Narrow and make damage overlay a config option (#1886)

Co-authored-by: Jason Mitchell <[email protected]>

.github/PULL_REQUEST_TEMPLATE.md

@@ -0,0 +1,14 @@
+# Description or your *PR* and other info
+<!-- Please include a summary of the change -->
+<!-- Any details that you think are important to review this PR? -->
+<!-- Are there any Issues / PRs related to this one? -->
+
+<!-- Add a screenshot or a video demonstration for new features -->
+
+<details open><summary>Template</summary> <!-- OPEN is intentional -->
+
+### Before submitting a *pull request* make sure you have:
+- [ ] Read the [AI Contribution Policy](https://github.com/GTNewHorizons/Angelica/blob/master/AI_POLICY.md)
+- [ ] At least [skimmed](https://github.com/GTNewHorizons/Angelica/search?q=is%3Apr&type=Issues) the tracker for similar pull requests
+
+</details>

.github/scripts/announce-release.sh

@@ -0,0 +1,40 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+: "${REPO:?REPO required}"
+: "${TAG:?TAG required}"
+
+if [ -z "${DISCORD_WEBHOOK_URL:-}" ]; then
+  echo "DISCORD_WEBHOOK_URL not set, skipping"
+  exit 0
+fi
+
+if ! release_json=$(gh release view "$TAG" --repo "$REPO" --json body,url,publishedAt 2>&1); then
+  echo "Could not read release $TAG in $REPO; skipping:"
+  printf '%s\n' "$release_json"
+  exit 0
+fi
+body=$(jq -r '.body // ""' <<<"$release_json")
+url=$(jq -r '.url' <<<"$release_json")
+ts=$(jq -r '.publishedAt // ""' <<<"$release_json")
+[ -n "$ts" ] || ts=$(date -u +%Y-%m-%dT%H:%M:%SZ)
+
+payload=$(jq -n \
+  --arg title "$TAG" \
+  --arg url "$url" \
+  --arg desc "$body" \
+  --arg ts "$ts" \
+  '{
+    embeds: [{
+      title: ("Angelica " + $title + " released"),
+      url: $url,
+      description: (if ($desc | length) > 3900
+                    then $desc[0:3900] + "\n\n...[full changelog](" + $url + ")"
+                    else $desc end),
+      color: 3066993,
+      footer: { text: "GitHub Releases" },
+      timestamp: $ts
+    }]
+  }')
+
+curl -fsS -X POST -H "Content-Type: application/json" -d "$payload" "$DISCORD_WEBHOOK_URL"

.github/workflows/release-tags.yml

@@ -12,3 +12,22 @@ jobs:
   release-tags:
     uses: GTNewHorizons/GTNH-Actions-Workflows/.github/workflows/release-tags.yml@master
     secrets: inherit
+
+  notify-discord:
+    needs: [release-tags]
+    runs-on: ubuntu-24.04
+    if: >-
+      ${{ !endsWith(github.ref_name, '-snapshot')
+          && !contains(github.event.head_commit.message, '[snapshot]')
+          && !endsWith(github.ref_name, '-pre') }}
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v5
+      - name: Announce release to Discord
+        shell: bash
+        env:
+          DISCORD_WEBHOOK_URL: ${{ secrets.DISCORD_RELEASE_WEBHOOK_URL }}
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          REPO: ${{ github.repository }}
+          TAG: ${{ github.ref_name }}
+        run: bash .github/scripts/announce-release.sh

AI_POLICY.md

@@ -0,0 +1,55 @@
+# AI Usage Policy
+
+This project has strict rules for AI usage:
+
+* **The human-in-the-loop must fully understand all code.** If you
+can't explain what your changes do and how they interact with the
+greater system without the aid of AI tools, do not contribute
+those changes.
+
+* **Issues and discussions can use AI assistance but must have a full
+human-in-the-loop.** This means that any content generated with AI
+must have been reviewed *and edited* by a human before submission.
+The author must do their research and trim this down.
+
+* **No AI-generated media is allowed (textures, videos, audio, etc.).**
+Text and code are the only acceptable AI-generated content, per the
+other rules in this policy.
+
+* **Commit messages, PR descriptions must read in your own voice.**
+No AI-authored or AI co-authored commits, including Co-authored-by AI tags.
+
+* **Only contribute fixes for bugs you have personally hit in-game.**
+If you haven’t experienced or reproduced a bug firsthand, and don’t
+already know the relevant code well, don’t throw AI at it and forward it to us.
+Patches written for problems the author never actually experienced themselves
+tend to fix the wrong thing and/or produce another.
+
+* **The voice and intent of written content must be yours.**
+For documentation and especially quests, the tone and the point you're trying to make
+has to come from you, not an AI. Use AI to help with phrasing or cleanup if you like,
+but if the substance and voice aren't yours, don't contribute it.
+
+* **Bad AI use may be blocked.** People who produce bad contributions
+that are clearly AI (slop) may be blocked from making future contributions.
+We love to help junior developers learn and grow, but if you're interested
+in that, don't use AI and we'll help you. We're sorry that bad AI
+users have ruined this for you.
+
+
+## There are Humans Here
+
+Please remember that this project is maintained by humans.
+
+Every discussion, issue, and pull request is read and reviewed by
+humans (and sometimes machines, too). It is a boundary point at which
+people interact with each other and work is done. It is rude and
+disrespectful to approach this boundary with low-effort, unqualified
+work, since it puts the burden of validation on the maintainer.
+
+In a perfect world, AI would produce high-quality, accurate work
+every time. But today, that reality depends on the user of the AI.
+And today, many users of AI do not use it well. So, until that
+changes, we need to have strict rules to protect maintainers.
+
+Based on https://github.com/ghostty-org/ghostty/blob/main/AI_POLICY.md

dependencies.gradle

@@ -66,7 +66,7 @@ configurations.all {
 }
 
 dependencies {
-    compileOnly("com.github.GTNewHorizons:Hodgepodge:2.7.14:dev")
+    compileOnly("com.github.GTNewHorizons:Hodgepodge:2.7.158:dev")
 
     compileOnly("com.gtnewhorizons.retrofuturabootstrap:RetroFuturaBootstrap:1.1.0") { transitive = false }
 //    runtimeOnlyNonPublishable("com.github.GTNewHorizons:lwjgl3ify:3.0.99")
@@ -76,14 +76,14 @@ dependencies {
 
     // Iris Shaders
     compileOnly('org.jetbrains:annotations:26.0.2')
-    api("com.github.GTNewHorizons:GTNHLib:0.11.4:dev")
+    api("com.github.GTNewHorizons:GTNHLib:0.11.19:dev")
 
     shadowImplementation(project(":glsm")) { transitive = false }
     shadowImplementation(project(":lwjgl3-backend")) { transitive = false }
     shadowImplementation("net.minecraftforge:eventbus:7.0-beta.15")
 
     shadowImplementation("org.anarres:jcpp:1.4.14") // Apache 2.0
-    shadowImplementation("org.taumc:glsl-transformation-lib:0.2.0-32.g7dd88a4-GTNH") {
+    shadowImplementation("org.taumc:glsl-transformation-lib:0.2.0-33.g3ec381e") {
         exclude module: "antlr4" // we only want to shadow the runtime module
     }
     shadowImplementation("org.antlr:antlr4-runtime:4.13.2")
@@ -173,6 +173,9 @@ dependencies {
             testImplementation('org.junit.platform:junit-platform-launcher')
 
             testImplementation('com.tngtech.archunit:archunit-junit5:1.4.1')
+
+            testRuntimeOnly("it.unimi.dsi:fastutil:8.5.18")
+            testRuntimeOnly("org.joml:joml:1.10.8")
         }
     }
 

glsm/build.gradle.kts

@@ -96,6 +96,8 @@ dependencies {
     // Deps (normally from MC) - compile only, but needed at test runtime
     compileOnly("com.google.guava:guava:${property("guavaVersion")}")
     testRuntimeOnly("com.google.guava:guava:${property("guavaVersion")}")
+    testRuntimeOnly("it.unimi.dsi:fastutil:${property("fastutilVersion")}")
+    testRuntimeOnly("org.joml:joml:${property("jomlVersion")}") { isTransitive = false }
 
     // Test
     testImplementation(sourceSets["stubs"].output)

glsm/gradle.properties

@@ -4,7 +4,9 @@ celeritasVersion = 2.5.3-GTNH
 lombokVersion = 1.18.42
 log4jVersion = 2.0-beta9
 guavaVersion = 18.0
-gtnhlibVersion = 0.10.0
+gtnhlibVersion = 0.11.19
+fastutilVersion = 8.5.18
+jomlVersion = 1.10.8
 glslTransformLibVersion = 0.2.0-26.g5ee7d96-GTNH
 antlr4RuntimeVersion = 4.13.2
 jcppVersion = 1.4.14

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

@@ -1,6 +1,5 @@
 package com.gtnewhorizons.angelica.glsm;
 
-import com.gtnewhorizons.angelica.glsm.backend.RenderBackend;
 import org.taumc.glsl.ShaderParser;
 import org.taumc.glsl.Transformer;
 
@@ -114,13 +113,17 @@ public class CompatShaderTransformer {
         return result;
     }
 
-    private static boolean needsTransformation(String source) {
-        // Shaders already at 330+ core don't need compat transformation
+    public static boolean isCoreShader(String source) {
         final Matcher vm = VERSION_PATTERN.matcher(source);
         if (vm.find()) {
             final int version = Integer.parseInt(vm.group(1));
-            if (version >= 330 && "core".equals(vm.group(2))) return false;
+            return version >= 330 && "core".equals(vm.group(2));
         }
+        return false;
+    }
+
+    private static boolean needsTransformation(String source) {
+        if (isCoreShader(source)) return false;
 
         return NEEDS_TRANSFORM_PATTERN.matcher(source).find();
     }

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

@@ -7,8 +7,6 @@ import com.gtnewhorizons.angelica.glsm.states.LightModelState;
 import com.gtnewhorizons.angelica.glsm.states.LightState;
 import com.gtnewhorizons.angelica.glsm.states.MaterialState;
 import it.unimi.dsi.fastutil.ints.Int2ObjectOpenHashMap;
-
-import static com.gtnewhorizons.angelica.glsm.backend.BackendManager.RENDER_BACKEND;
 import org.joml.Matrix3f;
 import org.joml.Matrix4f;
 import org.joml.Vector3f;
@@ -17,6 +15,8 @@ import org.lwjgl.opengl.GL11;
 
 import java.nio.FloatBuffer;
 
+import static com.gtnewhorizons.angelica.glsm.backend.BackendManager.RENDER_BACKEND;
+
 /**
  * Per-program compat uniform location cache and upload manager.
  *
@@ -59,7 +59,10 @@ public class CompatUniformManager {
     static final int MAT_FIELDS = 5;
     static final int LOC_MAT_BASE = LOC_LIGHT_BASE + 2 * LIGHT_FIELDS; // 43
 
-    static final int LOC_COUNT = LOC_MAT_BASE + MAT_FIELDS; // 48
+    static final int LOC_IRIS_MODELVIEW_INVERSE = LOC_MAT_BASE + MAT_FIELDS; // 48
+    static final int LOC_IRIS_PROJECTION_INVERSE = LOC_IRIS_MODELVIEW_INVERSE + 1; // 49
+
+    static final int LOC_COUNT = LOC_IRIS_PROJECTION_INVERSE + 1; // 50
 
     private static final String[] LIGHT_FIELD_NAMES = {
         "ambient", "diffuse", "specular", "position", "halfVector",
@@ -89,6 +92,8 @@ public class CompatUniformManager {
         UNIFORM_NAMES[LOC_IRIS_NORMAL] = "iris_NormalMatrix";
         UNIFORM_NAMES[LOC_IRIS_LIGHTMAP_TEXTURE_MATRIX] = "iris_LightmapTextureMatrix";
         UNIFORM_NAMES[LOC_IRIS_TEXTURE_MATRIX] = "iris_TextureMatrix";
+        UNIFORM_NAMES[LOC_IRIS_MODELVIEW_INVERSE] = "iris_ModelViewMatrixInverse";
+        UNIFORM_NAMES[LOC_IRIS_PROJECTION_INVERSE] = "iris_ProjectionMatrixInverse";
         UNIFORM_NAMES[LOC_ALPHA_TEST_REF] = "angelica_currentAlphaTest";
         UNIFORM_NAMES[LOC_SCENE_COLOR] = "angelica_SceneColor";
         UNIFORM_NAMES[LOC_CLIP_PLANES] = "angelica_ClipPlane[0]";
@@ -103,8 +108,15 @@ public class CompatUniformManager {
         }
     }
 
-    /** Per-program cached uniform locations. Maps program ID → int[LOC_COUNT]. */
-    private static final Int2ObjectOpenHashMap<int[]> programLocations = new Int2ObjectOpenHashMap<>();
+    /** Per-program cached uniform locations + last-uploaded generations. Maps program ID -> state. */
+    private static final Int2ObjectOpenHashMap<ProgramUniforms> programUniforms = new Int2ObjectOpenHashMap<>();
+
+    private static final class ProgramUniforms {
+        final int[] locs;
+        int lastMvGen = -1, lastMvLinearGen = -1, lastProjGen = -1, lastTexMatGen = -1;
+        int lastFragmentGen = -1, lastLightingGen = -1, lastClipPlaneGen = -1;
+        ProgramUniforms(int[] locs) { this.locs = locs; }
+    }
 
     // Reusable NIO buffers for upload
     private static final FloatBuffer mat4Buf = BufferUtils.createFloatBuffer(16);
@@ -123,15 +135,6 @@ public class CompatUniformManager {
         new Matrix4f().scale(LIGHTMAP_SCALE).translate(8.0f, 8.0f, 8.0f).get(lightmapMatrixBuf);
     }
 
-    // Dirty tracking: skip uploads when state hasn't changed and program is the same
-    private static int lastProgram = -1;
-    private static int lastMvGen = -1;
-    private static int lastProjGen = -1;
-    private static int lastTexMatGen = -1;
-    private static int lastFragmentGen = -1;
-    private static int lastLightingGen = -1;
-    private static int lastClipPlaneGen = -1;
-
     private CompatUniformManager() {}
 
     /**
@@ -154,45 +157,49 @@ public class CompatUniformManager {
         }
 
         if (hasAny) {
-            programLocations.put(program, locs);
+            programUniforms.put(program, new ProgramUniforms(locs));
             GLStateManager.LOGGER.debug("CompatUniformManager: program {} has compat uniforms", program);
         }
     }
 
-    public static void onUseProgram(int program) {
-        if (program == 0) return;
+    /**
+     * Uploads the emulated uniforms.
+     *
+     * @return Whether the program needs emulation (FFP or Iris Program)
+     */
+    public static boolean refreshCompatUniforms(int program) {
+        final ProgramUniforms pu = programUniforms.get(program);
+        if (pu == null) return false;
+        final int[] locs = pu.locs;
 
-        int[] locs = programLocations.get(program);
-        if (locs == null) return;
-
-        final boolean programChanged = program != lastProgram;
-        lastProgram = program;
-
-        // Matrix uniforms — skip if generation unchanged and same program
+        // Matrix uniforms — skip if this program's storage already holds the current generation
         final int mvGen = GLStateManager.mvGeneration;
+        final int mvLinearGen = GLStateManager.mvLinearGeneration;
         final int projGen = GLStateManager.projGeneration;
         final int texMatGen = GLStateManager.texMatrixGeneration;
-        final boolean mvChanged = programChanged || mvGen != lastMvGen;
-        final boolean projChanged = programChanged || projGen != lastProjGen;
-        final boolean texMatChanged = programChanged || texMatGen != lastTexMatGen;
+        final boolean mvChanged = mvGen != pu.lastMvGen;
+        final boolean mvLinearChanged = mvLinearGen != pu.lastMvLinearGen;
+        final boolean projChanged = projGen != pu.lastProjGen;
+        final boolean texMatChanged = texMatGen != pu.lastTexMatGen;
         if (mvChanged || projChanged || texMatChanged) {
-            uploadMatrices(locs, mvChanged, projChanged, texMatChanged);
-            lastMvGen = mvGen;
-            lastProjGen = projGen;
-            lastTexMatGen = texMatGen;
+            uploadMatrices(locs, mvChanged, mvLinearChanged, projChanged, texMatChanged);
+            pu.lastMvGen = mvGen;
+            pu.lastMvLinearGen = mvLinearGen;
+            pu.lastProjGen = projGen;
+            pu.lastTexMatGen = texMatGen;
         }
 
         // Fragment-category uniforms (fog, alpha) — skip if generation unchanged
         final int fragGen = GLStateManager.fragmentGeneration;
-        if (programChanged || fragGen != lastFragmentGen) {
-            lastFragmentGen = fragGen;
+        if (fragGen != pu.lastFragmentGen) {
+            pu.lastFragmentGen = fragGen;
             uploadFragmentUniforms(locs);
         }
 
         // Lighting-derived uniforms (scene color, light sources, material)
         final int litGen = GLStateManager.lightingGeneration;
-        if (programChanged || litGen != lastLightingGen) {
-            lastLightingGen = litGen;
+        if (litGen != pu.lastLightingGen) {
+            pu.lastLightingGen = litGen;
             if (locs[LOC_SCENE_COLOR] != -1) uploadSceneColor(locs);
             uploadLightSources(locs);
             uploadMaterial(locs);
@@ -201,14 +208,16 @@ public class CompatUniformManager {
         // Clip plane equations + enabled bool — uploaded when enable state or equations change
         if (locs[LOC_CLIP_PLANES] != -1 || locs[LOC_CLIP_PLANES_ENABLED] != -1) {
             final int cpGen = GLStateManager.clipPlaneGeneration;
-            if (programChanged || cpGen != lastClipPlaneGen) {
-                lastClipPlaneGen = cpGen;
+            if (cpGen != pu.lastClipPlaneGen) {
+                pu.lastClipPlaneGen = cpGen;
                 uploadClipPlanes(locs);
             }
         }
+
+        return true;
     }
 
-    private static void uploadMatrices(int[] locs, boolean mvChanged, boolean projChanged, boolean texMatChanged) {
+    private static void uploadMatrices(int[] locs, boolean mvChanged, boolean mvLinearChanged, boolean projChanged, boolean texMatChanged) {
         final Matrix4f mv = GLStateManager.getModelViewMatrix();
         final Matrix4f proj = GLStateManager.getProjectionMatrix();
 
@@ -225,12 +234,19 @@ public class CompatUniformManager {
             }
 
             // ModelView Inverse
-            if (locs[LOC_MODELVIEW_INVERSE] != -1) {
+            if (locs[LOC_MODELVIEW_INVERSE] != -1 || locs[LOC_IRIS_MODELVIEW_INVERSE] != -1) {
                 mv.invert(scratchMatrix);
                 scratchMatrix.get(mat4Buf);
-                RENDER_BACKEND.uniformMatrix4(locs[LOC_MODELVIEW_INVERSE], false, mat4Buf);
+                if (locs[LOC_MODELVIEW_INVERSE] != -1) {
+                    RENDER_BACKEND.uniformMatrix4(locs[LOC_MODELVIEW_INVERSE], false, mat4Buf);
+                }
+                if (locs[LOC_IRIS_MODELVIEW_INVERSE] != -1) {
+                    RENDER_BACKEND.uniformMatrix4(locs[LOC_IRIS_MODELVIEW_INVERSE], false, mat4Buf);
+                }
             }
+        }
 
+        if (mvLinearChanged) {
             // Normal Matrix (inverse-transpose of upper-left 3x3 of ModelView)
             if (locs[LOC_NORMAL] != -1 || locs[LOC_IRIS_NORMAL] != -1) {
                 mv.normal(normalMatrix);
@@ -244,7 +260,6 @@ public class CompatUniformManager {
                     normalMatrix.get(mat3Buf);
                     RENDER_BACKEND.uniformMatrix3(locs[LOC_IRIS_NORMAL], false, mat3Buf);
                 }
-
             }
         }
 
@@ -261,10 +276,15 @@ public class CompatUniformManager {
             }
 
             // Projection Inverse
-            if (locs[LOC_PROJECTION_INVERSE] != -1) {
+            if (locs[LOC_PROJECTION_INVERSE] != -1 || locs[LOC_IRIS_PROJECTION_INVERSE] != -1) {
                 proj.invert(scratchMatrix);
                 scratchMatrix.get(mat4Buf);
-                RENDER_BACKEND.uniformMatrix4(locs[LOC_PROJECTION_INVERSE], false, mat4Buf);
+                if (locs[LOC_PROJECTION_INVERSE] != -1) {
+                    RENDER_BACKEND.uniformMatrix4(locs[LOC_PROJECTION_INVERSE], false, mat4Buf);
+                }
+                if (locs[LOC_IRIS_PROJECTION_INVERSE] != -1) {
+                    RENDER_BACKEND.uniformMatrix4(locs[LOC_IRIS_PROJECTION_INVERSE], false, mat4Buf);
+                }
             }
         }
 
@@ -414,14 +434,15 @@ public class CompatUniformManager {
     }
 
     public static void onDeleteProgram(int program) {
-        programLocations.remove(program);
+        programUniforms.remove(program);
     }
 
     public static boolean hasProgram(int program) {
-        return programLocations.containsKey(program);
+        return programUniforms.containsKey(program);
     }
 
     public static int[] getLocations(int program) {
-        return programLocations.get(program);
+        final ProgramUniforms pu = programUniforms.get(program);
+        return pu == null ? null : pu.locs;
     }
 }

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

@@ -111,6 +111,7 @@ public class DisplayListManager {
         int listMode,
         CommandRecorder recorder,
         List<AccumulatedDraw> draws,
+        DisplayListCallback callback,
         StackTraceElement[] stackTrace,
 
         // Debug logging fields (only used when LOG_DISPLAY_LIST_COMPILATION)
@@ -131,6 +132,19 @@ public class DisplayListManager {
         return currentRecorder != null && Thread.currentThread() == recordingThread;
     }
 
+    public static UnsupportedOperationException unsupportedInList(String what) {
+        return new UnsupportedOperationException(what + " in display lists not yet implemented - if you see this, please report! " + describeCurrentCompilation());
+    }
+
+    public static String describeCurrentCompilation() {
+        if (currentRecorder == null) {
+            return "(not compiling)";
+        }
+        final String mode = glListMode == GL11.GL_COMPILE_AND_EXECUTE ? "GL_COMPILE_AND_EXECUTE" : "GL_COMPILE";
+        final int depth = compilationStack.size() + 1;
+        return "while compiling display list " + glListId + " (" + mode + (depth > 1 ? ", nesting depth " + depth : "") + ")";
+    }
+
     public static boolean isCompileAndExecute() {
         return glListMode == GL11.GL_COMPILE_AND_EXECUTE;
     }
@@ -159,7 +173,9 @@ public class DisplayListManager {
      * Only use this if you are 100% that the transforms will not be of any use after the display list draw call.
      */
     public static void discardMatrixTransforms() {
-        resetRelativeTransform();
+        if (isRecording()) {
+            resetRelativeTransform();
+        }
     }
 
     /**
@@ -748,7 +764,7 @@ public class DisplayListManager {
             // Nested display list compilation violates OpenGL spec, but some of our optimizations require it
             // Save current compilation context and start fresh for nested list
             final CompilationContext parentContext = new CompilationContext(
-                glListId, glListMode, currentRecorder, accumulatedDraws,
+                glListId, glListMode, currentRecorder, accumulatedDraws, transformCallback,
                 compilationStackTrace, pendingTransformOps, multMatrixSources, drawRangeSources
             );
             compilationStack.push(parentContext);
@@ -784,9 +800,21 @@ public class DisplayListManager {
         if (glListMode == 0) {
             throw new RuntimeException("glEndList called outside of a display list!");
         }
+        try {
+            finishCurrentList();
+        } finally {
+            // Non-null here means finishCurrentList threw before transferring or releasing
+            // ownership of the recorder.
+            if (currentRecorder != null) {
+                currentRecorder.delete();
+            }
+            // Must always run, even when compilation fails - a leaked context leaves
+            // isRecording() true forever and every guarded GL call throws afterward.
+            popCompilationContext();
+        }
+    }
 
-        final boolean isNested = !compilationStack.isEmpty();
-
+    private static void finishCurrentList() {
         // Stop compiling mode (works for both root and nested lists now)
         TessellatorManager.stopCapturingDirect();
 
@@ -803,8 +831,9 @@ public class DisplayListManager {
         final boolean hasCommands = !commandBuffer.isEmpty();
 
         if (hasCommands) {
-            final DisplayListVBO compiledBuffers = new DisplayListVBOBuilder().addDraws(accumulatedDraws).build();
+            DisplayListVBO compiledBuffers = null;
             try {
+                compiledBuffers = new DisplayListVBOBuilder().addDraws(accumulatedDraws).build();
                 final IndexedDrawBatchBuilder indexedBuilder = commandBuffer.getIndexedDraws();
                 final List<IndexedDrawBatch> indexedBatches;
                 if (indexedBuilder.isEmpty()) {
@@ -824,16 +853,23 @@ public class DisplayListManager {
                     }
                 }
 
-                compiled = new CompiledDisplayList(commandBuffer.finish(), commandBuffer.getComplexObjects(), compiledBuffers, indexedBatches);
+                final DisplayListCommand[] complexObjects = commandBuffer.getComplexObjects();
+                compiled = new CompiledDisplayList(commandBuffer.finish(), complexObjects, compiledBuffers, indexedBatches);
+                currentRecorder = null;
             } catch (Exception e) {
                 GLStateManager.LOGGER.error("Encountered a fatal issue while trying to compile a display list.");
                 e.printStackTrace();
                 commandBuffer.delete();
+                currentRecorder = null;
+                if (compiledBuffers != null) {
+                    compiledBuffers.delete();
+                }
                 return;
             }
         } else {
             // Free the recorder even if empty
             commandBuffer.delete();
+            currentRecorder = null;
             // Empty display list - per OpenGL spec, still valid after glNewList/glEndList
             compiled = CompiledDisplayList.EMPTY;
         }
@@ -846,6 +882,10 @@ public class DisplayListManager {
         if (LOG_DISPLAY_LIST_COMPILATION) {
             logCompiledDisplayList(glListId, compiled, compilationStackTrace);
         }
+    }
+
+    private static void popCompilationContext() {
+        final boolean isNested = !compilationStack.isEmpty();
 
         // Handle nested compilation - restore parent context
         if (isNested) {
@@ -856,6 +896,7 @@ public class DisplayListManager {
             glListMode = parentContext.listMode;
             currentRecorder = parentContext.recorder;
             accumulatedDraws = parentContext.draws;
+            transformCallback = parentContext.callback;
             compilationStackTrace = parentContext.stackTrace;
             pendingTransformOps = parentContext.pendingOps;
             multMatrixSources = parentContext.matrixSources;
@@ -869,6 +910,7 @@ public class DisplayListManager {
             recordingThread = null;
             accumulatedDraws = null;
             pendingDraw = null;
+            transformCallback = null;
             compilationStackTrace = null;
             pendingTransformOps = null;
             multMatrixSources = null;

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

@@ -1,7 +1,7 @@
 package com.gtnewhorizons.angelica.glsm;
 
+import com.gtnewhorizons.angelica.glsm.ffp.VAOManager;
 import com.gtnewhorizons.angelica.glsm.recording.ImmediateModeRecorder;
-import com.gtnewhorizons.angelica.glsm.states.VertexAttribState;
 import com.gtnewhorizons.angelica.glsm.states.ViewportState;
 import org.joml.Matrix4f;
 import org.joml.Vector4f;
@@ -9,13 +9,13 @@ import org.lwjgl.opengl.GL11;
 import org.lwjgl.opengl.GL15;
 
 import java.nio.ByteBuffer;
-
-import static com.gtnewhorizons.angelica.glsm.backend.BackendManager.RENDER_BACKEND;
 import java.nio.ByteOrder;
 import java.nio.FloatBuffer;
 import java.nio.IntBuffer;
 import java.nio.ShortBuffer;
 
+import static com.gtnewhorizons.angelica.glsm.backend.BackendManager.RENDER_BACKEND;
+
 /**
  * Software emulation of GL feedback mode
  */
@@ -127,12 +127,12 @@ public class FeedbackManager {
     }
 
     private static int positionStride() {
-        final int s = VertexAttribState.get(0).effectiveStride();
+        final int s = VAOManager.getAttribEffectiveStride(0);
         return (s != 0) ? s : 12;
     }
 
     private static long positionOffset() {
-        return VertexAttribState.get(0).offset;
+        return VAOManager.getAttribOffset(0);
     }
 
     public static void processDrawArrays(int mode, int first, int count) {
@@ -151,7 +151,7 @@ public class FeedbackManager {
         computeMVP();
         final int stride = positionStride();
 
-        final int elementSize = VertexAttribState.Attrib.glTypeSizeBytes(type);
+        final int elementSize = VAOManager.Attrib.glTypeSizeBytes(type);
         final int indexByteCount = indexCount * elementSize;
         ensureIndexReadbackCapacity(indexByteCount);
         indexReadbackBuf.clear().limit(indexByteCount);
@@ -255,7 +255,7 @@ public class FeedbackManager {
     }
 
     private static void readPositionBuffer(long offset, ByteBuffer destination) {
-        final int positionVbo = VertexAttribState.get(0).vboId;
+        final int positionVbo = VAOManager.getAttribVBO(0);
         final int previousVbo = GLStateManager.getBoundVBO();
 
         if (positionVbo != 0 && positionVbo != previousVbo) {

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

@@ -1,6 +1,6 @@
 package com.gtnewhorizons.angelica.glsm;
 
-import com.gtnewhorizons.angelica.glsm.states.VertexAttribState;
+import com.gtnewhorizons.angelica.glsm.ffp.VAOManager;
 import org.lwjgl.opengl.GL11;
 import org.lwjgl.opengl.GL15;
 
@@ -9,7 +9,6 @@ import java.nio.IntBuffer;
 import java.nio.ShortBuffer;
 
 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.memAlloc;
 import static com.gtnewhorizon.gtnhlib.bytebuf.MemoryUtilities.memFree;
 import static com.gtnewhorizon.gtnhlib.bytebuf.MemoryUtilities.memGetByte;
@@ -17,6 +16,7 @@ import static com.gtnewhorizon.gtnhlib.bytebuf.MemoryUtilities.memGetInt;
 import static com.gtnewhorizon.gtnhlib.bytebuf.MemoryUtilities.memGetShort;
 import static com.gtnewhorizon.gtnhlib.bytebuf.MemoryUtilities.memPutInt;
 import static com.gtnewhorizon.gtnhlib.bytebuf.MemoryUtilities.memPutShort;
+import static com.gtnewhorizons.angelica.glsm.backend.BackendManager.RENDER_BACKEND;
 
 /**
  * Shared quad-to-triangle EBO for core profile GL_QUADS emulation.
@@ -83,6 +83,15 @@ public final class QuadConverter {
      * @param vertexCount number of vertices (must be multiple of 4)
      */
     public static void drawQuadsAsTriangles(int first, int vertexCount) {
+        drawSharedQuadEbo(first, vertexCount, 1, false);
+    }
+
+    public static void drawQuadsAsTrianglesInstanced(int first, int vertexCount, int primcount) {
+        drawSharedQuadEbo(first, vertexCount, primcount, true);
+    }
+
+    private static void drawSharedQuadEbo(int first, int vertexCount, int primcount, boolean instanced) {
+        GLStateManager.preDraw();
         assert first % 4 == 0 : "QuadConverter: first (" + first + ") must be a multiple of 4";
         assert vertexCount % 4 == 0 : "QuadConverter: vertexCount (" + vertexCount + ") must be a multiple of 4";
         final int quadCount = vertexCount / 4;
@@ -91,7 +100,11 @@ public final class QuadConverter {
         RENDER_BACKEND.bindBuffer(GL15.GL_ELEMENT_ARRAY_BUFFER, eboId);
         // Index offset: first vertex / 4 quads * 6 indices * 4 bytes per int
         final long indexOffset = (long) (first / 4) * 6 * 4;
-        RENDER_BACKEND.drawElements(GL11.GL_TRIANGLES, quadCount * 6, INDEX_TYPE, indexOffset);
+        if (instanced) {
+            RENDER_BACKEND.drawElementsInstanced(GL11.GL_TRIANGLES, quadCount * 6, INDEX_TYPE, indexOffset, primcount);
+        } else {
+            RENDER_BACKEND.drawElements(GL11.GL_TRIANGLES, quadCount * 6, INDEX_TYPE, indexOffset);
+        }
         RENDER_BACKEND.bindBuffer(GL15.GL_ELEMENT_ARRAY_BUFFER, prevEbo);
     }
 
@@ -106,6 +119,11 @@ public final class QuadConverter {
      * @param bytesPerIndex  bytes per index element
      */
     private static void uploadAndDraw(ByteBuffer dst, int triIndexCount, int indexType, int bytesPerIndex) {
+        uploadAndDraw(dst, triIndexCount, indexType, bytesPerIndex, 1, false);
+    }
+
+    private static void uploadAndDraw(ByteBuffer dst, int triIndexCount, int indexType, int bytesPerIndex, int primcount, boolean instanced) {
+        GLStateManager.preDraw();
         final int needed = triIndexCount * bytesPerIndex;
         final int prevEbo = GLStateManager.getBoundEBO();
 
@@ -124,7 +142,11 @@ public final class QuadConverter {
         }
         RENDER_BACKEND.bufferSubData(GL15.GL_ELEMENT_ARRAY_BUFFER, 0, dst);
 
-        RENDER_BACKEND.drawElements(GL11.GL_TRIANGLES, triIndexCount, indexType, 0L);
+        if (instanced) {
+            RENDER_BACKEND.drawElementsInstanced(GL11.GL_TRIANGLES, triIndexCount, indexType, 0L, primcount);
+        } else {
+            RENDER_BACKEND.drawElements(GL11.GL_TRIANGLES, triIndexCount, indexType, 0L);
+        }
 
         RENDER_BACKEND.bindBuffer(GL15.GL_ELEMENT_ARRAY_BUFFER, prevEbo);
         memFree(dst);
@@ -139,12 +161,20 @@ public final class QuadConverter {
      * @param offset     byte offset into the currently bound EBO
      */
     public static void drawQuadElementsAsTriangles(int indexCount, int type, long offset) {
+        drawQuadElementsFromEbo(indexCount, type, offset, 1, false);
+    }
+
+    public static void drawQuadElementsAsTrianglesInstanced(int indexCount, int type, long offset, int primcount) {
+        drawQuadElementsFromEbo(indexCount, type, offset, primcount, true);
+    }
+
+    private static void drawQuadElementsFromEbo(int indexCount, int type, long offset, int primcount, boolean instanced) {
         if (indexCount == 0) return;
         assert indexCount % 4 == 0 : "QuadConverter: indexCount must be multiple of 4";
         final int quadCount = indexCount / 4;
         final int triIndexCount = quadCount * 6;
 
-        final int bytesPerIndex = VertexAttribState.Attrib.glTypeSizeBytes(type);
+        final int bytesPerIndex = VAOManager.Attrib.glTypeSizeBytes(type);
 
         final ByteBuffer src = memAlloc(indexCount * bytesPerIndex);
         RENDER_BACKEND.getBufferSubData(GL15.GL_ELEMENT_ARRAY_BUFFER, offset, src);
@@ -153,7 +183,7 @@ public final class QuadConverter {
         triangulateQuads(memAddress0(src), type, memAddress0(dst), GL11.GL_UNSIGNED_INT, quadCount);
 
         memFree(src);
-        uploadAndDraw(dst, triIndexCount, GL11.GL_UNSIGNED_INT, 4);
+        uploadAndDraw(dst, triIndexCount, GL11.GL_UNSIGNED_INT, 4, primcount, instanced);
     }
 
     /**

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

@@ -7,7 +7,6 @@ import com.gtnewhorizons.angelica.glsm.dsa.DSACore;
 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.hooks.GLSMInitConfig;
 import com.gtnewhorizons.angelica.glsm.texture.TextureInfoCache;
 import lombok.Getter;
 import org.jetbrains.annotations.Nullable;

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

@@ -310,6 +310,16 @@ public final class Lwjgl2GLRenderBackend extends RenderBackend {
         GL31.glDrawElementsInstanced(mode, count, type, indices, primcount);
     }
 
+    @Override
+    public void drawArraysInstanced(int mode, int first, int count, int primcount) {
+        GL31.glDrawArraysInstanced(mode, first, count, primcount);
+    }
+
+    @Override
+    public void provokingVertex(int provokeMode) {
+        GL32.glProvokingVertex(provokeMode);
+    }
+
     @Override
     public void multiDrawElementsIndirect(int mode, int type, long indirect, int drawcount, int stride) {
         org.lwjgl.opengl.GL43.glMultiDrawElementsIndirect(mode, type, indirect, drawcount, stride);
@@ -507,11 +517,6 @@ public final class Lwjgl2GLRenderBackend extends RenderBackend {
         GL11.glPixelStorei(pname, param);
     }
 
-    @Override
-    public void pixelStoref(int pname, float param) {
-        GL11.glPixelStoref(pname, param);
-    }
-
     @Override
     public void sampleCoverage(float value, boolean invert) {
         GL13.glSampleCoverage(value, invert);
@@ -817,6 +822,11 @@ public final class Lwjgl2GLRenderBackend extends RenderBackend {
         GL20.glUniform4i(location, v0, v1, v2, v3);
     }
 
+    @Override
+    public void uniform2(int location, FloatBuffer value) {
+        GL20.glUniform2(location, value);
+    }
+
     @Override
     public void uniform3(int location, FloatBuffer value) {
         GL20.glUniform3(location, value);
@@ -827,6 +837,26 @@ public final class Lwjgl2GLRenderBackend extends RenderBackend {
         GL20.glUniform4(location, value);
     }
 
+    @Override
+    public void uniform1iv(int location, IntBuffer value) {
+        GL20.glUniform1(location, value);
+    }
+
+    @Override
+    public void uniform2iv(int location, IntBuffer value) {
+        GL20.glUniform2(location, value);
+    }
+
+    @Override
+    public void uniform3iv(int location, IntBuffer value) {
+        GL20.glUniform3(location, value);
+    }
+
+    @Override
+    public void uniform4iv(int location, IntBuffer value) {
+        GL20.glUniform4(location, value);
+    }
+
     @Override
     public void uniformMatrix3(int location, boolean transpose, FloatBuffer value) {
         GL20.glUniformMatrix3(location, transpose, value);
@@ -1043,6 +1073,11 @@ public final class Lwjgl2GLRenderBackend extends RenderBackend {
         GL30.glBindVertexArray(array);
     }
 
+    @Override
+    public boolean isVertexArray(int array) {
+        return GL30.glIsVertexArray(array);
+    }
+
     @Override
     public void vertexAttribPointer(int index, int size, int type, boolean normalized, int stride, long pointer) {
         GL20.glVertexAttribPointer(index, size, type, normalized, stride, pointer);

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

@@ -8,6 +8,8 @@ import java.nio.DoubleBuffer;
 import java.nio.FloatBuffer;
 import java.nio.IntBuffer;
 import java.nio.ShortBuffer;
+import java.util.Collections;
+import java.util.List;
 
