Fix cached item in RenderItemFrame leaking both world client and server (#1659)

* Update zh_CN.lang

* update zh_CN.lang for dynamic lights

.gitignore

@@ -3,7 +3,7 @@
 /.idea/
 /.vs/
 /.vscode/
-/run/
+run/
 build/
 /eclipse/
 .classpath

CTM.MD

@@ -0,0 +1,302 @@
+# CTM Guide<img src="img/logo-readme.png" align="right">
+###### by Vortex [@vortex_so in discord, any suggestions are accepted]<br>
+
+This file describes how to use CTM, structure of `.properties` file and some useful (or not) techniques
+
+### Note:
+- All textures for CTM textures are in `[modname]/mcpatcher/ctm` folder<br>
+the overrides apply globally so it doesn't matter in which directory you put them<br>
+
+- in the `ctm` folder you must have a folder with your block name (or any name actually)<br>
+in that folder you will have all texture files (animations allowed via mcmeta file for every texture) and `.properties` file<br>
+multiple `.properties` files are allowed for a single folder and set of textures for more complex behaviour (see examples)
+
+## Quick Links
+- **[Method](#method)**
+- **[MatchBlocks](#matchblocks)**
+- **[MatchTiles](#matchtiles)**
+- **[Tiles](#tiles)**
+- **[Connect](#connect)**
+- **[Faces](#faces)**
+- **[Biomes](#biomes)**
+- **[Heights](#heights)**
+- **[RenderPass](#renderpass)**
+- **[InnerSeams](#innerseams)**
+- **[Weights](#weights)**<br>
+- **[Examples](#examples)**
+
+## Structure of `.properties` files
+
+---
+
+## `matchBlocks`
+Override for a specific block, you can get the value from the tooltip if you have this feature enabled.<br>
+Can accept several values which allows to apply one CTM for different blocks.<br>
+if no value for this property was provided, Angelica will fallback to name of the `.property` file
+
+examples:<br>
+`matchBlocks=gregtech:gt.blockcasings4`<br>
+`matchBlocks=minecraft:glass minecraft:glass_pane`
+
+---
+
+## `matchTiles`
+Override for a specific texture, main difference from matchBlocks is that this will only match a certain texture, not the block itself<br>
+
+example:<br>
+`matchTiles:minecraft:blocks/stone`
+
+---
+
+## `tiles`
+The list of texture names for CTM. Supports ranges and explicit names.<br>
+You probably would want to use texture names like `0.png`, `1.png` as it is easier, however this allows for any names
+
+examples:<br>
+`tiles=0-46` - classic for full CTM, expects files from `0.png` to `46.png`<br>
+`tiles=0-3,5, 8` - expects files `0.png`, `1.png`, `2.png`, `3.png`, `5.png`, `8.png`<br>
+`tiles=sometext,somemoretext` - expects files `sometext.png`, `somemoretext.png`
+
+---
+
+## `connect`
+Sets how the blocks are connected, can accept values: `block`, `tile`, `material`<br>
+`block` connects based on block (who would guess)<br>
+`tile` connects based on texture<br>
+`material` connects based on material (didn't really understand this part, ig it is for stone, iron, wood etc)<br>
+Fallbacks to `block` if no value for `matchTiles` is set, otherwise fallbacks to `tile`<br>
+Most of the time you don't need to set this value because of that fallback rule
+
+example:<br>
+`connect=block`
+
+---
+
+## `faces`
+Limit to specific faces of a block, can accept several values<br>
+Fallbacks to `all` if value not present in the `.properties` file
+
+examples:<br>
+`faces=top`<br>
+`faces=all`<br>
+`faces=bottom`<br>
+`faces=sides`<br>
+`faces=north south east west`<br>
+`faces=top bottom sides`
+
+---
+
+## `biomes`
+Limit to specific biomes, can accept several values<br>
+Fallbacks to all if value not present in the `.properties` file
+
+examples:<br>
+`biomes=plains`<br>
+`biomes=desert forest`<br>
+`biomes=taiga jungle savanna`
+
+---
+
+## `heights`
+Limit to certain Y levels, can only accept several values<br>
+can be set through either `minHeight` and `maxHeight` or `heights`
+
+examples:<br>
+`heights=0-64`<br>
+`heights=64-255`<br>
+example of maxHeight and minHeight:<br>
+`minHeight=64`<br>
+`maxHeight=128`
+
+---
+
+## `renderPass`
+Controls which rendering layer a CTM rule is applied in<br>
+In most cases you only need it to avoid rendering issues with transparency
+
+`renderPass=solid` used for fully opaque blocks<br>
+`renderPass=cutout` used for fences, glass CTM, textured blocks with hard transparency<br>
+`renderPass=translucent` used for transparent blocks like glass or water<br>
+`renderPass=cutout_mipped` no idea for what<br>
