@@ -1,17 +1,34 @@
 package com.gtnewhorizons.angelica.sdlgpu;
 
-import com.mitchej123.lwjgl.LWJGLService;
+import com.gtnewhorizons.angelica.config.SystemProperties;
 import org.junit.jupiter.api.Test;
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
 import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertNull;
+import static org.junit.jupiter.api.Assertions.assertThrows;
 
 class SDLGPULWJGLServiceGatingTest {
 
     @Test
     void anUnengagedSdlDeclinesAndNeverArmsTheFallbackTripwire() {
+        final String key = SystemProperties.KEY_CELERITAS_LWJGL_SERVICE;
         assertFalse(SDLGPUGate.isEngaged(), "test JVM must not have an engaged SDL GPU device");
-        assertEquals(LWJGLService.PRIORITY_UNAVAILABLE, new SDLGPULWJGLService().getPriority());
-        assertFalse(SDLGPULWJGLService.isOfferedAsAvailable(), "declining must leave fallBackToGL() usable");
+        assertNull(System.getProperty(key), "an unengaged SDL must not bind the celeritas service");
+
+        try {
+            SDLGPULWJGLService.bind();
+            assertEquals(SDLGPULWJGLService.class.getName(), System.getProperty(key));
+
+            assertThrows(
+                IllegalStateException.class,
+                SDLGPULWJGLService::create,
+                "constructing the service while SDL GPU is unengaged must fail loudly");
+        } finally {
+            SDLGPULWJGLService.unbind();
+        }
+
+        assertNull(System.getProperty(key));
+        assertFalse(SDLGPULWJGLService.isConstructed(), "declining must leave fallBackToGL() usable");
     }
 }

sdl-gpu/src/test/java/com/gtnewhorizons/angelica/sdlgpu/SdlAsserts.java

@@ -0,0 +1,37 @@
+package com.gtnewhorizons.angelica.sdlgpu;
+
+import com.gtnewhorizons.angelica.sdlgpu.pipeline.PipelineCache;
+import com.sun.management.ThreadMXBean;
+
+import java.lang.management.ManagementFactory;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+import static org.junit.jupiter.api.Assumptions.assumeTrue;
+
+public final class SdlAsserts {
+
+    private static final int WARMUP_ROUNDS = 50_000;
+    private static final int MEASURED_ROUNDS = 100_000;
+    private static final long ALLOCATION_BUDGET_BYTES = 256L * 1024L;
+
+    private SdlAsserts() {}
+
+    public static void assertBlendFactors(PipelineCache p, int drawBuffer, int sc, int dc, int sa, int da, String when) {
+        assertEquals(sc, p.srcColorFactors[drawBuffer], when + ": srcColor of draw buffer " + drawBuffer);
+        assertEquals(dc, p.dstColorFactors[drawBuffer], when + ": dstColor of draw buffer " + drawBuffer);
+        assertEquals(sa, p.srcAlphaFactors[drawBuffer], when + ": srcAlpha of draw buffer " + drawBuffer);
+        assertEquals(da, p.dstAlphaFactors[drawBuffer], when + ": dstAlpha of draw buffer " + drawBuffer);
+    }
+
+    public static void assertAllocationFree(Runnable round, String what) {
+        assumeTrue(ManagementFactory.getThreadMXBean() instanceof ThreadMXBean);
+        final ThreadMXBean bean = (ThreadMXBean) ManagementFactory.getThreadMXBean();
+        assumeTrue(bean.isThreadAllocatedMemorySupported() && bean.isThreadAllocatedMemoryEnabled());
+        for (int i = 0; i < WARMUP_ROUNDS; i++) round.run();
+        final long before = bean.getCurrentThreadAllocatedBytes();
+        for (int i = 0; i < MEASURED_ROUNDS; i++) round.run();
+        final long allocated = bean.getCurrentThreadAllocatedBytes() - before;
+        assertTrue(allocated < ALLOCATION_BUDGET_BYTES, allocated + " bytes allocated across " + MEASURED_ROUNDS + " rounds of " + what);
+    }
+}

sdl-gpu/src/test/java/com/gtnewhorizons/angelica/sdlgpu/UniformStoreTest.java

@@ -0,0 +1,153 @@
+package com.gtnewhorizons.angelica.sdlgpu;
+
+import com.gtnewhorizons.angelica.sdlgpu.frame.ContextState;
+import com.gtnewhorizons.angelica.sdlgpu.shader.ShaderManager;
+import com.gtnewhorizons.angelica.sdlgpu.shader.UniformStaging;
+import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.lwjgl.system.MemoryUtil;
+
+import java.nio.IntBuffer;
+
+import static org.junit.jupiter.api.Assertions.assertArrayEquals;
+import static org.junit.jupiter.api.Assertions.assertDoesNotThrow;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertNotSame;
+import static org.junit.jupiter.api.Assertions.assertNull;
+import static org.junit.jupiter.api.Assertions.assertSame;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+class UniformStoreTest {
+
+    private static final int VEC4 = 0;
+    private static final int OUT_OF_RANGE = 7;
+    private static final float[] VALUES = {5f, 6f, 7f, 8f};
+
+    private static SDLGPURenderBackend backend;
+
+    private ContextState st;
+    private ShaderManager.ProgramObject prog;
+    private ShaderManager.ProgramObject savedProgramObj;
+    private int savedProgram;
+    private IntBuffer ints;
+
+    @BeforeAll
+    static void createBackend() {
+        backend = new SDLGPURenderBackend();
+    }
+
+    @BeforeEach
+    void setUp() {
+        st = SdlTestRig.contextState();
+        savedProgramObj = st.boundProgramObj;
+        savedProgram = st.boundProgram;
+        prog = new ShaderManager.ProgramObject();
+        prog.linked = true;
+        prog.vertexUboSize = 16;
+        prog.nextUniformLocation = 1;
+        prog.vertexMemberInfo.put(VEC4, new ShaderManager.UniformMemberInfo(0, 16, 0, true, 4, 1, 0, 1));
+        prog.buildUniformSlotArrays();
+        st.boundProgramObj = prog;
+        st.boundProgram = 1;
+        ints = MemoryUtil.memAllocInt(4);
+        ints.put(0, 1).put(1, 2).put(2, 3).put(3, 4);
+    }
+
+    @AfterEach
+    void tearDown() {
+        MemoryUtil.memFree(ints);
+        st.releaseUniformStaging(prog);
+        st.boundProgramObj = savedProgramObj;
+        st.boundProgram = savedProgram;
+    }
+
+    private void writeAll(int location) {
+        backend.uniform4f(location, 1f, 2f, 3f, 4f);
+        backend.uniform4fv(location, VALUES);
+        backend.uniform4i(location, 1, 2, 3, 4);
+        backend.uniform4iv(location, ints);
+    }
+
+    private void dropRound() {
+        st.boundProgramObj = null;
+        writeAll(VEC4);
+        st.boundProgramObj = prog;
+        writeAll(OUT_OF_RANGE);
+    }
+
+    private void assertNothingStaged() {
+        final UniformStaging us = st.uniformStaging(prog);
+        assertNull(us.uniformDataBySlot[VEC4]);
+        assertEquals(0L, us.uniformValueHashBySlot[VEC4]);
+        assertFalse(us.vsUniformDirty);
+    }
+
+    private float[] staged(int location) {
+        return st.uniformStaging(prog).uniformDataBySlot[location];
+    }
+
+    @Test
+    void noProgramBoundStoresNothing() {
+        st.boundProgramObj = null;
+        assertDoesNotThrow(() -> writeAll(VEC4));
+        st.boundProgramObj = prog;
+        assertNothingStaged();
+    }
+
+    @Test
+    void outOfRangeLocationStoresNothing() {
+        assertEquals(1, prog.uniformSlotCount);
+        assertDoesNotThrow(() -> writeAll(OUT_OF_RANGE));
+        assertNothingStaged();
+    }
+
+    @Test
+    void droppedStoresDoNotAllocate() {
+        SdlAsserts.assertAllocationFree(this::dropRound, "dropped uniform stores");
+        assertNothingStaged();
+    }
+
+    @Test
+    void boundProgramWriteStillStores() {
+        backend.uniform4f(VEC4, 1f, 2f, 3f, 4f);
+        assertArrayEquals(new float[]{1f, 2f, 3f, 4f}, staged(VEC4));
+
+        backend.uniform4fv(VEC4, VALUES);
+        assertArrayEquals(VALUES, staged(VEC4));
+
+        backend.uniform4iv(VEC4, ints);
+        final float[] stagedValues = staged(VEC4);
+        for (int i = 0; i < 4; i++) {
+            assertEquals(i + 1, Float.floatToRawIntBits(stagedValues[i]));
+        }
+        assertTrue(st.uniformStaging(prog).vsUniformDirty);
+    }
+
+    @Test
+    void vectorWriteCopiesTheCallerArrayAndReusesTheSlot() {
+        final float[] first = {5f, 6f, 7f, 8f};
+        backend.uniform4fv(VEC4, first);
+        final float[] slot = staged(VEC4);
+        assertNotSame(first, slot, "the staging must not hold the caller's array");
+        assertArrayEquals(new float[]{5f, 6f, 7f, 8f}, slot);
+
+        final float[] second = {9f, 10f, 11f, 12f};
+        backend.uniform4fv(VEC4, second);
+        assertSame(slot, staged(VEC4), "same-length writes must reuse the slot array");
+        assertNotSame(second, staged(VEC4));
+        assertArrayEquals(new float[]{9f, 10f, 11f, 12f}, slot);
+
+        final float[] equalValues = second.clone();
+        backend.uniform4fv(VEC4, equalValues);
+        assertSame(slot, staged(VEC4), "an equal-valued caller array must not replace the slot array");
+
+        backend.uniform4f(VEC4, 1f, 2f, 3f, 4f);
+        assertArrayEquals(new float[]{5f, 6f, 7f, 8f}, first);
+        assertArrayEquals(new float[]{9f, 10f, 11f, 12f}, second);
+        assertArrayEquals(new float[]{9f, 10f, 11f, 12f}, equalValues);
+        assertArrayEquals(new float[]{1f, 2f, 3f, 4f}, slot);
+    }
+}