 /**
  * Abstract rendering backend.
@@ -25,6 +27,14 @@ public abstract class RenderBackend {
     /** Higher priority backends are preferred. */
     public int getPriority() { return 0; }
 
+    public boolean supportsFileDrop() { return false; }
+
+    public void startFileDrop() {}
+
+    public void stopFileDrop() {}
+
+    public List<String> pollDroppedFiles() { return Collections.emptyList(); }
+
     public abstract int getMinGLSLVersion();
 
     public abstract void flush();
@@ -77,6 +87,8 @@ public abstract class RenderBackend {
     public abstract void multiDrawElementsIndirect(int mode, int type, long indirect, int drawcount, int stride);
     public abstract void copyBufferSubData(int readTarget, int writeTarget, long readOffset, long writeOffset, long size);
     public abstract void drawElementsInstanced(int mode, int count, int type, long indices, int primcount);
+    public abstract void drawArraysInstanced(int mode, int first, int count, int primcount);
+    public void provokingVertex(int provokeMode) {}
     public abstract void drawElementsBaseVertex(int mode, int count, int type, long indices, int baseVertex);
     public abstract void multiDrawElementsBaseVertex(int mode, long pCount, int type, long pIndices, int drawcount, long pBaseVertex);
     public abstract void drawBuffer(int mode);
@@ -115,7 +127,6 @@ public abstract class RenderBackend {
     public abstract int getTexLevelParameteri(int target, int level, int pname);
     public abstract void generateMipmap(int target);
     public abstract void pixelStorei(int pname, int param);
-    public void pixelStoref(int pname, float param) {}
     public void sampleCoverage(float value, boolean invert) {}
 
 
@@ -190,8 +201,13 @@ public abstract class RenderBackend {
     public abstract void uniform3i(int location, int v0, int v1, int v2);
     public abstract void uniform4f(int location, float v0, float v1, float v2, float v3);
     public abstract void uniform4i(int location, int v0, int v1, int v2, int v3);
+    public abstract void uniform2(int location, FloatBuffer value);
     public abstract void uniform3(int location, FloatBuffer value);
     public abstract void uniform4(int location, FloatBuffer value);
+    public abstract void uniform1iv(int location, IntBuffer value);
+    public abstract void uniform2iv(int location, IntBuffer value);
+    public abstract void uniform3iv(int location, IntBuffer value);
+    public abstract void uniform4iv(int location, IntBuffer value);
     public abstract void uniformMatrix3(int location, boolean transpose, FloatBuffer value);
     public abstract void uniformMatrix4(int location, boolean transpose, FloatBuffer value);
     public void uniformMatrix2(int location, boolean transpose, FloatBuffer matrices) {}
@@ -237,6 +253,7 @@ public abstract class RenderBackend {
     public abstract int genVertexArrays();
     public abstract void deleteVertexArrays(int array);
     public abstract void bindVertexArray(int array);
+    public abstract boolean isVertexArray(int array);
     public abstract void vertexAttribPointer(int index, int size, int type, boolean normalized, int stride, long pointer);
     public void vertexAttribPointer(int index, int size, int type, boolean normalized, int stride, ByteBuffer pointer) {
         vertexAttribPointer(index, size, type, normalized, stride, MemoryUtilities.memAddress0(pointer));

glsm/src/main/java/com/gtnewhorizons/angelica/glsm/ffp/FragmentShaderGenerator.java

@@ -78,7 +78,7 @@ public final class FragmentShaderGenerator {
     private static void emitTextureSampling(StringBuilder sb, FragmentKey key) {
         for (int i = 0; i < key.nrEnabledUnits(); i++) {
             if (!key.unitEnabled(i)) continue;
-            sb.append("  vec4 tex").append(i).append("Color = texture(u_Sampler").append(i).append(", v_TexCoord").append(i).append(".st);\n");
+            sb.append("  vec4 tex").append(i).append("Color = textureProj(u_Sampler").append(i).append(", v_TexCoord").append(i).append(");\n");
         }
     }
 

glsm/src/main/java/com/gtnewhorizons/angelica/glsm/ffp/Program.java

@@ -26,6 +26,16 @@ public class Program {
     @Getter private final VertexKey vertexKey;
     @Getter private final FragmentKey fragmentKey;
 
+    // Per-program uniform dirty-tracking
+    static final class UploadState {
+        int mvGen = -1, mvLinearGen = -1, projGen = -1, texMatGen = -1;
+        int lightingGen = -1, fragmentGen = -1, colorGen = -1, normalGen = -1, texCoordGen = -1;
+        int texGenGen = -1, clipPlaneGen = -1;
+        float lightmapX = Float.NaN, lightmapY = Float.NaN, lineWidth = Float.NaN;
+        int viewportWidth = -1, viewportHeight = -1;
+    }
+    final UploadState uploadState = new UploadState();
+
     // Uniform locations (-1 = not present in this variant)
     // Matrices
     public int locModelViewMatrix = -1;

glsm/src/main/java/com/gtnewhorizons/angelica/glsm/ffp/ShaderManager.java

@@ -1,15 +1,13 @@
 package com.gtnewhorizons.angelica.glsm.ffp;
 
 import com.gtnewhorizon.gtnhlib.client.renderer.vertex.VertexFlags;
-import com.gtnewhorizon.gtnhlib.client.renderer.vertex.VertexFormat;
 import com.gtnewhorizons.angelica.glsm.CompatUniformManager;
 import com.gtnewhorizons.angelica.glsm.GLStateManager;
 import com.gtnewhorizons.angelica.glsm.hooks.DeferredBlendHandler;
 import com.gtnewhorizons.angelica.glsm.hooks.GLSMHooks;
+import com.gtnewhorizons.angelica.glsm.hooks.GLSMInitConfig;
 import com.gtnewhorizons.angelica.glsm.stacks.Vec3fStack;
 import com.gtnewhorizons.angelica.glsm.stacks.Vec4fStack;
-import it.unimi.dsi.fastutil.ints.Int2IntOpenHashMap;
-import com.gtnewhorizons.angelica.glsm.hooks.GLSMInitConfig;
 import lombok.Getter;
 import org.joml.Vector3f;
 import org.joml.Vector4f;
@@ -22,7 +20,7 @@ import static com.gtnewhorizons.angelica.glsm.backend.BackendManager.RENDER_BACK
 /**
  * FFP shader manager
  */
-public class ShaderManager {
+public final class ShaderManager {
 
     private static final class Holder {
 
@@ -31,11 +29,11 @@ public class ShaderManager {
 
     private final ShaderCache cache = new ShaderCache();
     private final Uniforms uniforms = new Uniforms();
-    private final Int2IntOpenHashMap vaoVertexFlags = new Int2IntOpenHashMap();
 
     @Getter
     private boolean active = false;
     private Program currentProgram = null;
+    private int lastBoundProgramId = -1;
     private long currentVertexKeyPacked = Long.MIN_VALUE;
     private final long[] currentFKScratch = new long[FragmentKey.MAX_UNITS];
     private final long[] currentFKPacked = new long[FragmentKey.MAX_UNITS];
@@ -56,10 +54,8 @@ public class ShaderManager {
     public static Vector4f getCurrentTexCoord() { return currentTexCoords[0]; }
     public static Vector4f getCurrentTexCoord(int unit) { return currentTexCoords[unit]; }
     @Getter private boolean enabled = false;
-    private int currentVertexFlags = VertexFlags.TEXTURE_BIT | VertexFlags.COLOR_BIT | VertexFlags.NORMAL_BIT;
 
     private ShaderManager() {
-        vaoVertexFlags.defaultReturnValue(-1);
         if (Boolean.parseBoolean(System.getProperty("angelica.dumpShaders", "false"))) {
             cache.setDumpDir(Paths.get("ffp_shaders"));
         }
@@ -72,12 +68,6 @@ public class ShaderManager {
     public void enable() {
         enabled = true;
 
-        VertexFormat.registerSetupBufferStateOverride((format, offset) -> {
-            currentVertexFlags = format.getVertexFlags();
-            vaoVertexFlags.put(GLStateManager.getBoundVAO(), currentVertexFlags);
-            return false;
-        });
-
         GLStateManager.LOGGER.info("FFP shader emulation enabled");
     }
 
@@ -87,35 +77,39 @@ public class ShaderManager {
 
     public void activate() {
         active = true;
-        updateVariant(true, true, true, true);
-        uploadUniforms();
+        lastBoundProgramId = GLStateManager.getActiveProgram();
     }
 
     public void deactivate() {
         active = false;
         currentProgram = null;
+        lastBoundProgramId = -1;
         currentVertexKeyPacked = Long.MIN_VALUE;
         currentFKLen = 0;
     }
 
-    public void preDraw(boolean hasColor, boolean hasNormal, boolean hasTexCoord, boolean hasLightmap) {
-        GLStateManager.flushDeferredVertexAttribs();
+    public void preDraw() {
         final DeferredBlendHandler bh = GLSMHooks.blendHandler;
         if (bh != null) bh.flushDeferredBlend();
 
-        if (!active) {
-            if (enabled) {
-                final int currentProgramId = GLStateManager.getActiveProgram();
-                if (currentProgramId != 0) {
-                    CompatUniformManager.onUseProgram(currentProgramId);
-                    return;
-                }
-                active = true;
-            } else {
-                return;
+        // Handle FFP & Iris uniforms
+        final int currentProgramId = GLStateManager.getActiveProgram();
+        if (currentProgramId != 0) {
+            if (!CompatUniformManager.refreshCompatUniforms(currentProgramId)) {
+                return; // Don't emulate FFP on non-iris core shaders
             }
         }
 
+        final int vertexFlags = VAOManager.getCurrentVertexFlags();
+        final boolean hasColor = (vertexFlags & VertexFlags.COLOR_BIT) != 0;
+        final boolean hasNormal =   (vertexFlags & VertexFlags.NORMAL_BIT) != 0;
+        final boolean hasTexCoord = (vertexFlags & VertexFlags.TEXTURE_BIT) != 0;
+        final boolean hasLightmap = (vertexFlags & VertexFlags.BRIGHTNESS_BIT) != 0;
+        GLStateManager.flushDeferredVertexAttribs(hasColor, hasNormal, hasTexCoord, hasLightmap);
+
+        if (!active) return;
+
+
         final int fkLen = FragmentKey.packFromState(currentFKScratch);
         final int fragMask = FragmentKey.unitMaskFromPacked(currentFKScratch, fkLen);
         final long vkPacked = VertexKey.packFromState(hasColor, hasNormal, hasTexCoord, hasLightmap, fragMask);
@@ -127,33 +121,16 @@ public class ShaderManager {
         uploadUniforms();
     }
 
-    public void preDraw(int vertexFlags) {
-        currentVertexFlags = vertexFlags;
-        preDraw(
-            (vertexFlags & VertexFlags.COLOR_BIT) != 0,
-            (vertexFlags & VertexFlags.NORMAL_BIT) != 0,
-            (vertexFlags & VertexFlags.TEXTURE_BIT) != 0,
-            (vertexFlags & VertexFlags.BRIGHTNESS_BIT) != 0
-        );
-    }
-
-    public void preDraw() {
-        preDraw(currentVertexFlags);
-    }
-
-    private void updateVariant(boolean hasColor, boolean hasNormal, boolean hasTexCoord, boolean hasLightmap) {
-        final int fkLen = FragmentKey.packFromState(currentFKScratch);
-        final int fragMask = FragmentKey.unitMaskFromPacked(currentFKScratch, fkLen);
-        final long vkPacked = VertexKey.packFromState(hasColor, hasNormal, hasTexCoord, hasLightmap, fragMask);
-        commitVariant(vkPacked, fkLen);
-    }
-
     private void commitVariant(long vkPacked, int fkLen) {
         currentVertexKeyPacked = vkPacked;
         System.arraycopy(currentFKScratch, 0, currentFKPacked, 0, fkLen);
         currentFKLen = fkLen;
         currentProgram = cache.getOrCreate(vkPacked, currentFKPacked, currentFKLen);
-        RENDER_BACKEND.useProgram(currentProgram.getProgramId());
+        final int programId = currentProgram.getProgramId();
+        if (programId != lastBoundProgramId) {
+            RENDER_BACKEND.useProgram(programId);
+            lastBoundProgramId = programId;
+        }
     }
 
     private void uploadUniforms() {
@@ -180,22 +157,6 @@ public class ShaderManager {
     public static void bumpNormalGeneration() { normalGeneration++; }
     public static void bumpTexCoordGeneration() { texCoordGeneration++; }
 
-    public void enableClientVertexFlag(int flag) {currentVertexFlags |= flag;}
-    public void disableClientVertexFlag(int flag) {currentVertexFlags &= ~flag;}
-    public int getCurrentVertexFlags() {return currentVertexFlags;}
-    public void setCurrentVertexFlags(int flags) {currentVertexFlags = flags;}
-
-    public void onBindVertexArray(int vaoId) {
-        final int flags = vaoVertexFlags.get(vaoId);
-        if (flags != -1) {
-            currentVertexFlags = flags;
-        }
-    }
-
-    public void onDeleteVertexArray(int vaoId) {
-        vaoVertexFlags.remove(vaoId);
-    }
-
     public void destroy() {
         cache.destroy();
         uniforms.destroy();

glsm/src/main/java/com/gtnewhorizons/angelica/glsm/ffp/Uniforms.java

@@ -46,116 +46,99 @@ public class Uniforms {
     private static final double LN2 = java.lang.Math.log(2.0);
     private static final double SQRT_LN2 = java.lang.Math.sqrt(LN2);
 
-    // Dirty tracking: last-uploaded generation per category + program ID.
-    // Program change forces full re-upload since uniform locations differ.
-    private int lastProgramId = -1;
-    private int lastMvGen = -1;
-    private int lastProjGen = -1;
-    private int lastTexMatGen = -1;
-    private int lastLightingGen = -1;
-    private int lastFragmentGen = -1;
-    private int lastColorGen = -1;
-    private int lastNormalGen = -1;
-    private int lastTexCoordGen = -1;
-    private float lastLightmapX = Float.NaN;
-    private float lastLightmapY = Float.NaN;
-    private int lastTexGenGen = -1;
-    private int lastClipPlaneGen = -1;
-    private float lastLineWidth = Float.NaN;
-    private int lastViewportWidth = -1;
-    private int lastViewportHeight = -1;
-
     /**
      * Upload all relevant uniforms to the given FFP program based on current GLSM state.
      * Uses generation counters to skip categories that haven't changed since last upload.
      */
     public void upload(Program program) {
-        final boolean programChanged = program.getProgramId() != lastProgramId;
-        lastProgramId = program.getProgramId();
+        final Program.UploadState st = program.uploadState;
 
         final int mvGen = GLStateManager.mvGeneration;
+        final int mvLinearGen = GLStateManager.mvLinearGeneration;
         final int projGen = GLStateManager.projGeneration;
         final int texMatGen = GLStateManager.texMatrixGeneration;
-        final boolean mvChanged = programChanged || mvGen != lastMvGen;
-        final boolean projChanged = programChanged || projGen != lastProjGen;
-        final boolean texMatChanged = programChanged || texMatGen != lastTexMatGen;
+        final boolean mvChanged = mvGen != st.mvGen;
+        final boolean mvLinearChanged = mvLinearGen != st.mvLinearGen;
+        final boolean projChanged = projGen != st.projGen;
+        final boolean texMatChanged = texMatGen != st.texMatGen;
         if (mvChanged || projChanged || texMatChanged) {
-            uploadMatrices(program, mvChanged, projChanged, texMatChanged);
-            lastMvGen = mvGen;
-            lastProjGen = projGen;
-            lastTexMatGen = texMatGen;
+            uploadMatrices(program, mvChanged, mvLinearChanged, projChanged, texMatChanged);
+            st.mvGen = mvGen;
+            st.mvLinearGen = mvLinearGen;
+            st.projGen = projGen;
+            st.texMatGen = texMatGen;
         }
 
         if (program.getVertexKey().lightingEnabled()) {
             final int litGen = GLStateManager.lightingGeneration;
-            if (programChanged || litGen != lastLightingGen) {
+            if (litGen != st.lightingGen) {
                 uploadLighting(program);
-                lastLightingGen = litGen;
+                st.lightingGen = litGen;
             }
         }
 
         // Current color/normal/texcoord — skip if generation unchanged
         if (!program.getVertexKey().hasVertexColor()) {
             final int colorGen = GLStateManager.colorGeneration;
-            if (programChanged || colorGen != lastColorGen) {
+            if (colorGen != st.colorGen) {
                 uploadCurrentColor(program);
-                lastColorGen = colorGen;
+                st.colorGen = colorGen;
             }
         }
 
         if (!program.getVertexKey().hasVertexNormal() && program.getVertexKey().lightingEnabled()) {
             final int normalGen = ShaderManager.getNormalGeneration();
-            if (programChanged || normalGen != lastNormalGen) {
+            if (normalGen != st.normalGen) {
                 uploadCurrentNormal(program);
-                lastNormalGen = normalGen;
+                st.normalGen = normalGen;
             }
         }
 
         if (program.getVertexKey().anyUnitTexCoordEnabled()) {
             final int texGen = ShaderManager.getTexCoordGeneration();
-            if (programChanged || texGen != lastTexCoordGen) {
+            if (texGen != st.texCoordGen) {
                 uploadCurrentTexCoords(program);
-                lastTexCoordGen = texGen;
+                st.texCoordGen = texGen;
             }
         }
 
         if (program.getVertexKey().lightmapEnabled() && !program.getVertexKey().hasVertexLightmap()) {
-            if (programChanged || GLSMConfig.lastBrightnessX != lastLightmapX || GLSMConfig.lastBrightnessY != lastLightmapY) {
+            if (GLSMConfig.lastBrightnessX != st.lightmapX || GLSMConfig.lastBrightnessY != st.lightmapY) {
                 uploadCurrentLightmapCoord(program);
-                lastLightmapX = GLSMConfig.lastBrightnessX;
-                lastLightmapY = GLSMConfig.lastBrightnessY;
+                st.lightmapX = GLSMConfig.lastBrightnessX;
+                st.lightmapY = GLSMConfig.lastBrightnessY;
             }
         }
 
         if (program.getVertexKey().texGenEnabled()) {
             final int tgGen = GLStateManager.texGenGeneration;
-            if (programChanged || tgGen != lastTexGenGen) {
+            if (tgGen != st.texGenGen) {
                 uploadTexGen(program);
-                lastTexGenGen = tgGen;
+                st.texGenGen = tgGen;
             }
         }
 
         if (program.getVertexKey().clipPlanesEnabled()) {
             final int cpGen = GLStateManager.clipPlaneGeneration;
-            if (programChanged || cpGen != lastClipPlaneGen) {
+            if (cpGen != st.clipPlaneGen) {
                 uploadClipPlanes(program);
-                lastClipPlaneGen = cpGen;
+                st.clipPlaneGen = cpGen;
             }
         }
 
         final int fragGen = GLStateManager.fragmentGeneration;
-        if (programChanged || fragGen != lastFragmentGen) {
+        if (fragGen != st.fragmentGen) {
             uploadFragmentUniforms(program);
-            lastFragmentGen = fragGen;
+            st.fragmentGen = fragGen;
         }
 
         // Wide line emulation uniforms
         if (program.locLineWidth != -1 && program.locViewportSize != -1) {
-            uploadWideLineUniforms(program, programChanged);
+            uploadWideLineUniforms(program);
         }
     }
 
-    private void uploadMatrices(Program program, boolean mvChanged, boolean projChanged, boolean texMatChanged) {
+    private void uploadMatrices(Program program, boolean mvChanged, boolean mvLinearChanged, boolean projChanged, boolean texMatChanged) {
         final Matrix4f mv = GLStateManager.getModelViewMatrix();
         final Matrix4f proj = GLStateManager.getProjectionMatrix();
 
@@ -165,7 +148,9 @@ public class Uniforms {
                 mv.get(mat4Buf);
                 RENDER_BACKEND.uniformMatrix4(program.locModelViewMatrix, false, mat4Buf);
             }
+        }
 
+        if (mvLinearChanged) {
             // Normal matrix = inverse transpose of upper-left 3x3 of ModelView
             if (program.locNormalMatrix != -1 || program.locNormalScale != -1) {
                 mv.normal(normalMatrix);
@@ -314,12 +299,13 @@ public class Uniforms {
         if (program.locCurrentColor == -1) return;
         // Upload the current color from GLSM
         final var color = GLStateManager.getColor();
+        tempVec4.set(
+            Math.clamp(0f, 1f, color.getRed()),
+            Math.clamp(0f, 1f, color.getGreen()),
+            Math.clamp(0f, 1f, color.getBlue()),
+            Math.clamp(0f, 1f, color.getAlpha()));
         vec4Buf.clear();
-        vec4Buf.put(Math.clamp(0f, 1f, color.getRed()));
-        vec4Buf.put(Math.clamp(0f, 1f, color.getGreen()));
-        vec4Buf.put(Math.clamp(0f, 1f, color.getBlue()));
-        vec4Buf.put(Math.clamp(0f, 1f, color.getAlpha()));
-        vec4Buf.flip();
+        tempVec4.get(vec4Buf);
         RENDER_BACKEND.uniform4(program.locCurrentColor, vec4Buf);
     }
 
@@ -342,10 +328,7 @@ public class Uniforms {
         // Upload current normal from FFPShaderManager's tracked normal
         final var normal = ShaderManager.getCurrentNormal();
         vec3Buf.clear();
-        vec3Buf.put(normal.x);
-        vec3Buf.put(normal.y);
-        vec3Buf.put(normal.z);
-        vec3Buf.flip();
+        normal.get(vec3Buf);
         RENDER_BACKEND.uniform3(program.locCurrentNormal, vec3Buf);
     }
 
@@ -381,10 +364,7 @@ public class Uniforms {
     private void uploadPlane(int loc, float[] plane) {
         if (loc == -1) return;
         vec4Buf.clear();
-        vec4Buf.put(plane[0]);
-        vec4Buf.put(plane[1]);
-        vec4Buf.put(plane[2]);
-        vec4Buf.put(plane[3]);
+        vec4Buf.put(plane, 0, 4);
         vec4Buf.flip();
         RENDER_BACKEND.uniform4(loc, vec4Buf);
     }
@@ -470,29 +450,26 @@ public class Uniforms {
         }
     }
 
-    private void uploadWideLineUniforms(Program program, boolean programChanged) {
+    private void uploadWideLineUniforms(Program program) {
+        final Program.UploadState st = program.uploadState;
         final float lineWidth = GLStateManager.getLineState().getWidth();
-        if (programChanged || lineWidth != lastLineWidth) {
+        if (lineWidth != st.lineWidth) {
             RENDER_BACKEND.uniform1f(program.locLineWidth, lineWidth);
-            lastLineWidth = lineWidth;
+            st.lineWidth = lineWidth;
         }
         final int vw = GLStateManager.getViewportState().width;
         final int vh = GLStateManager.getViewportState().height;
-        if (programChanged || vw != lastViewportWidth || vh != lastViewportHeight) {
+        if (vw != st.viewportWidth || vh != st.viewportHeight) {
             RENDER_BACKEND.uniform2f(program.locViewportSize, vw, vh);
-            lastViewportWidth = vw;
-            lastViewportHeight = vh;
+            st.viewportWidth = vw;
+            st.viewportHeight = vh;
         }
     }
 
     private void uploadVec4(int loc, Vector4f v) {
         if (loc == -1) return;
         vec4Buf.clear();
-        vec4Buf.put(v.x);
-        vec4Buf.put(v.y);
-        vec4Buf.put(v.z);
-        vec4Buf.put(v.w);
-        vec4Buf.flip();
+        v.get(vec4Buf);
         RENDER_BACKEND.uniform4(loc, vec4Buf);
     }
 

glsm/src/main/java/com/gtnewhorizons/angelica/glsm/ffp/VAOManager.java

@@ -0,0 +1,312 @@
+package com.gtnewhorizons.angelica.glsm.ffp;
+
+import com.gtnewhorizons.angelica.glsm.GLStateManager;
+import it.unimi.dsi.fastutil.ints.Int2ObjectOpenHashMap;
+import org.lwjgl.opengl.GL11;
+import org.lwjgl.opengl.GL15;
+
+import javax.annotation.Nullable;
+import java.nio.ByteBuffer;
+
+import static com.gtnewhorizons.angelica.glsm.backend.BackendManager.RENDER_BACKEND;
+
+public final class VAOManager {
+    public static final int MAX_ATTRIBS = 16;
+
+    public static final Int2ObjectOpenHashMap<VAOData> vaoMap = new Int2ObjectOpenHashMap<>();
+
+    private static VAOData current = null;
+    private static int currentVertexFlags = 0;
+    private static Attrib[] currentAttribs = null;
+    public static int boundEBO = 0;
+
+    private static int clientSideEnabledCount = 0;
+
+
+    public static void init(int defaultVAO) {
+        final VAOData data = new VAOData();
+        current = data;
+        currentAttribs = data.attribs;
+        vaoMap.put(defaultVAO, data);
+    }
+
+    public static void onBindEBO(int ebo) {
+        boundEBO = ebo;
+    }
+
+    public static void onBindVertexArrayPre(int vaoId) {
+        // Save old VAO data
+        if (current != null) {
+            current.vertexFlags = currentVertexFlags;
+            current.ebo = boundEBO;
+            current.attribs = currentAttribs;
+        }
+
+        VAOData data = vaoMap.get(vaoId);
+        if (data == null) {
+            data = new VAOData();
+            vaoMap.put(vaoId, data);
+        }
+        current = data;
+        currentVertexFlags = data.vertexFlags;
+        currentAttribs = data.attribs;
+        boundEBO = data.ebo;
+
+        recomputeClientSideCount();
+    }
+
+    public static void onDeleteVertexArray(int vaoId) {
+        vaoMap.remove(vaoId);
+    }
+
+    public static void enableClientVertexFlag(int flag) { currentVertexFlags |= flag; }
+    public static void disableClientVertexFlag(int flag) { currentVertexFlags &= ~flag; }
+    public static int getCurrentVertexFlags() { return currentVertexFlags; }
+    public static void setCurrentVertexFlags(int flags) { currentVertexFlags = flags; }
+
+    public static final class VAOData {
+        public Attrib[] attribs;
+        public int vertexFlags;
+        public int ebo;
+
+        public VAOData() {
+            attribs = new Attrib[MAX_ATTRIBS];
+        }
+    }
+
+    public static void setAttribute(int index, int size, int type, boolean normalized, int stride, long offset, int vboId) {
+        if (index < 0 || index >= MAX_ATTRIBS) return;
+        final Attrib a = getAttrib(index);
+        final boolean wasClient = a.clientPointer != null;
+        a.size = size;
+        a.type = type;
+        a.normalized = normalized;
+        a.stride = stride;
+        a.offset = offset;
+        a.vboId = vboId;
+        a.clientPointer = null;
+        if (wasClient && a.enabled) {
+            clientSideEnabledCount--;
+        }
+    }
+
+    public static void setAttribute(int index, int size, int type, boolean normalized, int stride, ByteBuffer pointer) {
+        if (index < 0 || index >= MAX_ATTRIBS) return;
+        final Attrib a = getAttrib(index);
+        final boolean wasClient = a.clientPointer != null;
+        a.size = size;
+        a.type = type;
+        a.normalized = normalized;
+        a.stride = stride;
+        a.offset = 0;
+        a.vboId = 0;
+        a.clientPointer = pointer;
+        if (!wasClient && a.enabled) {
+            clientSideEnabledCount++;
+        }
+    }
+
+    public static void setEnabled(int index, boolean enabled) {
+        if (index < 0 || index >= MAX_ATTRIBS) return;
+        final Attrib a = getAttrib(index);
+        if (a.clientPointer != null && a.enabled != enabled) {
+            clientSideEnabledCount += enabled ? 1 : -1;
+        }
+        a.enabled = enabled;
+    }
+
+    public static void enableAttribute(int index) {
+        if (index < 0 || index >= MAX_ATTRIBS) return;
+        final Attrib a = getAttrib(index);
+        if (a.clientPointer != null && !a.enabled) {
+            clientSideEnabledCount++;
+        }
+        a.enabled = true;
+    }
+
+    public static void disableAttribute(int index) {
+        if (index < 0 || index >= MAX_ATTRIBS) return;
+        final Attrib a = getAttrib(index);
+        if (a.clientPointer != null && a.enabled) {
+            clientSideEnabledCount--;
+        }
+        a.enabled = false;
+    }
+
+    // Lazily allocate each attrib. Most VAOs don't even have 4 attribs, let alone 16.
+    private static Attrib getAttrib(int index) {
+        Attrib a = currentAttribs[index];
+        if (a == null) {
+            a = new Attrib();
+            currentAttribs[index] = a;
+        }
+        return a;
+    }
+
+    public static boolean isClientSideAttrib(int index) {
+        final Attrib attrib = currentAttribs[index];
+        return attrib != null && attrib.isClientSide();
+    }
+
+    public static int getAttribEffectiveStride(int index) {
+        final Attrib attrib = currentAttribs[index];
+        return attrib != null ? attrib.effectiveStride() : 0;
+    }
+
+    public static long getAttribOffset(int index) {
+        final Attrib attrib = currentAttribs[index];
+        return attrib != null ? attrib.offset : 0;
+    }
+
+    public static int getAttribVBO(int index) {
+        final Attrib attrib = currentAttribs[index];
+        return attrib != null ? attrib.vboId : 0;
+    }
+
+    public static @Nullable Attrib get(int index) {
+        return currentAttribs[index];
+    }
+
+
+
+    private static void recomputeClientSideCount() {
+        int count = 0;
+        for (int i = 0; i < MAX_ATTRIBS; i++) {
+            if (isClientSideAttrib(i)) count++;
+        }
+        clientSideEnabledCount = count;
+    }
+
+    /**
+     * Returns true if any currently enabled vertex attribute was registered without a VBO
+     * (i.e. as a client-side pointer). In core profile, such attribs are treated as null
+     * offsets into a non-existent buffer, causing a native crash at draw time.
+     */
+    public static boolean hasAnyClientSideEnabledAttrib() {
+        return clientSideEnabledCount > 0;
+    }
+
+    /**
+     * If any enabled vertex attribute uses a client-side pointer (no VBO), upload all such
+     * attribs into a shared stream VBO so the draw succeeds under core profile.
+     */
+    private static int clientArraysVBO = 0;
+    private static int clientArraysVBOCapacity = 0;
+    private static final int[] clientArraysVBOOffsets = new int[VAOManager.MAX_ATTRIBS];
+
+    public static void uploadClientArraysToVBO() {
+        int totalBytes = 0;
+        for (int i = 0; i < VAOManager.MAX_ATTRIBS; i++) {
+            clientArraysVBOOffsets[i] = -1;
+            final VAOManager.Attrib a = VAOManager.get(i);
+            if (a == null || !a.enabled || a.clientPointer == null) continue;
+            clientArraysVBOOffsets[i] = totalBytes;
+            totalBytes += a.clientPointer.remaining();
+        }
+        if (totalBytes == 0) return;
+
+        if (clientArraysVBO == 0) {
+            clientArraysVBO = RENDER_BACKEND.genBuffers();
+        }
+
+        final int savedVBO = GLStateManager.getBoundVBO();
+        GLStateManager.glBindBuffer(GL15.GL_ARRAY_BUFFER, clientArraysVBO);
+
+        if (totalBytes > clientArraysVBOCapacity) {
+            int newCap = Math.max(4096, clientArraysVBOCapacity);
+            while (newCap < totalBytes) newCap *= 2;
+            clientArraysVBOCapacity = newCap;
+        }
+        RENDER_BACKEND.bufferData(GL15.GL_ARRAY_BUFFER, clientArraysVBOCapacity, GL15.GL_STREAM_DRAW);
+
+        for (int i = 0; i < VAOManager.MAX_ATTRIBS; i++) {
+            if (clientArraysVBOOffsets[i] < 0) continue;
+            final VAOManager.Attrib a = VAOManager.get(i);
+            RENDER_BACKEND.bufferSubData(GL15.GL_ARRAY_BUFFER, clientArraysVBOOffsets[i], a.clientPointer.duplicate());
+            RENDER_BACKEND.vertexAttribPointer(i, a.size, a.type, a.normalized, a.stride, (long) clientArraysVBOOffsets[i]);
+        }
+
+        GLStateManager.glBindBuffer(GL15.GL_ARRAY_BUFFER, savedVBO);
+    }
+
+
+    public static final class Attrib {
+        public boolean enabled;
+        public int size;
+        public int type;
+        public boolean normalized;
+        public int stride;
+        public long offset;
+        public int vboId;
+        public ByteBuffer clientPointer;
+
+        public boolean isClientSide() {
+            return enabled && clientPointer != null;
+        }
+
+        public void reset() {
+            enabled = false;
+            size = 0;
+            type = 0;
+            normalized = false;
+            stride = 0;
+            offset = 0;
+            vboId = 0;
+            clientPointer = null;
+        }
+
+        public int effectiveStride() {
+            return (stride != 0) ? stride : size * typeSizeBytes();
+        }
+
+        public int typeSizeBytes() {
+            return glTypeSizeBytes(type);
+        }
+
+        public static int glTypeSizeBytes(int glType) {
+            return switch (glType) {
+                case GL11.GL_FLOAT, GL11.GL_INT, GL11.GL_UNSIGNED_INT -> 4;
+                case GL11.GL_DOUBLE -> 8;
+                case GL11.GL_SHORT, GL11.GL_UNSIGNED_SHORT -> 2;
+                case GL11.GL_BYTE, GL11.GL_UNSIGNED_BYTE -> 1;
+                default -> 4;
+            };
+        }
+
+        public float readComponent(ByteBuffer buf, int base, int component) {
+            return readComponent(type, normalized, buf, base, component);
+        }
+
+        public static float readComponent(int type, boolean normalized, ByteBuffer buf, int base, int component) {
+            return switch (type) {
+                case GL11.GL_FLOAT -> buf.getFloat(base + component * 4);
+                case GL11.GL_DOUBLE -> (float) buf.getDouble(base + component * 8);
+                case GL11.GL_INT -> {
+                    final int v = buf.getInt(base + component * 4);
+                    yield normalized ? v / (float) Integer.MAX_VALUE : (float) v;
+                }
+                case GL11.GL_UNSIGNED_INT -> {
+                    final int v = buf.getInt(base + component * 4);
+                    yield normalized ? (v & 0xFFFFFFFFL) / (float) 0xFFFFFFFFL : (float) (v & 0xFFFFFFFFL);
+                }
+                case GL11.GL_SHORT -> {
+                    final short v = buf.getShort(base + component * 2);
+                    yield normalized ? v / (float) Short.MAX_VALUE : (float) v;
+                }
+                case GL11.GL_UNSIGNED_SHORT -> {
+                    final int v = buf.getShort(base + component * 2) & 0xFFFF;
+                    yield normalized ? v / (float) 0xFFFF : (float) v;
+                }
+                case GL11.GL_BYTE -> {
+                    final byte v = buf.get(base + component);
+                    yield normalized ? v / 127.0f : (float) v;
+                }
+                case GL11.GL_UNSIGNED_BYTE -> {
+                    final int v = buf.get(base + component) & 0xFF;
+                    yield normalized ? v / 255.0f : (float) v;
+                }
+                default -> 0.0f;
+            };
+        }
+    }
+}

glsm/src/main/java/com/gtnewhorizons/angelica/glsm/ffp/VertexKey.java

@@ -49,6 +49,7 @@ public final class VertexKey {
     private static final int BIT_WIDE_LINE           = 36;
     // Per-unit texmat enable: bits 37-40 (unit 0..3). Unit 1 is the lightmap matrix.
     private static final int BIT_UNIT_TEXMAT_BASE    = 37;
+    private static final int BIT_UNIT23_UV_FROM_UNIT0 = 41;
 
     public static final int TG_NONE                  = 0;
     public static final int TG_OBJ_LINEAR            = 1;
@@ -85,6 +86,7 @@ public final class VertexKey {
     public boolean hasVertexNormal()       { return bit(BIT_HAS_VERTEX_NORMAL); }
     public boolean hasVertexTexCoord()     { return bit(BIT_HAS_VERTEX_TEX); }
     public boolean hasVertexLightmap()    { return bit(BIT_HAS_VERTEX_LIGHTMAP); }
+    public boolean unit23UvFromUnit0()     { return bit(BIT_UNIT23_UV_FROM_UNIT0); }
     /** Color material mode (CM_AMBIENT, CM_DIFFUSE, CM_SPECULAR, CM_EMISSION, CM_AMBIENT_AND_DIFFUSE). Only meaningful when colorMaterialEnabled(). */
     public int colorMaterialMode()        { return (int)((packed >> BIT_COLOR_MAT_MODE) & 0x7); }
 
@@ -213,6 +215,10 @@ public final class VertexKey {
         if (hasTexCoord) bits |= (1L << BIT_HAS_VERTEX_TEX);
         if (hasLightmap) bits |= (1L << BIT_HAS_VERTEX_LIGHTMAP);
 
+        if (GLStateManager.consumeUnit23TexCoordSetDuringDraw() && hasTexCoord) {
+            bits |= (1L << BIT_UNIT23_UV_FROM_UNIT0);
+        }
+
         if (GLStateManager.anyClipPlaneEnabled()) {
             bits |= (1L << BIT_CLIP_PLANES);
         }

glsm/src/main/java/com/gtnewhorizons/angelica/glsm/ffp/VertexShaderGenerator.java

@@ -106,8 +106,8 @@ public final class VertexShaderGenerator {
         if (key.unitTexCoordEnabled(0) && !key.hasVertexTexCoord()) {
             sb.append("uniform vec4 u_CurrentTexCoord0;\n");
         }
-        if (key.unitTexCoordEnabled(2)) sb.append("uniform vec4 u_CurrentTexCoord2;\n");
-        if (key.unitTexCoordEnabled(3)) sb.append("uniform vec4 u_CurrentTexCoord3;\n");
+        if (key.unitTexCoordEnabled(2) && !key.unit23UvFromUnit0()) sb.append("uniform vec4 u_CurrentTexCoord2;\n");
+        if (key.unitTexCoordEnabled(3) && !key.unit23UvFromUnit0()) sb.append("uniform vec4 u_CurrentTexCoord3;\n");
 
         if (key.lightmapEnabled() && !key.hasVertexLightmap()) {
             sb.append("uniform vec2 u_CurrentLightmapCoord;\n");
@@ -363,8 +363,10 @@ public final class VertexShaderGenerator {
 
         for (int i = 2; i < VertexKey.MAX_UNITS; i++) {
             if (!key.unitTexCoordEnabled(i)) continue;
-            final String src = "u_CurrentTexCoord" + i;
-            if (key.unitTexMatEnabled(i)) {
+            final String src = key.unit23UvFromUnit0()
+                ? "vec4(a_TexCoord0, 0.0, 1.0)"
+                : "u_CurrentTexCoord" + i;
+            if (!key.unit23UvFromUnit0() && key.unitTexMatEnabled(i)) {
                 sb.append("  v_TexCoord").append(i).append(" = u_TextureMatrix").append(i).append(" * ").append(src).append(";\n");
             } else {
                 sb.append("  v_TexCoord").append(i).append(" = ").append(src).append(";\n");
@@ -383,7 +385,7 @@ public final class VertexShaderGenerator {
 
         emitTexGenComponent(sb, key.texGenModeS(), "s", "S", key);
         emitTexGenComponent(sb, key.texGenModeT(), "t", "T", key);
-        emitTexGenComponent(sb, key.texGenModeR(), "r", "R", key);
+        emitTexGenComponent(sb, key.texGenModeR(), "p", "R", key);
         emitTexGenComponent(sb, key.texGenModeQ(), "q", "Q", key);
 