+`renderPass=overlay` used for blocks with an overlay, for example GT hatches or damaged anvils<br>
+`renderPass=backface` used for blocks with a backface, however it is very rare to use this one
+
+---
+
+## `innerSeams`
+Adds internal seams, fallback to `innerSeams=false` if not set<br>
+
+example:<br>
+`innerSeams=true`
+
+---
+
+## `weights`
+Priority, used for `Random` type to determine which textures have certain chances to be used for render<br>
+accepts several values, assigns values correspondingly to `tiles` list values
+
+examples:<br>
+`weight=10`<br>
+`weights=1 3 3 2 1`
+
+---
+
+# `Method`
+
+Selects CTM mode:
+- [LINK](#full-ctm-ctm) `ctm` / `glass` / `default`
+- [LINK](#compact-ctm) `compact` / `ctm_compact`
+- [LINK](#horizontal)`horizontal` / `bookshelf`
+- [LINK](#vertical)`vertical`
+- [LINK](#horizontalvertical-hv)`horizontal+vertical` / `h+v`
+- [LINK](#verticalhorizontal-vh)`vertical+horizontal` / `v+h`
+- [LINK](#top)`top` / `sandstone`
+- [LINK](#repeat)`repeat` / `pattern`
+- [LINK](#random)`random`
+- [LINK](#fixed)`fixed` / `static`
+
+example:<br>
+`method=ctm`
+
+### Full CTM (ctm)
+
+Requires exactly 47 tiles, the most versatile but the most size-heavy method
+
+Here's a visual explanation of how the textures should be numbered:
+
+<img src="img/CTM/CTM-pattern.png" width="624" style="image-rendering: pixelated;">
+
+---
+
+### Compact CTM
+
+Requires exactly 5 tiles.
+
+<img src="img/CTM/CCTM-pattern.png" width="284" style="image-rendering: pixelated;">
+
+Splits face into 4 quadrants and builds final texture per quadrant.
+
+Here's a visual explanation of how it works on an example of 3x3 blocks pattern with a cutout:
+
+<img src="img/CTM/CCTM-principle.png" width="400" style="image-rendering: pixelated;">
+
+as you can see, compact CTM has a single limitation:<br>
+the size of any part of texture, such as an edge or a corner, can't be larger than `8x8` pixel<br>
+this is the main case where only full CTM can be used.
+
+---
+
+### Horizontal
+
+Requires exactly 4 tiles. connects only horizontally, used for bookshelves for example
+
+<img src="img/CTM/HCTM-pattern.png" width="284" style="image-rendering: pixelated;">
+
+
+---
+
+### Vertical
+
+Requires exactly 4 tiles.
+
+<img src="img/CTM/VCTM-pattern.png" height="284" style="image-rendering: pixelated;">
+
+---
+
+### Horizontal+Vertical (h+v)
+
+Requires exactly 7 tiles.
+
+Two-stage: horizontal first, then vertical if none horizontal variations are found.
+
+<img src="img/CTM/HVCTM-pattern.png" height="284" style="image-rendering: pixelated;">
+
+---
+
+### Vertical+Horizontal (v+h)
+
+Requires exactly 7 tiles.
+
+Two-stage: vertical first, then horizontal if none vertical variations are found.
+
+<img src="img/CTM/VHCTM-pattern.png" height="284" style="image-rendering: pixelated;">
+
+---
+
+### Top
+
+Requires exactly 1 tile.
+
+Applies tile on side faces when block above matches, for example used for smooth sandstone
+
+---
+
+### Repeat
+
+Requires width * height tiles.
+
+Properties:
+- `width` - defines the number of tiles in width
+- `height` - defines the number of tiles in height
+- `symmetry` - defines the symmetry of the pattern, can be either `none` or `opposite`
+
+Just uses N*M grid, for example<br>
+`0 1 2 3 4`<br>
+`5 6 7 8 9`
+
+---
+
+### Random
+
+Any number of tiles.
+
+Properties:
+- `weights` - described [here](#weights)
+- `symmetry` - accepts `all`, `opposite`, `none`, groups opposite faces together, otherwise keeps them independent
+- `linked` - makes the textures consistent between render states, not needed much
+
+---
+
+### Fixed
+
+Requires exactly 1 tile. Always uses the same tile.<br>
+useful only if combined with height or other properties (see examples)
+
+---
+
+# Examples
+
+## Glass via full CTM
+```properties
+matchBlocks=minecraft:glass minecraft:glass_pane
+metadata=0
+method=ctm
+faces=all
+tiles=0-46
+connect=block
+```
+
+## Multiple properties files usage
+### Use multiple .properties files with different heights for more detailed worldgen
+this one will use one texture for lower part of the world and another for the rest of the world
+```properties
+matchBlocks=minecraft:dirt
+metadata=0
+method=fixed
+faces=all
+tiles=0
+connect=block
+maxHeight=40
+```
+
+```properties
+matchBlocks=minecraft:dirt
+metadata=0
+method=fixed
+faces=all
+tiles=0
+connect=block
+minHeight=41
+```
+
+---