sdl-gpu/src/test/java/com/gtnewhorizons/angelica/sdlgpu/frame/PresenterTest.java

@@ -9,6 +9,7 @@ import java.util.Deque;
 import java.util.concurrent.Executor;
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertSame;
 import static org.junit.jupiter.api.Assertions.assertTrue;
 import static org.lwjgl.sdl.SDLSurface.SDL_FLIP_NONE;
 
@@ -72,6 +73,21 @@ class PresenterTest {
         drainer.join();
     }
 
+    @Test
+    void requestReusesOneRunnableAcrossCalls() {
+        final DeferredExecutor executor = new DeferredExecutor();
+        final Presenter p = presenter(executor);
+
+        p.requestPresent(1L, 10, 10, SDL_FLIP_NONE);
+        final Runnable first = executor.tasks.peekFirst();
+        executor.runNext();
+
+        p.requestPresent(2L, 10, 10, SDL_FLIP_NONE);
+        final Runnable second = executor.tasks.peekFirst();
+
+        assertSame(first, second, "Presenter must submit the same preallocated Runnable on every request");
+    }
+
     @Test
     void anInlineExecutorReleasesTheSlotImmediately() {
         final Presenter p = new Presenter(new FrameManager(new Device()), Runnable::run);

sdl-gpu/src/test/java/com/gtnewhorizons/angelica/sdlgpu/glsm/GlsmSdlCopyBlitTest.java