         // Always apply texture matrix when texgen is active (forced on in VertexKey)

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

@@ -35,11 +35,30 @@ public final class EcosystemNarrowRules {
             "com.fiskmods.lightsabers.asm.transformers"
         )),
 
+        new NarrowRule("FiskHeroes", "com.fiskmods.heroes.asm", List.of(
+            "com.fiskmods.heroes.asm.SHLoadingPlugin",
+            "com.fiskmods.heroes.asm.transformers"
+        )),
+
         new NarrowRule("Ears", "com.unascribed.ears", List.of(
             "com.unascribed.ears.asm",
             "com.unascribed.ears.common.agent"
         )),
 
+        new NarrowRule("FoamFix", "pl.asie.foamfix", List.of(
+            "pl.asie.foamfix.bugfixmod",
+            "pl.asie.foamfix.coremod",
+            "pl.asie.foamfix.forkage",
+            "pl.asie.foamfix.ghostbuster",
+            "pl.asie.foamfix.FoamFixMod",
+            "pl.asie.foamfix.HackyMessageFactoryWrapper",
+            "pl.asie.foamfix.LaunchWrapperRuntimeFix",
+            "pl.asie.foamfix.ProxyClient",
+            "pl.asie.foamfix.ProxyCommon",
+            "pl.asie.foamfix.repack.com.unascribed.ears.asm",
+            "pl.asie.foamfix.repack.com.unascribed.ears.common.agent"
+        )),
+
         new NarrowRule("Alfheim", "alfheim.common.core.asm.hook", List.of(
             "alfheim.common.core.asm.hook.AlfheimFieldHookHandler",
             "alfheim.common.core.asm.hook.AlfheimHPHooks",

glsm/src/main/java/com/gtnewhorizons/angelica/glsm/recording/AttribSnapshot.java

@@ -2,7 +2,7 @@ package com.gtnewhorizons.angelica.glsm.recording;
 
 import com.gtnewhorizon.gtnhlib.bytebuf.MemoryUtilities;
 import com.gtnewhorizons.angelica.glsm.GLStateManager;
-import com.gtnewhorizons.angelica.glsm.states.VertexAttribState;
+import com.gtnewhorizons.angelica.glsm.ffp.VAOManager;
 import it.unimi.dsi.fastutil.ints.Int2LongOpenHashMap;
 import it.unimi.dsi.fastutil.ints.Int2ObjectOpenHashMap;
 import org.lwjgl.opengl.GL15;
@@ -15,11 +15,11 @@ public final class AttribSnapshot {
 
     public record AttribDesc(int location, int size, int type, boolean normalized, int stride, long offset, int sourceVboId, ByteBuffer readBuffer, long readBufferBaseOffset) {
         public int effectiveStride() {
-            return stride != 0 ? stride : size * VertexAttribState.Attrib.glTypeSizeBytes(type);
+            return stride != 0 ? stride : size * VAOManager.Attrib.glTypeSizeBytes(type);
         }
 
         public int typeSizeBytes() {
-            return VertexAttribState.Attrib.glTypeSizeBytes(type);
+            return VAOManager.Attrib.glTypeSizeBytes(type);
         }
     }
 
@@ -56,7 +56,7 @@ public final class AttribSnapshot {
      * allocating any hashmaps. A second distinct VBO promotes to the map-backed fallback.
      */
     public static AttribSnapshot snapshot(int firstVertex, int vertexCount) {
-        final AttribDesc[] out = new AttribDesc[VertexAttribState.MAX_ATTRIBS];
+        final AttribDesc[] out = new AttribDesc[VAOManager.MAX_ATTRIBS];
         final List<ByteBuffer> allocated = new ArrayList<>();
         final int prevVBO = GLStateManager.getBoundVBO();
 
@@ -67,11 +67,11 @@ public final class AttribSnapshot {
         Int2ObjectOpenHashMap<long[]> vboRanges = null;
 
         final long lastVtx = (long) firstVertex + vertexCount - 1;
-        for (int i = 0; i < VertexAttribState.MAX_ATTRIBS; i++) {
-            final VertexAttribState.Attrib a = VertexAttribState.get(i);
-            if (!a.enabled || a.vboId == 0) continue;
+        for (int i = 0; i < VAOManager.MAX_ATTRIBS; i++) {
+            final VAOManager.Attrib a = VAOManager.get(i);
+            if (a == null || !a.enabled || a.vboId == 0) continue;
             final int stride = a.effectiveStride();
-            final long typeBytes = (long) a.size * VertexAttribState.Attrib.glTypeSizeBytes(a.type);
+            final long typeBytes = (long) a.size * VAOManager.Attrib.glTypeSizeBytes(a.type);
             final long start = a.offset + (long) firstVertex * stride;
             final long end = a.offset + lastVtx * stride + typeBytes;
 
@@ -103,9 +103,9 @@ public final class AttribSnapshot {
         Int2LongOpenHashMap vboReadOffsets = null;
 
         try {
-            for (int i = 0; i < VertexAttribState.MAX_ATTRIBS; i++) {
-                final VertexAttribState.Attrib a = VertexAttribState.get(i);
-                if (!a.enabled) continue;
+            for (int i = 0; i < VAOManager.MAX_ATTRIBS; i++) {
+                final VAOManager.Attrib a = VAOManager.get(i);
+                if (a == null || !a.enabled) continue;
 
                 if (a.vboId != 0) {
                     ByteBuffer buf;

glsm/src/main/java/com/gtnewhorizons/angelica/glsm/recording/CommandRecorder.java

@@ -653,12 +653,19 @@ public final class CommandRecorder {
         for (IndexedDrawCapture c : indexedDraws.getCaptures()) {
             c.freeBuffers();
         }
-        memFree(buffer);
+        for (DisplayListCommand cmd : complexObjects) {
+            cmd.delete();
+        }
+        complexObjects.clear();
+        if (buffer != null) {
+            memFree(buffer);
+            buffer = null;
+        }
     }
 
     /**
      * Deletes every allocated object & returns a ByteBuffer with the capacity equal to its limit.
-     * This CommandRecorder object cannot be used after calling this anymore.
+     * This CommandRecorder object cannot be used after calling this anymore
      */
     public ByteBuffer finish() {
         for (IndexedDrawCapture c : indexedDraws.getCaptures()) {
@@ -666,7 +673,10 @@ public final class CommandRecorder {
         }
         final int size = size();
         buffer.limit(size);
-        return memRealloc(buffer, size);
+        final ByteBuffer out = memRealloc(buffer, size);
+        buffer = null;
+        complexObjects.clear();
+        return out;
     }
 
     public DisplayListCommand[] getComplexObjects() {

glsm/src/main/java/com/gtnewhorizons/angelica/glsm/recording/ImmediateModeRecorder.java

@@ -5,7 +5,7 @@ import com.gtnewhorizon.gtnhlib.client.renderer.DirectTessellator;
 import com.gtnewhorizon.gtnhlib.client.renderer.TessellatorManager;
 import com.gtnewhorizon.gtnhlib.client.renderer.vertex.VertexFormatElement.Usage;
 import com.gtnewhorizons.angelica.glsm.GLStateManager;
-import com.gtnewhorizons.angelica.glsm.states.VertexAttribState;
+import com.gtnewhorizons.angelica.glsm.ffp.VAOManager;
 import org.lwjgl.opengl.GL11;
 
 import java.nio.ByteBuffer;
@@ -293,7 +293,39 @@ public final class ImmediateModeRecorder {
     }
 
     private static float readComponent(AttribReader r, int base, int component) {
-        return VertexAttribState.Attrib.readComponent(r.type, r.normalized, r.data, base, component);
+        return VAOManager.Attrib.readComponent(r.type, r.normalized, r.data, base, component);
+    }
+
+    public static float readComponent(int type, boolean normalized, ByteBuffer buf, int base, int component) {
+        return switch (type) {
+            case GL11.GL_FLOAT -> buf.getFloat(base + component * 4);
+            case GL11.GL_DOUBLE -> (float) buf.getDouble(base + component * 8);
+            case GL11.GL_INT -> {
+                final int v = buf.getInt(base + component * 4);
+                yield normalized ? v / (float) Integer.MAX_VALUE : (float) v;
+            }
+            case GL11.GL_UNSIGNED_INT -> {
+                final int v = buf.getInt(base + component * 4);
+                yield normalized ? (v & 0xFFFFFFFFL) / (float) 0xFFFFFFFFL : (float) (v & 0xFFFFFFFFL);
+            }
+            case GL11.GL_SHORT -> {
+                final short v = buf.getShort(base + component * 2);
+                yield normalized ? v / (float) Short.MAX_VALUE : (float) v;
+            }
+            case GL11.GL_UNSIGNED_SHORT -> {
+                final int v = buf.getShort(base + component * 2) & 0xFFFF;
+                yield normalized ? v / (float) 0xFFFF : (float) v;
+            }
+            case GL11.GL_BYTE -> {
+                final byte v = buf.get(base + component);
+                yield normalized ? v / 127.0f : (float) v;
+            }
+            case GL11.GL_UNSIGNED_BYTE -> {
+                final int v = buf.get(base + component) & 0xFF;
+                yield normalized ? v / 255.0f : (float) v;
+            }
+            default -> 0.0f;
+        };
     }
 
 }

glsm/src/main/java/com/gtnewhorizons/angelica/glsm/recording/commands/AttribLayoutKey.java

@@ -1,6 +1,6 @@
 package com.gtnewhorizons.angelica.glsm.recording.commands;
 
-import com.gtnewhorizons.angelica.glsm.states.VertexAttribState;
+import com.gtnewhorizons.angelica.glsm.ffp.VAOManager;
 
 import java.util.Arrays;
 
@@ -24,7 +24,7 @@ public final class AttribLayoutKey {
         int base = 0;
         int maxAlign = 1;
         for (int i = 0; i < n; i++) {
-            final int typeSize = VertexAttribState.Attrib.glTypeSizeBytes(types[i]);
+            final int typeSize = VAOManager.Attrib.glTypeSizeBytes(types[i]);
             if (typeSize > maxAlign) maxAlign = typeSize;
             base = (base + typeSize - 1) & -typeSize;
             off[i] = base;

glsm/src/main/java/com/gtnewhorizons/angelica/glsm/recording/commands/IndexedDrawCapture.java

@@ -3,14 +3,14 @@ package com.gtnewhorizons.angelica.glsm.recording.commands;
 import com.gtnewhorizon.gtnhlib.bytebuf.MemoryUtilities;
 import com.gtnewhorizons.angelica.glsm.GLStateManager;
 import com.gtnewhorizons.angelica.glsm.QuadConverter;
+import com.gtnewhorizons.angelica.glsm.ffp.VAOManager;
 import com.gtnewhorizons.angelica.glsm.recording.AttribSnapshot;
-import com.gtnewhorizons.angelica.glsm.states.VertexAttribState;
 import org.lwjgl.opengl.GL11;
 import org.lwjgl.opengl.GL15;
 
 import java.nio.ByteBuffer;
-import java.util.concurrent.ConcurrentHashMap;
 import java.util.Set;
+import java.util.concurrent.ConcurrentHashMap;
 
 import static com.gtnewhorizon.gtnhlib.bytebuf.MemoryUtilities.memGetInt;
 import static com.gtnewhorizon.gtnhlib.bytebuf.MemoryUtilities.memGetLong;
@@ -68,7 +68,7 @@ public final class IndexedDrawCapture {
             warnOnce("quads-misaligned", "[IndexedDrawCapture] GL_QUADS with indicesCount={} not a multiple of 4 — skipping", indicesCount);
             return null;
         }
-        final int srcIndexSize = VertexAttribState.Attrib.glTypeSizeBytes(srcIndexType);
+        final int srcIndexSize = VAOManager.Attrib.glTypeSizeBytes(srcIndexType);
         if (srcIndexSize <= 0) return null;
 
         final int prevEBO = GLStateManager.getBoundEBO();
@@ -106,7 +106,7 @@ public final class IndexedDrawCapture {
             snap = AttribSnapshot.snapshot(minVtx, vertexCount);
 
             int enabledCount = 0;
-            for (int i = 0; i < VertexAttribState.MAX_ATTRIBS; i++) {
+            for (int i = 0; i < VAOManager.MAX_ATTRIBS; i++) {
                 if (snap.get(i) != null) enabledCount++;
             }
             if (enabledCount == 0) {
@@ -118,7 +118,7 @@ public final class IndexedDrawCapture {
             final int[] types = new int[enabledCount];
             final boolean[] normalized = new boolean[enabledCount];
             int k = 0;
-            for (int i = 0; i < VertexAttribState.MAX_ATTRIBS; i++) {
+            for (int i = 0; i < VAOManager.MAX_ATTRIBS; i++) {
                 final AttribSnapshot.AttribDesc d = snap.get(i);
                 if (d == null) continue;
                 locations[k] = i;

glsm/src/main/java/com/gtnewhorizons/angelica/glsm/recording/commands/PixelDataSnapshot.java

@@ -0,0 +1,52 @@
+package com.gtnewhorizons.angelica.glsm.recording.commands;
+
+import org.jetbrains.annotations.Nullable;
+
+import java.nio.ByteBuffer;
+import java.nio.ByteOrder;
+import java.nio.DoubleBuffer;
+import java.nio.FloatBuffer;
+import java.nio.IntBuffer;
+
+import static com.gtnewhorizon.gtnhlib.bytebuf.MemoryUtilities.memAlloc;
+
+final class PixelDataSnapshot {
+    private PixelDataSnapshot() {}
+
+    static @Nullable ByteBuffer copy(@Nullable ByteBuffer pixels) {
+        if (pixels == null) return null;
+        final int pos = pixels.position();
+        final ByteBuffer out = memAlloc(pixels.remaining()).order(ByteOrder.nativeOrder());
+        out.put(pixels);
+        out.flip();
+        pixels.position(pos);
+        return out;
+    }
+
+    static @Nullable ByteBuffer copy(@Nullable IntBuffer pixels) {
+        if (pixels == null) return null;
+        final int pos = pixels.position();
+        final ByteBuffer out = memAlloc(pixels.remaining() * 4).order(ByteOrder.nativeOrder());
+        out.asIntBuffer().put(pixels);
+        pixels.position(pos);
+        return out;
+    }
+
+    static @Nullable ByteBuffer copy(@Nullable FloatBuffer pixels) {
+        if (pixels == null) return null;
+        final int pos = pixels.position();
+        final ByteBuffer out = memAlloc(pixels.remaining() * 4).order(ByteOrder.nativeOrder());
+        out.asFloatBuffer().put(pixels);
+        pixels.position(pos);
+        return out;
+    }
+
+    static @Nullable ByteBuffer copy(@Nullable DoubleBuffer pixels) {
+        if (pixels == null) return null;
+        final int pos = pixels.position();
+        final ByteBuffer out = memAlloc(pixels.remaining() * 8).order(ByteOrder.nativeOrder());
+        out.asDoubleBuffer().put(pixels);
+        pixels.position(pos);
+        return out;
+    }
+}

glsm/src/main/java/com/gtnewhorizons/angelica/glsm/recording/commands/TexImage2DCmd.java

@@ -2,15 +2,17 @@ package com.gtnewhorizons.angelica.glsm.recording.commands;
 
 import com.gtnewhorizons.angelica.glsm.GLDebug;
 import com.gtnewhorizons.angelica.glsm.GLStateManager;
+import com.gtnewhorizons.angelica.glsm.states.PixelUnpackState;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 
 import java.nio.ByteBuffer;
-import java.nio.ByteOrder;
 import java.nio.DoubleBuffer;
 import java.nio.FloatBuffer;
 import java.nio.IntBuffer;
 
+import static com.gtnewhorizon.gtnhlib.bytebuf.MemoryUtilities.memFree;
+
 /**
  * Command: glTexImage2D(target, level, internalformat, width, height, border, format, type, pixels)
  * Specifies a two-dimensional texture image during display list playback.
@@ -24,92 +26,58 @@ public record TexImage2DCmd(
     int border,
     int format,
     int type,
-    @Nullable byte[] pixelData
+    @Nullable ByteBuffer pixels,
+    @Nullable PixelUnpackState unpack
 ) implements DisplayListCommand {
 
-    /**
-     * Create command from IntBuffer
-     */
-    public static TexImage2DCmd fromIntBuffer(int target, int level, int internalformat, int width, int height, int border, int format, int type, @Nullable IntBuffer pixels) {
-        byte[] data = null;
-        if (pixels != null) {
-            int pos = pixels.position();
-            int limit = pixels.limit();
-            int size = (limit - pos) * 4; // 4 bytes per int
-            data = new byte[size];
-            ByteBuffer bb = ByteBuffer.wrap(data).order(ByteOrder.nativeOrder());
-            bb.asIntBuffer().put(pixels);
-            pixels.position(pos); // Restore position
+    public TexImage2DCmd {
+        if (pixels == null) {
+            unpack = null;
         }
-        return new TexImage2DCmd(target, level, internalformat, width, height, border, format, type, data);
     }
 
-    /**
-     * Create command from FloatBuffer
-     */
-    public static TexImage2DCmd fromFloatBuffer(int target, int level, int internalformat, int width, int height, int border, int format, int type, @Nullable FloatBuffer pixels) {
-        byte[] data = null;
-        if (pixels != null) {
-            int pos = pixels.position();
-            int limit = pixels.limit();
-            int size = (limit - pos) * 4; // 4 bytes per float
-            data = new byte[size];
-            ByteBuffer bb = ByteBuffer.wrap(data).order(ByteOrder.nativeOrder());
-            bb.asFloatBuffer().put(pixels);
-            pixels.position(pos); // Restore position
-        }
-        return new TexImage2DCmd(target, level, internalformat, width, height, border, format, type, data);
+    public static TexImage2DCmd fromIntBuffer(int target, int level, int internalformat, int width, int height, int border, int format, int type, @Nullable IntBuffer pixels, PixelUnpackState unpack) {
+        return new TexImage2DCmd(target, level, internalformat, width, height, border, format, type, PixelDataSnapshot.copy(pixels), unpack);
     }
 
-    /**
-     * Create command from DoubleBuffer
-     */
-    public static TexImage2DCmd fromDoubleBuffer(int target, int level, int internalformat, int width, int height, int border, int format, int type, @Nullable DoubleBuffer pixels) {
-        byte[] data = null;
-        if (pixels != null) {
-            int pos = pixels.position();
-            int limit = pixels.limit();
-            int size = (limit - pos) * 8; // 8 bytes per double
-            data = new byte[size];
-            ByteBuffer bb = ByteBuffer.wrap(data).order(ByteOrder.nativeOrder());
-            bb.asDoubleBuffer().put(pixels);
-            pixels.position(pos); // Restore position
-        }
-        return new TexImage2DCmd(target, level, internalformat, width, height, border, format, type, data);
+    public static TexImage2DCmd fromFloatBuffer(int target, int level, int internalformat, int width, int height, int border, int format, int type, @Nullable FloatBuffer pixels, PixelUnpackState unpack) {
+        return new TexImage2DCmd(target, level, internalformat, width, height, border, format, type, PixelDataSnapshot.copy(pixels), unpack);
     }
 
-    /**
-     * Create command from ByteBuffer
-     */
-    public static TexImage2DCmd fromByteBuffer(int target, int level, int internalformat, int width, int height, int border, int format, int type, @Nullable ByteBuffer pixels) {
-        byte[] data = null;
-        if (pixels != null) {
-            int pos = pixels.position();
-            int limit = pixels.limit();
-            int size = limit - pos;
-            data = new byte[size];
-            pixels.get(data);
-            pixels.position(pos); // Restore position
-        }
-        return new TexImage2DCmd(target, level, internalformat, width, height, border, format, type, data);
+    public static TexImage2DCmd fromDoubleBuffer(int target, int level, int internalformat, int width, int height, int border, int format, int type, @Nullable DoubleBuffer pixels, PixelUnpackState unpack) {
+        return new TexImage2DCmd(target, level, internalformat, width, height, border, format, type, PixelDataSnapshot.copy(pixels), unpack);
+    }
+
+    public static TexImage2DCmd fromByteBuffer(int target, int level, int internalformat, int width, int height, int border, int format, int type, @Nullable ByteBuffer pixels, PixelUnpackState unpack) {
+        return new TexImage2DCmd(target, level, internalformat, width, height, border, format, type, PixelDataSnapshot.copy(pixels), unpack);
     }
 
     @Override
     public void execute() {
-        ByteBuffer buffer = null;
-        if (pixelData != null) {
-            buffer = ByteBuffer.allocateDirect(pixelData.length).order(ByteOrder.nativeOrder());
-            buffer.put(pixelData);
-            buffer.flip();
+        if (pixels == null) {
+            GLStateManager.glTexImage2D(target, level, internalformat, width, height, border, format, type, (ByteBuffer) null);
+            return;
+        }
+        GLStateManager.forcePixelUnpackState(unpack);
+        try {
+            GLStateManager.glTexImage2D(target, level, internalformat, width, height, border, format, type, pixels);
+        } finally {
+            GLStateManager.restorePixelUnpackState(unpack);
+        }
+    }
+
+    @Override
+    public void delete() {
+        if (pixels != null) {
+            memFree(pixels);
         }
-        GLStateManager.glTexImage2D(target, level, internalformat, width, height, border, format, type, buffer);
     }
 
     @Override
     public @NotNull String toString() {
-        String dataStr = pixelData != null ? (pixelData.length + " bytes") : "null";
-        return String.format("TexImage2D(target=%s, level=%d, internalformat=%s, %dx%d, border=%d, format=%s, type=%s, data=%s)",
+        String dataStr = pixels != null ? (pixels.remaining() + " bytes") : "null";
+        return String.format("TexImage2D(target=%s, level=%d, internalformat=%s, %dx%d, border=%d, format=%s, type=%s, data=%s, unpack=%s)",
             GLDebug.getTextureTargetName(target), level, GLDebug.getTextureFormatName(internalformat),
-            width, height, border, GLDebug.getTextureFormatName(format), GLDebug.getDataTypeName(type), dataStr);
+            width, height, border, GLDebug.getTextureFormatName(format), GLDebug.getDataTypeName(type), dataStr, unpack);
     }
 }

glsm/src/main/java/com/gtnewhorizons/angelica/glsm/recording/commands/TexSubImage2DCmd.java

@@ -2,15 +2,17 @@ package com.gtnewhorizons.angelica.glsm.recording.commands;
 
 import com.gtnewhorizons.angelica.glsm.GLDebug;
 import com.gtnewhorizons.angelica.glsm.GLStateManager;
+import com.gtnewhorizons.angelica.glsm.states.PixelUnpackState;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 
 import java.nio.ByteBuffer;
-import java.nio.ByteOrder;
 import java.nio.DoubleBuffer;
 import java.nio.FloatBuffer;
 import java.nio.IntBuffer;
 
+import static com.gtnewhorizon.gtnhlib.bytebuf.MemoryUtilities.memFree;
+
 /**
  * Command: glTexSubImage2D(target, level, xoffset, yoffset, width, height, format, type, pixels)
  * Updates a portion of an existing two-dimensional texture image during display list playback.
@@ -24,92 +26,58 @@ public record TexSubImage2DCmd(
     int height,
     int format,
     int type,
-    @Nullable byte[] pixelData
+    @Nullable ByteBuffer pixels,
+    @Nullable PixelUnpackState unpack
 ) implements DisplayListCommand {
 
-    /**
-     * Create command from IntBuffer
-     */
-    public static TexSubImage2DCmd fromIntBuffer(int target, int level, int xoffset, int yoffset, int width, int height, int format, int type, @Nullable IntBuffer pixels) {
-        byte[] data = null;
-        if (pixels != null) {
-            int pos = pixels.position();
-            int limit = pixels.limit();
-            int size = (limit - pos) * 4; // 4 bytes per int
-            data = new byte[size];
-            ByteBuffer bb = ByteBuffer.wrap(data).order(ByteOrder.nativeOrder());
-            bb.asIntBuffer().put(pixels);
-            pixels.position(pos); // Restore position
+    public TexSubImage2DCmd {
+        if (pixels == null) {
+            unpack = null;
         }
-        return new TexSubImage2DCmd(target, level, xoffset, yoffset, width, height, format, type, data);
     }
 
-    /**
-     * Create command from FloatBuffer
-     */
-    public static TexSubImage2DCmd fromFloatBuffer(int target, int level, int xoffset, int yoffset, int width, int height, int format, int type, @Nullable FloatBuffer pixels) {
-        byte[] data = null;
-        if (pixels != null) {
-            int pos = pixels.position();
-            int limit = pixels.limit();
-            int size = (limit - pos) * 4; // 4 bytes per float
-            data = new byte[size];
-            ByteBuffer bb = ByteBuffer.wrap(data).order(ByteOrder.nativeOrder());
-            bb.asFloatBuffer().put(pixels);
-            pixels.position(pos); // Restore position
-        }
-        return new TexSubImage2DCmd(target, level, xoffset, yoffset, width, height, format, type, data);
+    public static TexSubImage2DCmd fromIntBuffer(int target, int level, int xoffset, int yoffset, int width, int height, int format, int type, @Nullable IntBuffer pixels, PixelUnpackState unpack) {
+        return new TexSubImage2DCmd(target, level, xoffset, yoffset, width, height, format, type, PixelDataSnapshot.copy(pixels), unpack);
     }
 
-    /**
-     * Create command from DoubleBuffer
-     */
-    public static TexSubImage2DCmd fromDoubleBuffer(int target, int level, int xoffset, int yoffset, int width, int height, int format, int type, @Nullable DoubleBuffer pixels) {
-        byte[] data = null;
-        if (pixels != null) {
-            int pos = pixels.position();
-            int limit = pixels.limit();
-            int size = (limit - pos) * 8; // 8 bytes per double
-            data = new byte[size];
-            ByteBuffer bb = ByteBuffer.wrap(data).order(ByteOrder.nativeOrder());
-            bb.asDoubleBuffer().put(pixels);
-            pixels.position(pos); // Restore position
-        }
-        return new TexSubImage2DCmd(target, level, xoffset, yoffset, width, height, format, type, data);
+    public static TexSubImage2DCmd fromFloatBuffer(int target, int level, int xoffset, int yoffset, int width, int height, int format, int type, @Nullable FloatBuffer pixels, PixelUnpackState unpack) {
+        return new TexSubImage2DCmd(target, level, xoffset, yoffset, width, height, format, type, PixelDataSnapshot.copy(pixels), unpack);
     }
 
-    /**
-     * Create command from ByteBuffer
-     */
-    public static TexSubImage2DCmd fromByteBuffer(int target, int level, int xoffset, int yoffset, int width, int height, int format, int type, @Nullable ByteBuffer pixels) {
-        byte[] data = null;
-        if (pixels != null) {
-            int pos = pixels.position();
-            int limit = pixels.limit();
-            int size = limit - pos;
-            data = new byte[size];
-            pixels.get(data);
-            pixels.position(pos); // Restore position
-        }
-        return new TexSubImage2DCmd(target, level, xoffset, yoffset, width, height, format, type, data);
+    public static TexSubImage2DCmd fromDoubleBuffer(int target, int level, int xoffset, int yoffset, int width, int height, int format, int type, @Nullable DoubleBuffer pixels, PixelUnpackState unpack) {
+        return new TexSubImage2DCmd(target, level, xoffset, yoffset, width, height, format, type, PixelDataSnapshot.copy(pixels), unpack);
+    }
+
+    public static TexSubImage2DCmd fromByteBuffer(int target, int level, int xoffset, int yoffset, int width, int height, int format, int type, @Nullable ByteBuffer pixels, PixelUnpackState unpack) {
+        return new TexSubImage2DCmd(target, level, xoffset, yoffset, width, height, format, type, PixelDataSnapshot.copy(pixels), unpack);
     }
 
     @Override
     public void execute() {
-        ByteBuffer buffer = null;
-        if (pixelData != null) {
-            buffer = ByteBuffer.allocateDirect(pixelData.length).order(ByteOrder.nativeOrder());
-            buffer.put(pixelData);
-            buffer.flip();
+        if (pixels == null) {
+            GLStateManager.glTexSubImage2D(target, level, xoffset, yoffset, width, height, format, type, (ByteBuffer) null);
+            return;
+        }
+        GLStateManager.forcePixelUnpackState(unpack);
+        try {
+            GLStateManager.glTexSubImage2D(target, level, xoffset, yoffset, width, height, format, type, pixels);
+        } finally {
+            GLStateManager.restorePixelUnpackState(unpack);
+        }
+    }
+
+    @Override
+    public void delete() {
+        if (pixels != null) {
+            memFree(pixels);
         }
-        GLStateManager.glTexSubImage2D(target, level, xoffset, yoffset, width, height, format, type, buffer);
     }
 
     @Override
     public @NotNull String toString() {
-        String dataStr = pixelData != null ? (pixelData.length + " bytes") : "null";
-        return String.format("TexSubImage2D(target=%s, level=%d, offset=(%d,%d), %dx%d, format=%s, type=%s, data=%s)",
+        String dataStr = pixels != null ? (pixels.remaining() + " bytes") : "null";
+        return String.format("TexSubImage2D(target=%s, level=%d, offset=(%d,%d), %dx%d, format=%s, type=%s, data=%s, unpack=%s)",
             GLDebug.getTextureTargetName(target), level, xoffset, yoffset, width, height,
-            GLDebug.getTextureFormatName(format), GLDebug.getDataTypeName(type), dataStr);
+            GLDebug.getTextureFormatName(format), GLDebug.getDataTypeName(type), dataStr, unpack);
     }
 }

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

@@ -46,6 +46,8 @@ public class GLSMRedirector {
     private static final String ARBMultiTexture = "org/lwjgl/opengl/ARBMultitexture";
     private static final String ARBShaderObjects = "org/lwjgl/opengl/ARBShaderObjects";
     private static final String ARBInstancedArrays = "org/lwjgl/opengl/ARBInstancedArrays";
+    private static final String ARBDrawInstanced = "org/lwjgl/opengl/ARBDrawInstanced";
+    private static final String EXTDrawInstanced = "org/lwjgl/opengl/EXTDrawInstanced";
 
     // Redirect VAO related calls from NHLib
     private static final String UniversalVAO = "com/gtnewhorizon/gtnhlib/client/opengl/UniversalVAO";
@@ -126,6 +128,7 @@ public class GLSMRedirector {
             .add("glFrustum")
             .add("glGetBoolean")
             .add("glGetFloat")
+            .add("glGetFloatv", "glGetFloat")
             .add("glGetInteger")
             .add("glGetLight")
             .add("glGetMaterial")
@@ -296,6 +299,7 @@ public class GLSMRedirector {
             .add("glStencilOpSeparate")
             .add("glUseProgram")
             .add("glShaderSource")
+            .add("nglShaderSource")
             .add("glLinkProgram")
             .add("glDeleteProgram")
             .add("glCreateShader")
@@ -321,6 +325,7 @@ public class GLSMRedirector {
             .add("glUniformMatrix2")
             .add("glUniformMatrix3")
             .add("glUniformMatrix4")
+            .add("glUniformMatrix4fv", "glUniformMatrix4")
             .add("glDeleteShader")
             .add("glGetShaderi")
             .add("glGetShaderInfoLog")
@@ -342,6 +347,7 @@ public class GLSMRedirector {
             .add("glGenVertexArrays")
             .add("glBindVertexArray")
             .add("glDeleteVertexArrays")
+            .add("glIsVertexArray")
             .add("glBindFramebuffer")
             .add("glDeleteFramebuffers")
             .add("glGenFramebuffers")
@@ -352,7 +358,8 @@ public class GLSMRedirector {
             .add("glGetFramebufferAttachmentParameteri")
             .add("glBlitFramebuffer");
         final var gl31 = RedirectMap.newMap()
-            .add("glDrawElementsInstanced");
+            .add("glDrawElementsInstanced")
+            .add("glDrawArraysInstanced");
         final var gl32 = RedirectMap.newMap()
             .add("glFramebufferTexture");
         final var gl33 = RedirectMap.newMap()
@@ -455,6 +462,14 @@ public class GLSMRedirector {
         methodRedirects.put(ARBInstancedArrays, RedirectMap.newMap()
             .add("glVertexAttribDivisorARB")
         );
+        methodRedirects.put(ARBDrawInstanced, RedirectMap.newMap()
+            .add("glDrawArraysInstancedARB", "glDrawArraysInstanced")
+            .add("glDrawElementsInstancedARB", "glDrawElementsInstanced")
+        );
+        methodRedirects.put(EXTDrawInstanced, RedirectMap.newMap()
+            .add("glDrawArraysInstancedEXT", "glDrawArraysInstanced")
+            .add("glDrawElementsInstancedEXT", "glDrawElementsInstanced")
+        );
 
         // APPLE
         methodRedirects.put(APPLEVertexArrayObject, RedirectMap.newMap()
@@ -587,18 +602,16 @@ public class GLSMRedirector {
                         }
                     } else {
                         final Map<String, String> redirects = mNode.owner.startsWith(GL_PREFIX) ? glMethodRedirects : methodRedirects.get(mNode.owner);
-                        if (redirects != null) {
-                            final String glsmName = redirects.get(mNode.name);
-                            if (glsmName != null) {
-                                if (LOG_SPAM) {
-                                    final String shortOwner = mNode.owner.substring(mNode.owner.lastIndexOf("/") + 1);
-                                    LOGGER.info("Redirecting call in {} from {}.{}{} to GLStateManager.{}{}", transformedName, shortOwner, mNode.name, mNode.desc, glsmName, mNode.desc);
-                                }
-                                mNode.owner = GLStateManager;
-                                mNode.name = glsmName;
-                                changed = true;
-                                redirectInMethod = true;
+                        final String glsmName = redirects != null ? redirects.get(mNode.name) : null;
+                        if (glsmName != null) {
+                            if (LOG_SPAM) {
+                                final String shortOwner = mNode.owner.substring(mNode.owner.lastIndexOf("/") + 1);
+                                LOGGER.info("Redirecting call in {} from {}.{}{} to GLStateManager.{}{}", transformedName, shortOwner, mNode.name, mNode.desc, glsmName, mNode.desc);
                             }
+                            mNode.owner = GLStateManager;
+                            mNode.name = glsmName;
+                            changed = true;
+                            redirectInMethod = true;
                         }
                     }
                     // Redirect <init> calls for quadric classes
@@ -617,8 +630,7 @@ public class GLSMRedirector {
                     for (int i = 0; i < dynNode.bsmArgs.length; i++) {
                         if (!(dynNode.bsmArgs[i] instanceof Handle handle)) continue;
                         final Map<String, String> redirects = handle.getOwner().startsWith(GL_PREFIX) ? glMethodRedirects : methodRedirects.get(handle.getOwner());
-                        if (redirects == null) continue;
-                        final String glsmName = redirects.get(handle.getName());
+                        final String glsmName = redirects != null ? redirects.get(handle.getName()) : null;
                         if (glsmName == null) continue;
                         if (LOG_SPAM) {
                             final String shortOwner = handle.getOwner().substring(handle.getOwner().lastIndexOf("/") + 1);

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

@@ -27,65 +27,75 @@ public class LightModelState implements ISettableState<LightModelState> {
         twoSide = 0.0F;
     }
 
-    public void setAmbient(FloatBuffer newBuffer) {
+    public boolean setAmbient(FloatBuffer newBuffer) {
         vector4f.set(newBuffer);
         if (GLStateManager.shouldBypassCache() || !this.ambient.equals(vector4f)) {
             this.ambient.set(vector4f);
+            return true;
         }
+        return false;
     }
 
-    public void setAmbient(IntBuffer newBuffer) {
+    public boolean setAmbient(IntBuffer newBuffer) {
         vector4i.set(newBuffer);
         vector4f.set(i2f(vector4i.x), i2f(vector4i.y), i2f(vector4i.z), i2f(vector4i.w));
         if (GLStateManager.shouldBypassCache() || !this.ambient.equals(vector4f)) {
             this.ambient.set(vector4f);
+            return true;
         }
+        return false;
     }
 
-    public void setColorControl(int val) {
+    public boolean setColorControl(int val) {
         if (GLStateManager.shouldBypassCache() || this.colorControl != val) {
             this.colorControl = val;
+            return true;
         }
+        return false;
     }
 
-    public void setColorControl(IntBuffer newBuffer) {
-        setColorControl(newBuffer.get());
+    public boolean setColorControl(IntBuffer newBuffer) {
+        return setColorControl(newBuffer.get());
     }
 
-    public void setLocalViewer(float val) {
+    public boolean setLocalViewer(float val) {
         if (GLStateManager.shouldBypassCache() || Float.compare(this.localViewer, val) != 0) {
             this.localViewer = val;
+            return true;
         }
+        return false;
     }
 
-    public void setLocalViewer(FloatBuffer newBuffer) {
-        setLocalViewer(newBuffer.get());
+    public boolean setLocalViewer(FloatBuffer newBuffer) {
+        return setLocalViewer(newBuffer.get());
     }
 
-    public void setLocalViewer(IntBuffer newBuffer) {
-        setLocalViewer((float) newBuffer.get());
+    public boolean setLocalViewer(IntBuffer newBuffer) {
+        return setLocalViewer((float) newBuffer.get());
     }
 
-    public void setLocalViewer(int val) {
-        setLocalViewer((float) val);
+    public boolean setLocalViewer(int val) {
+        return setLocalViewer((float) val);
     }
 
-    public void setTwoSide(float val) {
+    public boolean setTwoSide(float val) {
         if (GLStateManager.shouldBypassCache() || Float.compare(this.twoSide, val) != 0) {
             this.twoSide = val;
+            return true;
         }
+        return false;
     }
 
-    public void setTwoSide(FloatBuffer newBuffer) {
-        setTwoSide(newBuffer.get());
+    public boolean setTwoSide(FloatBuffer newBuffer) {
+        return setTwoSide(newBuffer.get());
     }
 
-    public void setTwoSide(IntBuffer newBuffer) {
-        setTwoSide((float) newBuffer.get());
+    public boolean setTwoSide(IntBuffer newBuffer) {
+        return setTwoSide((float) newBuffer.get());
     }
 
-    public void setTwoSide(int val) {
-        setTwoSide((float) val);
+    public boolean setTwoSide(int val) {
+        return setTwoSide((float) val);
     }
 
     @Override

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

@@ -17,6 +17,7 @@ public class LightState implements ISettableState<LightState> {
 
     private static final Vector4i vector4i = new Vector4i();
     private static final Vector4f vector4f = new Vector4f();
+    private static final Vector3f vector3f = new Vector3f();
     private static final Vector3i vector3i = new Vector3i();
     private static final Matrix3f matrix3f = new Matrix3f();
 