dependencies.gradle

@@ -83,7 +83,7 @@ dependencies {
     shadowImplementation("net.minecraftforge:eventbus:7.0-beta.15")
 
     shadowImplementation("org.anarres:jcpp:1.4.14") // Apache 2.0
-    shadowImplementation("org.taumc:glsl-transformation-lib:0.2.0-26.g5ee7d96-GTNH") {
+    shadowImplementation("org.taumc:glsl-transformation-lib:0.2.0-32.g7dd88a4-GTNH") {
         exclude module: "antlr4" // we only want to shadow the runtime module
     }
     shadowImplementation("org.antlr:antlr4-runtime:4.13.2")
@@ -97,6 +97,8 @@ dependencies {
     devOnlyNonPublishable('com.github.GTNewHorizons:NotEnoughItems:2.8.35-GTNH:dev')
     devOnlyNonPublishable('com.github.GTNewHorizons:CodeChickenCore:1.4.7:dev')
 
+    //devOnlyNonPublishable('com.github.GTNewHorizons:worldedit-gtnh:v0.0.9')
+
     // Notfine Deps
     compileOnly("thaumcraft:Thaumcraft:1.7.10-4.2.3.5:dev")
     devOnlyNonPublishable("com.github.GTNewHorizons:Baubles-Expanded:2.2.2-GTNH:dev")

glsm/build.gradle.kts

@@ -76,7 +76,7 @@ dependencies {
     compileOnly("org.lwjgl.lwjgl:lwjgl:${property("lwjglVersion")}")
     compileOnly("org.lwjgl.lwjgl:lwjgl_util:${property("lwjglVersion")}")
 
-    compileOnly("org.ow2.asm:asm-tree:9.7")
+    compileOnly("org.ow2.asm:asm-tree:5.0.3")
 
     // Our Deps
     api("com.github.GTNewHorizons:GTNHLib:${property("gtnhlibVersion")}:dev")
@@ -100,6 +100,7 @@ dependencies {
     testImplementation(sourceSets["stubs"].output)
     testImplementation(platform("org.junit:junit-bom:${property("junitBomVersion")}"))
     testImplementation("org.junit.jupiter:junit-jupiter")
+    testImplementation("org.ow2.asm:asm-tree:9.7")
     testImplementation("org.lwjgl.lwjgl:lwjgl:${property("lwjglVersion")}")
     testRuntimeOnly("org.junit.platform:junit-platform-launcher")
     testRuntimeOnly("org.apache.logging.log4j:log4j-core:${property("log4jVersion")}")

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

@@ -345,6 +345,27 @@ public class FeedbackManager {
                 }
                 break;
 
+            case GL11.GL_QUAD_STRIP:
+                for (int i = 0; i + 3 < count; i += 2) {
+                    feedbackToken(GL11.GL_POLYGON_TOKEN);
+                    feedbackToken(4);
+                    emitVertex(reader.read(i), stride);
+                    emitVertex(reader.read(i + 1), stride);
+                    emitVertex(reader.read(i + 3), stride);
+                    emitVertex(reader.read(i + 2), stride);
+                }
+                break;
+
+            case GL11.GL_POLYGON:
+                if (count >= 3) {
+                    feedbackToken(GL11.GL_POLYGON_TOKEN);
+                    feedbackToken(count);
+                    for (int i = 0; i < count; i++) {
+                        emitVertex(reader.read(i), stride);
+                    }
+                }
+                break;
+
             default:
                 throw new UnsupportedOperationException("Feedback mode: unsupported primitive mode 0x" + Integer.toHexString(mode));
         }