@@ -0,0 +1,246 @@
+package com.gtnewhorizons.angelica.sdlgpu.glsm;
+
+import com.gtnewhorizons.angelica.glsm.GLStateManager;
+import com.gtnewhorizons.angelica.glsm.backend.BackendManager;
+import com.gtnewhorizons.angelica.glsm.testutil.Reflect;
+import com.gtnewhorizons.angelica.sdlgpu.SDLGPUGate;
+import com.gtnewhorizons.angelica.sdlgpu.frame.FrameManager;
+import com.gtnewhorizons.angelica.sdlgpu.resource.ResourceManager;
+import org.junit.jupiter.api.AfterAll;
+import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.api.Tag;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
+import org.lwjgl.opengl.GL11;
+import org.lwjgl.opengl.GL12;
+import org.lwjgl.opengl.GL13;
+import org.lwjgl.opengl.GL14;
+import org.lwjgl.opengl.GL30;
+import org.lwjgl.system.MemoryUtil;
+
+import java.nio.ByteBuffer;
+
+import static com.gtnewhorizons.angelica.sdlgpu.glsm.GlsmSdlHeadlessRig.SIZE;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+@Tag("glsm-sdl")
+@ExtendWith(GlsmSdlFrameExtension.class)
+class GlsmSdlCopyBlitTest {
+
+    private static final int RED = 0xFFFF0000;
+    private static final int GREEN = 0xFF00FF00;
+    private static final int BLUE = 0xFF0000FF;
+
+    private static final int SCISSOR_ROWS = 16;
+    private static final byte SENTINEL_BYTE = 0x7B;
+    private static final int SENTINEL = 0x7B7B7B7B;
+
+    private static FrameManager frameManager;
+    private static ResourceManager resourceManager;
+
+    @BeforeAll
+    static void boot() {
+        GlsmSdlHeadlessRig.boot();
+        frameManager = Reflect.get(BackendManager.RENDER_BACKEND, "frameManager");
+        resourceManager = Reflect.get(BackendManager.RENDER_BACKEND, "resourceManager");
+        frameManager.destroyFinalTarget();
+        frameManager.finalTarget().create(SDLGPUGate.device(), resourceManager, SIZE, SIZE, resourceManager.mapTextureFormat(GL11.GL_RGBA8));
+        assertEquals(SIZE, frameManager.getFbo0Height());
+    }
+
+    @AfterAll
+    static void dropFinalTarget() {
+        GlsmSdlHeadlessRig.endFrame();
+        if (frameManager != null) frameManager.destroyFinalTarget();
+    }
+
+    private static void assertRow(int[] pixels, int y, int expected, String label) {
+        for (int x = 0; x < SIZE; x += 8) {
+            GlsmSdlHeadlessRig.assertPixel(pixels, SIZE, x, y, expected, label + " row " + y);
+        }
+    }
+
+    @Test
+    void scissorOnTheUserFboClipsTheGlBottomRows() {
+        GlsmSdlHeadlessRig.bindTarget();
+        GlsmSdlHeadlessRig.clearTo(0.0f, 0.0f, 1.0f, 1.0f);
+
+        GLStateManager.glEnable(GL11.GL_SCISSOR_TEST);
+        GLStateManager.glScissor(0, 0, SIZE, SCISSOR_ROWS);
+        GlsmSdlHeadlessRig.solidQuad(1.0f, 0.0f, 0.0f);
+        GLStateManager.glDisable(GL11.GL_SCISSOR_TEST);
+
+        final int[] pixels = GlsmSdlHeadlessRig.readTarget();
+        assertRow(pixels, 0, RED, "inside the scissor");
+        assertRow(pixels, SCISSOR_ROWS - 1, RED, "inside the scissor");
+        assertRow(pixels, SCISSOR_ROWS, BLUE, "outside the scissor");
+        assertRow(pixels, SIZE - 1, BLUE, "outside the scissor");
+    }
+
+    private static int createTwoLevelTexture(int level0Argb, int level1Argb) {
+        final int id = GLStateManager.glGenTextures();
+        GLStateManager.glActiveTexture(GL13.GL_TEXTURE0);
+        GLStateManager.glBindTexture(GL11.GL_TEXTURE_2D, id);
+        GLStateManager.glTexParameteri(GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_MIN_FILTER, GL11.GL_NEAREST_MIPMAP_NEAREST);
+        GLStateManager.glTexParameteri(GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_MAG_FILTER, GL11.GL_NEAREST);
+        GLStateManager.glTexParameteri(GL11.GL_TEXTURE_2D, GL12.GL_TEXTURE_MAX_LEVEL, 1);
+        GLStateManager.glTexParameterf(GL11.GL_TEXTURE_2D, GL12.GL_TEXTURE_MIN_LOD, 0.0f);
+        GLStateManager.glTexParameterf(GL11.GL_TEXTURE_2D, GL12.GL_TEXTURE_MAX_LOD, 1.0f);
+        GLStateManager.glTexParameterf(GL11.GL_TEXTURE_2D, GL14.GL_TEXTURE_LOD_BIAS, 0.0f);
+        uploadLevel(0, SIZE, level0Argb);
+        uploadLevel(1, SIZE / 2, level1Argb);
+        return id;
+    }
+
+    private static void uploadLevel(int level, int size, int argb) {
+        final ByteBuffer texels = MemoryUtil.memAlloc(size * size * 4);
+        try {
+            for (int i = 0; i < size * size; i++) {
+                texels.put(i * 4, (byte) ((argb >> 16) & 0xFF));
+                texels.put(i * 4 + 1, (byte) ((argb >> 8) & 0xFF));
+                texels.put(i * 4 + 2, (byte) (argb & 0xFF));
+                texels.put(i * 4 + 3, (byte) ((argb >>> 24) & 0xFF));
+            }
+            GLStateManager.glTexImage2D(GL11.GL_TEXTURE_2D, level, GL11.GL_RGBA8, size, size, 0,
+                GL11.GL_RGBA, GL11.GL_UNSIGNED_BYTE, texels);
+        } finally {
+            MemoryUtil.memFree(texels);
+        }
+    }
+
+    private static int copyGreenIntoLevelOne() {
+        GlsmSdlHeadlessRig.bindTarget();
+        GlsmSdlHeadlessRig.clearTo(0.0f, 0.0f, 0.0f, 1.0f);
+        GlsmSdlHeadlessRig.solidQuad(0.0f, 1.0f, 0.0f);
+
+        final int texture = createTwoLevelTexture(RED, BLUE);
+        GLStateManager.glCopyTexSubImage2D(GL11.GL_TEXTURE_2D, 1, 0, 0, 0, 0, SIZE / 2, SIZE / 2);
+        return texture;
+    }
+
+    @Test
+    void copyTexSubImage2DWritesTheRequestedMipLevel() {
+        final int texture = copyGreenIntoLevelOne();
+
+        GlsmSdlHeadlessRig.bindTarget();
+        GlsmSdlHeadlessRig.clearTo(0.0f, 0.0f, 0.0f, 1.0f);
+        GlsmSdlHeadlessRig.texturedQuad(texture, 0.5f);
+
+        final int[] pixels = GlsmSdlHeadlessRig.readTarget();
+        GlsmSdlHeadlessRig.assertPixel(pixels, SIZE, SIZE / 2, SIZE / 2, GREEN, "minified sample of level 1");
+    }
+
+    @Test
+    void copyTexSubImage2DLeavesTheOtherMipLevelsUntouched() {
+        final int texture = copyGreenIntoLevelOne();
+
+        GlsmSdlHeadlessRig.bindTarget();
+        GlsmSdlHeadlessRig.clearTo(0.0f, 0.0f, 0.0f, 1.0f);