@@ -27,6 +28,10 @@ public class LightState implements ISettableState<LightState> {
     public final Vector4f specular;
     public final Vector4f position;
     public final Vector3f spotDirection;
+    private final Vector4f rawPosition;
+    private int posMvGeneration = -1;
+    private final Vector3f rawSpotDirection;
+    private int spotDirLinearGeneration = -1;
     public float spotExponent;
     public float spotCutoff;
     public float spotCosCutoff;
@@ -66,178 +71,221 @@ public class LightState implements ISettableState<LightState> {
         this.linearAttenuation = linearAttenuation;
         this.quadraticAttenuation = quadraticAttenuation;
 
+        this.rawPosition = new Vector4f(position);
         this.position = position;
         this.position.mul(GLStateManager.getModelViewMatrix());
+        this.posMvGeneration = GLStateManager.mvGeneration;
 
+        this.rawSpotDirection = new Vector3f(spotDirection);
         this.spotDirection = spotDirection;
         GLStateManager.getModelViewMatrix().get3x3(matrix3f);
         this.spotDirection.mul(matrix3f);
+        this.spotDirLinearGeneration = GLStateManager.mvLinearGeneration;
     }
 
-    public void setAmbient(FloatBuffer newBuffer) {
+    public boolean setAmbient(FloatBuffer newBuffer) {
         vector4f.set(newBuffer);
         if (GLStateManager.shouldBypassCache() || !this.ambient.equals(vector4f)) {
             this.ambient.set(vector4f);
+            return true;
         }
+        return false;
     }
 
-    public void setAmbient(IntBuffer newBuffer) {
+    public boolean setAmbient(IntBuffer newBuffer) {
         vector4i.set(newBuffer);
         vector4f.set(i2f(vector4i.x), i2f(vector4i.y), i2f(vector4i.z), i2f(vector4i.w));
         if (GLStateManager.shouldBypassCache() || !this.ambient.equals(vector4f)) {
             this.ambient.set(vector4f);
+            return true;
         }
+        return false;
     }
 
-    public void setDiffuse(FloatBuffer newBuffer) {
+    public boolean setDiffuse(FloatBuffer newBuffer) {
         vector4f.set(newBuffer);
         if (GLStateManager.shouldBypassCache() || !this.diffuse.equals(vector4f)) {
             this.diffuse.set(vector4f);
+            return true;
         }
+        return false;
     }
 
-    public void setDiffuse(IntBuffer newBuffer) {
+    public boolean setDiffuse(IntBuffer newBuffer) {
         vector4i.set(newBuffer);
         vector4f.set(i2f(vector4i.x), i2f(vector4i.y), i2f(vector4i.z), i2f(vector4i.w));
         if (GLStateManager.shouldBypassCache() || !this.diffuse.equals(vector4f)) {
             this.diffuse.set(vector4f);
+            return true;
         }
+        return false;
     }
 
-    public void setSpecular(FloatBuffer newBuffer) {
+    public boolean setSpecular(FloatBuffer newBuffer) {
         vector4f.set(newBuffer);
         if (GLStateManager.shouldBypassCache() || !this.specular.equals(vector4f)) {
             this.specular.set(vector4f);
+            return true;
         }
+        return false;
     }
 
-    public void setSpecular(IntBuffer newBuffer) {
+    public boolean setSpecular(IntBuffer newBuffer) {
         vector4i.set(newBuffer);
         vector4f.set(i2f(vector4i.x), i2f(vector4i.y), i2f(vector4i.z), i2f(vector4i.w));
         if (GLStateManager.shouldBypassCache() || !this.specular.equals(vector4f)) {
             this.specular.set(vector4f);
+            return true;
         }
+        return false;
     }
 
-    public void setPosition(FloatBuffer newBuffer) {
-        // We are bypassing cache everytime for position, because the necessary components to enable tracking the cache
-        // are big and probably more than just bypassing. We would need to track the modelview matrix it was transformed
-        // with and the untransformed coordinates in addition to the final transformation.
-        this.position.set(newBuffer);
-        this.position.mul(GLStateManager.getModelViewMatrix());
+    public boolean setPosition(FloatBuffer newBuffer) {
+        vector4f.set(newBuffer);
+        return applyPosition(vector4f);
     }
 
-    public void setPosition(IntBuffer newBuffer) {
+    public boolean setPosition(IntBuffer newBuffer) {
         vector4i.set(newBuffer);
-        this.position.set((float) vector4i.x, (float) vector4i.y, (float) vector4i.z, (float) vector4i.w);
-        this.position.mul(GLStateManager.getModelViewMatrix());
+        vector4f.set((float) vector4i.x, (float) vector4i.y, (float) vector4i.z, (float) vector4i.w);
+        return applyPosition(vector4f);
     }
 
-    public void setSpotDirection(FloatBuffer newBuffer) {
-        // We are bypassing cache everytime for spot direction, because the necessary components to enable tracking the cache
-        // are big and probably more than just bypassing. We would need to track the modelview matrix it was transformed
-        // with and the untransformed coordinates in addition to the final transformation.
-        GLStateManager.getModelViewMatrix().get3x3(matrix3f);
-        this.spotDirection.set(newBuffer);
-        this.spotDirection.mul(matrix3f);
+    private boolean applyPosition(Vector4f raw) {
+        final int mvGen = GLStateManager.mvGeneration;
+        if (GLStateManager.shouldBypassCache() || this.posMvGeneration != mvGen || !this.rawPosition.equals(raw)) {
+            this.rawPosition.set(raw);
+            this.posMvGeneration = mvGen;
+            this.position.set(raw);
+            this.position.mul(GLStateManager.getModelViewMatrix());
+            return true;
+        }
+        return false;
     }
 
-    public void setSpotDirection(IntBuffer newBuffer) {
+    public boolean setSpotDirection(FloatBuffer newBuffer) {
+        vector3f.set(newBuffer);
+        return applySpotDirection(vector3f);
+    }
+
+    public boolean setSpotDirection(IntBuffer newBuffer) {
         vector3i.set(newBuffer);
-        GLStateManager.getModelViewMatrix().get3x3(matrix3f);
-        this.spotDirection.set((float) vector3i.x, (float) vector3i.y, (float) vector3i.z);
-        this.spotDirection.mul(matrix3f);
+        vector3f.set((float) vector3i.x, (float) vector3i.y, (float) vector3i.z);
+        return applySpotDirection(vector3f);
     }
 
-    public void setSpotExponent(FloatBuffer newBuffer) {
-        setSpotExponent(newBuffer.get());
+    private boolean applySpotDirection(Vector3f raw) {
+        final int mvLinearGen = GLStateManager.mvLinearGeneration;
+        if (GLStateManager.shouldBypassCache() || this.spotDirLinearGeneration != mvLinearGen || !this.rawSpotDirection.equals(raw)) {
+            this.rawSpotDirection.set(raw);
+            this.spotDirLinearGeneration = mvLinearGen;
+            GLStateManager.getModelViewMatrix().get3x3(matrix3f);
+            this.spotDirection.set(raw);
+            this.spotDirection.mul(matrix3f);
+            return true;
+        }
+        return false;
     }
 
-    public void setSpotExponent(IntBuffer newBuffer) {
-        setSpotExponent((float) newBuffer.get());
+    public boolean setSpotExponent(FloatBuffer newBuffer) {
+        return setSpotExponent(newBuffer.get());
     }
 
-    public void setSpotExponent(int i) {
-        setSpotExponent((float) i);
+    public boolean setSpotExponent(IntBuffer newBuffer) {
+        return setSpotExponent((float) newBuffer.get());
     }
 
-    public void setSpotExponent(float f) {
+    public boolean setSpotExponent(int i) {
+        return setSpotExponent((float) i);
+    }
+
+    public boolean setSpotExponent(float f) {
         if (GLStateManager.shouldBypassCache() || Float.compare(f, this.spotExponent) != 0) {
             this.spotExponent = f;
+            return true;
         }
+        return false;
     }
 
-    public void setSpotCutoff(FloatBuffer newBuffer) {
-        setSpotCutoff(newBuffer.get());
+    public boolean setSpotCutoff(FloatBuffer newBuffer) {
+        return setSpotCutoff(newBuffer.get());
     }
 
-    public void setSpotCutoff(IntBuffer newBuffer) {
-        setSpotCutoff((float) newBuffer.get());
+    public boolean setSpotCutoff(IntBuffer newBuffer) {
+        return setSpotCutoff((float) newBuffer.get());
     }
 
-    public void setSpotCutoff(int i) {
-        setSpotCutoff((float) i);
+    public boolean setSpotCutoff(int i) {
+        return setSpotCutoff((float) i);
     }
 
-    public void setSpotCutoff(float f) {
+    public boolean setSpotCutoff(float f) {
         if (GLStateManager.shouldBypassCache() || Float.compare(f, this.spotCutoff) != 0) {
             this.spotCutoff = f;
             this.spotCosCutoff = (float) Math.cos(Math.toRadians(f));
+            return true;
         }
+        return false;
     }
 
-    public void setConstantAttenuation(FloatBuffer newBuffer) {
-        setConstantAttenuation(newBuffer.get());
+    public boolean setConstantAttenuation(FloatBuffer newBuffer) {
+        return setConstantAttenuation(newBuffer.get());
     }
 
-    public void setConstantAttenuation(IntBuffer newBuffer) {
-        setConstantAttenuation((float) newBuffer.get());
+    public boolean setConstantAttenuation(IntBuffer newBuffer) {
+        return setConstantAttenuation((float) newBuffer.get());
     }
 
-    public void setConstantAttenuation(int i) {
-        setConstantAttenuation((float) i);
+    public boolean setConstantAttenuation(int i) {
+        return setConstantAttenuation((float) i);
     }
 
-    public void setConstantAttenuation(float f) {
+    public boolean setConstantAttenuation(float f) {
         if (GLStateManager.shouldBypassCache() || Float.compare(f, this.constantAttenuation) != 0) {
             this.constantAttenuation = f;
+            return true;
         }
+        return false;
     }
 
-    public void setLinearAttenuation(FloatBuffer newBuffer) {
-        setLinearAttenuation(newBuffer.get());
+    public boolean setLinearAttenuation(FloatBuffer newBuffer) {
+        return setLinearAttenuation(newBuffer.get());
     }
 
-    public void setLinearAttenuation(IntBuffer newBuffer) {
-        setLinearAttenuation((float) newBuffer.get());
+    public boolean setLinearAttenuation(IntBuffer newBuffer) {
+        return setLinearAttenuation((float) newBuffer.get());
     }
 
-    public void setLinearAttenuation(int i) {
-        setLinearAttenuation((float) i);
+    public boolean setLinearAttenuation(int i) {
+        return setLinearAttenuation((float) i);
     }
 
-    public void setLinearAttenuation(float f) {
+    public boolean setLinearAttenuation(float f) {
         if (GLStateManager.shouldBypassCache() || Float.compare(f, this.linearAttenuation) != 0) {
             this.linearAttenuation = f;
+            return true;
         }
+        return false;
     }
 
-    public void setQuadraticAttenuation(FloatBuffer newBuffer) {
-        setQuadraticAttenuation(newBuffer.get());
+    public boolean setQuadraticAttenuation(FloatBuffer newBuffer) {
+        return setQuadraticAttenuation(newBuffer.get());
     }
 
-    public void setQuadraticAttenuation(IntBuffer newBuffer) {
-        setQuadraticAttenuation((float) newBuffer.get());
+    public boolean setQuadraticAttenuation(IntBuffer newBuffer) {
+        return setQuadraticAttenuation((float) newBuffer.get());
     }
 
-    public void setQuadraticAttenuation(int i) {
-        setQuadraticAttenuation((float) i);
+    public boolean setQuadraticAttenuation(int i) {
+        return setQuadraticAttenuation((float) i);
     }
 
-    public void setQuadraticAttenuation(float f) {
+    public boolean setQuadraticAttenuation(float f) {
         if (GLStateManager.shouldBypassCache() || Float.compare(f, this.quadraticAttenuation) != 0) {
             this.quadraticAttenuation = f;
+            return true;
         }
+        return false;
     }
 
     @Override
@@ -246,7 +294,11 @@ public class LightState implements ISettableState<LightState> {
         this.diffuse.set(state.diffuse);
         this.specular.set(state.specular);
         this.position.set(state.position);
+        this.rawPosition.set(state.rawPosition);
+        this.posMvGeneration = state.posMvGeneration;
         this.spotDirection.set(state.spotDirection);
+        this.rawSpotDirection.set(state.rawSpotDirection);
+        this.spotDirLinearGeneration = state.spotDirLinearGeneration;
         this.spotExponent = state.spotExponent;
         this.spotCutoff = state.spotCutoff;
         this.spotCosCutoff = state.spotCosCutoff;

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

@@ -37,82 +37,100 @@ public class MaterialState implements ISettableState<MaterialState> {
         colorIndexes = new Vector3f(0.0F, 1.0F, 1.0F);
     }
 
-    public void setAmbient(FloatBuffer newBuffer) {
+    public boolean setAmbient(FloatBuffer newBuffer) {
         vector4f.set(newBuffer);
         if (GLStateManager.shouldBypassCache() || !this.ambient.equals(vector4f)) {
             this.ambient.set(vector4f);
+            return true;
         }
+        return false;
     }
 
-    public void setAmbient(IntBuffer newBuffer) {
+    public boolean setAmbient(IntBuffer newBuffer) {
         vector4i.set(newBuffer);
         vector4f.set(i2f(vector4i.x), i2f(vector4i.y), i2f(vector4i.z), i2f(vector4i.w));
         if (GLStateManager.shouldBypassCache() || !this.ambient.equals(vector4f)) {
             this.ambient.set(vector4f);
+            return true;
         }
+        return false;
     }
 
-    public void setDiffuse(FloatBuffer newBuffer) {
+    public boolean setDiffuse(FloatBuffer newBuffer) {
         vector4f.set(newBuffer);
         if (GLStateManager.shouldBypassCache() || !this.diffuse.equals(vector4f)) {
             this.diffuse.set(vector4f);
+            return true;
         }
+        return false;
     }
 
-    public void setDiffuse(IntBuffer newBuffer) {
+    public boolean setDiffuse(IntBuffer newBuffer) {
         vector4i.set(newBuffer);
         vector4f.set(i2f(vector4i.x), i2f(vector4i.y), i2f(vector4i.z), i2f(vector4i.w));
         if (GLStateManager.shouldBypassCache() || !this.diffuse.equals(vector4f)) {
             this.diffuse.set(vector4f);
+            return true;
         }
+        return false;
     }
 
-    public void setSpecular(FloatBuffer newBuffer) {
+    public boolean setSpecular(FloatBuffer newBuffer) {
         vector4f.set(newBuffer);
         if (GLStateManager.shouldBypassCache() || !this.specular.equals(vector4f)) {
             this.specular.set(vector4f);
+            return true;
         }
+        return false;
     }
 
-    public void setSpecular(IntBuffer newBuffer) {
+    public boolean setSpecular(IntBuffer newBuffer) {
         vector4i.set(newBuffer);
         vector4f.set(i2f(vector4i.x), i2f(vector4i.y), i2f(vector4i.z), i2f(vector4i.w));
         if (GLStateManager.shouldBypassCache() || !this.specular.equals(vector4f)) {
             this.specular.set(vector4f);
+            return true;
         }
+        return false;
     }
 
-    public void setEmission(FloatBuffer newBuffer) {
+    public boolean setEmission(FloatBuffer newBuffer) {
         vector4f.set(newBuffer);
         if (GLStateManager.shouldBypassCache() || !this.emission.equals(vector4f)) {
             this.emission.set(vector4f);
+            return true;
         }
+        return false;
     }
 
-    public void setEmission(IntBuffer newBuffer) {
+    public boolean setEmission(IntBuffer newBuffer) {
         vector4i.set(newBuffer);
         vector4f.set(i2f(vector4i.x), i2f(vector4i.y), i2f(vector4i.z), i2f(vector4i.w));
         if (GLStateManager.shouldBypassCache() || !this.emission.equals(vector4f)) {
             this.emission.set(vector4f);
+            return true;
         }
+        return false;
     }
 
-    public void setShininess(float val) {
+    public boolean setShininess(float val) {
         if (GLStateManager.shouldBypassCache() || Float.compare(this.shininess, val) != 0) {
             this.shininess = val;
+            return true;
         }
+        return false;
     }
 
     // On the buffer versions of shininess, we need to call `get(0)` explicitly specifying the index
     // otherwise calling `get()` advances the buffer position, and some mods may re-use the same buffer
     // in subsequent calls, resulting in a BufferUnderflowException.
-    public void setShininess(FloatBuffer newBuffer) { setShininess(newBuffer.get(0)); }
+    public boolean setShininess(FloatBuffer newBuffer) { return setShininess(newBuffer.get(0)); }
 
-    public void setShininess(IntBuffer newBuffer) { setShininess((float) newBuffer.get(0)); }
+    public boolean setShininess(IntBuffer newBuffer) { return setShininess((float) newBuffer.get(0)); }
 
-    public void setShininess(int val) { setShininess((float) val);}
+    public boolean setShininess(int val) { return setShininess((float) val);}
 
-    public void setColorIndexes(FloatBuffer newBuffer) {
+    public boolean setColorIndexes(FloatBuffer newBuffer) {
         // You are reading this correctly, nvidia drivers flip the y and z values in
         // glMaterial specifically for GL_COLOR_INDEXES. Other drivers do not do this.
         // This probably breaks things but who knows, GLSM is setup to track to what the
@@ -125,15 +143,19 @@ public class MaterialState implements ISettableState<MaterialState> {
 
         if (GLStateManager.shouldBypassCache() || !this.colorIndexes.equals(vector3f)) {
             this.colorIndexes.set(vector3f);
+            return true;
         }
+        return false;
     }
 
-    public void setColorIndexes(IntBuffer newBuffer) {
+    public boolean setColorIndexes(IntBuffer newBuffer) {
         vector3i.set(newBuffer.get(0), newBuffer.get(2), newBuffer.get(1));
         vector3f.set((float) vector3i.x, (float) vector3i.y, (float) vector3i.z);
         if (GLStateManager.shouldBypassCache() || !this.colorIndexes.equals(vector3f)) {
             this.colorIndexes.set(vector3f);
+            return true;
         }
+        return false;
     }
 
     @Override

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

@@ -0,0 +1,51 @@
+package com.gtnewhorizons.angelica.glsm.states;
+
+import org.lwjgl.opengl.GL11;
+import org.lwjgl.opengl.GL12;
+
+import static com.gtnewhorizons.angelica.glsm.backend.BackendManager.RENDER_BACKEND;
+
+/**
+ * Immutable client-side pixel unpack state (glPixelStore UNPACK_* params)
+ */
+public record PixelUnpackState(
+    int alignment,
+    int rowLength,
+    int skipRows,
+    int skipPixels,
+    int imageHeight,
+    int skipImages,
+    boolean swapBytes,
+    boolean lsbFirst
+) {
+    public static final PixelUnpackState DEFAULT = new PixelUnpackState(4, 0, 0, 0, 0, 0, false, false);
+
+    public boolean isDefault() {
+        return this.equals(DEFAULT);
+    }
+
+    public PixelUnpackState with(int pname, int param) {
+        return switch (pname) {
+            case GL11.GL_UNPACK_ALIGNMENT -> (param == 1 || param == 2 || param == 4 || param == 8) ? new PixelUnpackState(param, rowLength, skipRows, skipPixels, imageHeight, skipImages, swapBytes, lsbFirst) : this;
+            case GL11.GL_UNPACK_ROW_LENGTH -> param >= 0 ? new PixelUnpackState(alignment, param, skipRows, skipPixels, imageHeight, skipImages, swapBytes, lsbFirst) : this;
+            case GL11.GL_UNPACK_SKIP_ROWS -> param >= 0 ? new PixelUnpackState(alignment, rowLength, param, skipPixels, imageHeight, skipImages, swapBytes, lsbFirst) : this;
+            case GL11.GL_UNPACK_SKIP_PIXELS -> param >= 0 ? new PixelUnpackState(alignment, rowLength, skipRows, param, imageHeight, skipImages, swapBytes, lsbFirst) : this;
+            case GL12.GL_UNPACK_IMAGE_HEIGHT -> param >= 0 ? new PixelUnpackState(alignment, rowLength, skipRows, skipPixels, param, skipImages, swapBytes, lsbFirst) : this;
+            case GL12.GL_UNPACK_SKIP_IMAGES -> param >= 0 ? new PixelUnpackState(alignment, rowLength, skipRows, skipPixels, imageHeight, param, swapBytes, lsbFirst) : this;
+            case GL11.GL_UNPACK_SWAP_BYTES -> new PixelUnpackState(alignment, rowLength, skipRows, skipPixels, imageHeight, skipImages, param != 0, lsbFirst);
+            case GL11.GL_UNPACK_LSB_FIRST -> new PixelUnpackState(alignment, rowLength, skipRows, skipPixels, imageHeight, skipImages, swapBytes, param != 0);
+            default -> this;
+        };
+    }
+
+    public static void applyDiff(PixelUnpackState from, PixelUnpackState to) {
+        if (from.alignment != to.alignment) RENDER_BACKEND.pixelStorei(GL11.GL_UNPACK_ALIGNMENT, to.alignment);
+        if (from.rowLength != to.rowLength) RENDER_BACKEND.pixelStorei(GL11.GL_UNPACK_ROW_LENGTH, to.rowLength);
+        if (from.skipRows != to.skipRows) RENDER_BACKEND.pixelStorei(GL11.GL_UNPACK_SKIP_ROWS, to.skipRows);
+        if (from.skipPixels != to.skipPixels) RENDER_BACKEND.pixelStorei(GL11.GL_UNPACK_SKIP_PIXELS, to.skipPixels);
+        if (from.imageHeight != to.imageHeight) RENDER_BACKEND.pixelStorei(GL12.GL_UNPACK_IMAGE_HEIGHT, to.imageHeight);
+        if (from.skipImages != to.skipImages) RENDER_BACKEND.pixelStorei(GL12.GL_UNPACK_SKIP_IMAGES, to.skipImages);
+        if (from.swapBytes != to.swapBytes) RENDER_BACKEND.pixelStorei(GL11.GL_UNPACK_SWAP_BYTES, to.swapBytes ? 1 : 0);
+        if (from.lsbFirst != to.lsbFirst) RENDER_BACKEND.pixelStorei(GL11.GL_UNPACK_LSB_FIRST, to.lsbFirst ? 1 : 0);
+    }
+}

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

@@ -1,198 +0,0 @@
-package com.gtnewhorizons.angelica.glsm.states;
-
-import it.unimi.dsi.fastutil.ints.Int2ObjectOpenHashMap;
-
-import org.lwjgl.opengl.GL11;
-
-import java.nio.ByteBuffer;
-import java.util.ArrayDeque;
-
-/**
- * Per-VAO vertex attribute pointer state tracking (Mesa-style).
- */
-public class VertexAttribState {
-    public static final int MAX_ATTRIBS = 16;
-
-    private static final Int2ObjectOpenHashMap<Attrib[]> vaoAttribs = new Int2ObjectOpenHashMap<>();
-    private static Attrib[] current;
-    private static final ArrayDeque<Attrib[]> pool = new ArrayDeque<>();
-    private static int clientSideEnabledCount;
-
-    public static void init(int defaultVAO) {
-        vaoAttribs.clear();
-        pool.clear();
-        current = allocAttribArray();
-        vaoAttribs.put(defaultVAO, current);
-        clientSideEnabledCount = 0;
-    }
-
-    public static void onBindVertexArray(int newVAO) {
-        current = vaoAttribs.computeIfAbsent(newVAO, k -> allocAttribArray());
-        recomputeClientSideCount();
-    }
-
-    public static void onDeleteVertexArray(int vaoId) {
-        final Attrib[] arr = vaoAttribs.remove(vaoId);
-        if (arr != null) {
-            pool.addLast(arr);
-        }
-    }
-
-    public static void reset() {
-        vaoAttribs.clear();
-        pool.clear();
-        current = null;
-        clientSideEnabledCount = 0;
-    }
-
-    private static Attrib[] allocAttribArray() {
-        Attrib[] arr = pool.pollFirst();
-        if (arr != null) {
-            for (Attrib a : arr) a.reset();
-            return arr;
-        }
-        arr = new Attrib[MAX_ATTRIBS];
-        for (int i = 0; i < MAX_ATTRIBS; i++) arr[i] = new Attrib();
-        return arr;
-    }
-
-    public static void set(int index, int size, int type, boolean normalized, int stride, long offset, int vboId) {
-        if (index < 0 || index >= MAX_ATTRIBS) return;
-        final Attrib a = current[index];
-        final boolean was = a.isClientSide();
-        a.size = size;
-        a.type = type;
-        a.normalized = normalized;
-        a.stride = stride;
-        a.offset = offset;
-        a.vboId = vboId;
-        a.clientPointer = null;
-        if (was) clientSideEnabledCount--;
-    }
-
-    public static void set(int index, int size, int type, boolean normalized, int stride, ByteBuffer pointer, int vboId) {
-        if (index < 0 || index >= MAX_ATTRIBS) return;
-        final Attrib a = current[index];
-        final boolean was = a.isClientSide();
-        a.size = size;
-        a.type = type;
-        a.normalized = normalized;
-        a.stride = stride;
-        a.offset = 0;
-        a.vboId = vboId;
-        a.clientPointer = (vboId == 0) ? pointer : null;
-        final boolean now = a.isClientSide();
-        if (was != now) clientSideEnabledCount += now ? 1 : -1;
-    }
-
-    public static void setEnabled(int index, boolean enabled) {
-        if (index < 0 || index >= MAX_ATTRIBS) return;
-        final Attrib a = current[index];
-        if (a.clientPointer != null && a.enabled != enabled) {
-            clientSideEnabledCount += enabled ? 1 : -1;
-        }
-        a.enabled = enabled;
-    }
-
-    public static Attrib get(int index) {
-        return current[index];
-    }
-
-
-
-    private static void recomputeClientSideCount() {
-        int count = 0;
-        for (int i = 0; i < MAX_ATTRIBS; i++) {
-            if (current[i].isClientSide()) count++;
-        }
-        clientSideEnabledCount = count;
-    }
-
-    /**
-     * Returns true if any currently enabled vertex attribute was registered without a VBO
-     * (i.e. as a client-side pointer). In core profile, such attribs are treated as null
-     * offsets into a non-existent buffer, causing a native crash at draw time.
-     */
-    public static boolean hasAnyClientSideEnabledAttrib() {
-        return clientSideEnabledCount > 0;
-    }
-    public static class Attrib {
-        public boolean enabled;
-        public int size;
-        public int type;
-        public boolean normalized;
-        public int stride;
-        public long offset;
-        public int vboId;
-        public ByteBuffer clientPointer;
-
-        public boolean isClientSide() {
-            return enabled && clientPointer != null;
-        }
-
-        public void reset() {
-            enabled = false;
-            size = 0;
-            type = 0;
-            normalized = false;
-            stride = 0;
-            offset = 0;
-            vboId = 0;
-            clientPointer = null;
-        }
-
-        public int effectiveStride() {
-            return (stride != 0) ? stride : size * typeSizeBytes();
-        }
-
-        public int typeSizeBytes() {
-            return glTypeSizeBytes(type);
-        }
-
-        public static int glTypeSizeBytes(int glType) {
-            return switch (glType) {
-                case GL11.GL_FLOAT, GL11.GL_INT, GL11.GL_UNSIGNED_INT -> 4;
-                case GL11.GL_DOUBLE -> 8;
-                case GL11.GL_SHORT, GL11.GL_UNSIGNED_SHORT -> 2;
-                case GL11.GL_BYTE, GL11.GL_UNSIGNED_BYTE -> 1;
-                default -> 4;
-            };
-        }
-
-        public float readComponent(ByteBuffer buf, int base, int component) {
-            return readComponent(type, normalized, buf, base, component);
-        }
-
-        public static float readComponent(int type, boolean normalized, ByteBuffer buf, int base, int component) {
-            return switch (type) {
-                case GL11.GL_FLOAT -> buf.getFloat(base + component * 4);
-                case GL11.GL_DOUBLE -> (float) buf.getDouble(base + component * 8);
-                case GL11.GL_INT -> {
-                    final int v = buf.getInt(base + component * 4);
-                    yield normalized ? v / (float) Integer.MAX_VALUE : (float) v;
-                }
-                case GL11.GL_UNSIGNED_INT -> {
-                    final int v = buf.getInt(base + component * 4);
-                    yield normalized ? (v & 0xFFFFFFFFL) / (float) 0xFFFFFFFFL : (float) (v & 0xFFFFFFFFL);
-                }
-                case GL11.GL_SHORT -> {
-                    final short v = buf.getShort(base + component * 2);
-                    yield normalized ? v / (float) Short.MAX_VALUE : (float) v;
-                }
-                case GL11.GL_UNSIGNED_SHORT -> {
-                    final int v = buf.getShort(base + component * 2) & 0xFFFF;
-                    yield normalized ? v / (float) 0xFFFF : (float) v;
-                }
-                case GL11.GL_BYTE -> {
-                    final byte v = buf.get(base + component);
-                    yield normalized ? v / 127.0f : (float) v;
-                }
-                case GL11.GL_UNSIGNED_BYTE -> {
-                    final int v = buf.get(base + component) & 0xFF;
-                    yield normalized ? v / 255.0f : (float) v;
-                }
-                default -> 0.0f;
-            };
-        }
-    }
-}

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

@@ -7,7 +7,6 @@ import com.gtnewhorizon.gtnhlib.client.renderer.vertex.VertexFormat;
 import com.gtnewhorizons.angelica.glsm.GLStateManager;
 import com.gtnewhorizons.angelica.glsm.QuadConverter;
 import com.gtnewhorizons.angelica.glsm.RenderSystem;
-import com.gtnewhorizons.angelica.glsm.ffp.ShaderManager;
 import net.minecraft.client.renderer.Tessellator;
 import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
@@ -204,14 +203,8 @@ public class TessellatorStreamingDrawer {
             firstVertex = 0;
         }
 
-        GLStateManager.prepareWideLineEmulation(drawMode);
-        ShaderManager.getInstance().preDraw(flags);
         drawWithQuadConversion(drawMode, firstVertex, vertexCount);
         GLStateManager.glBindVertexArray(0);
-        GLStateManager.glDisableClientState(GL11.GL_VERTEX_ARRAY);
-        GLStateManager.glDisableClientState(GL11.GL_TEXTURE_COORD_ARRAY);
-        GLStateManager.glDisableClientState(GL11.GL_COLOR_ARRAY);
-        GLStateManager.glDisableClientState(GL11.GL_NORMAL_ARRAY);
     }
 
     private static void drawWithQuadConversion(int drawMode, int firstVertex, int vertexCount) {

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

@@ -17,6 +17,7 @@ public class TextureInfo {
     @Getter @Setter protected int magFilter = GL11.GL_LINEAR;
     @Getter @Setter protected int wrapS = GL11.GL_REPEAT;
     @Getter @Setter protected int wrapT = GL11.GL_REPEAT;
+    @Getter @Setter protected int baseLevel = 0;
     @Getter @Setter protected int maxLevel = 1000;
     @Getter @Setter protected int minLod = -1000;
     @Getter @Setter protected int maxLod = 1000;
@@ -24,6 +25,8 @@ public class TextureInfo {
 
     @Getter @Setter protected float maxAnisotropy = 1.0f;
 
+    @Getter @Setter protected boolean generateMipmap = false;
+
     protected TextureInfo(int id) {
         this.id = id;
     }

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

@@ -0,0 +1,103 @@
+package com.gtnewhorizons.angelica.glsm;
+
+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.GL20;
+
+import java.nio.FloatBuffer;
+import java.nio.IntBuffer;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+@ExtendWith(GLSMCoreExtension.class)
+class ArrayUniformUploadGLTest {
+
+    private static int compile(int type, String src) {
+        final int s = GL20.glCreateShader(type);
+        GL20.glShaderSource(s, src);
+        GL20.glCompileShader(s);
+        assertEquals(GL11.GL_TRUE, GL20.glGetShaderi(s, GL20.GL_COMPILE_STATUS), () -> "shader compile failed: " + GL20.glGetShaderInfoLog(s, 4096));
+        return s;
+    }
+
+    private static int link(String vs, String fs) {
+        final int v = compile(GL20.GL_VERTEX_SHADER, vs);
+        final int f = compile(GL20.GL_FRAGMENT_SHADER, fs);
+        final int p = GL20.glCreateProgram();
+        GL20.glAttachShader(p, v);
+        GL20.glAttachShader(p, f);
+        GL20.glLinkProgram(p);
+        assertEquals(GL11.GL_TRUE, GL20.glGetProgrami(p, GL20.GL_LINK_STATUS), () -> "link failed: " + GL20.glGetProgramInfoLog(p, 4096));
+        GL20.glDeleteShader(v);
+        GL20.glDeleteShader(f);
+        return p;
+    }
+
+    private static final String VS = "#version 330 core\nvoid main(){ gl_Position = vec4(0.0); }\n";
+
+    @Test
+    void glUniform2FloatBufferUploadsWholeArray() {
+        // Runtime index keeps the whole array active so element locations stay queryable.
+        final String fs = "#version 330 core\n"
+            + "uniform vec2 cosmicuvs[10];\n"
+            + "uniform int idx;\n"
+            + "out vec4 o;\n"
+            + "void main(){ o = vec4(cosmicuvs[idx], cosmicuvs[(idx+1)%10]); }\n";
+        final int p = link(VS, fs);
+        try {
+            GL20.glUseProgram(p);
+
+            final FloatBuffer buf = BufferUtils.createFloatBuffer(20);
+            for (int i = 0; i < 20; i++) buf.put(i + 1.0f); // 1..20, all distinct, all non-zero
+            buf.flip();
+
+            GLStateManager.glUniform2(GL20.glGetUniformLocation(p, "cosmicuvs"), buf);
+
+            final FloatBuffer read = BufferUtils.createFloatBuffer(2);
+            for (int i = 0; i < 10; i++) {
+                final int loc = GL20.glGetUniformLocation(p, "cosmicuvs[" + i + "]");
+                assertTrue(loc >= 0, "element " + i + " optimized out");
+                read.clear();
+                GL20.glGetUniform(p, loc, read);
+                assertEquals(2 * i + 1.0f, read.get(0), 0.0f, "cosmicuvs[" + i + "].x");
+                assertEquals(2 * i + 2.0f, read.get(1), 0.0f, "cosmicuvs[" + i + "].y");
+            }
+        } finally {
+            GL20.glUseProgram(0);
+            GL20.glDeleteProgram(p);
+        }
+    }
+
+    @Test
+    void glUniform1IntBufferUploadsWholeArray() {
+        final String fs = "#version 330 core\n"
+            + "uniform int vals[4];\n"
+            + "uniform int idx;\n"
+            + "out vec4 o;\n"
+            + "void main(){ o = vec4(float(vals[idx])); }\n";
+        final int p = link(VS, fs);
+        try {
+            GL20.glUseProgram(p);
+
+            final IntBuffer buf = BufferUtils.createIntBuffer(4);
+            buf.put(11).put(22).put(33).put(44).flip();
+            GLStateManager.glUniform1(GL20.glGetUniformLocation(p, "vals"), buf);
+
+            final IntBuffer read = BufferUtils.createIntBuffer(1);
+            final int[] expect = {11, 22, 33, 44};
+            for (int i = 0; i < 4; i++) {
+                final int loc = GL20.glGetUniformLocation(p, "vals[" + i + "]");
+                assertTrue(loc >= 0, "element " + i + " optimized out");
+                read.clear();
+                GL20.glGetUniform(p, loc, read);
+                assertEquals(expect[i], read.get(0), "vals[" + i + "]");
+            }
+        } finally {
+            GL20.glUseProgram(0);
+            GL20.glDeleteProgram(p);
+        }
+    }
+}

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

@@ -21,7 +21,7 @@ class CompatUniformManagerTest {
     void cleanup() {
         if (program != 0) {
             GL20.glUseProgram(0);
-            GL20.glDeleteProgram(program);
+            GLStateManager.glDeleteProgram(program);
             program = 0;
         }
     }
@@ -68,7 +68,7 @@ class CompatUniformManagerTest {
 
         // Use program and upload — should not error
         GL20.glUseProgram(program);
-        CompatUniformManager.onUseProgram(program);
+        CompatUniformManager.refreshCompatUniforms(program);
 
         // Verify no GL errors
         assertEquals(0, org.lwjgl.opengl.GL11.glGetError(), "GL error after uniform upload");
@@ -146,7 +146,7 @@ class CompatUniformManagerTest {
 
         // Use program and upload — should not error
         GL20.glUseProgram(program);
-        CompatUniformManager.onUseProgram(program);
+        CompatUniformManager.refreshCompatUniforms(program);
 
         assertEquals(0, org.lwjgl.opengl.GL11.glGetError(), "GL error after fog uniform upload");
     }

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

@@ -0,0 +1,40 @@
+package com.gtnewhorizons.angelica.glsm;
+
+import com.gtnewhorizons.angelica.glsm.hooks.GLSMInitConfig;
+import org.junit.jupiter.api.extension.AfterAllCallback;
+import org.junit.jupiter.api.extension.BeforeAllCallback;
+import org.junit.jupiter.api.extension.ExtensionContext;
+import org.lwjgl.LWJGLException;
+import org.lwjgl.opengl.ContextAttribs;
+import org.lwjgl.opengl.Display;
+import org.lwjgl.opengl.DisplayMode;
+import org.lwjgl.opengl.PixelFormat;
+
+/**
+ * 3.3 core-profile context extension
+ */
+public class GLSMCoreExtension implements BeforeAllCallback, AfterAllCallback {
+    private boolean ownsDisplay = false;
+
+    @Override
+    public void beforeAll(ExtensionContext context) throws LWJGLException {
+        if (Display.isCreated()) return;
+        Display.setDisplayModeAndFullscreen(new DisplayMode(800, 600));
+        Display.setResizable(false);
+        Display.setFullscreen(false);
+        Display.create(
+            new PixelFormat().withDepthBits(24).withStencilBits(8),
+            new ContextAttribs(3, 3).withProfileCore(true).withForwardCompatible(true));
+        ownsDisplay = true;
+        GLStateManager.initialize(GLSMInitConfig.builder().displaySize(800, 600).build());
+        GLStateManager.setRunningSplash(false);
+        GLStateManager.markSplashComplete();
+        GLStateManager.BYPASS_CACHE = false;
+    }
+
+    @Override
+    public void afterAll(ExtensionContext context) {
+        if (ownsDisplay && Display.isCreated()) Display.destroy();
+        ownsDisplay = false;
+    }
+}

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

@@ -1,11 +1,11 @@
 package com.gtnewhorizons.angelica.glsm;
 
-import com.gtnewhorizons.angelica.glsm.GLDebug;
-import com.gtnewhorizons.angelica.glsm.GLStateManager;
 import com.gtnewhorizons.angelica.glsm.hooks.GLSMInitConfig;
 import org.junit.jupiter.api.extension.AfterEachCallback;
 import org.junit.jupiter.api.extension.BeforeAllCallback;
 import org.junit.jupiter.api.extension.BeforeEachCallback;
+import org.junit.jupiter.api.extension.ConditionEvaluationResult;
+import org.junit.jupiter.api.extension.ExecutionCondition;
 import org.junit.jupiter.api.extension.ExtensionContext;
 import org.lwjgl.LWJGLException;
 import org.lwjgl.opengl.Display;
@@ -19,7 +19,19 @@ import java.lang.reflect.Field;
 import static org.junit.jupiter.api.Assertions.assertEquals;
 import static org.junit.jupiter.api.extension.ExtensionContext.Namespace.GLOBAL;
 
-public class GLSMExtension implements BeforeAllCallback, BeforeEachCallback, AfterEachCallback, ExtensionContext.Store.CloseableResource {
+public class GLSMExtension implements BeforeAllCallback, BeforeEachCallback, AfterEachCallback, ExecutionCondition, ExtensionContext.Store.CloseableResource {
+
+    // Compat profile is not available on OSX
+    private static final boolean IS_MAC = System.getProperty("os.name", "").toLowerCase().contains("mac");
+    private static final boolean FORCE_RUN = Boolean.getBoolean("angelica.glsm.test.forceRun");
+
+    @Override
+    public ConditionEvaluationResult evaluateExecutionCondition(ExtensionContext context) {
+        if (IS_MAC && !FORCE_RUN) {
+            return ConditionEvaluationResult.disabled("Skipped on macOS: needs GL3+ compat profile");
+        }
+        return ConditionEvaluationResult.enabled("OS supports GL3+ compat profile");
+    }
 
     private static final Unsafe theUnsafe;
     static {

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

@@ -0,0 +1,174 @@
+package com.gtnewhorizons.angelica.glsm;
+
+import org.joml.Vector4f;
+import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
+import org.lwjgl.opengl.GL11;
+
+import java.nio.ByteBuffer;
+import java.nio.ByteOrder;
+import java.nio.FloatBuffer;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+@ExtendWith(GLSMCoreExtension.class)
+public class GLSM_DirtyTracking_UnitTest {
+
+    static final FloatBuffer f4b = ByteBuffer.allocateDirect(4 << 2).order(ByteOrder.nativeOrder()).asFloatBuffer();
+    static final FloatBuffer f3b = ByteBuffer.allocateDirect(3 << 2).order(ByteOrder.nativeOrder()).asFloatBuffer();
+
+    @BeforeEach
+    void pushTrackedState() {
+        GLStateManager.glPushAttrib(GL11.GL_LIGHTING_BIT | GL11.GL_FOG_BIT | GL11.GL_CURRENT_BIT);
+    }
+
+    @AfterEach
+    void popTrackedState() {
+        GLStateManager.glPopAttrib();
+    }
+
+    @Test
+    void materialBumpsOnlyOnChange() {
+        newf4b(0.1F, 0.2F, 0.3F, 0.4F);
+        GLStateManager.glMaterial(GL11.GL_FRONT, GL11.GL_AMBIENT, f4b);
+        final int gen = GLStateManager.lightingGeneration;
+
+        newf4b(0.1F, 0.2F, 0.3F, 0.4F);
+        GLStateManager.glMaterial(GL11.GL_FRONT, GL11.GL_AMBIENT, f4b);
+        assertEquals(gen, GLStateManager.lightingGeneration, "identical material must not bump lightingGeneration");
+
+        newf4b(0.9F, 0.2F, 0.3F, 0.4F);
+        GLStateManager.glMaterial(GL11.GL_FRONT, GL11.GL_AMBIENT, f4b);
+        assertEquals(gen + 1, GLStateManager.lightingGeneration, "changed material must bump lightingGeneration once");
+    }
+
+    @Test
+    void lightModelBumpsOnlyOnChange() {
+        newf4b(0.5F, 0.5F, 0.5F, 1.0F);
+        GLStateManager.glLightModel(GL11.GL_LIGHT_MODEL_AMBIENT, f4b);
+        final int gen = GLStateManager.lightingGeneration;
+
+        newf4b(0.5F, 0.5F, 0.5F, 1.0F);
+        GLStateManager.glLightModel(GL11.GL_LIGHT_MODEL_AMBIENT, f4b);
+        assertEquals(gen, GLStateManager.lightingGeneration, "identical light model ambient must not bump");
+    }
+
+    @Test
+    void lightColorBumpsOnlyOnChange() {
+        newf4b(0.25F, 0.5F, 0.75F, 1.0F);
+        GLStateManager.glLight(GL11.GL_LIGHT0, GL11.GL_DIFFUSE, f4b);
+        final int gen = GLStateManager.lightingGeneration;
+
+        newf4b(0.25F, 0.5F, 0.75F, 1.0F);
+        GLStateManager.glLight(GL11.GL_LIGHT0, GL11.GL_DIFFUSE, f4b);
+        assertEquals(gen, GLStateManager.lightingGeneration, "identical light diffuse must not bump");
+    }
+
+    @Test
+    void lightPositionDirtySkipsUnderSameModelview() {
+        GLStateManager.glMatrixMode(GL11.GL_MODELVIEW);
+        GLStateManager.glPushMatrix();
+        GLStateManager.glLoadIdentity();
+        GLStateManager.glTranslatef(1.0F, 2.0F, 3.0F);
+
+        newf4b(0.1F, 0.2F, 0.3F, 1.0F);
+        GLStateManager.glLight(GL11.GL_LIGHT0, GL11.GL_POSITION, f4b);
+        final int gen = GLStateManager.lightingGeneration;
+
+        newf4b(0.1F, 0.2F, 0.3F, 1.0F);
+        GLStateManager.glLight(GL11.GL_LIGHT0, GL11.GL_POSITION, f4b);
+        assertEquals(gen, GLStateManager.lightingGeneration, "same position under same modelview must not bump");
+
+        GLStateManager.glTranslatef(5.0F, 0.0F, 0.0F);
+        newf4b(0.1F, 0.2F, 0.3F, 1.0F);
+        GLStateManager.glLight(GL11.GL_LIGHT0, GL11.GL_POSITION, f4b);
+        assertEquals(gen + 1, GLStateManager.lightingGeneration, "same raw position under changed modelview must bump");
+
+        GLStateManager.glPopMatrix();
+    }
+
+    @Test
+    void translationDoesNotBumpLinearGeneration() {
+        GLStateManager.glMatrixMode(GL11.GL_MODELVIEW);
+        GLStateManager.glPushMatrix();
+
+        final int mv = GLStateManager.mvGeneration;
+        final int lin = GLStateManager.mvLinearGeneration;
+
+        GLStateManager.glTranslatef(1.0F, 2.0F, 3.0F);
+        assertEquals(mv + 1, GLStateManager.mvGeneration, "translate must bump mvGeneration");
+        assertEquals(lin, GLStateManager.mvLinearGeneration, "translate must NOT bump mvLinearGeneration");
+
+        GLStateManager.glRotatef(30.0F, 0.0F, 1.0F, 0.0F);
+        assertEquals(mv + 2, GLStateManager.mvGeneration, "rotate must bump mvGeneration");
+        assertEquals(lin + 1, GLStateManager.mvLinearGeneration, "rotate must bump mvLinearGeneration");
+
+        GLStateManager.glScalef(2.0F, 2.0F, 2.0F);
+        assertEquals(lin + 2, GLStateManager.mvLinearGeneration, "scale must bump mvLinearGeneration");
+
+        GLStateManager.glPopMatrix();
+    }
+
+    @Test
+    void fogBumpsOnlyOnChange() {
+        GLStateManager.glFogf(GL11.GL_FOG_DENSITY, 0.5F);
+        final int gen = GLStateManager.fragmentGeneration;
+
+        GLStateManager.glFogf(GL11.GL_FOG_DENSITY, 0.5F);
+        assertEquals(gen, GLStateManager.fragmentGeneration, "identical fog density must not bump fragmentGeneration");
+
+        GLStateManager.glFogf(GL11.GL_FOG_DENSITY, 0.7F);
+        assertEquals(gen + 1, GLStateManager.fragmentGeneration, "changed fog density must bump fragmentGeneration");
+    }
+
+    @Test
+    void spotDirectionDirtySkipsUnderTranslationOnly() {
+        GLStateManager.glMatrixMode(GL11.GL_MODELVIEW);
+        GLStateManager.glPushMatrix();
+        GLStateManager.glLoadIdentity();
+
+        newf3b(0.0F, 0.0F, -1.0F);
+        GLStateManager.glLight(GL11.GL_LIGHT0, GL11.GL_SPOT_DIRECTION, f3b);
+        final int gen = GLStateManager.lightingGeneration;
+
+        GLStateManager.glTranslatef(5.0F, 0.0F, 0.0F);
+        newf3b(0.0F, 0.0F, -1.0F);
+        GLStateManager.glLight(GL11.GL_LIGHT0, GL11.GL_SPOT_DIRECTION, f3b);
+        assertEquals(gen, GLStateManager.lightingGeneration, "spot direction under translation-only must not bump");
+
+        GLStateManager.glRotatef(90.0F, 0.0F, 1.0F, 0.0F);
+        newf3b(0.0F, 0.0F, -1.0F);
+        GLStateManager.glLight(GL11.GL_LIGHT0, GL11.GL_SPOT_DIRECTION, f3b);
+        assertEquals(gen + 1, GLStateManager.lightingGeneration, "same raw spot direction under changed 3x3 must bump");
+
+        GLStateManager.glPopMatrix();
+    }
+
+    @Test
+    void colorMaterialFreezesLastColorOnDisable() {
+        GLStateManager.glColorMaterial(GL11.GL_FRONT_AND_BACK, GL11.GL_AMBIENT_AND_DIFFUSE);
+        GLStateManager.glColor4f(1.0F, 0.0F, 0.0F, 1.0F); // enable-time color
+        GLStateManager.enableColorMaterial();
+        GLStateManager.glColor4f(0.0F, 0.0F, 1.0F, 1.0F); // last color while enabled
+        GLStateManager.disableColorMaterial();
+
+        final Vector4f diffuse = GLStateManager.getFrontMaterial().diffuse;
+        assertEquals(0.0F, diffuse.x, "diffuse must freeze at last color (blue), not enable-time red");
+        assertEquals(0.0F, diffuse.y, "green channel must be 0");
+        assertEquals(1.0F, diffuse.z, "blue channel must be 1");
+    }
+
+    static void newf4b(float x, float y, float z, float w) {
+        f4b.clear();
+        f4b.put(x).put(y).put(z).put(w);
+        f4b.flip();
+    }
+
+    static void newf3b(float x, float y, float z) {
+        f3b.clear();
+        f3b.put(x).put(y).put(z);
+        f3b.flip();
+    }
+}

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

@@ -0,0 +1,215 @@
+package com.gtnewhorizons.angelica.glsm;
+
+import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
+import org.lwjgl.opengl.GL11;
+
+import java.nio.ByteBuffer;
+import java.nio.ByteOrder;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+@ExtendWith(GLSMCoreExtension.class)
+public class GLSM_DisplayList_PixelStore_Test {
+
+    private static final int SRC = 8;
+    private static final int SUB = 4;
+
+    @AfterEach
+    void resetUnpackState() {
+        GLStateManager.glPixelStorei(GL11.GL_UNPACK_ALIGNMENT, 4);
+        setUnpack(0, 0, 0);
+    }
+
+    private static void setUnpack(int rowLength, int skipRows, int skipPixels) {
+        GLStateManager.glPixelStorei(GL11.GL_UNPACK_ROW_LENGTH, rowLength);
+        GLStateManager.glPixelStorei(GL11.GL_UNPACK_SKIP_ROWS, skipRows);
+        GLStateManager.glPixelStorei(GL11.GL_UNPACK_SKIP_PIXELS, skipPixels);
+    }
+
+    private static void setStridedUnpack() {
+        setUnpack(SRC, 1, 2);
+    }
+
+    /** RGBA source; red channel = y*size+x, alpha = 255. */
+    private static ByteBuffer makeSource(int size) {
+        final ByteBuffer buf = ByteBuffer.allocateDirect(size * size * 4).order(ByteOrder.nativeOrder());
+        for (int i = 0; i < size * size; i++) {
+            buf.put((byte) i).put((byte) 0).put((byte) 0).put((byte) 255);
+        }
+        buf.flip();
+        return buf;
+    }
+
+    private static int makeTexture(int size, ByteBuffer pixels) {
+        final int tex = GLStateManager.glGenTextures();
+        GLStateManager.glBindTexture(GL11.GL_TEXTURE_2D, tex);
+        GLStateManager.glTexImage2D(GL11.GL_TEXTURE_2D, 0, GL11.GL_RGBA8, size, size, 0, GL11.GL_RGBA, GL11.GL_UNSIGNED_BYTE, pixels);
+        return tex;
+    }
+
+    private static ByteBuffer readback(int size) {
+        final ByteBuffer out = ByteBuffer.allocateDirect(size * size * 4).order(ByteOrder.nativeOrder());
+        GLStateManager.glGetTexImage(GL11.GL_TEXTURE_2D, 0, GL11.GL_RGBA, GL11.GL_UNSIGNED_BYTE, out);
+        return out;
+    }
+
+    private static int red(ByteBuffer pixels, int size, int x, int y) {
+        return pixels.get((y * size + x) * 4) & 0xFF;
+    }
+
+    private static void assertStridedSubImage(ByteBuffer pixels) {
+        for (int y = 0; y < SUB; y++) {
+            for (int x = 0; x < SUB; x++) {
+                assertEquals((y + 1) * SRC + (x + 2), red(pixels, SUB, x, y), "pixel (" + x + "," + y + ")");
+            }
+        }
+    }
+
+    private static void assertTightSubImage(ByteBuffer pixels) {
+        for (int y = 0; y < SUB; y++) {
+            for (int x = 0; x < SUB; x++) {
+                assertEquals(y * SUB + x, red(pixels, SUB, x, y), "pixel (" + x + "," + y + ")");
+            }
+        }
+    }
+
+    private static void assertUnpack(int rowLength, int skipRows, int skipPixels) {
+        assertEquals(rowLength, GL11.glGetInteger(GL11.GL_UNPACK_ROW_LENGTH));
+        assertEquals(skipRows, GL11.glGetInteger(GL11.GL_UNPACK_SKIP_ROWS));
+        assertEquals(skipPixels, GL11.glGetInteger(GL11.GL_UNPACK_SKIP_PIXELS));
+    }
+
+    @Test
+    void pixelStoreExecutesImmediatelyAndIsNotRecorded() {
+        final int list = GLStateManager.glGenLists(1);
+        GLStateManager.glNewList(list, GL11.GL_COMPILE);
+        GLStateManager.glPixelStorei(GL11.GL_UNPACK_ROW_LENGTH, 7);
+        assertEquals(7, GL11.glGetInteger(GL11.GL_UNPACK_ROW_LENGTH), "must execute immediately during recording");
+        GLStateManager.glEndList();
+        assertEquals(7, GL11.glGetInteger(GL11.GL_UNPACK_ROW_LENGTH), "must persist after glEndList");
+
+        GLStateManager.glPixelStorei(GL11.GL_UNPACK_ROW_LENGTH, 0);
+        GLStateManager.glCallList(list);
+        assertEquals(0, GL11.glGetInteger(GL11.GL_UNPACK_ROW_LENGTH), "must not have been recorded into the list");
+
+        GLStateManager.glDeleteLists(list, 1);
+    }
+
+    @Test
+    void stridedTexSubImage2DCompile() {
+        final int tex = makeTexture(SUB, ByteBuffer.allocateDirect(SUB * SUB * 4).order(ByteOrder.nativeOrder()));
+        final ByteBuffer src = makeSource(SRC);
+
+        setStridedUnpack();
+
+        final int list = GLStateManager.glGenLists(1);
+        GLStateManager.glNewList(list, GL11.GL_COMPILE);
+        GLStateManager.glTexSubImage2D(GL11.GL_TEXTURE_2D, 0, 0, 0, SUB, SUB, GL11.GL_RGBA, GL11.GL_UNSIGNED_BYTE, src);
+        GLStateManager.glEndList();
+
+        assertEquals(0, red(readback(SUB), SUB, 0, 0), "GL_COMPILE must not execute the upload");
+
+        setUnpack(0, 0, 0);
+
+        GLStateManager.glCallList(list);
+        assertStridedSubImage(readback(SUB));
+        assertUnpack(0, 0, 0);
+
+        GLStateManager.glDeleteLists(list, 1);
+        GLStateManager.glDeleteTextures(tex);
+    }
+
+    @Test
+    void stridedTexSubImage2DCompileAndExecute() {
+        final ByteBuffer zeros = ByteBuffer.allocateDirect(SUB * SUB * 4).order(ByteOrder.nativeOrder());
+        final int tex = makeTexture(SUB, zeros);
+        final ByteBuffer src = makeSource(SRC);
+
+        setStridedUnpack();
+
+        final int list = GLStateManager.glGenLists(1);
+        GLStateManager.glNewList(list, GL11.GL_COMPILE_AND_EXECUTE);
+        GLStateManager.glTexSubImage2D(GL11.GL_TEXTURE_2D, 0, 0, 0, SUB, SUB, GL11.GL_RGBA, GL11.GL_UNSIGNED_BYTE, src);
+        GLStateManager.glEndList();
+
+        assertStridedSubImage(readback(SUB));
+
+        setUnpack(0, 0, 0);
+        GLStateManager.glTexSubImage2D(GL11.GL_TEXTURE_2D, 0, 0, 0, SUB, SUB, GL11.GL_RGBA, GL11.GL_UNSIGNED_BYTE, zeros);
+
+        GLStateManager.glCallList(list);
+        assertStridedSubImage(readback(SUB));
+        assertUnpack(0, 0, 0);
+
+        GLStateManager.glDeleteLists(list, 1);
+        GLStateManager.glDeleteTextures(tex);
+    }
+
+    @Test
+    void stridedTexImage2DCompile() {
+        final int tex = makeTexture(SUB, ByteBuffer.allocateDirect(SUB * SUB * 4).order(ByteOrder.nativeOrder()));
+        final ByteBuffer src = makeSource(SRC);
+
+        setStridedUnpack();
+
+        final int list = GLStateManager.glGenLists(1);
+        GLStateManager.glNewList(list, GL11.GL_COMPILE);
+        GLStateManager.glTexImage2D(GL11.GL_TEXTURE_2D, 0, GL11.GL_RGBA8, SUB, SUB, 0, GL11.GL_RGBA, GL11.GL_UNSIGNED_BYTE, src);
+        GLStateManager.glEndList();
+
+        setUnpack(0, 0, 0);
+
+        GLStateManager.glCallList(list);
+        assertStridedSubImage(readback(SUB));
+        assertUnpack(0, 0, 0);
+
+        GLStateManager.glDeleteLists(list, 1);
+        GLStateManager.glDeleteTextures(tex);
+    }
+
+    @Test
+    void defaultRecordedTexSubImage2DReplaysWithDefaults() {
+        final int tex = makeTexture(SUB, ByteBuffer.allocateDirect(SUB * SUB * 4).order(ByteOrder.nativeOrder()));
+        final ByteBuffer src = makeSource(SUB);
+
+        final int list = GLStateManager.glGenLists(1);
+        GLStateManager.glNewList(list, GL11.GL_COMPILE);
+        GLStateManager.glTexSubImage2D(GL11.GL_TEXTURE_2D, 0, 0, 0, SUB, SUB, GL11.GL_RGBA, GL11.GL_UNSIGNED_BYTE, src);
+        GLStateManager.glEndList();
+
+        GLStateManager.glPixelStorei(GL11.GL_UNPACK_ALIGNMENT, 1);
+        setStridedUnpack();
+
+        GLStateManager.glCallList(list);
+        assertTightSubImage(readback(SUB));
+        assertEquals(1, GL11.glGetInteger(GL11.GL_UNPACK_ALIGNMENT), "live state must survive replay");
+        assertUnpack(SRC, 1, 2);
+
+        GLStateManager.glDeleteLists(list, 1);
+        GLStateManager.glDeleteTextures(tex);
+    }
+
+    @Test
+    void defaultRecordedTexImage2DReplaysWithDefaults() {
+        final int tex = makeTexture(SUB, ByteBuffer.allocateDirect(SUB * SUB * 4).order(ByteOrder.nativeOrder()));
+        final ByteBuffer src = makeSource(SUB);
+
+        final int list = GLStateManager.glGenLists(1);
+        GLStateManager.glNewList(list, GL11.GL_COMPILE);
+        GLStateManager.glTexImage2D(GL11.GL_TEXTURE_2D, 0, GL11.GL_RGBA8, SUB, SUB, 0, GL11.GL_RGBA, GL11.GL_UNSIGNED_BYTE, src);
+        GLStateManager.glEndList();
+
+        GLStateManager.glPixelStorei(GL11.GL_UNPACK_ALIGNMENT, 1);
+        setStridedUnpack();
+
+        GLStateManager.glCallList(list);
+        assertTightSubImage(readback(SUB));
+        assertEquals(1, GL11.glGetInteger(GL11.GL_UNPACK_ALIGNMENT), "live state must survive replay");
+        assertUnpack(SRC, 1, 2);
+
+        GLStateManager.glDeleteLists(list, 1);
+        GLStateManager.glDeleteTextures(tex);
+    }
+}

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

@@ -1,7 +1,7 @@
 package com.gtnewhorizons.angelica.glsm;
 
 import com.gtnewhorizon.gtnhlib.client.opengl.UniversalVAO;
-import com.gtnewhorizons.angelica.glsm.states.VertexAttribState;
+import com.gtnewhorizons.angelica.glsm.ffp.VAOManager;
 import com.gtnewhorizons.angelica.util.GLSMUtil;
 import org.junit.jupiter.api.Assertions;
 import org.junit.jupiter.api.Test;
@@ -133,7 +133,7 @@ public class GLSM_VAO_UnitTest {
     private static void glBindVertexArray(int array) {
         if (array == 0) array = GLStateManager.getDefaultVAO();
         GLStateManager.boundVAO = array;
-        VertexAttribState.onBindVertexArray(array);
+        VAOManager.onBindVertexArrayPre(array);
         UniversalVAO.bindVertexArray(array);
     }
 }

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

@@ -0,0 +1,105 @@
+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.junit.jupiter.api.extension.ExtendWith;
+import org.lwjgl.BufferUtils;
+import org.lwjgl.opengl.GL11;
+import org.lwjgl.opengl.GL15;
+import org.lwjgl.opengl.GL20;
+
+import java.nio.FloatBuffer;
+import java.nio.IntBuffer;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNotEquals;
+
+@ExtendWith(GLSMCoreExtension.class)
+class InstancedQuadDrawGLTest {
+
+    private static final String VS = "#version 330 core\nlayout(location=0) in vec2 aPos;\nvoid main(){ gl_Position = vec4(aPos, 0.0, 1.0); }\n";
+    private static final String FS = "#version 330 core\nout vec4 o;\nvoid main(){ o = vec4(1.0); }\n";
+
+    private int program;
+    private int vbo;
+    private int ebo;
+
+    @BeforeEach
+    void setup() {
+        program = buildProgram();
+        GLStateManager.glUseProgram(program);
+
+        final FloatBuffer verts = BufferUtils.createFloatBuffer(8);
+        verts.put(new float[] {0, 0, 1, 0, 1, 1, 0, 1}).flip();
+        vbo = GLStateManager.glGenBuffers();
+        GLStateManager.glBindBuffer(GL15.GL_ARRAY_BUFFER, vbo);
+        GLStateManager.glBufferData(GL15.GL_ARRAY_BUFFER, verts, GL15.GL_STATIC_DRAW);
+        GLStateManager.glVertexAttribPointer(0, 2, GL11.GL_FLOAT, false, 0, 0L);
+        GLStateManager.glEnableVertexAttribArray(0);
+
+        final IntBuffer idx = BufferUtils.createIntBuffer(4);
+        idx.put(new int[] {0, 1, 2, 3}).flip();
+        ebo = GLStateManager.glGenBuffers();
+        GLStateManager.glBindBuffer(GL15.GL_ELEMENT_ARRAY_BUFFER, ebo);
+        GLStateManager.glBufferData(GL15.GL_ELEMENT_ARRAY_BUFFER, idx, GL15.GL_STATIC_DRAW);
+
+        drainErrors();
+    }
+
+    @AfterEach
+    void cleanup() {
+        GLStateManager.glUseProgram(0);
+        if (program != 0) GL20.glDeleteProgram(program);
+        GLStateManager.glBindBuffer(GL15.GL_ARRAY_BUFFER, 0);
+        GLStateManager.glBindBuffer(GL15.GL_ELEMENT_ARRAY_BUFFER, 0);
+        if (vbo != 0) GLStateManager.glDeleteBuffers(vbo);
+        if (ebo != 0) GLStateManager.glDeleteBuffers(ebo);
+        drainErrors();
+    }
+
+    @Test
+    void drawArraysInstanced_quads_noInvalidEnum() {
+        GLStateManager.glDrawArraysInstanced(GL11.GL_QUADS, 0, 4, 3);
+        assertEquals(GL11.GL_NO_ERROR, GL11.glGetError(), "GL_QUADS instanced array draw must be emulated, not rejected");
+    }
+
+    @Test
+    void drawArraysInstanced_triangles_fastPathClean() {
+        GLStateManager.glBindBuffer(GL15.GL_ELEMENT_ARRAY_BUFFER, 0);
+        GLStateManager.glDrawArraysInstanced(GL11.GL_TRIANGLES, 0, 3, 3);
+        assertEquals(GL11.GL_NO_ERROR, GL11.glGetError(), "non-quad instanced array draw passes through cleanly");
+    }
+
+    @Test
+    void drawElementsInstanced_quads_noInvalidEnum() {
+        GLStateManager.glBindBuffer(GL15.GL_ELEMENT_ARRAY_BUFFER, ebo);
+        GLStateManager.glDrawElementsInstanced(GL11.GL_QUADS, 4, GL11.GL_UNSIGNED_INT, 0L, 3);
+        assertEquals(GL11.GL_NO_ERROR, GL11.glGetError(), "GL_QUADS instanced element draw must be emulated, not rejected");
+    }
+
+    private static int buildProgram() {
+        final int vs = compile(GL20.GL_VERTEX_SHADER, VS);
+        final int fs = compile(GL20.GL_FRAGMENT_SHADER, FS);
+        final int p = GL20.glCreateProgram();
+        GL20.glAttachShader(p, vs);
+        GL20.glAttachShader(p, fs);
+        GL20.glLinkProgram(p);
+        assertNotEquals(0, GL20.glGetProgrami(p, GL20.GL_LINK_STATUS), "test shader must link: " + GL20.glGetProgramInfoLog(p, 1024));
+        GL20.glDeleteShader(vs);
+        GL20.glDeleteShader(fs);
+        return p;
+    }
+
+    private static int compile(int type, String src) {
+        final int s = GL20.glCreateShader(type);
+        GL20.glShaderSource(s, src);
+        GL20.glCompileShader(s);
+        assertNotEquals(0, GL20.glGetShaderi(s, GL20.GL_COMPILE_STATUS), "test shader must compile: " + GL20.glGetShaderInfoLog(s, 1024));
+        return s;
+    }
+
+    private static void drainErrors() {
+        while (GL11.glGetError() != GL11.GL_NO_ERROR) { /* clear */ }
+    }
+}

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

@@ -28,7 +28,7 @@ class VertexAttribDefaultBridgeTest {
     @Test
     void testGlColor4fSetsVertexAttrib() {
         GLStateManager.glColor4f(0.5f, 0.25f, 0.75f, 0.8f);
-        GLStateManager.flushDeferredVertexAttribs();
+        GLStateManager.flushDeferredVertexAttribs(false, false, false, false);
 
         float[] color = getVertexAttrib4f(COLOR_ATTRIB);
         assertEquals(0.5f, color[0], EPSILON, "color.r");
@@ -40,7 +40,7 @@ class VertexAttribDefaultBridgeTest {
     @Test
     void testGlNormal3fSetsVertexAttrib() {
         GLStateManager.glNormal3f(0.0f, 1.0f, 0.0f);
-        GLStateManager.flushDeferredVertexAttribs();
+        GLStateManager.flushDeferredVertexAttribs(false, false, false, false);
 
         float[] normal = getVertexAttrib4f(NORMAL_ATTRIB);
         assertEquals(0.0f, normal[0], EPSILON, "normal.x");
@@ -51,7 +51,7 @@ class VertexAttribDefaultBridgeTest {
     @Test
     void testSetLightmapTextureCoordsOnUnit1SetsVertexAttrib() {
         GLStateManager.setLightmapTextureCoords(GL13.GL_TEXTURE1, 240.0f, 128.0f);
-        GLStateManager.flushDeferredVertexAttribs();
+        GLStateManager.flushDeferredVertexAttribs(false, false, false, false);
 
         float[] lm = getVertexAttrib4f(SECONDARY_UV_ATTRIB);
         assertEquals(240.0f, lm[0], EPSILON, "lightmap.s");
@@ -64,7 +64,7 @@ class VertexAttribDefaultBridgeTest {
     void testGlTexCoord2fSetsVertexAttrib() {
         // glTexCoord2f outside recording → sets default vertex attrib 2 (PRIMARY_UV)
         GLStateManager.glTexCoord2f(0.5f, 0.75f);
-        GLStateManager.flushDeferredVertexAttribs();
+        GLStateManager.flushDeferredVertexAttribs(false, false, false, false);
 
         float[] uv = getVertexAttrib4f(PRIMARY_UV_ATTRIB);
         assertEquals(0.5f, uv[0], EPSILON, "texcoord.s");
@@ -77,7 +77,7 @@ class VertexAttribDefaultBridgeTest {
         // Second call is a cache hit — changeColor not called.
         // Vertex attrib should still hold the correct value from the first call.
         GLStateManager.glColor4f(0.3f, 0.6f, 0.9f, 1.0f);
-        GLStateManager.flushDeferredVertexAttribs();
+        GLStateManager.flushDeferredVertexAttribs(false, false, false, false);
 
         float[] color = getVertexAttrib4f(COLOR_ATTRIB);
         assertEquals(0.3f, color[0], EPSILON, "color.r after dedup");
@@ -89,7 +89,7 @@ class VertexAttribDefaultBridgeTest {
     @Test
     void testCompileMode_DoesNotSetVertexAttrib() {
         GLStateManager.glColor4f(0.1f, 0.2f, 0.3f, 1.0f);
-        GLStateManager.flushDeferredVertexAttribs();
+        GLStateManager.flushDeferredVertexAttribs(false, false, false, false);
 
         int listId = GLStateManager.glGenLists(1);
         GLStateManager.glNewList(listId, org.lwjgl.opengl.GL11.GL_COMPILE);

glsm/src/test/java/com/gtnewhorizons/angelica/glsm/ffp/ProgramUniformTrackingTest.java

@@ -0,0 +1,63 @@
+package com.gtnewhorizons.angelica.glsm.ffp;
+
+import com.gtnewhorizons.angelica.glsm.GLSMCoreExtension;
+import com.gtnewhorizons.angelica.glsm.GLStateManager;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
+import org.lwjgl.opengl.GL11;
+import org.lwjgl.opengl.GL20;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNotEquals;
+
+@ExtendWith(GLSMCoreExtension.class)
+class ProgramUniformTrackingTest {
+
+    private static Program buildProgram(boolean hasColor) {
+        final VertexKey vk = VertexKey.fromState(hasColor, false, false, false, 0);
+        final FragmentKey fk = FragmentKey.fromState();
+        return Program.create(vk, fk, VertexShaderGenerator.generate(vk), FragmentShaderGenerator.generate(fk), null);
+    }
+
+    @Test
+    void matrixTrackingIsPerProgram() {
+        final Uniforms uniforms = new Uniforms();
+        final Program a = buildProgram(true);
+        final Program b = buildProgram(false);
+        assertNotEquals(a.getProgramId(), b.getProgramId(), "distinct vertex keys must yield distinct programs");
+        try {
+            GLStateManager.glMatrixMode(GL11.GL_MODELVIEW);
+            GLStateManager.glPushMatrix();
+            GLStateManager.glLoadIdentity();
+
+            GLStateManager.glTranslatef(1.0F, 2.0F, 3.0F);
+            final int genA = GLStateManager.mvGeneration;
+            GL20.glUseProgram(a.getProgramId());
+            uniforms.upload(a);
+            assertEquals(genA, a.uploadState.mvGen, "A records the mv generation it uploaded");
+
+            GLStateManager.glTranslatef(4.0F, 0.0F, 0.0F);
+            final int genB = GLStateManager.mvGeneration;
+            assertNotEquals(genA, genB);
+            GL20.glUseProgram(b.getProgramId());
+            uniforms.upload(b);
+            assertEquals(genB, b.uploadState.mvGen, "B records the new mv generation");
+            assertEquals(genA, a.uploadState.mvGen, "A is unchanged -- tracking is per-program, not global");
+
+            // Return to A with the modelview still at genB: A is stale -> re-uploads and catches up.
+            GL20.glUseProgram(a.getProgramId());
+            uniforms.upload(a);
+            assertEquals(genB, a.uploadState.mvGen, "A re-uploads on return and catches up to genB");
+
+            // Re-upload A with no change: gate (mvGeneration == A.mvGen) is satisfied -> skip.
+            uniforms.upload(a);
+            assertEquals(genB, a.uploadState.mvGen, "A already current -> skipped");
+
+            GLStateManager.glPopMatrix();
+        } finally {
+            GL20.glUseProgram(0);
+            a.destroy();
+            b.destroy();
+        }
+    }
+}

glsm/src/test/java/com/gtnewhorizons/angelica/glsm/recording/IndexedDrawBatchBuilderTest.java

@@ -3,10 +3,10 @@ package com.gtnewhorizons.angelica.glsm.recording;
 import com.gtnewhorizon.gtnhlib.bytebuf.MemoryUtilities;
 import com.gtnewhorizons.angelica.glsm.DisplayListManager;
 import com.gtnewhorizons.angelica.glsm.GLStateManager;
+import com.gtnewhorizons.angelica.glsm.ffp.VAOManager;
 import com.gtnewhorizons.angelica.glsm.recording.commands.BatchedIndexedDrawCmd;
 import com.gtnewhorizons.angelica.glsm.recording.commands.IndexedDrawBatch;
 import com.gtnewhorizons.angelica.glsm.recording.support.DisplayListTestFixture;
-import com.gtnewhorizons.angelica.glsm.states.VertexAttribState;
 import org.junit.jupiter.api.Test;
 import org.junit.jupiter.params.ParameterizedTest;
 import org.junit.jupiter.params.provider.ValueSource;
@@ -307,10 +307,10 @@ class IndexedDrawBatchBuilderTest extends DisplayListTestFixture {
         GLStateManager.glBindBuffer(GL15.GL_ARRAY_BUFFER, 0);
         final ByteBuffer colorSlice = clientData.duplicate().order(ByteOrder.nativeOrder());
         colorSlice.position(8);
-        VertexAttribState.set(0, 2, GL11.GL_FLOAT, false, POS_COLOR_STRIDE, clientData, 0);
-        VertexAttribState.setEnabled(0, true);
-        VertexAttribState.set(1, 4, GL11.GL_UNSIGNED_BYTE, true, POS_COLOR_STRIDE, colorSlice, 0);
-        VertexAttribState.setEnabled(1, true);
+        VAOManager.setAttribute(0, 2, GL11.GL_FLOAT, false, POS_COLOR_STRIDE, clientData);
+        VAOManager.enableAttribute(0);
+        VAOManager.setAttribute(1, 4, GL11.GL_UNSIGNED_BYTE, true, POS_COLOR_STRIDE, colorSlice);
+        VAOManager.enableAttribute(1);
         GLStateManager.glBindVertexArray(0);
 
         final int ebo = uploadEbo(GL11.GL_UNSIGNED_SHORT, 0, 1, 2);

glsm/src/test/java/com/gtnewhorizons/angelica/glsm/states/PixelUnpackStateTest.java

@@ -0,0 +1,61 @@
+package com.gtnewhorizons.angelica.glsm.states;
+
+import org.junit.jupiter.api.Test;
+import org.lwjgl.opengl.GL11;
+import org.lwjgl.opengl.GL12;
+
+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.assertTrue;
+
+class PixelUnpackStateTest {
+
+    @Test
+    void defaults() {
+        assertTrue(PixelUnpackState.DEFAULT.isDefault());
+        assertEquals(4, PixelUnpackState.DEFAULT.alignment());
+        assertEquals(0, PixelUnpackState.DEFAULT.rowLength());
+        assertFalse(PixelUnpackState.DEFAULT.swapBytes());
+        assertFalse(PixelUnpackState.DEFAULT.lsbFirst());
+    }
+
+    @Test
+    void withUpdatesUnpackParams() {
+        PixelUnpackState s = PixelUnpackState.DEFAULT
+            .with(GL11.GL_UNPACK_ALIGNMENT, 1)
+            .with(GL11.GL_UNPACK_ROW_LENGTH, 64)
+            .with(GL11.GL_UNPACK_SKIP_ROWS, 2)
+            .with(GL11.GL_UNPACK_SKIP_PIXELS, 3)
+            .with(GL12.GL_UNPACK_IMAGE_HEIGHT, 32)
+            .with(GL12.GL_UNPACK_SKIP_IMAGES, 1)
+            .with(GL11.GL_UNPACK_SWAP_BYTES, 1)
+            .with(GL11.GL_UNPACK_LSB_FIRST, 1);
+        assertEquals(new PixelUnpackState(1, 64, 2, 3, 32, 1, true, true), s);
+        assertFalse(s.isDefault());
+    }
+
+    @Test
+    void invalidValuesIgnored() {
+        assertSame(PixelUnpackState.DEFAULT, PixelUnpackState.DEFAULT.with(GL11.GL_UNPACK_ALIGNMENT, 3));
+        assertSame(PixelUnpackState.DEFAULT, PixelUnpackState.DEFAULT.with(GL11.GL_UNPACK_ALIGNMENT, 0));
+        assertSame(PixelUnpackState.DEFAULT, PixelUnpackState.DEFAULT.with(GL11.GL_UNPACK_ROW_LENGTH, -1));
+        assertSame(PixelUnpackState.DEFAULT, PixelUnpackState.DEFAULT.with(GL11.GL_UNPACK_SKIP_ROWS, -5));
+        assertSame(PixelUnpackState.DEFAULT, PixelUnpackState.DEFAULT.with(GL12.GL_UNPACK_IMAGE_HEIGHT, -1));
+    }
+
+    @Test
+    void booleansAcceptAnyNonzero() {
+        assertTrue(PixelUnpackState.DEFAULT.with(GL11.GL_UNPACK_SWAP_BYTES, 2).swapBytes());
+        assertTrue(PixelUnpackState.DEFAULT.with(GL11.GL_UNPACK_LSB_FIRST, -1).lsbFirst());
+        PixelUnpackState on = PixelUnpackState.DEFAULT.with(GL11.GL_UNPACK_SWAP_BYTES, 1);
+        assertFalse(on.with(GL11.GL_UNPACK_SWAP_BYTES, 0).swapBytes());
+    }
+
+    @Test
+    void packAndUnknownPnamesIgnored() {
+        assertSame(PixelUnpackState.DEFAULT, PixelUnpackState.DEFAULT.with(GL11.GL_PACK_ALIGNMENT, 1));
+        assertSame(PixelUnpackState.DEFAULT, PixelUnpackState.DEFAULT.with(GL11.GL_PACK_ROW_LENGTH, 16));
+        assertSame(PixelUnpackState.DEFAULT, PixelUnpackState.DEFAULT.with(0x1234, 1));
+    }
+}

lwjgl3-backend/build.gradle.kts

@@ -34,6 +34,10 @@ repositories {
         name = "GTNH Maven"
         url = uri("https://nexus.gtnewhorizons.com/repository/public/")
     }
+    maven {
+        name = "Minecraft Libraries"
+        url = uri("https://libraries.minecraft.net")
+    }
     maven {
         name = "Forge"
         url = uri("https://maven.minecraftforge.net/")