+        GlsmSdlHeadlessRig.texturedQuad(texture, 1.0f);
+
+        final int[] pixels = GlsmSdlHeadlessRig.readTarget();
+        GlsmSdlHeadlessRig.assertPixel(pixels, SIZE, SIZE / 4, SIZE / 4, RED, "magnified sample of the level 0 region the copy would land in");
+    }
+
+    @Test
+    void readPixelsCrossingTheTopEdgeReturnsTheInRangeRows() {
+        GlsmSdlHeadlessRig.bindTarget();
+        GlsmSdlHeadlessRig.clearTo(0.0f, 0.0f, 1.0f, 1.0f);
+        GlsmSdlHeadlessRig.halfQuad(0.0f, 1.0f, 0.0f, 1.0f, 0.0f);
+
+        final int[] pixels = GlsmSdlHeadlessRig.readTarget(0, SIZE / 2, SIZE, SIZE, SENTINEL_BYTE);
+        assertRow(pixels, 0, GREEN, "first in-range row");
+        assertRow(pixels, SIZE / 2 - 1, GREEN, "last in-range row");
+        assertRow(pixels, SIZE / 2, SENTINEL, "first out-of-range row");
+        assertRow(pixels, SIZE - 1, SENTINEL, "last out-of-range row");
+    }
+
+    private static int createSecondaryFbo() {
+        final int color = GLStateManager.glGenTextures();
+        GLStateManager.glActiveTexture(GL13.GL_TEXTURE0);
+        GLStateManager.glBindTexture(GL11.GL_TEXTURE_2D, color);
+        GLStateManager.glTexParameteri(GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_MIN_FILTER, GL11.GL_NEAREST);
+        GLStateManager.glTexParameteri(GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_MAG_FILTER, GL11.GL_NEAREST);
+        GLStateManager.glTexImage2D(GL11.GL_TEXTURE_2D, 0, GL11.GL_RGBA8, SIZE, SIZE, 0, GL11.GL_RGBA, GL11.GL_UNSIGNED_BYTE, (ByteBuffer) null);
+
+        final int depth = GLStateManager.glGenRenderbuffers();
+        GLStateManager.glBindRenderbuffer(GL30.GL_RENDERBUFFER, depth);
+        GLStateManager.glRenderbufferStorage(GL30.GL_RENDERBUFFER, GL30.GL_DEPTH24_STENCIL8, SIZE, SIZE);
+
+        final int fbo = GLStateManager.glGenFramebuffers();
+        GLStateManager.glBindFramebuffer(GL30.GL_FRAMEBUFFER, fbo);
+        GLStateManager.glFramebufferTexture2D(GL30.GL_FRAMEBUFFER, GL30.GL_COLOR_ATTACHMENT0, GL11.GL_TEXTURE_2D, color, 0);
+        GLStateManager.glFramebufferRenderbuffer(GL30.GL_FRAMEBUFFER, GL30.GL_DEPTH_STENCIL_ATTACHMENT, GL30.GL_RENDERBUFFER, depth);
+        return fbo;
+    }
+
+    @Test
+    void blitFramebufferWithColorAndDepthBitsMovesColor() {
+        GlsmSdlHeadlessRig.bindTarget();
+        GlsmSdlHeadlessRig.clearTo(0.0f, 1.0f, 0.0f, 1.0f);
+        GlsmSdlHeadlessRig.solidQuad(0.0f, 1.0f, 0.0f);
+
+        final int destination = createSecondaryFbo();
+        GLStateManager.glViewport(0, 0, SIZE, SIZE);
+        GLStateManager.glClearColor(0.0f, 0.0f, 1.0f, 1.0f);
+        GLStateManager.glClear(GL11.GL_COLOR_BUFFER_BIT | GL11.GL_DEPTH_BUFFER_BIT);
+        GlsmSdlHeadlessRig.solidQuad(0.0f, 0.0f, 1.0f);
+
+        GlsmSdlHeadlessRig.bindTarget();
+        GLStateManager.glBindFramebuffer(GL30.GL_DRAW_FRAMEBUFFER, destination);
+        GLStateManager.glBlitFramebuffer(0, 0, SIZE, SIZE, 0, 0, SIZE, SIZE,
+            GL11.GL_COLOR_BUFFER_BIT | GL11.GL_DEPTH_BUFFER_BIT, GL11.GL_NEAREST);
+
+        GLStateManager.glBindFramebuffer(GL30.GL_FRAMEBUFFER, destination);
+        final int[] pixels = GlsmSdlHeadlessRig.readTarget();
+        GlsmSdlHeadlessRig.assertPixel(pixels, SIZE, SIZE / 2, SIZE / 2, GREEN, "color aspect of a color+depth blit");
+        GlsmSdlHeadlessRig.assertPixel(pixels, SIZE, 4, SIZE - 5, GREEN, "color aspect of a color+depth blit");
+    }
+
+    @Test
+    void blitFramebufferIntoFbo0SurvivesTheFramesFirstFbo0Pass() {
+        GlsmSdlHeadlessRig.bindTarget();
+        GlsmSdlHeadlessRig.clearTo(0.0f, 1.0f, 0.0f, 1.0f);
+        GlsmSdlHeadlessRig.solidQuad(0.0f, 1.0f, 0.0f);
+
+        GLStateManager.glClearColor(0.0f, 0.0f, 1.0f, 1.0f);
+        GLStateManager.glBindFramebuffer(GL30.GL_DRAW_FRAMEBUFFER, 0);
+        GLStateManager.glBlitFramebuffer(0, 0, SIZE, SIZE, 0, 0, SIZE, SIZE, GL11.GL_COLOR_BUFFER_BIT, GL11.GL_NEAREST);
+
+        GLStateManager.glBindFramebuffer(GL30.GL_FRAMEBUFFER, 0);
+        GLStateManager.glViewport(0, 0, SIZE, SIZE);
+        GLStateManager.glClearColor(1.0f, 0.0f, 0.0f, 1.0f);
+        GLStateManager.glEnable(GL11.GL_SCISSOR_TEST);
+        GLStateManager.glScissor(0, 0, 4, 4);
+        GlsmSdlHeadlessRig.solidQuad(1.0f, 0.0f, 0.0f);
+        GLStateManager.glDisable(GL11.GL_SCISSOR_TEST);
+
+        final int[] pixels = GlsmSdlHeadlessRig.readTarget();
+        GlsmSdlHeadlessRig.assertPixel(pixels, SIZE, SIZE / 2, SIZE / 2, GREEN, "blit into fbo0 survived the first fbo0 pass");
+    }
+
+    @Test
+    void blitFramebufferFromFbo0ToTheUserFboKeepsGlOrientation() {
+        GlsmSdlHeadlessRig.bindTarget();
+        GlsmSdlHeadlessRig.clearTo(0.0f, 0.0f, 0.0f, 1.0f);
+        GlsmSdlHeadlessRig.solidQuad(0.0f, 0.0f, 0.0f);
+
+        GLStateManager.glBindFramebuffer(GL30.GL_FRAMEBUFFER, 0);
+        GLStateManager.glViewport(0, 0, SIZE, SIZE);
+        GLStateManager.glClearColor(0.0f, 0.0f, 1.0f, 1.0f);
+        GLStateManager.glClear(GL11.GL_COLOR_BUFFER_BIT | GL11.GL_DEPTH_BUFFER_BIT);
+        GlsmSdlHeadlessRig.halfQuad(-1.0f, 0.0f, 0.0f, 1.0f, 0.0f);
+        GlsmSdlHeadlessRig.halfQuad(0.0f, 1.0f, 1.0f, 0.0f, 0.0f);
+
+        GlsmSdlHeadlessRig.bindTarget();
+        GLStateManager.glBindFramebuffer(GL30.GL_READ_FRAMEBUFFER, 0);
+        GLStateManager.glBlitFramebuffer(0, 0, SIZE, SIZE, 0, 0, SIZE, SIZE, GL11.GL_COLOR_BUFFER_BIT, GL11.GL_NEAREST);
+
+        GlsmSdlHeadlessRig.bindTarget();
+        final int[] pixels = GlsmSdlHeadlessRig.readTarget();
+        GlsmSdlHeadlessRig.assertPixel(pixels, SIZE, SIZE / 2, 4, GREEN, "blitted fbo0 bottom");
+        GlsmSdlHeadlessRig.assertPixel(pixels, SIZE, SIZE / 2, SIZE - 5, RED, "blitted fbo0 top");
+        GlsmSdlHeadlessRig.assertPixel(pixels, SIZE, SIZE / 2, SIZE / 2 - 4, GREEN, "blitted fbo0 below the split");
+        GlsmSdlHeadlessRig.assertPixel(pixels, SIZE, SIZE / 2, SIZE / 2 + 4, RED, "blitted fbo0 above the split");
+    }
+}