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

@@ -23,6 +23,9 @@ import org.lwjgl.opengl.GL44C;
 import org.lwjgl.opengl.GL45C;
 import org.lwjgl.opengl.GLCapabilities;
 import org.lwjgl.opengl.GLDebugMessageCallback;
+import org.lwjgl.sdl.SDL_DropEvent;
+import org.lwjgl.sdl.SDL_EventFilter;
+import org.lwjgl.sdl.SDLEvents;
 import org.lwjgl.system.MemoryStack;
 
 import java.nio.ByteBuffer;
@@ -31,6 +34,10 @@ import java.nio.FloatBuffer;
 import java.nio.IntBuffer;
 import java.nio.charset.StandardCharsets;
 import java.nio.ShortBuffer;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+import java.util.concurrent.ConcurrentLinkedQueue;
 
 /**
  * LWJGL3 GL implementation of {@link RenderBackend}.
@@ -43,6 +50,10 @@ public final class Lwjgl3GLRenderBackend extends RenderBackend {
     private GLDebugMessageCallback debugCallback;
     private boolean debugOutputActive;
 
+    private SDL_EventFilter dropEventFilter;
+    private final ConcurrentLinkedQueue<String> droppedFiles = new ConcurrentLinkedQueue<>();
+    private volatile boolean watchingDrops;
+
     @Override
     public void init() {
         caps = GL.getCapabilities();
@@ -50,7 +61,49 @@ public final class Lwjgl3GLRenderBackend extends RenderBackend {
 
     @Override
     public void shutdown() {
-        // no-op
+        stopFileDrop();
+    }
+
+    @Override
+    public boolean supportsFileDrop() {
+        return true;
+    }
+
+    @Override
+    public void startFileDrop() {
+        if (watchingDrops) return;
+        dropEventFilter = SDL_EventFilter.create((userData, eventPtr) -> {
+            if (SDL_DropEvent.ntype(eventPtr) == SDLEvents.SDL_EVENT_DROP_FILE) {
+                final String path = SDL_DropEvent.ndataString(eventPtr);
+                if (path != null && !path.isEmpty()) {
+                    droppedFiles.add(path);
+                }
+            }
+            return true;
+        });
+        SDLEvents.SDL_AddEventWatch(dropEventFilter, 0L);
+        watchingDrops = true;
+    }
+
+    @Override
+    public void stopFileDrop() {
+        if (!watchingDrops) return;
+        SDLEvents.SDL_RemoveEventWatch(dropEventFilter, 0L);
+        dropEventFilter.free();
+        dropEventFilter = null;
+        droppedFiles.clear();
+        watchingDrops = false;
+    }
+
+    @Override
+    public List<String> pollDroppedFiles() {
+        if (droppedFiles.isEmpty()) return Collections.emptyList();
+        final List<String> out = new ArrayList<>();
+        String p;
+        while ((p = droppedFiles.poll()) != null) {
+            out.add(p);
+        }
+        return out;
     }
 
     @Override
@@ -295,6 +348,16 @@ public final class Lwjgl3GLRenderBackend extends RenderBackend {
         GL31C.glDrawElementsInstanced(mode, count, type, indices, primcount);
     }
 
+    @Override
+    public void drawArraysInstanced(int mode, int first, int count, int primcount) {
+        GL31C.glDrawArraysInstanced(mode, first, count, primcount);
+    }
+
+    @Override
+    public void provokingVertex(int provokeMode) {
+        GL32C.glProvokingVertex(provokeMode);
+    }
+
     @Override
     public void multiDrawElementsIndirect(int mode, int type, long indirect, int drawcount, int stride) {
         GL43C.glMultiDrawElementsIndirect(mode, type, indirect, drawcount, stride);
@@ -491,11 +554,6 @@ public final class Lwjgl3GLRenderBackend extends RenderBackend {
         GL11C.glPixelStorei(pname, param);
     }
 
-    @Override
-    public void pixelStoref(int pname, float param) {
-        GL11C.glPixelStoref(pname, param);
-    }
-
     @Override
     public void sampleCoverage(float value, boolean invert) {
         GL13C.glSampleCoverage(value, invert);
@@ -808,6 +866,11 @@ public final class Lwjgl3GLRenderBackend extends RenderBackend {
         GL20C.glUniform4i(location, v0, v1, v2, v3);
     }
 
+    @Override
+    public void uniform2(int location, FloatBuffer value) {
+        GL20C.glUniform2fv(location, value);
+    }
+
     @Override
     public void uniform3(int location, FloatBuffer value) {
         GL20C.glUniform3fv(location, value);
@@ -818,6 +881,26 @@ public final class Lwjgl3GLRenderBackend extends RenderBackend {
         GL20C.glUniform4fv(location, value);
     }
 
+    @Override
+    public void uniform1iv(int location, IntBuffer value) {
+        GL20C.glUniform1iv(location, value);
+    }
+
+    @Override
+    public void uniform2iv(int location, IntBuffer value) {
+        GL20C.glUniform2iv(location, value);
+    }
+
+    @Override
+    public void uniform3iv(int location, IntBuffer value) {
+        GL20C.glUniform3iv(location, value);
+    }
+
+    @Override
+    public void uniform4iv(int location, IntBuffer value) {
+        GL20C.glUniform4iv(location, value);
+    }
+
     @Override
     public void uniformMatrix3(int location, boolean transpose, FloatBuffer value) {
         GL20C.glUniformMatrix3fv(location, transpose, value);
@@ -1028,6 +1111,11 @@ public final class Lwjgl3GLRenderBackend extends RenderBackend {
         GL30C.glBindVertexArray(array);
     }
 
+    @Override
+    public boolean isVertexArray(int array) {
+        return GL30C.glIsVertexArray(array);
+    }
+
     @Override
     public void vertexAttribPointer(int index, int size, int type, boolean normalized, int stride, long pointer) {
         GL20C.glVertexAttribPointer(index, size, type, normalized, stride, pointer);
@@ -1318,11 +1406,14 @@ public final class Lwjgl3GLRenderBackend extends RenderBackend {
 
     @Override
     public boolean supportsDebugOutput() {
-        return caps != null && caps.OpenGL43;
+        return caps != null && (caps.OpenGL43 || caps.GL_KHR_debug);
     }
 
     @Override
     public int setupDebugOutput(DebugMessageHandler handler) {
+        if (caps == null || !(caps.OpenGL43 || caps.GL_KHR_debug)) {
+            return 0;
+        }
         debugCallback = GLDebugMessageCallback.create(
             (source, type, id, severity, length, message, userParam) -> {
                 final String msg = GLDebugMessageCallback.getMessage(length, message);
@@ -1350,6 +1441,9 @@ public final class Lwjgl3GLRenderBackend extends RenderBackend {
 
     @Override
     public int disableDebugOutput() {
+        if (caps == null || !(caps.OpenGL43 || caps.GL_KHR_debug)) {
+            return 0;
+        }
         GL43C.glDebugMessageCallback(null, 0L);
         if (debugCallback != null) {
             debugCallback.free();

settings.gradle.kts

@@ -16,7 +16,7 @@ pluginManagement {
 }
 
 plugins {
-    id("com.gtnewhorizons.gtnhsettingsconvention") version ("2.0.24")
+    id("com.gtnewhorizons.gtnhsettingsconvention") version ("2.0.26")
 }
 
 include("glsm")

src/main/java/com/gtnewhorizons/angelica/client/rendering/DeferredDrawBatcher.java

@@ -25,6 +25,7 @@ public class DeferredDrawBatcher {
 
     @Getter private static boolean active = false;
     private static DeferredBatchTessellator batchTessellator;
+    private static long entryStateKey;
 
     private DeferredDrawBatcher() {}
 
@@ -41,13 +42,14 @@ public class DeferredDrawBatcher {
         batchTessellator.clearRanges();
         batchTessellator.setParentTessellator(Tessellator.instance);
         batchTessellator.snapshotDefaultModelview();
+        entryStateKey = captureStateKey();
         TessellatorManager.startCapturingDirect(batchTessellator);
     }
 
     /**
      * Exit deferred mode and flush all captured batches. Groups entries by state key
-     * and vertex format, issues one draw per unique group. Restores the GL state that
-     * was active for the last group so vanilla sees consistent state.
+     * and vertex format, issues one draw per unique group. Restores the bracket's entry
+     * state so the trailing vanilla Tessellator.draw() renders with the layer atlas.
      */
     public static void exitAndFlush() {
         active = false;
@@ -56,6 +58,7 @@ public class DeferredDrawBatcher {
         if (!ranges.isEmpty()) {
             ranges.sort(Comparator.comparingLong(DeferredBatchTessellator.DrawRange::stateKey));
             flushSorted(ranges);
+            applyStateKey(entryStateKey);
         }
 
         TessellatorManager.stopCapturingDirect();
@@ -147,7 +150,8 @@ public class DeferredDrawBatcher {
      * - fog state (mode, color, start/end — constant for the frame)
      */
     static long captureStateKey() {
-        final int textureId = GLStateManager.getTextures().getTextureUnitBindings(0).getBinding();
+        final int activeUnit = GLStateManager.getActiveTextureUnit();
+        final int textureId = GLStateManager.getTextures().getTextureUnitBindings(activeUnit).getBinding();
         final int srcRgb = GLStateManager.getBlendState().getSrcRgb();
         final int dstRgb = GLStateManager.getBlendState().getDstRgb();
         final boolean blendEnabled = GLStateManager.getBlendMode().isEnabled();

src/main/java/com/gtnewhorizons/angelica/compat/ModStatus.java

@@ -1,5 +1,6 @@
 package com.gtnewhorizons.angelica.compat;
 
+import com.falsepattern.endlessids.config.GeneralConfig;
 import com.gtnewhorizons.angelica.compat.backhand.BackhandReflectionCompat;
 import com.gtnewhorizons.angelica.helpers.LoadControllerHelper;
 import cpw.mods.fml.common.Loader;
@@ -14,6 +15,8 @@ public class ModStatus {
     public static boolean isBetterCrashesLoaded;
     public static boolean isNEIDLoaded;
     public static boolean isNEIDMetadataExtended;
+    public static boolean isEIDLoaded;
+    public static boolean isMetadataExtended;
     public static boolean isLotrLoaded;
     public static boolean isChunkAPILoaded;
     public static boolean isEIDBiomeLoaded;
@@ -35,9 +38,9 @@ public class ModStatus {
 
         isBetterCrashesLoaded = Loader.isModLoaded("bettercrashes");
         isNEIDLoaded = Loader.isModLoaded("neid");
+        isEIDLoaded = Loader.isModLoaded("endlessids");
         isLotrLoaded = Loader.isModLoaded("lotr");
         isChunkAPILoaded = Loader.isModLoaded("chunkapi");
-        isEIDBiomeLoaded = Loader.isModLoaded("endlessids_biome");
         isXaerosMinimapLoaded = Loader.isModLoaded("XaeroMinimap");
         isHoloInventoryLoaded = Loader.isModLoaded("holoinventory");
         isBattlegearLoaded = Loader.isModLoaded("battlegear2");
@@ -65,5 +68,15 @@ public class ModStatus {
                 isNEIDMetadataExtended = true;
             }
         }
+
+        boolean eidBlockItemExtended = false;
+        boolean eidBiomeExtended = false;
+        if (isEIDLoaded) {
+            eidBlockItemExtended = GeneralConfig.extendBlockItem;
+            eidBiomeExtended = GeneralConfig.extendBiome;
+        }
+
+        isEIDBiomeLoaded = eidBiomeExtended || Loader.isModLoaded("endlessids_biome");
+        isMetadataExtended = isNEIDMetadataExtended || eidBlockItemExtended;
     }
 }

src/main/java/com/gtnewhorizons/angelica/config/AngelicaConfig.java

@@ -227,13 +227,13 @@ public class AngelicaConfig {
 
     @Config.Comment({"Block corners and edges between chunks might have \"cracks\" (various lines/dots) in them.",
             "While using \"Compact Vertex Format\" makes the situation even worse.",
-            "This option fixes it.",
-            "Requires texture reloading (F3 + T) after changing this option to take effect"})
-    @Config.DefaultBoolean(true)
-    public static boolean fixBlockCrack;
+            "This option fixes it, though may lead to other visual artifacts.",
+            "Requires game restart after changing this option to take effect"})
+    @Config.DefaultBoolean(false)
+    public static boolean blockCrackFix;
 
     @Config.Comment({
-            "The \"epsilon\" value for the fixBlockCrack option. ",
+            "The \"epsilon\" value for the blockCrackFix option. ",
             "Set this a bit higher if you can still see lines/dots between solid blocks in dark areas.",
             "May cause intense flickering (z-fighting) between blocks if the value is too high"
     })
@@ -241,7 +241,7 @@ public class AngelicaConfig {
     @Config.DefaultDouble(0.001)
     public static double blockCrackFixEpsilon;
 
-    @Config.Comment("Block classes that have bugs when rendering with the fixBlockCrack can be put here to avoid manipulating them")
+    @Config.Comment("Block classes that have bugs when rendering with the blockCrackFix can be put here to avoid manipulating them")
     @Config.DefaultStringList({
             "net.minecraft.block.BlockCauldron",
             "net.minecraft.block.BlockStairs"
@@ -249,7 +249,7 @@ public class AngelicaConfig {
     public static String[] blockCrackFixBlacklist;
 
     @Config.Comment({"Block classes that have render pass other than 0 but still need to be manipulated.",
-                     "Add a block class here if you see flickering (z-fighting) with fixBlockCrack enabled"
+                     "Add a block class here if you see flickering (z-fighting) with blockCrackFix enabled"
     })
     @Config.DefaultStringList({
             "gregtech.common.blocks.BlockOres",
@@ -269,6 +269,13 @@ public class AngelicaConfig {
     @Config.DefaultStringList({"jewelrycraft2:blockCrystal"})
     public static String[] alwaysTranslucentSprites;
 
+    @Config.Comment({"TileEntity classnames whose render bounds change at runtime (e.g. OpenBlocks Guide).",
+                     "These are always rendered and frustum-tested against their live bounds instead of the cached."})
+    @Config.DefaultStringList({"openblocks.common.tileentity.TileEntityGuide",
+                               "openblocks.common.tileentity.TileEntityBuilderGuide"})
+    @Config.RequiresMcRestart
+    public static String[] dynamicBoundsTileEntities;
+
     @Config.Comment("Register HardcodedCustomUniforms in Iris Shaders. May help with compatibility in certain shader packs")
     @Config.DefaultBoolean(false)
     public static boolean enableHardcodedCustomUniforms;
@@ -310,6 +317,16 @@ public class AngelicaConfig {
         @Config.DefaultBoolean(true)
         @Config.RequiresMcRestart
         public boolean narrowEars;
+
+        @Config.Comment("Narrow Fisk's Superheroes transformer exclusions to allow GL redirection")
+        @Config.DefaultBoolean(true)
+        @Config.RequiresMcRestart
+        public boolean narrowFiskHeroes;
+
+        @Config.Comment("Narrow FoamFix transformer exclusions to allow GL redirection in its repackaged Ears")
+        @Config.DefaultBoolean(true)
+        @Config.RequiresMcRestart
+        public boolean narrowFoamFix;
     }
 
     @Config.Comment("Renders chunks before neighbors are ready. Improves loading at render distance edges, useful for low render distance servers.")
@@ -340,4 +357,13 @@ public class AngelicaConfig {
     @Config.RequiresMcRestart
     public static boolean disableErrorChecks;
 
+    @Config.Comment("Fixes various issues with entity overlays, such as z-fighting and eyes.")
+    @Config.DefaultBoolean(true)
+    @Config.RequiresMcRestart
+    public static boolean entityOverlayFixes;
+
+    @Config.Comment("Swap the vanilla damage overlay with one similar to modern. Fixes specific issues with z-fighting.")
+    @Config.DefaultBoolean(true)
+    @Config.RequiresMcRestart
+    public static boolean entityModernDamageOverlay;
 }

src/main/java/com/gtnewhorizons/angelica/event/ClientEvent.java

@@ -0,0 +1,36 @@
+package com.gtnewhorizons.angelica.event;
+
+import net.minecraft.client.renderer.EntityRenderer;
+import net.minecraftforge.eventbus.api.bus.EventBus;
+import net.minecraftforge.eventbus.api.event.MutableEvent;
+
+public class ClientEvent extends MutableEvent {
+    public static final EventBus<ClientEvent> BUS = EventBus.create(ClientEvent.class);
+
+    public final ClientEventType event;
+    public final EntityRenderer renderer;
+    public final float partialTicks;
+
+    private ClientEvent(ClientEventType event) {
+        this.event = event;
+        this.renderer = null;
+        this.partialTicks = 0;
+    }
+
+    private ClientEvent(ClientEventType event, EntityRenderer renderer, float partialTicks) {
+        this.event = event;
+        this.renderer = renderer;
+        this.partialTicks = partialTicks;
+    }
+
+    public static void post(ClientEventType event, EntityRenderer renderer, float partialTicks) {
+        if (!BUS.hasListeners()) return;
+        BUS.post(new ClientEvent(event, renderer, partialTicks));
+    }
+
+    public static void post(ClientEventType event) {
+        if (!BUS.hasListeners()) return;
+        BUS.post(new ClientEvent(event));
+    }
+}
+

src/main/java/com/gtnewhorizons/angelica/event/ClientEventType.java

@@ -0,0 +1,8 @@
+package com.gtnewhorizons.angelica.event;
+
+public enum ClientEventType {
+    PRE_RENDER_GUI,
+    PRE_RENDER_HUD,
+    POST_RENDER_HUD,
+    ON_TICK,
+}

src/main/java/com/gtnewhorizons/angelica/hudcaching/HUDCaching.java

@@ -6,11 +6,12 @@ import com.gtnewhorizon.gtnhlib.client.renderer.postprocessing.CustomFramebuffer
 import com.gtnewhorizon.gtnhlib.client.renderer.postprocessing.SharedDepthFramebuffer;
 import com.gtnewhorizon.gtnhlib.client.renderer.vao.IVertexArrayObject;
 import com.gtnewhorizon.gtnhlib.client.renderer.vao.VertexBufferType;
-import com.gtnewhorizon.gtnhlib.client.renderer.vbo.IVertexBuffer;
 import com.gtnewhorizon.gtnhlib.client.renderer.vertex.DefaultVertexFormat;
 import com.gtnewhorizons.angelica.compat.ModStatus;
 import com.gtnewhorizons.angelica.compat.holoinventory.HoloInventoryReflectionCompat;
 import com.gtnewhorizons.angelica.config.AngelicaConfig;
+import com.gtnewhorizons.angelica.event.ClientEvent;
+import com.gtnewhorizons.angelica.event.ClientEventType;
 import com.gtnewhorizons.angelica.glsm.GLStateManager;
 import com.gtnewhorizons.angelica.glsm.hooks.GLSMConfig;
 import com.gtnewhorizons.angelica.mixins.interfaces.GuiIngameAccessor;
@@ -65,6 +66,8 @@ public class HUDCaching {
     }
 
     public static void renderCachedHud(EntityRenderer renderer, GuiIngame ingame, float partialTicks, boolean hasScreen, int mouseX, int mouseY) {
+        ClientEvent.post(ClientEventType.PRE_RENDER_GUI, renderer, partialTicks);
+        ClientEvent.post(ClientEventType.PRE_RENDER_HUD, renderer, partialTicks);
         if (ModStatus.isXaerosMinimapLoaded && ingame instanceof GuiIngameForge) {
             // this used to be called by asming into renderGameOverlay, but we removed it
             XaeroMinimapCore.beforeIngameGuiRender(partialTicks);
@@ -78,6 +81,7 @@ public class HUDCaching {
 
         if (!AngelicaConfig.hudCachingActive || mc.displayWidth < 16 || mc.displayHeight < 16) {
             ingame.renderGameOverlay(partialTicks, hasScreen, mouseX, mouseY);
+            ClientEvent.post(ClientEventType.POST_RENDER_HUD, renderer, partialTicks);
             return;
         }
 
@@ -170,6 +174,8 @@ public class HUDCaching {
 
         GLStateManager.tryBlendFuncSeparate(GL11.GL_ONE, GL11.GL_ONE_MINUS_SRC_ALPHA, GL11.GL_ONE, GL11.GL_ZERO);
         mc.getTextureManager().bindTexture(Gui.icons);
+
+        ClientEvent.post(ClientEventType.POST_RENDER_HUD, renderer, partialTicks);
     }
 
     /**

src/main/java/com/gtnewhorizons/angelica/loading/AngelicaClientTweaker.java

@@ -186,6 +186,8 @@ public final class AngelicaClientTweaker implements IFMLLoadingPlugin, IEarlyMix
             narrowTransformerConfig("AdvancedLightsabers", AngelicaConfig.transformerCompat.narrowAdvancedLightsabers);
             narrowTransformerConfig("Alfheim", AngelicaConfig.transformerCompat.narrowAlfheim);
             narrowTransformerConfig("Ears", AngelicaConfig.transformerCompat.narrowEars);
+            narrowTransformerConfig("FiskHeroes", AngelicaConfig.transformerCompat.narrowFiskHeroes);
+            narrowTransformerConfig("FoamFix", AngelicaConfig.transformerCompat.narrowFoamFix);
 
             tweaks.add("com.gtnewhorizons.angelica.loading.fml.tweakers.IncompatibleModsDisablerTweaker");
             if (AngelicaConfig.enableHudCaching) {

src/main/java/com/gtnewhorizons/angelica/loading/fml/transformers/CeleritasBlockTransformer.java

@@ -17,7 +17,6 @@ public class CeleritasBlockTransformer implements IClassTransformer {
     public CeleritasBlockTransformer() {
         this.inner = new CeleritasBlockTransform(AngelicaClientTweaker.isObfEnv());
         this.exclusions = inner.getTransformerExclusions();
-        this.inner.setCeleritasSetting();
     }
 
     /**

src/main/java/com/gtnewhorizons/angelica/loading/shared/transformers/CeleritasBlockTransform.java

@@ -31,16 +31,21 @@ public final class CeleritasBlockTransform implements Opcodes {
     private static final Logger LOGGER = LogManager.getLogger("CeleritasBlockTransformer");
     private static final String BlockClass = "net/minecraft/block/Block";
     private static final String ThreadedBlockData = "com/gtnewhorizons/angelica/client/rendering/ThreadedBlockData";
+    /** All classes under <tt>net.minecraft.block.Block*</tt> are Block subclasses save for these. */
+    private static final String[] VanillaBlockExclusions = {
+        "net/minecraft/block/IGrowable",
+        "net/minecraft/block/ITileEntityProvider",
+        "net/minecraft/block/BlockEventData",
+        "net/minecraft/block/BlockSourceImpl",
+        "net/minecraft/block/material/"
+    };
 
     private final Map<String, String> fieldNameToRedirect = new HashMap<>();
-    private final Set<String> blockSubclasses = Collections.newSetFromMap(new ConcurrentHashMap<>());
+    private final Set<String> moddedBlockSubclasses = Collections.newSetFromMap(new ConcurrentHashMap<>());
     // Block subclass owners we shouldn't redirect because they shadow some fields we want to redirect
     private final Set<String> blockSubclassExclusions = Collections.newSetFromMap(new ConcurrentHashMap<>());
     private final ClassConstantPoolParser cstPoolParser;
 
-    private final MethodHandle celeritasEnabledGetter;
-    private boolean isCeleritasEnabled;
-
     public CeleritasBlockTransform(boolean isObf) {
         final List<Pair<String, String>> mappings = ImmutableList.of(
             Pair.of("minX", "field_149759_B"),
@@ -56,37 +61,30 @@ public final class CeleritasBlockTransform implements Opcodes {
         }
 
         this.cstPoolParser = new ClassConstantPoolParser(this.fieldNameToRedirect.keySet().toArray(new String[0]));
+    }
 
-        blockSubclasses.add(BlockClass);
-
-        try {
-            // Needed because the config is loaded in LaunchClassLoader, but we need to access it in the parent system loader.
-            final Class<?> angelicaConfig = Class.forName("com.gtnewhorizons.angelica.config.AngelicaConfig", true, Launch.classLoader);
-            celeritasEnabledGetter = MethodHandles.lookup().findStaticGetter(angelicaConfig, "enableCeleritas", boolean.class);
-        } catch (ReflectiveOperationException e) {
-            throw new RuntimeException(e);
+    private boolean isVanillaBlockSubclass(String className) {
+        if (!className.startsWith(BlockClass)) {
+            return false;
         }
-    }
-
-    public void setCeleritasSetting() {
-        isCeleritasEnabled = true;
-    }
-
-    private boolean isCeleritasEnabled() {
-        if (isCeleritasEnabled) return true;
-        try {
-            return (boolean) celeritasEnabledGetter.invokeExact();
-        } catch (Throwable e) {
-            throw new RuntimeException(e);
+        for (String exclusion : VanillaBlockExclusions) {
+            if (className.startsWith(exclusion)) {
+                return false;
+            }
         }
+        return true;
     }
 
-    // This method needs to be called for every class, including the ones we don't want to transform
+    private boolean isBlockSubclass(String className) {
+        return isVanillaBlockSubclass(className) || moddedBlockSubclasses.contains(className);
+    }
+
+    // This method needs to be called for every class, including the ones we don't want to transform.
+    // Vanilla blocks are recognized by name; only modded subclasses need tracking, and FML's
+    // EventSubscriptionTransformer guarantees a modded class's superclass loads first.
     public void trackBlockSubclasses(String className, String superClassName) {
-        // It works because the deepest subclasses are always transformed first due to
-        // ForgeEventTransformer recursive superclass loading
-        if (blockSubclasses.contains(superClassName)) {
-            blockSubclasses.add(className);
+        if (!isVanillaBlockSubclass(className) && isBlockSubclass(superClassName)) {
+            moddedBlockSubclasses.add(className);
 
             if (blockSubclassExclusions.contains(superClassName)) {
                 LOGGER.info("Class {} extends a class with shadowed block bounds fields and will be skipped from redirecting", className);
@@ -110,9 +108,6 @@ public final class CeleritasBlockTransform implements Opcodes {
 
     /** @return Was the class changed? */
     public boolean transformClassNode(String transformedName, ClassNode cn) {
-        if (!isCeleritasEnabled()) {
-            return false;
-        }
         boolean changed = false;
         if (BlockClass.equals(cn.name)) {
             changed = cn.fields.removeIf(field -> fieldNameToRedirect.containsKey(field.name));
@@ -124,7 +119,8 @@ public final class CeleritasBlockTransform implements Opcodes {
     }
 
     private void trackBlockShadowingFields(ClassNode cn) {
-        if (blockSubclasses.contains(cn.name)) {
+        // Only modded subclasses can shadow; vanilla declares these fields solely in Block.
+        if (moddedBlockSubclasses.contains(cn.name)) {
             for (FieldNode field : cn.fields) {
                 if (fieldNameToRedirect.containsKey(field.name)) {
                     LOGGER.info("Class '{}' shadows one or more block bounds fields, these accesses won't be redirected!", cn.name);
@@ -141,7 +137,7 @@ public final class CeleritasBlockTransform implements Opcodes {
             for (AbstractInsnNode node = mn.instructions.getFirst(); node != null; node = node.getNext()) {
                 if ((node.getOpcode() == GETFIELD || node.getOpcode() == PUTFIELD) && node instanceof FieldInsnNode fNode) {
                     String newFieldName = fieldNameToRedirect.get(fNode.name);
-                    if (newFieldName != null && blockSubclasses.contains(fNode.owner) && !blockSubclassExclusions.contains(fNode.owner)) {
+                    if (newFieldName != null && isBlockSubclass(fNode.owner) && !blockSubclassExclusions.contains(fNode.owner)) {
                         if (LOG_SPAM) {
                             LOGGER.info("Redirecting Block.{} in {} to thread-safe wrapper", fNode.name, transformedName);
                         }

src/main/java/com/gtnewhorizons/angelica/mixins/Mixins.java

@@ -47,9 +47,7 @@ public enum Mixins implements IMixins {
             , "angelica.bugfixes.MixinRenderGlobal_DestroyBlock"
             , "angelica.bugfixes.MixinRenderMooshroom_MushroomTint"
             , "angelica.bugfixes.MixinRendererLivingEntity_DeferredEntityOverlay"
-            , "angelica.bugfixes.MixinRendererLivingEntity_OverlayTint"
             , "angelica.bugfixes.MixinRenderWither_ArmorCentering"
-            , "angelica.bugfixes.MixinRendererLivingEntity_EyeDepth"
             , "angelica.debug.MixinMinecraft_FPSCap"
             , "angelica.ffp.MixinTessellator_CoreProfile"
             , "angelica.glsm.MixinSplashProgressCaching"
@@ -60,6 +58,24 @@ public enum Mixins implements IMixins {
         )
     ),
 
+    ANGELICA_ENTITY_OVERLAYS(new MixinBuilder()
+        .setPhase(Phase.EARLY)
+        .setApplyIf(() -> AngelicaConfig.entityOverlayFixes)
+        .addExcludedMod(TargetedMod.CUSTOM_PLAYER_MODELS)
+        .addClientMixins(
+            "angelica.bugfixes.MixinRendererLivingEntity_EyeDepth"
+        )
+    ),
+
+    ANGELICA_DAMAGE_OVERLAY(new MixinBuilder()
+        .setPhase(Phase.EARLY)
+        .setApplyIf(() -> AngelicaConfig.entityModernDamageOverlay)
+        .addExcludedMod(TargetedMod.CUSTOM_PLAYER_MODELS)
+        .addClientMixins(
+            "angelica.bugfixes.MixinRendererLivingEntity_OverlayTint"
+        )
+    ),
+
     ANGELICA_VBO_CLOUDS(
         new MixinBuilder()
             .setApplyIf(() -> AngelicaConfig.enableVBOClouds)
@@ -117,7 +133,7 @@ public enum Mixins implements IMixins {
                     .setPhase(Phase.EARLY)
                     .addClientMixins("angelica.bugfixes.MixinRenderBlocks_CrackFix")
                     .addExcludedMod(TargetedMod.FALSETWEAKS)
-                    .setApplyIf(() -> AngelicaConfig.fixBlockCrack)),
+                    .setApplyIf(() -> AngelicaConfig.blockCrackFix)),
 
     ANGELICA_FIX_FLUID_RENDERER_CHECKING_BLOCK_AGAIN(
         new MixinBuilder("Fix RenderBlockFluid reading the block type from the world access multiple times")
@@ -329,6 +345,15 @@ public enum Mixins implements IMixins {
         )
     ),
 
+    IRIS_SHADERS_CHISEL_BEACON(new MixinBuilder("Iris Chisel Beacon Beam")
+        .setPhase(Phase.LATE)
+        .setApplyIf(() -> AngelicaConfig.enableIris)
+        .addRequiredMod(TargetedMod.CHISEL)
+        .addClientMixins(
+            "chisel.MixinRenderCarvableBeacon"
+        )
+    ),
+
     ANGELICA_TEXTURE(new MixinBuilder()
         .setPhase(Phase.EARLY)
         .setApplyIf(() -> AngelicaConfig.enableIris || AngelicaConfig.enableCeleritas)

src/main/java/com/gtnewhorizons/angelica/mixins/TargetedMod.java

@@ -10,6 +10,7 @@ public enum TargetedMod implements ITargetMod {
     ARCHAICFIX("org.embeddedt.archaicfix.ArchaicCore", "archaicfix"),
     BACKHAND("xonin.backhand.coremod.BackhandLoadingPlugin", "backhand"),
     CAMPFIRE_BACKPORT(null, "campfirebackport"),
+    CHISEL(null, "chisel"),
     COFHCORE( "cofh.asm.LoadingPlugin", "CoFHCore"),
     DYNAMIC_SURROUNDINGS_MIST("org.blockartistry.mod.DynSurround.mixinplugin.DynamicSurroundingsEarlyMixins", "dsurround"),
     DYNAMIC_SURROUNDINGS_ORIGINAL("org.blockartistry.mod.DynSurround.asm.TransformLoader", "dsurround"),
@@ -27,6 +28,7 @@ public enum TargetedMod implements ITargetMod {
     TINKERS_CONSTRUCT(null, "TConstruct"),
     TWILIGHT_FOREST(null, "TwilightForest"),
     BIOMES_O_PLENTY(null, "BiomesOPlenty"),
+    CUSTOM_PLAYER_MODELS("com.tom.cpmcore.CPMLoadingPlugin", "customplayermodels"),
     WITCHERY(null, "witchery");
 
     private final TargetModBuilder builder;

src/main/java/com/gtnewhorizons/angelica/mixins/interfaces/ITileEntityBoundingBoxCache.java

@@ -5,5 +5,5 @@ import net.minecraft.util.AxisAlignedBB;
 public interface ITileEntityBoundingBoxCache {
     AxisAlignedBB angelica$getCachedRenderBoundingBox();
 
-    boolean angelica$isInfiniteExtent();
+    byte angelica$boundsClass();
 }

src/main/java/com/gtnewhorizons/angelica/proxy/ClientProxy.java

@@ -9,6 +9,7 @@ import com.gtnewhorizons.angelica.common.BlockError;
 import com.gtnewhorizons.angelica.compat.ModStatus;
 import com.gtnewhorizons.angelica.compat.bettercrashes.BetterCrashesCompat;
 import com.gtnewhorizons.angelica.config.AngelicaConfig;
+import com.gtnewhorizons.angelica.rendering.TileEntityRenderBoundsRegistry;
 import com.gtnewhorizons.angelica.config.CompatConfig;
 import com.gtnewhorizons.angelica.config.ConfigMigrator;
 import com.gtnewhorizons.angelica.debug.F3Direction;
@@ -102,6 +103,7 @@ public final class ClientProxy extends CommonProxy {
     @Override
     public void preInit(FMLPreInitializationEvent event) {
         ModStatus.preInit();
+        for (String name : AngelicaConfig.dynamicBoundsTileEntities) TileEntityRenderBoundsRegistry.registerDynamicClass(name);
         super.preInit(event);
         FMLCommonHandler.instance().bus().register(this);
         MinecraftForge.EVENT_BUS.register(this);

src/main/java/com/gtnewhorizons/angelica/render/SelectionBoxRenderer.java

@@ -1,28 +1,45 @@
 package com.gtnewhorizons.angelica.render;
 
+import com.gtnewhorizon.gtnhlib.client.renderer.vao.IVertexArrayObject;
+import com.gtnewhorizon.gtnhlib.client.renderer.vao.VertexBufferType;
+import com.gtnewhorizon.gtnhlib.client.renderer.vertex.DefaultVertexFormat;
+import com.gtnewhorizons.angelica.config.AngelicaConfig;
 import com.gtnewhorizons.angelica.glsm.GLStateManager;
 import com.gtnewhorizons.angelica.glsm.states.Color4;
 import com.gtnewhorizons.angelica.client.rendering.GlUniformFloat2v;
+import net.irisshaders.iris.api.v0.IrisApi;
 import net.minecraft.util.AxisAlignedBB;
 import org.embeddedt.embeddium.impl.gl.shader.GlProgram;
 import org.embeddedt.embeddium.impl.gl.shader.GlShader;
 import org.embeddedt.embeddium.impl.gl.shader.ShaderConstants;
 import org.embeddedt.embeddium.impl.gl.shader.ShaderType;
 import org.embeddedt.embeddium.impl.gl.shader.uniform.GlUniformFloat;
-import org.embeddedt.embeddium.impl.gl.shader.uniform.GlUniformFloat3v;
 import org.embeddedt.embeddium.impl.gl.shader.uniform.GlUniformFloat4v;
 import org.embeddedt.embeddium.impl.gl.shader.uniform.GlUniformMatrix4f;
 import org.embeddedt.embeddium.impl.render.shader.ShaderLoader;
 import org.joml.Matrix4f;
+import org.lwjgl.BufferUtils;
 import org.lwjgl.opengl.GL11;
 
+import java.nio.ByteBuffer;
+
 public final class SelectionBoxRenderer {
 
     private static GlProgram<SelectionBoxUniforms> program;
-    private static int emptyVao;
+    private static IVertexArrayObject vao;
     private static final Matrix4f mvpMatrix = new Matrix4f();
     private static final float[] colorBuf = new float[4];
 
+    private static final int VERT_COUNT = 24;
+    private static final float[] UNIT_EDGES = {
+        0,0,0, 1,0,0,  1,0,0, 1,0,1,
+        1,0,1, 0,0,1,  0,0,1, 0,0,0,
+        0,1,0, 1,1,0,  1,1,0, 1,1,1,
+        1,1,1, 0,1,1,  0,1,1, 0,1,0,
+        0,0,0, 0,1,0,  1,0,0, 1,1,0,
+        1,0,1, 1,1,1,  0,0,1, 0,1,1
+    };
+
     private SelectionBoxRenderer() {}
 
     public static void init() {
@@ -40,8 +57,6 @@ public final class SelectionBoxRenderer {
 
         program = builder.link(ctx -> new SelectionBoxUniforms(
                 ctx.bindUniform("u_MVP", GlUniformMatrix4f::new),
-                ctx.bindUniform("u_Min", GlUniformFloat3v::new),
-                ctx.bindUniform("u_Max", GlUniformFloat3v::new),
                 ctx.bindUniform("u_Color", GlUniformFloat4v::new),
                 needsGS ? ctx.bindUniform("u_ViewportSize", GlUniformFloat2v::new) : null,
                 needsGS ? ctx.bindUniform("u_LineWidth", GlUniformFloat::new) : null));
@@ -50,20 +65,34 @@ public final class SelectionBoxRenderer {
         fs.destroy();
         if (gs != null) gs.destroy();
 
-        emptyVao = GLStateManager.glGenVertexArrays();
+        final ByteBuffer buf = BufferUtils.createByteBuffer(UNIT_EDGES.length * Float.BYTES);
+        buf.asFloatBuffer().put(UNIT_EDGES);
+        vao = VertexBufferType.IMMUTABLE.allocate(DefaultVertexFormat.POSITION, GL11.GL_LINES, buf, VERT_COUNT);
     }
 
     public static void draw(AxisAlignedBB aabb, int color) {
-        if (program == null) return;
+        if (program == null || vao == null) return;
 
+        final float minX = (float) aabb.minX, minY = (float) aabb.minY, minZ = (float) aabb.minZ;
+        final float extX = (float) (aabb.maxX - aabb.minX);
+        final float extY = (float) (aabb.maxY - aabb.minY);
+        final float extZ = (float) (aabb.maxZ - aabb.minZ);
+
+        if (AngelicaConfig.enableIris && IrisApi.getInstance().isShaderPackInUse()) {
+            drawThroughShader(minX, minY, minZ, extX, extY, extZ, color);
+        } else {
+            drawFast(minX, minY, minZ, extX, extY, extZ, color);
+        }
+    }
+
+    private static void drawFast(float minX, float minY, float minZ, float extX, float extY, float extZ, int color) {
         final SelectionBoxUniforms uniforms = program.getInterface();
 
         program.bind();
 
         GLStateManager.getProjectionMatrix().mul(GLStateManager.getModelViewMatrix(), mvpMatrix);
+        mvpMatrix.translate(minX, minY, minZ).scale(extX, extY, extZ);
         uniforms.mvp.set(mvpMatrix);
-        uniforms.min.set((float) aabb.minX, (float) aabb.minY, (float) aabb.minZ);
-        uniforms.max.set((float) aabb.maxX, (float) aabb.maxY, (float) aabb.maxZ);
 
         if (color != -1) {
             colorBuf[0] = ((color >> 16) & 0xFF) / 255.0f;
@@ -84,25 +113,42 @@ public final class SelectionBoxRenderer {
             uniforms.lineWidth.setFloat(GLStateManager.getLineState().getWidth());
         }
 
-        GLStateManager.glBindVertexArray(emptyVao);
-        GLStateManager.glDrawArrays(GL11.GL_LINES, 0, 24);
-        GLStateManager.glBindVertexArray(0);
+        vao.render();
 
         program.unbind();
     }
 
+    private static void drawThroughShader(float minX, float minY, float minZ, float extX, float extY, float extZ, int color) {
+        GLStateManager.glPushMatrix();
+        GLStateManager.glTranslatef(minX, minY, minZ);
+        GLStateManager.glScalef(extX, extY, extZ);
+
+        final Color4 prev = GLStateManager.getColor();
+        final boolean overrideColor = color != -1;
+        if (overrideColor) {
+            GLStateManager.glColor4f(((color >> 16) & 0xFF) / 255.0f, ((color >> 8) & 0xFF) / 255.0f, (color & 0xFF) / 255.0f, 1.0f);
+        }
+
+        vao.render();
+
+        if (overrideColor) {
+            GLStateManager.glColor4f(prev.getRed(), prev.getGreen(), prev.getBlue(), prev.getAlpha());
+        }
+        GLStateManager.glPopMatrix();
+    }
+
     public static void destroy() {
         if (program != null) {
             program.destroy();
             program = null;
         }
-        if (emptyVao != 0) {
-            GLStateManager.glDeleteVertexArrays(emptyVao);
-            emptyVao = 0;
+        if (vao != null) {
+            vao.delete();
+            vao = null;
         }
     }
 
-    private record SelectionBoxUniforms(GlUniformMatrix4f mvp, GlUniformFloat3v min, GlUniformFloat3v max, GlUniformFloat4v color, GlUniformFloat2v viewportSize, GlUniformFloat lineWidth) {
+    private record SelectionBoxUniforms(GlUniformMatrix4f mvp, GlUniformFloat4v color, GlUniformFloat2v viewportSize, GlUniformFloat lineWidth) {
 
     }
 }

src/main/java/com/gtnewhorizons/angelica/rendering/TileEntityRenderBoundsRegistry.java

@@ -4,48 +4,60 @@ import it.unimi.dsi.fastutil.objects.Reference2ByteOpenHashMap;
 import net.minecraft.tileentity.TileEntity;
 import net.minecraft.util.AxisAlignedBB;
 
+import java.util.Set;
+import java.util.concurrent.ConcurrentHashMap;
+
 /**
- * Registry for tracking which TileEntity classes always return INFINITE_EXTENT_AABB.
+ * Registry for tracking which TileEntity classes always return INFINITE_EXTENT_AABB or are known to change at runtime
  */
 public final class TileEntityRenderBoundsRegistry {
     private static final byte UNKNOWN = 0;
-    private static final byte FINITE = 1;
-    private static final byte INFINITE = 2;
+    public static final byte STATIC = 1;
+    public static final byte INFINITE = 2;
+    public static final byte DYNAMIC = 3;
 
     private static final Reference2ByteOpenHashMap<Class<? extends TileEntity>> classRegistry = new Reference2ByteOpenHashMap<>();
 
+    private static final Set<String> dynamicClassNames = ConcurrentHashMap.newKeySet();
+
     static {
         classRegistry.defaultReturnValue(UNKNOWN);
     }
 
     private TileEntityRenderBoundsRegistry() {}
 
+    public static void registerDynamicClass(String className) {
+        if (className != null && !className.isEmpty()) dynamicClassNames.add(className);
+    }
+
     public static boolean isInfiniteExtentsBox(AxisAlignedBB box) {
         return box == null || Double.isInfinite(box.minX) || Double.isInfinite(box.minY) || Double.isInfinite(box.minZ) || Double.isInfinite(box.maxX) || Double.isInfinite(box.maxY) || Double.isInfinite(box.maxZ);
     }
 
-    public static boolean isAlwaysInfiniteExtent(TileEntity te) {
+    public static byte classify(TileEntity te) {
         final Class<? extends TileEntity> clazz = te.getClass();
         synchronized (classRegistry) {
-            final byte result = classRegistry.getByte(clazz);
-            if (result != UNKNOWN) return result == INFINITE;
+            final byte cached = classRegistry.getByte(clazz);
+            if (cached != UNKNOWN) return cached;
         }
-        return probeAndCache(te, clazz);
-    }
 
-    private static boolean probeAndCache(TileEntity te, Class<? extends TileEntity> clazz) {
-        boolean isInfinite;
-        try {
-            final AxisAlignedBB aabb = te.getRenderBoundingBox();
-            isInfinite = isInfiniteExtentsBox(aabb);
-        } catch (Throwable t) {
-            isInfinite = true;
+        final byte result;
+        if (dynamicClassNames.contains(clazz.getName())) {
+            result = DYNAMIC;
+        } else {
+            boolean isInfinite;
+            try {
+                isInfinite = isInfiniteExtentsBox(te.getRenderBoundingBox());
+            } catch (Throwable t) {
+                isInfinite = true;
+            }
+            result = isInfinite ? INFINITE : STATIC;
         }
 
         synchronized (classRegistry) {
-            classRegistry.put(clazz, isInfinite ? INFINITE : FINITE);
+            classRegistry.put(clazz, result);
         }
-        return isInfinite;
+        return result;
     }
 
     public static void clear() {

src/main/java/com/gtnewhorizons/angelica/rendering/celeritas/AngelicaChunkBuildContext.java

@@ -14,6 +14,7 @@ import com.gtnewhorizons.angelica.rendering.celeritas.light.VanillaDiffuseProvid
 import com.gtnewhorizons.angelica.rendering.celeritas.world.WorldSlice;
 import lombok.Getter;
 import net.coderbot.iris.block_rendering.BlockRenderingSettings;
+import net.coderbot.iris.vertices.ExtendedDataHelper;
 import net.irisshaders.iris.api.v0.IrisApi;
 import net.minecraft.client.Minecraft;
 import net.minecraft.client.multiplayer.WorldClient;
@@ -184,6 +185,8 @@ public class AngelicaChunkBuildContext extends ChunkBuildContext {
                 animatedSprites.add(sprite);
             }
 
+            final boolean isFluid = blockRenderContext.renderType == ExtendedDataHelper.FLUID_RENDER_TYPE;
+
             // If block used vanilla AO, then we can safely compute our own lighting data and ignore what vanilla
             // computed. We suppress vanilla emitting the brightness/color in MixinRenderBlocks.
             // Otherwise, we need to use the block's lightmap values as they are as the ISBRH may have
@@ -213,6 +216,17 @@ public class AngelicaChunkBuildContext extends ChunkBuildContext {
                 for (int vIdx = 0; vIdx < 4; vIdx++) {
                     vertices[vIdx].trueNormal = trueNormal;
                 }
+
+                if (useAoCalculation && isFluid) {
+                    quadView.setup(trueNormal, blockX, blockY, blockZ);
+                    final ModelQuadFacing lightFace = quadView.getLightFace();
+                    final LightPipeline pipeline = blockAllowsSmoothLighting ? smoothLightPipeline : flatLightPipeline;
+                    final ModelQuadFacing cullFace = quadView.getCullFace();
+                    pipeline.calculate(quadView, worldX, worldY, worldZ, quadLightData, cullFace, lightFace, shouldApplyDiffuse, true);
+                    for (int vIdx = 0; vIdx < 4; vIdx++) {
+                        vertices[vIdx].light = quadLightData.lm[vIdx];
+                    }
+                }
             }
 
             // Apply dynamic lights after AO calculation so they're not overwritten

src/main/java/com/gtnewhorizons/angelica/rendering/celeritas/AngelicaChunkBuilderMeshingTask.java

@@ -15,6 +15,7 @@ import net.coderbot.iris.block_rendering.BlockRenderingSettings;
 import net.coderbot.iris.block_rendering.NbtConditionalIdMap;
 import net.coderbot.iris.vertices.ExtendedDataHelper;
 import net.minecraft.block.Block;
+import net.minecraft.block.BlockDoublePlant;
 import net.minecraft.nbt.NBTTagCompound;
 import net.minecraft.client.Minecraft;
 import net.minecraft.client.renderer.RenderBlocks;
@@ -150,7 +151,8 @@ public abstract class AngelicaChunkBuilderMeshingTask extends ChunkBuilderTask<C
                             final TileEntity tileEntity = region.getTileEntity(x, y, z);
                             if (tileEntity != null && TileEntityRendererDispatcher.instance.hasSpecialRenderer(tileEntity)) {
                                 final boolean isGlobal;
-                                if (TileEntityRenderBoundsRegistry.isAlwaysInfiniteExtent(tileEntity)) {
+                                final byte boundsClass = TileEntityRenderBoundsRegistry.classify(tileEntity);
+                                if (boundsClass == TileEntityRenderBoundsRegistry.INFINITE || boundsClass == TileEntityRenderBoundsRegistry.DYNAMIC) {
                                     isGlobal = true;
                                 } else {
                                     AxisAlignedBB aabb;
@@ -268,13 +270,15 @@ public abstract class AngelicaChunkBuilderMeshingTask extends ChunkBuilderTask<C
         if (contextEncoder != null) {
             final byte lightValue = (byte) block.getLightValue();
             if (isFluid) {
-                contextEncoder.prepareToRenderFluid(blockRenderContext, block, lightValue);
+                contextEncoder.prepareToRenderFluid(blockRenderContext, block, metadata, lightValue);
             } else {
                 int effectiveMeta = metadata;
                 if (BlockRenderingSettings.INSTANCE.hasSnowyEntries()
                     && BlockRenderingSettings.INSTANCE.getSnowyBlocks().contains(block)
                     && RenderBlocksUtils.isSnowCovered(renderBlocks.blockAccess, x, y, z)) {
                     effectiveMeta |= BlockMaterialMapping.SNOWY_META_BIT;
+                } else if (block instanceof BlockDoublePlant doublePlant && BlockDoublePlant.func_149887_c(metadata)) {
+                    effectiveMeta = 0x8 | (doublePlant.func_149885_e(renderBlocks.blockAccess, x, y, z) & 7);
                 }
                 contextEncoder.prepareToRenderBlock(blockRenderContext, block, effectiveMeta,
                     ExtendedDataHelper.BLOCK_RENDER_TYPE, lightValue);

src/main/java/com/gtnewhorizons/angelica/rendering/celeritas/AngelicaRenderPassConfiguration.java

@@ -21,6 +21,8 @@ public class AngelicaRenderPassConfiguration {
     private record AngelicaPipelineState(int pass, boolean disableAlphaTest) implements TerrainRenderPass.PipelineState {
         @Override
         public void setup() {
+            GLStateManager.glDepthMask(true);
+
             if (pass == 0) {
                 GLStateManager.glAlphaFunc(GL11.GL_GREATER, 0.1F);
             }

src/main/java/com/gtnewhorizons/angelica/rendering/celeritas/CeleritasWorldRenderer.java

@@ -346,8 +346,9 @@ public class CeleritasWorldRenderer extends SimpleWorldRenderer<WorldClient, Ang
 
         final ITileEntityBoundingBoxCache teCache = (ITileEntityBoundingBoxCache) tileEntity;
 
-        if (!teCache.angelica$isInfiniteExtent()) {
-            final AxisAlignedBB aabb = teCache.angelica$getCachedRenderBoundingBox();
+        final byte boundsClass = teCache.angelica$boundsClass();
+        if (boundsClass != TileEntityRenderBoundsRegistry.INFINITE) {
+            final AxisAlignedBB aabb = boundsClass == TileEntityRenderBoundsRegistry.DYNAMIC ? tileEntity.getRenderBoundingBox() : teCache.angelica$getCachedRenderBoundingBox();
             if (aabb != null && !this.currentViewport.isBoxVisible(aabb.minX, aabb.minY, aabb.minZ, aabb.maxX, aabb.maxY, aabb.maxZ)) {
                 return;
             }

src/main/java/com/gtnewhorizons/angelica/rendering/celeritas/iris/ContextAwareChunkVertexEncoder.java

@@ -7,7 +7,7 @@ public interface ContextAwareChunkVertexEncoder extends ChunkVertexEncoder {
 
     void prepareToRenderBlock(BlockRenderContext ctx, Block block, int metadata, short renderType, byte lightValue);
 
-    void prepareToRenderFluid(BlockRenderContext ctx, Block block, byte lightValue);
+    void prepareToRenderFluid(BlockRenderContext ctx, Block block, int metadata, byte lightValue);
 
     void finishRenderingBlock();
 }

src/main/java/com/gtnewhorizons/angelica/rendering/celeritas/iris/IrisExtendedChunkVertexEncoder.java

@@ -7,11 +7,14 @@ import static com.gtnewhorizons.angelica.rendering.celeritas.iris.IrisExtendedCh
 import it.unimi.dsi.fastutil.ints.Int2IntMap;
 import it.unimi.dsi.fastutil.objects.Reference2ObjectMap;
 import lombok.Setter;
+import net.coderbot.iris.block_rendering.BlockMaterialMapping;
 import net.coderbot.iris.block_rendering.BlockRenderingSettings;
 import net.coderbot.iris.vertices.ExtendedDataHelper;
 import net.coderbot.iris.vertices.NormalHelper;
 import net.coderbot.iris.vertices.NormI8;
 import net.minecraft.block.Block;
+import net.minecraft.block.BlockDynamicLiquid;
+import net.minecraft.block.BlockStaticLiquid;
 import org.embeddedt.embeddium.impl.render.chunk.terrain.material.Material;
 import org.embeddedt.embeddium.impl.render.chunk.vertex.format.ChunkVertexEncoder;
 import org.joml.Vector3f;
@@ -53,20 +56,44 @@ public class IrisExtendedChunkVertexEncoder implements ContextAwareChunkVertexEn
     public void prepareToRenderBlock(BlockRenderContext ctx, Block block, int metadata, short renderType, byte lightValue) {
         this.context = ctx;
         Int2IntMap metaMap = blockMetaMatches != null ? blockMetaMatches.get(block) : null;
-        ctx.blockId = (short) (metaMap != null ? metaMap.get(metadata) : -1);
+        ctx.blockId = (short) (metaMap != null ? BlockMaterialMapping.resolveId(metaMap, metadata) : -1);
         ctx.renderType = renderType;
         ctx.lightValue = lightValue;
     }
 
     @Override
-    public void prepareToRenderFluid(BlockRenderContext ctx, Block block, byte lightValue) {
+    public void prepareToRenderFluid(BlockRenderContext ctx, Block block, int metadata, byte lightValue) {
         this.context = ctx;
-        Int2IntMap metaMap = blockMetaMatches != null ? blockMetaMatches.get(block) : null;
-        ctx.blockId = (short) (metaMap != null ? metaMap.get(0) : -1);
+        ctx.blockId = (short) resolveFluidBlockId(block, metadata);
         ctx.renderType = ExtendedDataHelper.FLUID_RENDER_TYPE;
         ctx.lightValue = lightValue;
     }
 
+    /**
+     * Try and prevent material flickering
+     */
+    private int resolveFluidBlockId(Block block, int metadata) {
+        if (blockMetaMatches == null) return -1;
+
+        int id = lookupFluidMeta(block, metadata);
+        if (id == -1) {
+            final Block counterpart = liquidCounterpart(block);
+            if (counterpart != null) id = lookupFluidMeta(counterpart, metadata);
+        }
+        return id;
+    }
+
+    private int lookupFluidMeta(Block block, int metadata) {
+        final Int2IntMap metaMap = blockMetaMatches.get(block);
+        return metaMap != null ? BlockMaterialMapping.resolveId(metaMap, metadata) : -1;
+    }
+
+    private static Block liquidCounterpart(Block block) {
+        if (block instanceof BlockStaticLiquid) return Block.getBlockById(Block.getIdFromBlock(block) - 1);
+        if (block instanceof BlockDynamicLiquid) return Block.getBlockById(Block.getIdFromBlock(block) + 1);
+        return null;
+    }
+
     @Override
     public void finishRenderingBlock() {
         if (context != null) {

src/main/java/com/gtnewhorizons/angelica/zoom/Zoom.java

@@ -4,6 +4,8 @@ import cpw.mods.fml.client.registry.ClientRegistry;
 import cpw.mods.fml.common.FMLCommonHandler;
 import cpw.mods.fml.common.eventhandler.SubscribeEvent;
 import cpw.mods.fml.common.gameevent.InputEvent;
+import cpw.mods.fml.common.gameevent.TickEvent;
+import jss.notfine.core.Settings;
 import lombok.Getter;
 import net.minecraft.client.Minecraft;
 import net.minecraft.client.settings.KeyBinding;
@@ -19,6 +21,13 @@ public class Zoom {
 
     @Getter
     private static float zoom = ZOOM_DEFAULT;
+
+    public static final float ZOOM_SMOOTH_SNAP_EPSILON = 0.001F;
+
+    @Getter
+    private static float currentZoom = 1.0F;
+    private static long zoomLerpLastNano = 0L;
+
     @Getter
     private static final KeyBinding zoomKey = new KeyBinding("Zoom", 0, "key.categories.misc");
 
@@ -38,6 +47,29 @@ public class Zoom {
         zoom = MathHelper.clamp_float((float) (zoom * Math.pow(ZOOM_STEP, Integer.signum(eventDWheel))), ZOOM_MIN, ZOOM_MAX);
     }
 
+    public static void updateZoomLerp() {
+        final long now = System.nanoTime();
+        float dt = zoomLerpLastNano == 0L ? 0.0F : (now - zoomLerpLastNano) / 1.0e9F;
+        zoomLerpLastNano = now;
+
+        final float target = zoomEnabled ? zoom : 1.0F;
+
+        if (dt <= 0.0F || !(boolean) Settings.ZOOM_SMOOTH.option.getStore()) {
+            currentZoom = target;
+            return;
+        }
+
+        // Clamp dt so a long frame (alt-tab, GC pause) does not snap the zoom.
+        dt = Math.min(dt, 0.1F);
+
+        final int rate = (int) Settings.ZOOM_SMOOTH_SPEED.option.getStore();
+        currentZoom += (target - currentZoom) * (1.0F - (float) Math.exp(-dt * rate));
+
+        if (Math.abs(target - currentZoom) < ZOOM_SMOOTH_SNAP_EPSILON) {
+            currentZoom = target;
+        }
+    }
+
     private static void resetMouseFilters(Minecraft mc) {
         if (mc.entityRenderer != null) {
             ((IMouseFilterExt) mc.entityRenderer.mouseFilterXAxis).angelica$reset();
@@ -79,4 +111,10 @@ public class Zoom {
             handleKeyEvent();
         }
     }
+
+    @SubscribeEvent
+    public void onRenderTick(TickEvent.RenderTickEvent e) {
+        if (e.phase != TickEvent.Phase.START) return;
+        updateZoomLerp();
+    }
 }

src/main/java/com/prupe/mcpatcher/ctm/BlockOrientation.java

@@ -20,11 +20,7 @@ final class BlockOrientation extends RenderBlockState {
     // 1 2 3
     // c: coordinate (x,y,z) 0-2
     private static final int[][][] NEIGHBOR_OFFSET = new int[][][] {
-        (
-            fixedBottomFaceUV
-                ? makeNeighborOffset(EAST_FACE, SOUTH_FACE, WEST_FACE, NORTH_FACE) // BOTTOM_FACE fixedBottomFaceUV
-                : makeNeighborOffset(WEST_FACE, SOUTH_FACE, EAST_FACE, NORTH_FACE) // BOTTOM_FACE not fixed
-        ),
+        makeNeighborOffset(EAST_FACE, SOUTH_FACE, WEST_FACE, NORTH_FACE), // BOTTOM_FACE
         makeNeighborOffset(WEST_FACE, SOUTH_FACE, EAST_FACE, NORTH_FACE), // TOP_FACE
         makeNeighborOffset(EAST_FACE, BOTTOM_FACE, WEST_FACE, TOP_FACE), // NORTH_FACE
         makeNeighborOffset(WEST_FACE, BOTTOM_FACE, EAST_FACE, TOP_FACE), // SOUTH_FACE
@@ -48,6 +44,7 @@ final class BlockOrientation extends RenderBlockState {
     private int textureFace;
     private int textureFaceOrig;
     private int rotateUV;
+    private boolean flipBottom;
 
     @Override
     public void clear() {
@@ -60,6 +57,7 @@ final class BlockOrientation extends RenderBlockState {
         offsetsComputed = false;
         haveOffsets = false;
         dx = dy = dz = 0;
+        flipBottom = !fixedBottomFaceUV;
     }
 
     @Override
@@ -104,7 +102,7 @@ final class BlockOrientation extends RenderBlockState {
 
     @Override
     public int[] getOffset(int blockFace, int relativeDirection) {
-        return NEIGHBOR_OFFSET[blockFace][rotateUV(relativeDirection)];
+        return NEIGHBOR_OFFSET[flipBottom && blockFace == 0 ? 1 : blockFace][rotateUV(relativeDirection)];
     }
 
     @Override
@@ -147,6 +145,11 @@ final class BlockOrientation extends RenderBlockState {
         return haveOffsets;
     }
 
+
+    public void setFlipBottom(){
+        flipBottom = true;
+    }
+
     @Override
     public boolean shouldConnectByBlock(Block neighbor, int neighborX, int neighborY, int neighborZ) {
         return block == neighbor
@@ -172,6 +175,7 @@ final class BlockOrientation extends RenderBlockState {
         copy.textureFace = textureFace;
         copy.textureFaceOrig = textureFaceOrig;
         copy.rotateUV = rotateUV;
+        copy.flipBottom = flipBottom;
 
         copy.blockAccess = blockAccess;
         copy.block = block;
@@ -204,6 +208,7 @@ final class BlockOrientation extends RenderBlockState {
         rotateUV = 0;
         textureFace = blockFaceToTextureFace(blockFace);
         metadataBits = (1 << metadata) | (1 << altMetadata);
+        flipBottom = !fixedBottomFaceUV;
     }
 
     void setBlockMetadata(Block block, int metadata, int face) {

src/main/java/com/prupe/mcpatcher/ctm/CTMTextureGenerator.java

@@ -0,0 +1,99 @@
+package com.prupe.mcpatcher.ctm;
+
+import com.prupe.mcpatcher.ctm.TileOverrideImpl.CTMCompactExpanded;
+import com.prupe.mcpatcher.mal.tile.TileLoader;
+import net.minecraft.util.ResourceLocation;
+
+import java.awt.Graphics2D;
+import java.awt.image.BufferedImage;
+
+public class CTMTextureGenerator {
+
+    public static void generateTextures(BufferedImage[] compactIcons, CTMCompactExpanded override,
+                                        ResourceLocation propsLoc, ResourceLocation blankResource){
+        BufferedImage cFull = compactIcons[0]; // Full
+        BufferedImage cNone = compactIcons[1]; // None
+        BufferedImage cVert = compactIcons[2]; // Vertical
+        BufferedImage cHori = compactIcons[3]; // Horizontal
+        BufferedImage cCorn = compactIcons[4]; // Corner
+
+        BufferedImage[] expanded = new BufferedImage[47];
+
+        // Generate all 47 textures to match normal CTM
+        expanded[0]  = cFull;
+        expanded[1]  = generate(cFull, cHori, cFull, cHori);
+        expanded[2]  = cHori;
+        expanded[3]  = generate(cHori, cFull, cHori, cFull);
+        expanded[4]  = generate(cFull, cHori, cVert, cCorn);
+        expanded[5]  = generate(cHori, cFull, cCorn, cVert);
+        expanded[6]  = generate(cVert, cCorn, cVert, cCorn);
+        expanded[7]  = generate(cHori, cHori, cCorn, cCorn);
+        expanded[8]  = generate(cCorn, cNone, cCorn, cCorn);
+        expanded[9]  = generate(cCorn, cCorn, cCorn, cNone);
+        expanded[10] = generate(cNone, cCorn, cNone, cCorn);
+        expanded[11] = generate(cNone, cNone, cCorn, cCorn);
+        expanded[12] = generate(cFull, cFull, cVert, cVert);
+        expanded[13] = generate(cFull, cHori, cVert, cNone);
+        expanded[14] = generate(cHori, cHori, cNone, cNone);
+        expanded[15] = generate(cHori, cFull, cNone, cVert);
+        expanded[16] = generate(cVert, cCorn, cFull, cHori);
+        expanded[17] = generate(cCorn, cVert, cHori, cFull);
+        expanded[18] = generate(cCorn, cCorn, cHori, cHori);
+        expanded[19] = generate(cCorn, cVert, cCorn, cVert);
+        expanded[20] = generate(cNone, cCorn, cCorn, cCorn);
+        expanded[21] = generate(cCorn, cCorn, cNone, cCorn);
+        expanded[22] = generate(cCorn, cCorn, cNone, cNone);
+        expanded[23] = generate(cCorn, cNone, cCorn, cNone);
+        expanded[24] = cVert;
+        expanded[25] = generate(cVert, cNone, cVert, cNone);
+        expanded[26] = cNone;
+        expanded[27] = generate(cNone, cVert, cNone, cVert);
+        expanded[28] = generate(cVert, cCorn, cVert, cNone);
+        expanded[29] = generate(cHori, cHori, cNone, cCorn);
+        expanded[30] = generate(cVert, cNone, cVert, cCorn);
+        expanded[31] = generate(cHori, cHori, cCorn, cNone);
+        expanded[32] = generate(cNone, cNone, cNone, cCorn);
+        expanded[33] = generate(cNone, cNone, cCorn, cNone);
+        expanded[34] = generate(cCorn, cNone, cNone, cCorn);
+        expanded[35] = generate(cNone, cCorn, cCorn, cNone);
+        expanded[36] = generate(cVert, cVert, cFull, cFull);
+        expanded[37] = generate(cVert, cNone, cFull, cHori);
+        expanded[38] = generate(cNone, cNone, cHori, cHori);
+        expanded[39] = generate(cNone, cVert, cHori, cFull);
+        expanded[40] = generate(cCorn, cNone, cHori, cHori);
+        expanded[41] = generate(cNone, cVert, cNone, cVert);
+        expanded[42] = generate(cNone, cCorn, cHori, cHori);
+        expanded[43] = generate(cCorn, cVert, cNone, cVert);
+        expanded[44] = generate(cNone, cCorn, cNone, cNone);
+        expanded[45] = generate(cCorn, cNone, cNone, cNone);
+        expanded[46] = cCorn;
+
+        for (int i = 0; i < expanded.length; i++){
+            ResourceLocation resource =
+                TileLoader.parseTileAddress(propsLoc, String.valueOf(i), blankResource);
+            override.addIcon(resource, expanded[i]);
+        }
+    }
+
+    private static BufferedImage generate(BufferedImage tl, BufferedImage tr, BufferedImage bl, BufferedImage br){
+        int w = tl.getWidth();
+        int hw = w/2;
+        BufferedImage img = new BufferedImage(tl.getWidth(), tl.getHeight(), BufferedImage.TYPE_INT_ARGB);
+        int numFrames = tl.getHeight() / tl.getWidth();
+        Graphics2D g = img.createGraphics();
+        for (int i = 0; i < numFrames; i++){
+            int yOff = w * i;
+            copy(tl, g, 0, yOff, hw);
+            copy(tr, g, hw, yOff, hw);
+            copy(bl, g, 0, yOff + hw, hw);
+            copy(br, g, hw, yOff + hw, hw);
+        }
+        g.dispose();
+        return img;
+    }
+
+    private static void copy(BufferedImage src, Graphics2D g, int x, int y, int s){
+        g.drawImage(src, x, y, x+s, y+s, x, y, x+s, y+s, null);
+    }
+
+}

src/main/java/com/prupe/mcpatcher/ctm/CTMUtils.java

@@ -10,12 +10,12 @@ import java.util.Set;
 import java.util.concurrent.atomic.AtomicInteger;
 import java.util.concurrent.locks.StampedLock;
 
+import com.github.bsideup.jabel.Desugar;
 import net.minecraft.block.Block;
 import net.minecraft.util.IIcon;
 import net.minecraft.util.ResourceLocation;
 import net.minecraft.world.IBlockAccess;
 
-import com.github.bsideup.jabel.Desugar;
 import com.prupe.mcpatcher.MCLogger;
 import com.prupe.mcpatcher.MCPatcherUtils;
 import com.prupe.mcpatcher.mal.block.BlockAPI;
@@ -32,7 +32,7 @@ import jss.notfine.config.MCPatcherForgeConfig;
 
 public class CTMUtils {
 
-    private static final MCLogger logger = MCLogger.getLogger(MCLogger.Category.CONNECTED_TEXTURES, "CTM");
+    public static final MCLogger logger = MCLogger.getLogger(MCLogger.Category.CONNECTED_TEXTURES, "CTM");
 
     private static class Overrides {
         private final List<TileOverride> all = new ArrayList<>();

src/main/java/com/prupe/mcpatcher/ctm/CompactCtmQuadProcessor.java

@@ -53,6 +53,9 @@ public final class CompactCtmQuadProcessor {
     }
 
     public boolean processFace(RenderBlocks rb, RenderBlockState renderBlockState, IIcon origIcon) {
+        if(renderBlockState instanceof BlockOrientation blockOrientation){
+            blockOrientation.setFlipBottom();
+        }
         int neighborBits = override.getNeighborBits(renderBlockState, origIcon);
 
         int ctmIndex = TileOverride.neighborMap[neighborBits & 0xFF];

src/main/java/com/prupe/mcpatcher/ctm/GeneratedCTMAtlasSprite.java

@@ -0,0 +1,77 @@
+package com.prupe.mcpatcher.ctm;
+
+import com.gtnewhorizons.angelica.config.AngelicaConfig;
+import com.prupe.mcpatcher.mal.tile.TileLoader;
+import cpw.mods.fml.relauncher.Side;
+import cpw.mods.fml.relauncher.SideOnly;
+import jss.notfine.render.InterpolatedIcon;
+import net.minecraft.client.resources.IResource;
+import net.minecraft.client.resources.IResourceManager;
+import net.minecraft.client.resources.SimpleResource;
+import net.minecraft.client.resources.data.AnimationMetadataSection;
+import net.minecraft.util.ResourceLocation;
+
+import java.awt.image.BufferedImage;
+
+@SideOnly(Side.CLIENT)
+public class GeneratedCTMAtlasSprite extends InterpolatedIcon {
+
+    private final TileLoader loader;
+    private final boolean aniFiltering;
+    private boolean interpolated;
+
+    public GeneratedCTMAtlasSprite(TileLoader loader, boolean aniFiltering, String name) {
+        super(name);
+        this.loader = loader;
+        this.aniFiltering = aniFiltering;
+    }
+
+    @Override
+    protected void updateAnimationInterpolated() throws IllegalArgumentException, IllegalAccessException {
+        if(interpolated) super.updateAnimationInterpolated();
+    }
+
+    @Override
+    public boolean hasCustomLoader(IResourceManager manager, ResourceLocation location) {
+        return true;
+    }
+
+    @Override
+    public boolean load(IResourceManager manager, ResourceLocation location) {
+        BufferedImage img = loader.getImageForPath(location);
+        if(img == null) return true;
+        try {
+            ResourceLocation metaLoc = getMetaLoc(location);
+            IResource iresource = manager.getResource(metaLoc);
+            AnimationMetadataSection anim = (AnimationMetadataSection)iresource.getMetadata("animation");
+            interpolated = anim != null && AngelicaConfig.enableNotFineFeatures && shouldInterpolate(iresource);
+            loadSprite(new BufferedImage[]{img, null, null, null, null}, anim, aniFiltering);
+        }catch (Exception exception){
+            CTMUtils.logger.error("Error loading sprite for " + location);
+            exception.printStackTrace();
+            return true;
+        }
+        return false;
+    }
+
+    private static boolean shouldInterpolate(IResource resource){
+        try {
+            if (resource instanceof SimpleResource simple) {
+                return simple.mcmetaJson.getAsJsonObject("animation")
+                    .getAsJsonPrimitive("interpolate").getAsBoolean();
+            }
+        }catch (Exception _){}
+        return false;
+    }
+
+    /**
+     * Find the mcmeta file associated with 0.png
+     */
+    private static ResourceLocation getMetaLoc(ResourceLocation location) {
+        String path = location.getResourcePath();
+        int index = path.lastIndexOf('/');
+        if(index == -1) return new ResourceLocation(location.getResourceDomain(), "0.png");
+        path = path.substring(0, index) + "/0.png";
+        return new ResourceLocation(location.getResourceDomain(), path);
+    }
+}

src/main/java/com/prupe/mcpatcher/ctm/TileOverride.java

@@ -5,6 +5,7 @@ import static com.prupe.mcpatcher.ctm.RenderBlockState.CONNECT_BY_MATERIAL;
 import static com.prupe.mcpatcher.ctm.RenderBlockState.CONNECT_BY_TILE;
 import static com.prupe.mcpatcher.ctm.RenderBlockState.NORMALS;
 
+import java.awt.image.BufferedImage;
 import java.util.ArrayList;
 import java.util.BitSet;
 import java.util.HashSet;
@@ -32,10 +33,10 @@ public abstract class TileOverride implements Comparable<TileOverride> {
 
     private static final MCLogger logger = MCLogger.getLogger(MCLogger.Category.CONNECTED_TEXTURES, "CTM");
 
-    private final PropertiesFile properties;
+    protected final PropertiesFile properties;
     private final String baseFilename;
-    private final TileLoader tileLoader;
-    private final int renderPass;
+    protected final TileLoader tileLoader;
+    protected final int renderPass;
     private final int weight;
     private final List<BlockStateMatcher> matchBlocks;
     private final Set<String> matchTiles;
@@ -45,7 +46,7 @@ public abstract class TileOverride implements Comparable<TileOverride> {
     private final BitSet biomes;
     private final BitSet height;
 
-    private final List<ResourceLocation> tileNames = new ArrayList<>();
+    protected final List<ResourceLocation> tileNames = new ArrayList<>();
     protected IIcon[] icons;
 
     // Index into this array is formed from these bit values:
@@ -103,6 +104,7 @@ public abstract class TileOverride implements Comparable<TileOverride> {
             case "sandstone", "top" -> override = new TileOverrideImpl.Top(properties, tileLoader);
             case "repeat", "pattern" -> override = new TileOverrideImpl.Repeat(properties, tileLoader);
             case "ctm_compact", "compact" -> override = new TileOverrideImpl.CTMCompact(properties, tileLoader);
+            case "compact_expanded" -> override = new TileOverrideImpl.CTMCompactExpanded(properties, tileLoader);
             default -> properties.error("unknown method \"%s\"", method);
         }
 
@@ -196,7 +198,12 @@ public abstract class TileOverride implements Comparable<TileOverride> {
         return tileLoader.preloadTile(resource, renderPass > RenderPassAPI.MAX_BASE_RENDER_PASS);
     }
 
-    private void loadIcons() {
+    public void addIcon(ResourceLocation resource, BufferedImage img){
+        tileNames.add(resource);
+        tileLoader.addTile(resource, img, null, true);
+    }
+
+    protected void loadIcons() {
         tileNames.clear();
         String tileList = properties.getString("tiles", "");
         ResourceLocation blankResource = RenderPassAPI.instance.getBlankResource(renderPass);
@@ -221,16 +228,7 @@ public abstract class TileOverride implements Comparable<TileOverride> {
                     try {
                         int from = Integer.parseInt(matcher.group(1));
                         int to = Integer.parseInt(matcher.group(2));
-                        for (int i = from; i <= to; i++) {
-                            ResourceLocation resource = TileLoader
-                                .parseTileAddress(properties.getResource(), String.valueOf(i), blankResource);
-                            if (TexturePackAPI.hasResource(resource)) {
-                                addIcon(resource);
-                            } else {
-                                properties.warning("could not find image %s", resource);
-                                tileNames.add(null);
-                            }
-                        }
+                        loadOverrideIcons(from, to, blankResource);
                     } catch (NumberFormatException e) {
                         e.printStackTrace();
                     }
@@ -250,6 +248,19 @@ public abstract class TileOverride implements Comparable<TileOverride> {
         }
     }
 
+    protected void loadOverrideIcons(int from, int to, ResourceLocation blankResource){
+        for (int i = from; i <= to; i++) {
+            ResourceLocation resource = TileLoader
+                .parseTileAddress(properties.getResource(), String.valueOf(i), blankResource);
+            if (TexturePackAPI.hasResource(resource)) {
+                addIcon(resource);
+            } else {
+                properties.warning("could not find image %s", resource);
+                tileNames.add(null);
+            }
+        }
+    }
+
     private List<BlockStateMatcher> getBlockList(String property, String defaultMetadata) {
         List<BlockStateMatcher> blocks = new ArrayList<>();
         if (!MCPatcherUtils.isNullOrEmpty(defaultMetadata)) {
@@ -289,9 +300,6 @@ public abstract class TileOverride implements Comparable<TileOverride> {
             if (token.isEmpty()) {
                 // nothing
             } else if (token.contains("/")) {
-                if (!token.endsWith(".png")) {
-                    token += ".png";
-                }
                 ResourceLocation resource = TexturePackAPI.parseResourceLocation(properties.getResource(), token);
                 if (resource != null) {
                     list.add(resource.toString());

src/main/java/com/prupe/mcpatcher/ctm/TileOverrideImpl.java

@@ -12,15 +12,22 @@ import static com.prupe.mcpatcher.ctm.RenderBlockState.REL_UL;
 import static com.prupe.mcpatcher.ctm.RenderBlockState.REL_UR;
 import static com.prupe.mcpatcher.ctm.RenderBlockState.TOP_FACE;
 
+import com.prupe.mcpatcher.mal.block.RenderPassAPI;
+import com.prupe.mcpatcher.mal.resource.TexturePackAPI;
 import net.minecraft.util.IIcon;
 
 import com.prupe.mcpatcher.mal.resource.PropertiesFile;
 import com.prupe.mcpatcher.mal.tile.TileLoader;
 import com.prupe.mcpatcher.mal.util.WeightedIndex;
+import net.minecraft.util.ResourceLocation;
+
+import java.awt.image.BufferedImage;
+import java.util.ArrayList;
+import java.util.List;
 
 public class TileOverrideImpl {
 
-    final static class CTM extends TileOverride {
+    static class CTM extends TileOverride {
 