sdl-gpu/src/test/java/com/gtnewhorizons/angelica/sdlgpu/glsm/GlsmSdlFbo0ViewportTest.java

@@ -0,0 +1,141 @@
+package com.gtnewhorizons.angelica.sdlgpu.glsm;
+
+import com.gtnewhorizons.angelica.glsm.GLStateManager;
+import com.gtnewhorizons.angelica.glsm.backend.BackendManager;
+import com.gtnewhorizons.angelica.glsm.testutil.Reflect;
+import com.gtnewhorizons.angelica.sdlgpu.SDLGPUGate;
+import com.gtnewhorizons.angelica.sdlgpu.frame.FrameManager;
+import com.gtnewhorizons.angelica.sdlgpu.resource.ResourceManager;
+import org.junit.jupiter.api.AfterAll;
+import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.api.Tag;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
+import org.lwjgl.opengl.GL11;
+import org.lwjgl.opengl.GL12;
+import org.lwjgl.opengl.GL13;
+import org.lwjgl.opengl.GL30;
+import org.lwjgl.system.MemoryUtil;
+
+import java.nio.ByteBuffer;
+
+import static com.gtnewhorizons.angelica.sdlgpu.glsm.GlsmSdlHeadlessRig.SIZE;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+import static org.junit.jupiter.api.Assertions.assertNull;
+
+@Tag("glsm-sdl")
+@ExtendWith(GlsmSdlFrameExtension.class)
+class GlsmSdlFbo0ViewportTest {
+
+    private static final int FBO0_W = 64;
+    private static final int FBO0_H = 96;
+    private static final int VIEW = 32;
+
+    private static final int RED = 0xFFFF0000;
+    private static final int GREEN = 0xFF00FF00;
+    private static final int BLUE = 0xFF0000FF;
+
+    private static FrameManager frameManager;
+    private static ResourceManager resourceManager;
+
+    @BeforeAll
+    static void boot() {
+        GlsmSdlHeadlessRig.boot();
+        frameManager = Reflect.get(BackendManager.RENDER_BACKEND, "frameManager");
+        resourceManager = Reflect.get(BackendManager.RENDER_BACKEND, "resourceManager");
+        frameManager.destroyFinalTarget();
+        frameManager.finalTarget().create(SDLGPUGate.device(), resourceManager, FBO0_W, FBO0_H, resourceManager.mapTextureFormat(GL11.GL_RGBA8));
+        assertEquals(FBO0_H, frameManager.getFbo0Height());
+    }
+
+    @AfterAll
+    static void dropFinalTarget() {
+        GlsmSdlHeadlessRig.endFrame();
+        if (frameManager != null) frameManager.destroyFinalTarget();
+    }
+
+    private static void bindFbo0WithSmallViewport() {
+        GLStateManager.glBindFramebuffer(GL30.GL_FRAMEBUFFER, 0);
+        GLStateManager.glViewport(0, 0, VIEW, VIEW);
+        GLStateManager.glClearColor(0.0f, 0.0f, 1.0f, 1.0f);
+        GLStateManager.glClear(GL11.GL_COLOR_BUFFER_BIT | GL11.GL_DEPTH_BUFFER_BIT);
+    }
+
+    private static int createCopyTarget() {
+        final int id = GLStateManager.glGenTextures();
+        GLStateManager.glActiveTexture(GL13.GL_TEXTURE0);
+        GLStateManager.glBindTexture(GL11.GL_TEXTURE_2D, id);
+        GLStateManager.glTexParameteri(GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_MIN_FILTER, GL11.GL_NEAREST);
+        GLStateManager.glTexParameteri(GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_MAG_FILTER, GL11.GL_NEAREST);
+        GLStateManager.glTexParameteri(GL11.GL_TEXTURE_2D, GL12.GL_TEXTURE_MAX_LEVEL, 0);
+        GLStateManager.glTexImage2D(GL11.GL_TEXTURE_2D, 0, GL11.GL_RGBA8, VIEW, VIEW, 0, GL11.GL_RGBA, GL11.GL_UNSIGNED_BYTE, (ByteBuffer) null);
+        return id;
+    }
+
+    private static void drawTextureOverTarget(int texture) {
+        GlsmSdlHeadlessRig.bindTarget();
+        GlsmSdlHeadlessRig.clearTo(0.0f, 0.0f, 0.0f, 1.0f);
+        GlsmSdlHeadlessRig.texturedQuad(texture, 1.0f);
+    }
+
+    @Test
+    void partialViewportDrawCoversOnlyTheGlViewportRows() {
+        bindFbo0WithSmallViewport();
+        GlsmSdlHeadlessRig.solidQuad(1.0f, 0.0f, 0.0f);
+
+        GlsmSdlHeadlessRig.assertUniform(GlsmSdlHeadlessRig.readTarget(0, 0, VIEW, VIEW), RED, "inside the viewport");
+        GlsmSdlHeadlessRig.assertUniform(GlsmSdlHeadlessRig.readTarget(0, FBO0_H - VIEW, VIEW, VIEW), BLUE, "above the viewport");
+    }
+
+    @Test
+    void copyTexSubImage2DFromAPartialViewportKeepsGlOrientation() {
+        bindFbo0WithSmallViewport();
+        GlsmSdlHeadlessRig.halfQuad(-1.0f, 0.0f, 0.0f, 1.0f, 0.0f);
+        GlsmSdlHeadlessRig.halfQuad(0.0f, 1.0f, 1.0f, 0.0f, 0.0f);
+
+        final int copy = createCopyTarget();
+        GLStateManager.glCopyTexSubImage2D(GL11.GL_TEXTURE_2D, 0, 0, 0, 0, 0, VIEW, VIEW);
+
+        drawTextureOverTarget(copy);
+        final int[] pixels = GlsmSdlHeadlessRig.readTarget();
+        GlsmSdlHeadlessRig.assertPixel(pixels, SIZE, SIZE / 2, 4, GREEN, "sampled copy bottom");
+        GlsmSdlHeadlessRig.assertPixel(pixels, SIZE, SIZE / 2, SIZE - 5, RED, "sampled copy top");
+    }
+
+    @Test
+    void copyTexImage2DAllocatesTheDestinationLevel() {
+        bindFbo0WithSmallViewport();
+        GlsmSdlHeadlessRig.solidQuad(1.0f, 0.0f, 0.0f);
+
+        final int copy = GLStateManager.glGenTextures();
+        GLStateManager.glActiveTexture(GL13.GL_TEXTURE0);
+        GLStateManager.glBindTexture(GL11.GL_TEXTURE_2D, copy);
+        GLStateManager.glTexParameteri(GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_MIN_FILTER, GL11.GL_NEAREST);
+        GLStateManager.glTexParameteri(GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_MAG_FILTER, GL11.GL_NEAREST);
+        GLStateManager.glTexParameteri(GL11.GL_TEXTURE_2D, GL12.GL_TEXTURE_MAX_LEVEL, 0);
+        assertNull(resourceManager.getTextureMeta(copy), "destination was allocated before the copy");
+
+        GLStateManager.glCopyTexImage2D(GL11.GL_TEXTURE_2D, 0, GL11.GL_RGBA8, 0, 0, VIEW, VIEW, 0);
+
+        final ResourceManager.TextureMeta meta = resourceManager.getTextureMeta(copy);
+        assertNotNull(meta, "copyTexImage2D did not allocate the destination");
+        assertEquals(VIEW, meta.width());
+        assertEquals(VIEW, meta.height());
+
+        GlsmSdlHeadlessRig.endFrame();
+        final ByteBuffer out = MemoryUtil.memAlloc(VIEW * VIEW * 4);
+        try {
+            GLStateManager.glGetTexImage(GL11.GL_TEXTURE_2D, 0, GL11.GL_RGBA, GL11.GL_UNSIGNED_BYTE, out);
+            for (int i = 0; i < VIEW * VIEW; i++) {
+                final int idx = i;
+                assertEquals((byte) 0xFF, out.get(i * 4), () -> "R at texel " + idx);
+                assertEquals((byte) 0x00, out.get(i * 4 + 1), () -> "G at texel " + idx);
+                assertEquals((byte) 0x00, out.get(i * 4 + 2), () -> "B at texel " + idx);
+                assertEquals((byte) 0xFF, out.get(i * 4 + 3), () -> "A at texel " + idx);
+            }
+        } finally {
+            MemoryUtil.memFree(out);
+        }
+    }
+}