         CTM(PropertiesFile properties, TileLoader tileLoader) {
             super(properties, tileLoader);
@@ -505,4 +512,48 @@ public class TileOverrideImpl {
             return p;
         }
     }
+
+    final public static class CTMCompactExpanded extends CTM {
+
+        CTMCompactExpanded(PropertiesFile propertiesFile, TileLoader tileLoader) {
+            super(propertiesFile, tileLoader);
+        }
+
+        @Override
+        String checkTileMap() {
+            return null;
+        }
+
+        @Override
+        String getMethod() {
+            return "compact_expanded";
+        }
+
+        @Override
+        protected void loadOverrideIcons(int from, int to, ResourceLocation blankResource) {
+            List<BufferedImage> compactIcons = new ArrayList<>();
+            if(from != 0){
+                properties.error("expanded compact CTM requires range to start at 0, starts at %d", from);
+            }
+            if(to - from + 1 != 5){
+                properties.error("expanded compact CTM requires exactly 5 icons, got range %d - %d", from, to);
+            }
+            for (int i = from; i <= to; i++) {
+                ResourceLocation resource = TileLoader
+                    .parseTileAddress(properties.getResource(), String.valueOf(i), blankResource);
+                if (TexturePackAPI.hasResource(resource)) {
+                    compactIcons.add(tileLoader.loadResourceImage(resource,
+                        renderPass > RenderPassAPI.MAX_BASE_RENDER_PASS));
+                } else {
+                    // Promote from warning to error for compact CTM
+                    properties.error("could not find image %s, required for expanded compact CTM", resource);
+                    tileNames.add(null);
+                }
+            }
+            if(compactIcons.size() == 5){
+                CTMTextureGenerator.generateTextures(compactIcons.toArray(new BufferedImage[0]),
+                    this, properties.getResource(), blankResource);
+            }
+        }
+    }
 }

src/main/java/com/prupe/mcpatcher/mal/tile/TileLoader.java

@@ -11,6 +11,7 @@ import java.util.List;
 import java.util.Map;
 import java.util.Set;
 
+import com.prupe.mcpatcher.ctm.GeneratedCTMAtlasSprite;
 import net.minecraft.client.Minecraft;
 import net.minecraft.client.renderer.texture.TextureAtlasSprite;
 import net.minecraft.client.renderer.texture.TextureMap;
@@ -44,6 +45,7 @@ public class TileLoader {
     private TextureMap baseTextureMap;
     private final Map<String, TextureAtlasSprite> baseTexturesByName = new HashMap<>();
     private final Set<ResourceLocation> tilesToRegister = new HashSet<>();
+    private final Set<ResourceLocation> generatedTiles = new HashSet<>();
     private final Map<ResourceLocation, BufferedImage> tileImages = new HashMap<>();
     private final Map<String, IIcon> iconMap = new HashMap<>();
 
@@ -119,6 +121,10 @@ public class TileLoader {
         logger.fine("after registerIcons(%s) %d icons", mapName, map.size());
     }
 
+    public BufferedImage getImageForPath(ResourceLocation rl) {
+        return tileImages.get(rl);
+    }
+
     public static String getOverridePath(String prefix, String basePath, String name, String ext) {
         String path;
         if (name.endsWith(".png")) {
@@ -218,6 +224,22 @@ public class TileLoader {
         if (tileImages.containsKey(resource)) {
             return true;
         }
+        return addTile(resource, loadResourceImage(resource, alternate), special, false);
+    }
+
+    public boolean addTile(ResourceLocation resource, BufferedImage image, String special, boolean generated) {
+        tilesToRegister.add(resource);
+        tileImages.put(resource, image);
+        if(generated){
+            generatedTiles.add(resource);
+        }
+        if (special != null) {
+            specialTextures.put(resource.toString(), special);
+        }
+        return true;
+    }
+
+    public BufferedImage loadResourceImage(ResourceLocation resource, boolean alternate){
         BufferedImage image = null;
         if (!MCPatcherForgeConfig.ConnectedTextures.debugTextures) {
             image = TexturePackAPI.getImage(resource);
@@ -228,12 +250,7 @@ public class TileLoader {
         if (image == null) {
             image = generateDebugTexture(resource.getResourcePath(), 64, 64, alternate);
         }
-        tilesToRegister.add(resource);
-        tileImages.put(resource, image);
-        if (special != null) {
-            specialTextures.put(resource.toString(), special);
-        }
-        return true;
+        return image;
     }
 
     public boolean preloadTile(ResourceLocation resource, boolean alternate) {
@@ -287,8 +304,14 @@ public class TileLoader {
                 return false;
             }
         }
-        IIcon icon = textureMap.registerIcon(name);
-        map.put(name, (TextureAtlasSprite) icon);
+        TextureAtlasSprite icon;
+        if(generatedTiles.contains(resource)){
+            icon = new GeneratedCTMAtlasSprite(this, textureMap.anisotropicFiltering > 1, name);
+            textureMap.setTextureEntry(name, icon);
+        }else{
+            icon = (TextureAtlasSprite)textureMap.registerIcon(name);
+        }
+        map.put(name, icon);
         iconMap.put(name, icon);
         String extra = (width == height ? "" : ", " + (height / width) + " frames");
         subLogger.finer("%s -> %s icon %dx%d%s", name, mapName, width, width, extra);
@@ -299,6 +322,7 @@ public class TileLoader {
     public void finish() {
         tilesToRegister.clear();
         tileImages.clear();
+        generatedTiles.clear();
     }
 
     public IIcon getIcon(String name) {

src/main/java/jss/notfine/core/Settings.java

@@ -174,7 +174,9 @@ public enum Settings {
             RenderStars.reloadStarRenderList(Minecraft.getMinecraft().renderGlobal);
         }
     },
-    VOID_FOG(new NotFineOptionTickBox(false, OptionImpact.LOW));
+    VOID_FOG(new NotFineOptionTickBox(false, OptionImpact.LOW)),
+    ZOOM_SMOOTH(new NotFineOptionTickBox(true, OptionImpact.LOW)),
+    ZOOM_SMOOTH_SPEED(new NotFineOptionSlider(14, 1, 30, 1, OptionImpact.LOW));
 
     public final NotFineOption<?> option;
 

src/main/java/jss/notfine/gui/NotFineGameOptionPages.java

@@ -1,6 +1,7 @@
 package jss.notfine.gui;
 
 import com.google.common.collect.ImmutableList;
+import com.gtnewhorizons.angelica.config.AngelicaConfig;
 import com.gtnewhorizons.angelica.glsm.GLStateManager;
 import jss.notfine.config.NotFineConfig;
 import jss.notfine.core.Settings;
@@ -169,6 +170,12 @@ public class NotFineGameOptionPages {
                 .build());
         }
 
+        if (AngelicaConfig.enableZoom) {
+            groups.add(OptionGroup.createBuilder()
+                .add(Settings.ZOOM_SMOOTH.option)
+                .add(Settings.ZOOM_SMOOTH_SPEED.option)
+                .build());
+        }
 
         return new OptionPage(I18n.format("options.video"), ImmutableList.copyOf(groups));
     }

src/main/java/jss/notfine/render/InterpolatedIcon.java

@@ -29,7 +29,7 @@ public class InterpolatedIcon extends TextureAtlasSprite {
 		}
 	}
 
-	private void updateAnimationInterpolated() throws IllegalArgumentException, IllegalAccessException {
+	protected void updateAnimationInterpolated() throws IllegalArgumentException, IllegalAccessException {
 
 		double d0 = 1.0D - tickCounter / (double) animationMetadata.getFrameTimeSingle(frameCounter);
 		int i = animationMetadata.getFrameIndex(frameCounter);

src/main/java/me/jellysquid/mods/sodium/client/gui/SodiumGameOptionPages.java

@@ -532,6 +532,13 @@ public class SodiumGameOptionPages {
                         .build())
                 .build());
 
+        if (AngelicaConfig.enableZoom) {
+            groups.add(OptionGroup.createBuilder()
+                .add(Settings.ZOOM_SMOOTH.option)
+                .add(Settings.ZOOM_SMOOTH_SPEED.option)
+                .build());
+        }
+
         return new OptionPage(I18n.format("sodium.options.pages.appearance"), ImmutableList.copyOf(groups));
     }
 

src/main/java/net/coderbot/iris/Iris.java

@@ -13,6 +13,7 @@ import cpw.mods.fml.common.gameevent.InputEvent;
 import it.unimi.dsi.fastutil.ints.Int2IntMap;
 import it.unimi.dsi.fastutil.objects.Reference2ObjectMap;
 import lombok.Getter;
+import net.coderbot.iris.block_rendering.BlockMaterialMapping;
 import net.coderbot.iris.block_rendering.BlockRenderingSettings;
 import net.coderbot.iris.celeritas.IrisCeleritasShaderProvider;
 import net.coderbot.iris.compat.dh.DHCompat;
@@ -72,7 +73,6 @@ import java.util.concurrent.TimeUnit;
 import java.util.concurrent.atomic.AtomicInteger;
 import java.util.function.Supplier;
 import java.util.stream.Stream;
-import java.util.zip.ZipError;
 import java.util.zip.ZipException;
 
 public class Iris {
@@ -458,6 +458,33 @@ public class Iris {
         }
     }
 
+    /**
+     * Toggles shader debug mode. When enabled, patched shader sources are dumped to disk (see
+     * {@link net.coderbot.iris.pipeline.PatchedShaderPrinter}) and logging is more verbose.
+     */
+    public static void setDebug(boolean enable) {
+        try {
+            irisConfig.setDebugEnabled(enable);
+            irisConfig.save();
+            reload();
+        } catch (IOException e) {
+            logger.error("Failed to " + (enable ? "enable" : "disable") + " debug mode", e);
+        }
+        logger.info("Debug functionality is " + (enable ? "enabled, logging will be more verbose!" : "disabled."));
+    }
+
+    /**
+     * Toggles whether unrecognized shader packs may load, exposing the {@code ALLOWS_UNKNOWN_SHADERS} macro.
+     */
+    public static void setAllowUnknownShaders(boolean allow) {
+        try {
+            irisConfig.setUnknown(allow);
+            reload();
+        } catch (IOException e) {
+            logger.error("Failed to " + (allow ? "allow" : "disallow") + " unknown shaders", e);
+        }
+    }
+
     public static void loadShaderpack() {
         if (irisConfig == null) {
             if (!initialized) {
@@ -678,8 +705,7 @@ public class Iris {
                 try (Stream<Path> stream = Files.walk(root)) {
                     return stream.filter(Files::isDirectory).anyMatch(path -> path.endsWith("shaders"));
                 }
-            } catch (ZipError zipError) {
-                // Java 8 seems to throw a ZipError instead of a subclass of IOException
+            } catch (ZipException e) {
                 Iris.logger.warn("The ZIP at " + pack + " is corrupt");
             } catch (IOException ignored) {
                 // ignored, not a valid shader pack.
@@ -923,7 +949,7 @@ public class Iris {
             return;
 
         final Int2IntMap metaMap = blockMetaMatches.get(block);
-        final int blockId = metaMap != null ? metaMap.get(meta) : -1;
+        final int blockId = metaMap != null ? BlockMaterialMapping.resolveId(metaMap, meta) : -1;
 
         if (TessellatorManager.get() instanceof StateAwareTessellator tess)
             tess.angelica$setShaderOverrideBlockId((short) blockId);

src/main/java/net/coderbot/iris/block_rendering/BlockMaterialMapping.java

@@ -1,5 +1,6 @@
 package net.coderbot.iris.block_rendering;
 
+import com.gtnewhorizons.angelica.compat.ModStatus;
 import com.gtnewhorizons.angelica.rendering.celeritas.BlockRenderLayer;
 import it.unimi.dsi.fastutil.ints.Int2IntMap;
 import it.unimi.dsi.fastutil.ints.Int2IntOpenHashMap;
@@ -14,6 +15,7 @@ import net.coderbot.iris.shaderpack.materialmap.BlockRenderType;
 import net.coderbot.iris.shaderpack.materialmap.FlatteningMap;
 import net.coderbot.iris.shaderpack.materialmap.NamespacedId;
 import net.minecraft.block.Block;
+import net.minecraft.block.BlockDoublePlant;
 import net.minecraft.init.Blocks;
 import net.minecraft.util.ResourceLocation;
 
@@ -25,8 +27,12 @@ public class BlockMaterialMapping {
 
 	public record BlockIdMaps(Reference2ObjectMap<Block, Int2IntMap> blockMetaMap, NbtConditionalIdMap<Block> tileEntityMap) {}
 
-	/** Meta-key bit OR'd in at runtime when a snowy-tagged block has snow above it. */
-	public static final int SNOWY_META_BIT = 0x10;
+	// Meta-key bits OR'd in at runtime
+	public static final int SNOWY_META_BIT = 1 << 16;
+
+	public static final int DOUBLE_PLANT_TOP_BIT = 0x8;
+
+	public static final int WILDCARD_META_KEY = 1 << 30;
 
 	/**
 	 * Creates the standard block meta ID map, the TileEntity NBT-conditional map, and registers
@@ -129,6 +135,7 @@ public class BlockMaterialMapping {
 		final Map<String, String> stateProps = entry.stateProperties();
 		final String snowy = stateProps.get("snowy");
 		final int snowyBit = "true".equals(snowy) ? SNOWY_META_BIT : 0;
+		final boolean wantsDoublePlantTop = "upper".equals(stateProps.get("half"));
 
 		// Vanilla modern names go through FlatteningMap; legacy-section packs and modded blocks
 		// resolve directly from the registry.
@@ -145,12 +152,16 @@ public class BlockMaterialMapping {
 			}
 			final Block block = resolveBlockOrNull(target.id());
 			if (block == null) continue;
-			applyMetas(block, target.metas(), idMap, intId, snowyBit);
+			int extraBits = snowyBit;
+			if (wantsDoublePlantTop && block instanceof BlockDoublePlant) {
+				extraBits |= DOUBLE_PLANT_TOP_BIT;
+			}
+			applyMetas(block, target.metas(), idMap, intId, extraBits);
 			if (snowy != null) snowyBlocks.add(block);
 		}
 	}
 
-	private static void applyMetas(Block block, Set<Integer> metas, Reference2ObjectMap<Block, Int2IntMap> idMap, int intId, int snowyBit) {
+	private static void applyMetas(Block block, Set<Integer> metas, Reference2ObjectMap<Block, Int2IntMap> idMap, int intId, int extraBits) {
 		Int2IntMap metaMap = idMap.get(block);
 		if (metaMap == null) {
 			metaMap = new Int2IntOpenHashMap();
@@ -159,12 +170,18 @@ public class BlockMaterialMapping {
 		}
 
 		if (metas.isEmpty()) {
-			for (int meta = 0; meta < 16; meta++) metaMap.putIfAbsent(meta | snowyBit, intId);
+			for (int meta = 0; meta < 16; meta++) metaMap.putIfAbsent(meta | extraBits, intId);
+			if (ModStatus.isMetadataExtended) metaMap.putIfAbsent(WILDCARD_META_KEY | extraBits, intId);
 		} else {
-			for (int meta : metas) metaMap.putIfAbsent(meta | snowyBit, intId);
+			for (int meta : metas) metaMap.putIfAbsent(meta | extraBits, intId);
 		}
 	}
 
+	public static int resolveId(Int2IntMap metaMap, int metaKey) {
+		final int id = metaMap.get(metaKey);
+		return id != -1 ? id : metaMap.get(WILDCARD_META_KEY | (metaKey & SNOWY_META_BIT));
+	}
+
 	/**
 	 * Returns the registered Block for an id, or null if unknown.
 	 * The registry returns Blocks.air (its default) for missing keys, which we coerce to null.

src/main/java/net/coderbot/iris/compat/dh/DHCompatInternal.java

@@ -161,6 +161,7 @@ public class DHCompatInternal {
         if (((IRenderTargetExt) Minecraft.getMinecraft().getFramebuffer()).iris$getDepthBufferVersion() != cachedVersion) {
             cachedVersion = ((IRenderTargetExt) Minecraft.getMinecraft().getFramebuffer()).iris$getDepthBufferVersion();
             createDepthTex(Minecraft.getMinecraft().getFramebuffer().framebufferWidth, Minecraft.getMinecraft().getFramebuffer().framebufferHeight);
+            storedDepthTex = -1;
         }
         if (storedDepthTex != depthTex && dhTerrainFramebuffer != null) {
             storedDepthTex = depthTex;

src/main/java/net/coderbot/iris/compat/dh/IrisGenericRenderProgram.java

@@ -31,7 +31,6 @@ import net.coderbot.iris.uniforms.custom.CustomUniforms;
 import net.irisshaders.iris.api.v0.IrisApi;
 import net.minecraft.client.Minecraft;
 import net.minecraft.client.renderer.texture.DynamicTexture;
-import org.joml.Matrix3f;
 import org.joml.Matrix4f;
 import org.lwjgl.opengl.GL11;
 import org.lwjgl.opengl.GL13;
@@ -46,12 +45,6 @@ import java.util.Map;
 
 public class IrisGenericRenderProgram implements IDhApiGenericObjectShaderProgram {
     // Uniforms
-    public final int modelViewUniform;
-    public final int modelViewInverseUniform;
-    public final int projectionUniform;
-    public final int projectionInverseUniform;
-    public final int normalMatrix3fUniform;
-    // Fog/Clip Uniforms
     private final int id;
     private final ProgramUniforms uniforms;
     private final CustomUniforms customUniforms;
@@ -62,7 +55,6 @@ public class IrisGenericRenderProgram implements IDhApiGenericObjectShaderProgra
     private final Matrix4f tempModel = new Matrix4f();
     private final Matrix4f tempProj = new Matrix4f();
     private final Matrix4f tempMat4 = new Matrix4f();
-    private final Matrix3f tempMat3 = new Matrix3f();
 
     private final int instancedShaderOffsetChunkUniform;
     private final int instancedShaderOffsetSubChunkUniform;
@@ -143,12 +135,6 @@ public class IrisGenericRenderProgram implements IDhApiGenericObjectShaderProgra
         GLStateManager.glVertexAttribPointer(0, 3, GL11.GL_FLOAT, false, 0, 0);
         GLStateManager.glEnableVertexAttribArray(0);
 
-        projectionUniform = tryGetUniformLocation2("iris_ProjectionMatrix");
-        projectionInverseUniform = tryGetUniformLocation2("iris_ProjectionMatrixInverse");
-        modelViewUniform = tryGetUniformLocation2("iris_ModelViewMatrix");
-        modelViewInverseUniform = tryGetUniformLocation2("iris_ModelViewMatrixInverse");
-        normalMatrix3fUniform = tryGetUniformLocation2("iris_NormalMatrix");
-
         this.instancedShaderOffsetChunkUniform = this.tryGetUniformLocation2("uOffsetChunk");
         this.instancedShaderOffsetSubChunkUniform = this.tryGetUniformLocation2("uOffsetSubChunk");
         this.instancedShaderCameraChunkPosUniform = this.tryGetUniformLocation2("uCameraPosChunk");
@@ -213,18 +199,6 @@ public class IrisGenericRenderProgram implements IDhApiGenericObjectShaderProgra
         }
     }
 
-    public void setUniform(int index, Matrix3f matrix) {
-        if (index == -1) return;
-
-        try (MemoryStack stack = MemoryStack.stackPush()) {
-            FloatBuffer buffer = stack.callocFloat(9);
-            matrix.get(buffer);
-            buffer.rewind();
-
-            GLStateManager.glUniformMatrix3(index, false, buffer);
-        }
-    }
-
     // Override ShaderProgram.bind()
     public void bind(DhApiRenderParam renderParam) {
         GLStateManager.glBindVertexArray(va);
@@ -238,14 +212,8 @@ public class IrisGenericRenderProgram implements IDhApiGenericObjectShaderProgra
         toJOML(tempModel, renderParam.dhModelViewMatrix);
         toJOML(tempProj, renderParam.dhProjectionMatrix);
 
-        setUniform(modelViewUniform, tempModel);
-        setUniform(projectionUniform, tempProj);
         this.setUniform(this.instancedShaderProjectionModelViewMatrixUniform, tempMat4.set(tempProj).mul(tempModel));
-        tempModel.invert();
-        tempProj.invert();
-        setUniform(modelViewInverseUniform, tempModel);
-        setUniform(projectionInverseUniform, tempProj);
-        setUniform(normalMatrix3fUniform, tempModel.transpose3x3(tempMat3));
+        LodRendererEvents.pushDhMatrices(tempProj, tempModel);
         GLStateManager.glActiveTexture(GL13.GL_TEXTURE0 + IrisSamplers.LIGHTMAP_TEXTURE_UNIT);
         DynamicTexture lightmapTexture = ((EntityRendererAccessor) Minecraft.getMinecraft().entityRenderer).getLightmapTexture();
         GLStateManager.glBindTexture(GL11.GL_TEXTURE_2D, lightmapTexture.getGlTextureId());
@@ -259,6 +227,7 @@ public class IrisGenericRenderProgram implements IDhApiGenericObjectShaderProgra
     }
 
     public void unbind() {
+        LodRendererEvents.popDhMatrices();
         GLStateManager.glBindVertexArray(0);
         GLStateManager.glUseProgram(0);
         ProgramUniforms.clearActiveUniforms();

src/main/java/net/coderbot/iris/compat/dh/IrisLodRenderProgram.java

@@ -3,7 +3,6 @@ package net.coderbot.iris.compat.dh;
 import com.google.common.primitives.Ints;
 import com.gtnewhorizons.angelica.glsm.GLStateManager;
 import com.gtnewhorizons.angelica.mixins.interfaces.EntityRendererAccessor;
-import com.mitchej123.lwjgl.MemoryStack;
 import com.seibel.distanthorizons.api.DhApi;
 import com.seibel.distanthorizons.api.objects.math.DhApiVec3f;
 import net.coderbot.iris.gl.blending.BlendModeOverride;
@@ -26,15 +25,12 @@ import net.coderbot.iris.uniforms.builtin.BuiltinReplacementUniforms;
 import net.coderbot.iris.uniforms.custom.CustomUniforms;
 import net.minecraft.client.Minecraft;
 import net.minecraft.client.renderer.texture.DynamicTexture;
-import org.joml.Matrix3f;
-import org.joml.Matrix4f;
 import org.joml.Matrix4fc;
 import org.lwjgl.opengl.GL11;
 import org.lwjgl.opengl.GL13;
 import org.lwjgl.opengl.GL20;
 import org.lwjgl.opengl.GL32;
 
-import java.nio.FloatBuffer;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.Map;
@@ -44,11 +40,6 @@ public class IrisLodRenderProgram {
     public final int modelOffsetUniform;
     public final int worldYOffsetUniform;
     public final int mircoOffsetUniform;
-    public final int modelViewUniform;
-    public final int modelViewInverseUniform;
-    public final int projectionUniform;
-    public final int projectionInverseUniform;
-    public final int normalMatrix3fUniform;
     // Fog/Clip Uniforms
     public final int clipDistanceUniform;
     private final int id;
@@ -58,9 +49,6 @@ public class IrisLodRenderProgram {
     private final ProgramImages images;
     private final BlendModeOverride blend;
     private final BufferBlendOverride[] bufferBlendOverrides;
-    private final Matrix4f tempMat4a = new Matrix4f();
-    private final Matrix4f tempMat4b = new Matrix4f();
-    private final Matrix3f tempMat3 = new Matrix3f();
 
     // This will bind  AbstractVertexAttribute
     private IrisLodRenderProgram(String name, boolean isShadowPass, boolean translucent, BlendModeOverride override, BufferBlendOverride[] bufferBlendOverrides, String vertex, String tessControl, String tessEval, String geometry, String fragment, CustomUniforms customUniforms, DeferredWorldRenderingPipeline pipeline) {
@@ -132,11 +120,6 @@ public class IrisLodRenderProgram {
         modelOffsetUniform = tryGetUniformLocation2("modelOffset");
         worldYOffsetUniform = tryGetUniformLocation2("worldYOffset");
         mircoOffsetUniform = tryGetUniformLocation2("mircoOffset");
-        projectionUniform = tryGetUniformLocation2("iris_ProjectionMatrix");
-        projectionInverseUniform = tryGetUniformLocation2("iris_ProjectionMatrixInverse");
-        modelViewUniform = tryGetUniformLocation2("iris_ModelViewMatrix");
-        modelViewInverseUniform = tryGetUniformLocation2("iris_ModelViewMatrixInverse");
-        normalMatrix3fUniform = tryGetUniformLocation2("iris_NormalMatrix");
 
         // Fog/Clip Uniforms
         clipDistanceUniform = tryGetUniformLocation2("clipDistance");
@@ -176,30 +159,6 @@ public class IrisLodRenderProgram {
         return GLStateManager.glGetUniformLocation(this.id, name);
     }
 
-    public void setUniform(int index, Matrix4fc matrix) {
-        if (index == -1 || matrix == null) return;
-
-        try (MemoryStack stack = MemoryStack.stackPush()) {
-            FloatBuffer buffer = stack.callocFloat(16);
-            matrix.get(buffer);
-            buffer.rewind();
-
-            GLStateManager.glUniformMatrix4(index, false, buffer);
-        }
-    }
-
-    public void setUniform(int index, Matrix3f matrix) {
-        if (index == -1) return;
-
-        try (MemoryStack stack = MemoryStack.stackPush()) {
-            FloatBuffer buffer = stack.callocFloat(9);
-            matrix.get(buffer);
-            buffer.rewind();
-
-            GLStateManager.glUniformMatrix3(index, false, buffer);
-        }
-    }
-
     // Override ShaderProgram.bind()
     public void bind() {
         GLStateManager.glUseProgram(id);
@@ -227,11 +186,8 @@ public class IrisLodRenderProgram {
         GLStateManager.glActiveTexture(GL13.GL_TEXTURE0 + IrisSamplers.LIGHTMAP_TEXTURE_UNIT);
         DynamicTexture lightmapTexture = ((EntityRendererAccessor) Minecraft.getMinecraft().entityRenderer).getLightmapTexture();
         GLStateManager.glBindTexture(GL11.GL_TEXTURE_2D, lightmapTexture.getGlTextureId());
-        setUniform(modelViewUniform, modelView);
-        setUniform(modelViewInverseUniform, modelView.invert(tempMat4a));
-        setUniform(projectionUniform, projection);
-        setUniform(projectionInverseUniform, projection.invert(tempMat4b));
-        setUniform(normalMatrix3fUniform, tempMat4a.set(modelView).invert().transpose3x3(tempMat3));
+
+        LodRendererEvents.pushDhMatrices(projection, modelView);
 
         setUniform(mircoOffsetUniform, 0.01f); // 0.01 block offset
 

src/main/java/net/coderbot/iris/compat/dh/LodRendererEvents.java

@@ -33,6 +33,7 @@ import net.coderbot.iris.shadows.ShadowRenderingState;
 import net.coderbot.iris.uniforms.CapturedRenderingState;
 import net.irisshaders.iris.api.v0.IrisApi;
 import org.joml.Matrix4f;
+import org.joml.Matrix4fc;
 import org.lwjgl.opengl.GL11;
 
 public class LodRendererEvents {
@@ -46,6 +47,28 @@ public class LodRendererEvents {
     private static int textureHeight;
     private static final Matrix4f tempMat4 = new Matrix4f();
 
+    private static boolean dhMatricesActive = false;
+    private static final Matrix4f savedModelView = new Matrix4f();
+    private static final Matrix4f savedProjection = new Matrix4f();
+
+    static void pushDhMatrices(Matrix4fc projection, Matrix4fc modelView) {
+        if (!dhMatricesActive) {
+            savedModelView.set(GLStateManager.getModelViewMatrix());
+            savedProjection.set(GLStateManager.getProjectionMatrix());
+            dhMatricesActive = true;
+        }
+        GLStateManager.setModelViewMatrix(modelView);
+        GLStateManager.setProjectionMatrix(projection);
+    }
+
+    static void popDhMatrices() {
+        if (dhMatricesActive) {
+            GLStateManager.setModelViewMatrix(savedModelView);
+            GLStateManager.setProjectionMatrix(savedProjection);
+            dhMatricesActive = false;
+        }
+    }
+
 
     // constructor //
 
@@ -181,6 +204,7 @@ public class LodRendererEvents {
         DhApiBeforeRenderCleanupEvent beforeCleanupEvent = new DhApiBeforeRenderCleanupEvent() {
             @Override
             public void beforeCleanup(DhApiEventParam<DhApiRenderParam> event) {
+                popDhMatrices();
                 if (getInstance().shouldOverride) {
                     if (ShadowRenderingState.areShadowsCurrentlyBeingRendered()) {
                         getInstance().getShadowShader().unbind();

src/main/java/net/coderbot/iris/config/IrisConfig.java

@@ -38,6 +38,8 @@ public class IrisConfig {
 	 */
 	private boolean enableDebugOptions;
 
+	private boolean allowUnknownShaders;
+
 	private final Path propertiesPath;
 
 	public IrisConfig(Path propertiesPath) {
@@ -45,6 +47,7 @@ public class IrisConfig {
 		enableShaders = true;
 		disableUpdateMessage = false;
 		enableDebugOptions = false;
+		allowUnknownShaders = false;
 		this.propertiesPath = propertiesPath;
 	}
 
@@ -113,6 +116,25 @@ public class IrisConfig {
 		return enableDebugOptions;
 	}
 
+	/**
+	 * Sets whether debug features are enabled.
+	 */
+	public void setDebugEnabled(boolean enabled) {
+		this.enableDebugOptions = enabled;
+	}
+
+	public boolean shouldAllowUnknownShaders() {
+		return allowUnknownShaders;
+	}
+
+	/**
+	 * Sets whether unrecognized shader packs may load.
+	 */
+	public void setUnknown(boolean allow) throws IOException {
+		this.allowUnknownShaders = allow;
+		save();
+	}
+
 	/**
 	 * loads the config file and then populates the string, int, and boolean entries with the parsed entries
 	 *
@@ -132,6 +154,7 @@ public class IrisConfig {
 		shaderPackName = properties.getProperty("shaderPack");
 		enableShaders = !"false".equals(properties.getProperty("enableShaders"));
 		enableDebugOptions = "true".equals(properties.getProperty("enableDebugOptions"));
+		allowUnknownShaders = "true".equals(properties.getProperty("allowUnknownShaders"));
 		disableUpdateMessage = "true".equals(properties.getProperty("disableUpdateMessage"));
         // TODO: GUI
         try {
@@ -159,6 +182,7 @@ public class IrisConfig {
 		properties.setProperty("shaderPack", getShaderPackName().orElse(""));
 		properties.setProperty("enableShaders", enableShaders ? "true" : "false");
 		properties.setProperty("enableDebugOptions", enableDebugOptions ? "true" : "false");
+		properties.setProperty("allowUnknownShaders", allowUnknownShaders ? "true" : "false");
 		properties.setProperty("disableUpdateMessage", disableUpdateMessage ? "true" : "false");
 		properties.setProperty("maxShadowRenderDistance", String.valueOf(IrisVideoSettings.shadowDistance));
 		// NB: This uses ISO-8859-1 with unicode escapes as the encoding

src/main/java/net/coderbot/iris/gl/shader/StandardMacros.java

@@ -4,6 +4,7 @@ import com.google.common.collect.ImmutableList;
 import com.gtnewhorizons.angelica.Tags;
 import com.gtnewhorizons.angelica.config.AngelicaConfig;
 import cpw.mods.fml.common.Loader;
+import net.coderbot.iris.Iris;
 import net.coderbot.iris.compat.dh.DHCompat;
 import net.coderbot.iris.parsing.BiomeCategories;
 import net.coderbot.iris.pipeline.HandRenderer;
@@ -91,6 +92,10 @@ public class StandardMacros {
 			define(standardDefines, "DISTANT_HORIZONS");
 		}
 
+		if (Iris.getIrisConfig().shouldAllowUnknownShaders()) {
+			define(standardDefines, "ALLOWS_UNKNOWN_SHADERS");
+		}
+
 		define(standardDefines, "DH_BLOCK_UNKNOWN", String.valueOf(0));
 		define(standardDefines, "DH_BLOCK_LEAVES", String.valueOf(1));
 		define(standardDefines, "DH_BLOCK_STONE", String.valueOf(2));

src/main/java/net/coderbot/iris/gui/GuiUtil.java

@@ -4,10 +4,13 @@ import com.gtnewhorizons.angelica.glsm.GLStateManager;
 import cpw.mods.fml.client.config.GuiUtils;
 import lombok.Getter;
 import net.minecraft.client.Minecraft;
+import net.minecraft.client.audio.PositionedSoundRecord;
 import net.minecraft.client.gui.FontRenderer;
 import net.minecraft.client.gui.Gui;
+import net.minecraft.client.gui.ScaledResolution;
 import net.minecraft.client.resources.I18n;
 import net.minecraft.util.ResourceLocation;
+import org.lwjgl.opengl.GL11;
 
 /**
  * Class serving as abstraction and
@@ -111,6 +114,32 @@ public final class GuiUtil {
 		font.drawStringWithShadow(text, x + 4, y + 4, 0xFFFFFF);
 	}
 
+	public static void drawScrollingText(FontRenderer font, String text, int centerX, int minX, int maxX, int minY, int maxY, int color) {
+		final int textWidth = font.getStringWidth(text);
+		final int boxWidth = maxX - minX;
+		final int textY = ((minY + maxY) - font.FONT_HEIGHT) / 2 + 1;
+
+		if (textWidth > boxWidth) {
+			final int overflow = textWidth - boxWidth;
+			final double time = System.currentTimeMillis() / 1000.0;
+			final double period = Math.max(overflow * 0.5, 3.0);
+			final double t = (Math.sin((Math.PI / 2.0) * Math.cos((Math.PI * 2.0) * time / period)) / 2.0) + 0.5;
+			final int scroll = (int) (t * overflow);
+
+			final Minecraft mc = client();
+			final int scale = new ScaledResolution(mc, mc.displayWidth, mc.displayHeight).getScaleFactor();
+			GLStateManager.glEnable(GL11.GL_SCISSOR_TEST);
+			GLStateManager.glScissor(minX * scale, mc.displayHeight - (maxY * scale), boxWidth * scale, (maxY - minY) * scale);
+			font.drawStringWithShadow(text, minX - scroll, textY, color);
+			GLStateManager.glDisable(GL11.GL_SCISSOR_TEST);
+		} else {
+			int textX = centerX - (textWidth / 2);
+			textX = Math.min(textX, maxX - textWidth);
+			textX = Math.max(textX, minX);
+			font.drawStringWithShadow(text, textX, textY, color);
+		}
+	}
+
 	/**
 	 * Shorten a text to a specific length, adding an ellipsis (...)
 	 * to the end if shortened.
@@ -140,13 +169,25 @@ public final class GuiUtil {
 	 * @return the translated text if found, otherwise the default provided
 	 */
 	public static String translateOrDefault(String defaultText, String translationDesc, Object ... format) {
-        final String translated = I18n.format(translationDesc, format);
+        final String translated = format.length == 0
+            ? translateLenient(translationDesc)
+            : I18n.format(translationDesc, format);
         if(!translated.equals(translationDesc)) {
             return translated;
         }
 		return defaultText;
 	}
 
+	private static final String FORMAT_ERROR_PREFIX = "Format error: ";
+
+	/**
+     * Nasty dirty hack, but it works.
+	 */
+	public static String translateLenient(String key) {
+		final String translated = I18n.format(key);
+		return translated.startsWith(FORMAT_ERROR_PREFIX) ? translated.substring(FORMAT_ERROR_PREFIX.length()) : translated;
+	}
+
 	/**
 	 * Plays the {@code UI_BUTTON_CLICK} sound event as a
 	 * master sound effect.
@@ -155,7 +196,7 @@ public final class GuiUtil {
 	 * or other action.
 	 */
 	public static void playButtonClickSound() {
-//		client().getSoundManager().play(SimpleSoundInstance.forUI(SoundEvents.UI_BUTTON_CLICK, 1));
+		client().getSoundHandler().playSound(PositionedSoundRecord.func_147674_a(new ResourceLocation("gui.button.press"), 1.0F));
 	}
 
 	/**

src/main/java/net/coderbot/iris/gui/element/IrisElementRow.java

@@ -21,7 +21,9 @@ public class IrisElementRow {
 	private final int spacing;
 	private int x;
 	private int y;
-	private int width;
+
+    @Getter
+    private int width;
 	private int height;
 
 	public IrisElementRow(int spacing) {

src/main/java/net/coderbot/iris/gui/element/IrisGuiSlot.java

@@ -19,7 +19,7 @@ public abstract class IrisGuiSlot extends GuiSlot {
         super(mc, width, height, top, bottom, slotHeight);
         // Set Center Vertically to false
         this.field_148163_i = false;
-
+        this.headerPadding = 2;
     }
 
     @Override
@@ -37,11 +37,15 @@ public abstract class IrisGuiSlot extends GuiSlot {
     }
 
     @Override
-    protected void drawSelectionBox(int x, int y, int mouseX, int mouseY) {
-        final int oldPadding = this.headerPadding;
-        this.headerPadding = 2;
-        super.drawSelectionBox(x, y, mouseX, mouseY);
-        this.headerPadding = oldPadding;
+    public int func_148124_c/*getSlotIndexFromScreenCoords*/(int x, int y) {
+        final int left = this.left + this.width / 2 - this.getListWidth() / 2 + hitLeftInset() + hitXShift();
+        final int right = this.left + this.width / 2 + this.getListWidth() / 2 - hitRightInset() + hitXShift();
+        final int relativeY = y - this.top + (int) this.amountScrolled - hitYOffset();
+        final int index = relativeY / this.slotHeight;
+        if (y <= this.top || y >= this.bottom) {
+            return -1;
+        }
+        return x < this.getScrollBarX() && x >= left && x <= right && index >= 0 && relativeY >= 0 && index < this.getSize() ? index : -1;
     }
 
     @Override
@@ -53,6 +57,23 @@ public abstract class IrisGuiSlot extends GuiSlot {
         return false;
     }
 
+    protected int hitYOffset() {
+        return 4;
+    }
+
+    protected int hitRightInset() {
+        return 0;
+    }
+
+    protected int hitLeftInset() {
+        return 0;
+    }
+
+    protected int hitXShift() {
+        return 0;
+    }
+
+
     public boolean mouseClicked(int mouseX, int mouseY, int mouseButton) {
         if (!this.func_148125_i/*enabled*/()) {
             return false;
@@ -60,15 +81,15 @@ public abstract class IrisGuiSlot extends GuiSlot {
         final int size = this.getSize();
         final int scrollBarX = this.getScrollBarX();
         final int rightEdge = scrollBarX + 6;
-        final int elementLeft = this.width / 2 - this.getListWidth() / 2;
-        final int elementRight = this.width / 2 + this.getListWidth() / 2;
-        final int relativeY = mouseY - this.top - this.headerPadding + (int) this.amountScrolled - 4;
+        final int elementLeft = this.width / 2 - this.getListWidth() / 2 + hitLeftInset() + hitXShift();
+        final int elementRight = this.width / 2 + this.getListWidth() / 2 - hitRightInset() + hitXShift();
+        final int relativeY = mouseY - this.top + (int) this.amountScrolled - hitYOffset();
         boolean handled = false;
         final boolean leftMouseDown = Mouse.isButtonDown(0);
         final boolean rightMouseDown = Mouse.isButtonDown(1);
 
         if (mouseX <= this.left || mouseX >= this.right || mouseY <= this.top || mouseY >= this.bottom) {
-            return handled;
+            return false;
         }
         if (leftMouseDown && mouseX >= scrollBarX && mouseX <= rightEdge) {
             scrolling = true;