sdl-gpu/src/test/java/com/gtnewhorizons/angelica/sdlgpu/glsm/GlsmSdlFfpTest.java

@@ -0,0 +1,213 @@
+package com.gtnewhorizons.angelica.sdlgpu.glsm;
+
+import com.gtnewhorizons.angelica.glsm.GLStateManager;
+import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.api.Tag;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
+import org.lwjgl.BufferUtils;
+import org.lwjgl.opengl.GL11;
+import org.lwjgl.opengl.GL12;
+import org.lwjgl.opengl.GL13;
+import org.lwjgl.system.MemoryUtil;
+
+import java.nio.ByteBuffer;
+import java.nio.FloatBuffer;
+import java.nio.IntBuffer;
+
+import static com.gtnewhorizons.angelica.sdlgpu.glsm.GlsmSdlHeadlessRig.SIZE;
+import static com.gtnewhorizons.angelica.sdlgpu.glsm.GlsmSdlHeadlessRig.describe;
+import static com.gtnewhorizons.angelica.sdlgpu.glsm.GlsmSdlHeadlessRig.pixelAt;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+@Tag("glsm-sdl")
+@ExtendWith(GlsmSdlFrameExtension.class)
+class GlsmSdlFfpTest {
+
+    private static final int TEXEL = 0xFFFF4020;
+    private static final int LIGHTMAP_SIZE = 16;
+
+    private static int baseTexture;
+    private static int lightmapTexture;
+
+    @BeforeAll
+    static void boot() {
+        GlsmSdlHeadlessRig.boot();
+        GlsmSdlHeadlessRig.beginFrame();
+        baseTexture = GlsmSdlHeadlessRig.createSolidTexture(TEXEL);
+        lightmapTexture = createLightmapTexture();
+        GlsmSdlHeadlessRig.endFrame();
+    }
+
+    private static int createLightmapTexture() {
+        final int id = GLStateManager.glGenTextures();
+        GLStateManager.glActiveTexture(GL13.GL_TEXTURE1);
+        GLStateManager.glBindTexture(GL11.GL_TEXTURE_2D, id);
+        GLStateManager.glTexParameteri(GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_MIN_FILTER, GL11.GL_NEAREST);
+        GLStateManager.glTexParameteri(GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_MAG_FILTER, GL11.GL_NEAREST);
+        GLStateManager.glTexImage2D(GL11.GL_TEXTURE_2D, 0, GL11.GL_RGBA8, LIGHTMAP_SIZE, LIGHTMAP_SIZE, 0, GL11.GL_RGBA, GL11.GL_UNSIGNED_BYTE, (ByteBuffer) null);
+        final ByteBuffer texels = MemoryUtil.memAlloc(LIGHTMAP_SIZE * LIGHTMAP_SIZE * 4);
+        try {
+            for (int y = 0; y < LIGHTMAP_SIZE; y++) {
+                for (int x = 0; x < LIGHTMAP_SIZE; x++) {
+                    final boolean brightest = (x == 0 && y == 0) || (x == LIGHTMAP_SIZE - 1 && y == LIGHTMAP_SIZE - 1);
+                    texels.put((byte) (brightest ? 255 : 0));
+                    texels.put((byte) 255);
+                    texels.put((byte) (brightest ? 255 : 0));
+                    texels.put((byte) 255);
+                }
+            }
+            texels.flip();
+            GLStateManager.glTexSubImage2D(GL11.GL_TEXTURE_2D, 0, 0, 0, LIGHTMAP_SIZE, LIGHTMAP_SIZE, GL11.GL_RGBA, GL11.GL_UNSIGNED_BYTE, texels);
+        } finally {
+            MemoryUtil.memFree(texels);
+        }
+        GLStateManager.glActiveTexture(GL13.GL_TEXTURE0);
+        return id;
+    }
+
+    private static void bindBaseTexture() {
+        GLStateManager.glActiveTexture(GL13.GL_TEXTURE0);
+        GLStateManager.glBindTexture(GL11.GL_TEXTURE_2D, baseTexture);
+        GLStateManager.glEnable(GL11.GL_TEXTURE_2D);
+    }
+
+    private static void enableLightmapUnit(boolean vanillaTextureMatrix) {
+        GlsmSdlHeadlessRig.enableLightmapUnit(lightmapTexture, vanillaTextureMatrix);
+    }
+
+    private static void quadUnit0Only() {
+        GLStateManager.glBegin(GL11.GL_QUADS);
+        GlsmSdlHeadlessRig.emitVertex(-1.0f, -1.0f, 0.0f, 0.0f, false, (short) 0);
+        GlsmSdlHeadlessRig.emitVertex(1.0f, -1.0f, 1.0f, 0.0f, false, (short) 0);
+        GlsmSdlHeadlessRig.emitVertex(1.0f, 1.0f, 1.0f, 1.0f, false, (short) 0);
+        GlsmSdlHeadlessRig.emitVertex(-1.0f, 1.0f, 0.0f, 1.0f, false, (short) 0);
+        GLStateManager.glEnd();
+    }
+
+    private static void quadTwoUnits(boolean vanillaBrightness) {
+        final short brightness = (short) (vanillaBrightness ? 240 : 0);
+        GLStateManager.glBegin(GL11.GL_QUADS);
+        GlsmSdlHeadlessRig.emitVertex(-1.0f, -1.0f, 0.0f, 0.0f, true, brightness);
+        GlsmSdlHeadlessRig.emitVertex(1.0f, -1.0f, 1.0f, 0.0f, true, brightness);
+        GlsmSdlHeadlessRig.emitVertex(1.0f, 1.0f, 1.0f, 1.0f, true, brightness);
+        GlsmSdlHeadlessRig.emitVertex(-1.0f, 1.0f, 0.0f, 1.0f, true, brightness);
+        GLStateManager.glEnd();
+    }
+
+    private static void assertTexelEverywhere(String label) {
+        final int[] pixels = GlsmSdlHeadlessRig.readTarget();
+        final int center = pixelAt(pixels, SIZE, SIZE / 2, SIZE / 2);
+        final int corner = pixelAt(pixels, SIZE, 2, 2);
+        assertEquals(TEXEL, center, () -> label + ": center " + describe(center));
+        assertEquals(TEXEL, corner, () -> label + ": corner " + describe(corner));
+    }
+
+    @Test
+    void singleUnitTexturedQuadShowsTheTexel() {
+        bindBaseTexture();
+        quadUnit0Only();
+        assertTexelEverywhere("single unit");
+    }
+
+    @Test
+    void twoUnitTerrainQuadWithVanillaLightmapMatrixShowsTheTexel() {
+        bindBaseTexture();
+        enableLightmapUnit(true);
+        GlsmSdlHeadlessRig.terrainRenderState();
+        quadTwoUnits(true);
+        assertTexelEverywhere("two units, vanilla lightmap matrix");
+    }
+
+    @Test
+    void twoUnitTerrainQuadWithIdentityLightmapMatrixShowsTheTexel() {
+        bindBaseTexture();
+        enableLightmapUnit(false);
+        GlsmSdlHeadlessRig.terrainRenderState();
+        quadTwoUnits(false);
+        assertTexelEverywhere("two units, identity lightmap matrix, zero brightness");
+    }
+
+    @Test
+    void twoUnitTerrainQuadThroughDisplayListsShowsTheTexel() {
+        bindBaseTexture();
+        enableLightmapUnit(true);
+        GlsmSdlHeadlessRig.terrainRenderState();
+
+        final int list = GLStateManager.glGenLists(1);
+        GLStateManager.glNewList(list, GL11.GL_COMPILE);
+        GLStateManager.glPushMatrix();
+        GLStateManager.glTranslatef(0.0f, 0.0f, 0.0f);
+        quadTwoUnits(true);
+        GLStateManager.glPopMatrix();
+        GLStateManager.glEndList();
+
+        GLStateManager.glCallList(list);
+        assertTexelEverywhere("two units, glCallList");
+
+        GlsmSdlHeadlessRig.beginFrame();
+        GlsmSdlHeadlessRig.bindTarget();
+        GlsmSdlHeadlessRig.clearTo(0.0f, 0.0f, 0.0f, 1.0f);
+
+        final IntBuffer lists = BufferUtils.createIntBuffer(1);
+        lists.put(0, list);
+        lists.position(0);
+        GLStateManager.glCallLists(lists);
+        assertTexelEverywhere("two units, glCallLists");
+    }
+
+    @Test
+    void litTexturedQuadIsShaded() {
+        bindBaseTexture();
+        enableGuiStandardItemLighting();
+        GLStateManager.glEnable(GL12.GL_RESCALE_NORMAL);
+        quadUnit0Only();
+
+        final int[] pixels = GlsmSdlHeadlessRig.readTarget();
+        final int center = pixelAt(pixels, SIZE, SIZE / 2, SIZE / 2);
+        final int red = (center >> 16) & 0xFF;
+        assertEquals(255, (center >>> 24) & 0xFF, () -> "lit quad alpha: " + describe(center));
+        assertTrue(red > 100, () -> "lit quad red: " + describe(center));
+        assertTrue(red < ((TEXEL >> 16) & 0xFF), () -> "lit quad is not attenuated: " + describe(center));
+    }
+
+    private static void enableGuiStandardItemLighting() {
+        GLStateManager.glPushMatrix();
+        GLStateManager.glRotatef(-30.0f, 0.0f, 1.0f, 0.0f);
+        GLStateManager.glRotatef(165.0f, 1.0f, 0.0f, 0.0f);
+
+        GLStateManager.glEnable(GL11.GL_LIGHTING);
+        GLStateManager.glEnable(GL11.GL_LIGHT0);
+        GLStateManager.glEnable(GL11.GL_LIGHT1);
+        GLStateManager.glEnable(GL11.GL_COLOR_MATERIAL);
+        GLStateManager.glColorMaterial(GL11.GL_FRONT_AND_BACK, GL11.GL_AMBIENT_AND_DIFFUSE);
+
+        final float[] first = normalize(0.2f, 1.0f, -0.7f);
+        final float[] second = normalize(-0.2f, 1.0f, 0.7f);
+        GLStateManager.glLight(GL11.GL_LIGHT0, GL11.GL_POSITION, floats(first[0], first[1], first[2], 0.0f));
+        GLStateManager.glLight(GL11.GL_LIGHT0, GL11.GL_DIFFUSE, floats(0.6f, 0.6f, 0.6f, 1.0f));
+        GLStateManager.glLight(GL11.GL_LIGHT0, GL11.GL_AMBIENT, floats(0.0f, 0.0f, 0.0f, 1.0f));
+        GLStateManager.glLight(GL11.GL_LIGHT0, GL11.GL_SPECULAR, floats(0.0f, 0.0f, 0.0f, 1.0f));
+        GLStateManager.glLight(GL11.GL_LIGHT1, GL11.GL_POSITION, floats(second[0], second[1], second[2], 0.0f));
+        GLStateManager.glLight(GL11.GL_LIGHT1, GL11.GL_DIFFUSE, floats(0.6f, 0.6f, 0.6f, 1.0f));
+        GLStateManager.glLight(GL11.GL_LIGHT1, GL11.GL_AMBIENT, floats(0.0f, 0.0f, 0.0f, 1.0f));
+        GLStateManager.glLight(GL11.GL_LIGHT1, GL11.GL_SPECULAR, floats(0.0f, 0.0f, 0.0f, 1.0f));
+        GLStateManager.glShadeModel(GL11.GL_FLAT);
+        GLStateManager.glLightModel(GL11.GL_LIGHT_MODEL_AMBIENT, floats(0.4f, 0.4f, 0.4f, 1.0f));
+
+        GLStateManager.glPopMatrix();
+    }
+
+    private static float[] normalize(float x, float y, float z) {
+        final float len = (float) Math.sqrt(x * x + y * y + z * z);
+        return new float[]{ x / len, y / len, z / len };
+    }
+
+    private static FloatBuffer floats(float a, float b, float c, float d) {
+        final FloatBuffer buf = BufferUtils.createFloatBuffer(4);
+        buf.put(a).put(b).put(c).put(d);
+        buf.flip();
+        return buf;
+    }
+}

sdl-gpu/src/test/java/com/gtnewhorizons/angelica/sdlgpu/glsm/GlsmSdlFrameExtension.java

@@ -0,0 +1,22 @@
+package com.gtnewhorizons.angelica.sdlgpu.glsm;
+
+import org.junit.jupiter.api.extension.AfterEachCallback;
+import org.junit.jupiter.api.extension.BeforeEachCallback;
+import org.junit.jupiter.api.extension.ExtensionContext;
+
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+public final class GlsmSdlFrameExtension implements BeforeEachCallback, AfterEachCallback {
+
+    @Override
+    public void beforeEach(ExtensionContext context) {
+        GlsmSdlHeadlessRig.beginFrameAndReset();
+    }
+
+    @Override
+    public void afterEach(ExtensionContext context) {
+        GlsmSdlHeadlessRig.endFrame();
+        assertTrue(GlsmSdlRedirectAgent.failures().isEmpty(),
+            () -> "redirect agent recorded failures: " + GlsmSdlRedirectAgent.failures());
+    }
+}

sdl-gpu/src/test/java/com/gtnewhorizons/angelica/sdlgpu/glsm/GlsmSdlHeadlessRig.java

@@ -0,0 +1,307 @@
+package com.gtnewhorizons.angelica.sdlgpu.glsm;
+
+import com.gtnewhorizons.angelica.glsm.GLStateManager;
+import com.gtnewhorizons.angelica.glsm.backend.BackendManager;
+import com.gtnewhorizons.angelica.glsm.backend.RenderBackend;
+import com.gtnewhorizons.angelica.glsm.hooks.GLSMInitConfig;
+import com.gtnewhorizons.angelica.glsm.streaming.TessellatorStreamingDrawer;
+import com.gtnewhorizons.angelica.glsm.testutil.Reflect;
+import com.gtnewhorizons.angelica.sdlgpu.SDLGPUGate;
+import com.gtnewhorizons.angelica.sdlgpu.SDLGPURenderBackend;
+import com.gtnewhorizons.angelica.sdlgpu.SdlTestRig;
+import com.gtnewhorizons.angelica.sdlgpu.pipeline.PipelineCache;
+import com.gtnewhorizons.angelica.sdlgpu.resource.ResourceManager;
+import it.unimi.dsi.fastutil.ints.Int2IntMap;
+import org.lwjgl.opengl.GL11;
+import org.lwjgl.opengl.GL12;
+import org.lwjgl.opengl.GL13;
+import org.lwjgl.opengl.GL30;
+import org.lwjgl.sdl.SDLError;
+import org.lwjgl.system.MemoryUtil;
+
+import java.nio.ByteBuffer;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+import static org.junit.jupiter.api.Assumptions.assumeTrue;
+
+public final class GlsmSdlHeadlessRig {
+
+    public static final int SIZE = 64;
+
+    private static boolean booted;
+    private static int fbo;
+    private static int colorTexture;
+    private static int depthRenderbuffer;
+
+    private GlsmSdlHeadlessRig() {}
+
+    public static void boot() {
+        if (booted) return;
+        SdlTestRig.initSdlVideo();
+        assumeTrue(SDLGPUGate.device().createDevice(), () -> "no SDL GPU device: " + SDLError.SDL_GetError());
+        Reflect.setStatic(SDLGPUGate.class, "engaged", true);
+
+        final RenderBackend backend = BackendManager.RENDER_BACKEND;
+        assumeTrue(backend instanceof SDLGPURenderBackend, () -> "selected backend is " + backend.getName());
+
+        backend.onPostWindowCreate(0L);
+        Reflect.setStaticFinal(GLStateManager.class, "MainThread", Thread.class, Thread.currentThread());
+
+        GLStateManager.initialize(GLSMInitConfig.builder()
+            .displaySize(SIZE, SIZE)
+            .directDrawer(TessellatorStreamingDrawer::drawDirect)
+            .streamingDrawerDestroy(TessellatorStreamingDrawer::destroy)
+            .build());
+        GLStateManager.setRunningSplash(false);
+        GLStateManager.markSplashComplete("glsmSdlHeadlessRig");
+
+        assertTrue(GlsmSdlRedirectAgent.transformedCount() > 0, "redirect agent transformed no classes");
+        assertTrue(GlsmSdlRedirectAgent.failures().isEmpty(),
+            () -> "redirect agent recorded failures: " + GlsmSdlRedirectAgent.failures());
+
+        createTarget();
+        booted = true;
+    }
+
+    private static void createTarget() {
+        beginFrame();
+        colorTexture = GLStateManager.glGenTextures();
+        GLStateManager.glBindTexture(GL11.GL_TEXTURE_2D, colorTexture);
+        GLStateManager.glTexParameteri(GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_MIN_FILTER, GL11.GL_NEAREST);
+        GLStateManager.glTexParameteri(GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_MAG_FILTER, GL11.GL_NEAREST);
+        GLStateManager.glTexImage2D(GL11.GL_TEXTURE_2D, 0, GL11.GL_RGBA8, SIZE, SIZE, 0, GL11.GL_RGBA, GL11.GL_UNSIGNED_BYTE, (ByteBuffer) null);
+
+        depthRenderbuffer = GLStateManager.glGenRenderbuffers();
+        GLStateManager.glBindRenderbuffer(GL30.GL_RENDERBUFFER, depthRenderbuffer);
+        GLStateManager.glRenderbufferStorage(GL30.GL_RENDERBUFFER, GL30.GL_DEPTH24_STENCIL8, SIZE, SIZE);
+
+        fbo = GLStateManager.glGenFramebuffers();
+        GLStateManager.glBindFramebuffer(GL30.GL_FRAMEBUFFER, fbo);
+        GLStateManager.glFramebufferTexture2D(GL30.GL_FRAMEBUFFER, GL30.GL_COLOR_ATTACHMENT0, GL11.GL_TEXTURE_2D, colorTexture, 0);
+        GLStateManager.glFramebufferRenderbuffer(GL30.GL_FRAMEBUFFER, GL30.GL_DEPTH_STENCIL_ATTACHMENT, GL30.GL_RENDERBUFFER, depthRenderbuffer);
+        GLStateManager.glViewport(0, 0, SIZE, SIZE);
+
+        PipelineCache.setSwapchainFormats(new int[]{ colorTargetSdlFormat() });
+        endFrame();
+    }
+
+    public static int glsmBufferBinding(int target) {
+        final Object ctx = Reflect.getStatic(GLStateManager.class, "primaryContext");
+        final Int2IntMap bound = Reflect.get(ctx, "boundOtherBuffers");
+        return bound.get(target);
+    }
+
+    private static int colorTargetSdlFormat() {
+        final ResourceManager rm = Reflect.get(BackendManager.RENDER_BACKEND, "resourceManager");
+        final ResourceManager.TextureMeta meta = rm.getTextureMeta(colorTexture);
+        return meta != null ? meta.sdlFormat() : 0;
+    }
+
+    private static boolean frameOpen;
+
+    public static void beginFrame() {
+        if (frameOpen) return;
+        BackendManager.RENDER_BACKEND.onFrameBegin();
+        frameOpen = true;
+    }
+
+    public static void endFrame() {
+        if (!frameOpen) return;
+        frameOpen = false;
+        BackendManager.RENDER_BACKEND.onFrameEnd();
+    }
+
+    public static void bindTarget() {
+        GLStateManager.glBindFramebuffer(GL30.GL_FRAMEBUFFER, fbo);
+        GLStateManager.glViewport(0, 0, SIZE, SIZE);
+    }
+
+    public static void clearTo(float r, float g, float b, float a) {
+        GLStateManager.glClearColor(r, g, b, a);
+        GLStateManager.glClear(GL11.GL_COLOR_BUFFER_BIT | GL11.GL_DEPTH_BUFFER_BIT);
+    }
+
+    public static void beginFrameAndReset() {
+        beginFrame();
+        resetState();
+        bindTarget();
+        clearTo(0.0f, 0.0f, 0.0f, 1.0f);
+    }
+
+    public static void resetState() {
+        GLStateManager.glActiveTexture(GL13.GL_TEXTURE1);
+        GLStateManager.glDisable(GL11.GL_TEXTURE_2D);
+        GLStateManager.glMatrixMode(GL11.GL_TEXTURE);
+        GLStateManager.glLoadIdentity();
+        GLStateManager.glActiveTexture(GL13.GL_TEXTURE0);
+        GLStateManager.glDisable(GL11.GL_TEXTURE_2D);
+        GLStateManager.glMatrixMode(GL11.GL_TEXTURE);
+        GLStateManager.glLoadIdentity();
+
+        GLStateManager.glDisable(GL11.GL_ALPHA_TEST);
+        GLStateManager.glDisable(GL11.GL_FOG);
+        GLStateManager.glDisable(GL11.GL_LIGHTING);
+        GLStateManager.glDisable(GL11.GL_LIGHT0);
+        GLStateManager.glDisable(GL11.GL_LIGHT1);
+        GLStateManager.glDisable(GL11.GL_COLOR_MATERIAL);
+        GLStateManager.glDisable(GL12.GL_RESCALE_NORMAL);
+        GLStateManager.glDisable(GL11.GL_DEPTH_TEST);
+        GLStateManager.glDisable(GL11.GL_BLEND);
+        GLStateManager.glDisable(GL11.GL_CULL_FACE);
+        GLStateManager.glDisable(GL11.GL_SCISSOR_TEST);
+        GLStateManager.glCullFace(GL11.GL_BACK);
+        GLStateManager.glShadeModel(GL11.GL_SMOOTH);
+        GLStateManager.glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
+        GLStateManager.glNormal3f(0.0f, 0.0f, 1.0f);
+
+        GLStateManager.glMatrixMode(GL11.GL_PROJECTION);
+        GLStateManager.glLoadIdentity();
+        GLStateManager.glMatrixMode(GL11.GL_MODELVIEW);
+        GLStateManager.glLoadIdentity();
+    }
+
+    public static void terrainRenderState() {
+        GLStateManager.glEnable(GL11.GL_ALPHA_TEST);
+        GLStateManager.glAlphaFunc(GL11.GL_GREATER, 0.1f);
+        GLStateManager.glEnable(GL11.GL_FOG);
+        GLStateManager.glFogi(GL11.GL_FOG_MODE, GL11.GL_LINEAR);
+        GLStateManager.glFogf(GL11.GL_FOG_START, 1.0e6f);
+        GLStateManager.glFogf(GL11.GL_FOG_END, 1.0e7f);
+    }
+
+    public static int createSolidTexture(int argb) {
+        final int id = GLStateManager.glGenTextures();
+        GLStateManager.glActiveTexture(GL13.GL_TEXTURE0);
+        GLStateManager.glBindTexture(GL11.GL_TEXTURE_2D, id);
+        GLStateManager.glTexParameteri(GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_MIN_FILTER, GL11.GL_NEAREST);
+        GLStateManager.glTexParameteri(GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_MAG_FILTER, GL11.GL_NEAREST);
+        final ByteBuffer texels = MemoryUtil.memAlloc(2 * 2 * 4);
+        try {
+            for (int i = 0; i < 4; i++) {
+                texels.put((byte) ((argb >> 16) & 0xFF));
+                texels.put((byte) ((argb >> 8) & 0xFF));
+                texels.put((byte) (argb & 0xFF));
+                texels.put((byte) ((argb >>> 24) & 0xFF));
+            }
+            texels.flip();
+            GLStateManager.glTexImage2D(GL11.GL_TEXTURE_2D, 0, GL11.GL_RGBA8, 2, 2, 0, GL11.GL_RGBA, GL11.GL_UNSIGNED_BYTE, texels);
+        } finally {
+            MemoryUtil.memFree(texels);
+        }
+        return id;
+    }
+
+    public static void enableLightmapUnit(int lightmapTexture, boolean vanillaTextureMatrix) {
+        GLStateManager.glActiveTexture(GL13.GL_TEXTURE1);
+        GLStateManager.glBindTexture(GL11.GL_TEXTURE_2D, lightmapTexture);
+        GLStateManager.glEnable(GL11.GL_TEXTURE_2D);
+        GLStateManager.glMatrixMode(GL11.GL_TEXTURE);
+        GLStateManager.glLoadIdentity();
+        if (vanillaTextureMatrix) {
+            final float scale = 0.00390625f;
+            GLStateManager.glScalef(scale, scale, scale);
+            GLStateManager.glTranslatef(8.0f, 8.0f, 8.0f);
+        }
+        GLStateManager.glMatrixMode(GL11.GL_MODELVIEW);
+        GLStateManager.glActiveTexture(GL13.GL_TEXTURE0);
+    }
+
+    public static void emitVertex(float x, float y, float u, float v, boolean lightmap, short brightness) {
+        GLStateManager.glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
+        GLStateManager.glNormal3f(0.0f, 0.0f, 1.0f);
+        GLStateManager.glTexCoord2f(u, v);
+        if (lightmap) {
+            GLStateManager.glMultiTexCoord2s(GL13.GL_TEXTURE1, brightness, brightness);
+        }
+        GLStateManager.glVertex3f(x, y, 0.0f);
+    }
+
+    private static void vertex(float x, float y, float r, float g, float b) {
+        GLStateManager.glColor4f(r, g, b, 1.0f);
+        GLStateManager.glNormal3f(0.0f, 0.0f, 1.0f);
+        GLStateManager.glVertex3f(x, y, 0.0f);
+    }
+
+    private static void texVertex(float x, float y, float u, float v) {
+        GLStateManager.glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
+        GLStateManager.glNormal3f(0.0f, 0.0f, 1.0f);
+        GLStateManager.glTexCoord2f(u, v);
+        GLStateManager.glVertex3f(x, y, 0.0f);
+    }
+
+    public static void halfQuad(float y0, float y1, float r, float g, float b) {
+        GLStateManager.glBegin(GL11.GL_QUADS);
+        vertex(-1.0f, y0, r, g, b);
+        vertex(1.0f, y0, r, g, b);
+        vertex(1.0f, y1, r, g, b);
+        vertex(-1.0f, y1, r, g, b);
+        GLStateManager.glEnd();
+    }
+
+    public static void solidQuad(float r, float g, float b) {
+        halfQuad(-1.0f, 1.0f, r, g, b);
+    }
+
+    public static void texturedQuad(int texture, float extent) {
+        GLStateManager.glActiveTexture(GL13.GL_TEXTURE0);
+        GLStateManager.glBindTexture(GL11.GL_TEXTURE_2D, texture);
+        GLStateManager.glEnable(GL11.GL_TEXTURE_2D);
+        GLStateManager.glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
+        GLStateManager.glBegin(GL11.GL_QUADS);
+        texVertex(-extent, -extent, 0.0f, 0.0f);
+        texVertex(extent, -extent, 1.0f, 0.0f);
+        texVertex(extent, extent, 1.0f, 1.0f);
+        texVertex(-extent, extent, 0.0f, 1.0f);
+        GLStateManager.glEnd();
+    }
+
+    public static int[] readTarget() {
+        return readTarget(0, 0, SIZE, SIZE, (byte) 0);
+    }
+
+    public static int[] readTarget(int x, int y, int w, int h) {
+        return readTarget(x, y, w, h, (byte) 0);
+    }
+
+    public static int[] readTarget(int x, int y, int w, int h, byte fill) {
+        endFrame();
+        final ByteBuffer pixels = MemoryUtil.memAlloc(w * h * 4);
+        try {
+            for (int i = 0; i < w * h * 4; i++) pixels.put(i, fill);
+            GLStateManager.glReadPixels(x, y, w, h, GL11.GL_RGBA, GL11.GL_UNSIGNED_BYTE, pixels);
+            final int[] out = new int[w * h];
+            for (int i = 0; i < out.length; i++) {
+                final int r = pixels.get(i * 4) & 0xFF;
+                final int g = pixels.get(i * 4 + 1) & 0xFF;
+                final int b = pixels.get(i * 4 + 2) & 0xFF;
+                final int a = pixels.get(i * 4 + 3) & 0xFF;
+                out[i] = (a << 24) | (r << 16) | (g << 8) | b;
+            }
+            return out;
+        } finally {
+            MemoryUtil.memFree(pixels);
+        }
+    }
+
+    public static int pixelAt(int[] pixels, int rowStride, int x, int y) {
+        return pixels[y * rowStride + x];
+    }
+
+    public static String describe(int argb) {
+        return String.format("a=%d r=%d g=%d b=%d", (argb >>> 24) & 0xFF, (argb >> 16) & 0xFF, (argb >> 8) & 0xFF, argb & 0xFF);
+    }
+
+    public static void assertPixel(int[] pixels, int stride, int x, int y, int expected, String label) {
+        final int got = pixelAt(pixels, stride, x, y);
+        assertEquals(expected, got, () -> label + " at (" + x + "," + y + "): " + describe(got));
+    }
+
+    public static void assertUniform(int[] pixels, int expected, String label) {
+        for (int i = 0; i < pixels.length; i++) {
+            final int got = pixels[i];
+            final int idx = i;
+            assertEquals(expected, got, () -> label + " at index " + idx + ": " + describe(got));
+        }
+    }
+}