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

@@ -419,6 +419,9 @@ public class GLStateManager {
     @Getter protected static int boundVBO;
     @Getter protected static int boundEBO;
     @Getter protected static int boundVAO;
+    private static int clientArraysVBO = 0;
+    private static int clientArraysVBOCapacity = 0;
+    private static final int[] clientArraysVBOOffsets = new int[VertexAttribState.MAX_ATTRIBS];
     private static int boundPixelUnpackBuffer;
     private static int boundPixelPackBuffer;
     private static final Int2IntOpenHashMap vaoEboMap = new Int2IntOpenHashMap();
@@ -946,10 +949,11 @@ public class GLStateManager {
 
         switch (pname) {
             case GL11.GL_COLOR_WRITEMASK -> {
-                params.put((byte) (colorMask.red ? GL11.GL_TRUE : GL11.GL_FALSE));
-                params.put((byte) (colorMask.green ? GL11.GL_TRUE : GL11.GL_FALSE));
-                params.put((byte) (colorMask.blue ? GL11.GL_TRUE : GL11.GL_FALSE));
-                params.put((byte) (colorMask.alpha ? GL11.GL_TRUE : GL11.GL_FALSE));
+                final int pos = params.position();
+                params.put(pos, (byte) (colorMask.red ? GL11.GL_TRUE : GL11.GL_FALSE));
+                params.put(pos + 1, (byte) (colorMask.green ? GL11.GL_TRUE : GL11.GL_FALSE));
+                params.put(pos + 2, (byte) (colorMask.blue ? GL11.GL_TRUE : GL11.GL_FALSE));
+                params.put(pos + 3, (byte) (colorMask.alpha ? GL11.GL_TRUE : GL11.GL_FALSE));
             }
             default -> {
                 if (!HAS_MULTIPLE_SET.contains(pname)) {
@@ -1060,7 +1064,7 @@ public class GLStateManager {
             case GL11.GL_DIFFUSE -> state.diffuse.get(0, params);
             case GL11.GL_SPECULAR -> state.specular.get(0, params);
             case GL11.GL_EMISSION -> state.emission.get(0, params);
-            case GL11.GL_SHININESS -> params.put(state.shininess);
+            case GL11.GL_SHININESS -> params.put(params.position(), state.shininess);
             case GL11.GL_COLOR_INDEXES -> state.colorIndexes.get(0, params);
             default -> {
             }
@@ -1075,11 +1079,11 @@ public class GLStateManager {
             case GL11.GL_SPECULAR -> state.specular.get(0, params);
             case GL11.GL_POSITION -> state.position.get(0, params);
             case GL11.GL_SPOT_DIRECTION -> state.spotDirection.get(0, params);
-            case GL11.GL_SPOT_EXPONENT -> params.put(state.spotExponent);
-            case GL11.GL_SPOT_CUTOFF -> params.put(state.spotCutoff);
-            case GL11.GL_CONSTANT_ATTENUATION -> params.put(state.constantAttenuation);
-            case GL11.GL_LINEAR_ATTENUATION -> params.put(state.linearAttenuation);
-            case GL11.GL_QUADRATIC_ATTENUATION -> params.put(state.quadraticAttenuation);
+            case GL11.GL_SPOT_EXPONENT -> params.put(params.position(), state.spotExponent);
+            case GL11.GL_SPOT_CUTOFF -> params.put(params.position(), state.spotCutoff);
+            case GL11.GL_CONSTANT_ATTENUATION -> params.put(params.position(), state.constantAttenuation);
+            case GL11.GL_LINEAR_ATTENUATION -> params.put(params.position(), state.linearAttenuation);
+            case GL11.GL_QUADRATIC_ATTENUATION -> params.put(params.position(), state.quadraticAttenuation);
             default -> {
             }
         }
@@ -1098,21 +1102,39 @@ public class GLStateManager {
             case GL11.GL_COLOR_CLEAR_VALUE -> clearColor.get(params);
             case GL11.GL_CURRENT_COLOR -> color.get(params);
             case GL11.GL_DEPTH_RANGE -> {
-                params.put((float) viewportState.depthRangeNear);
-                params.put((float) viewportState.depthRangeFar);
+                final int pos = params.position();
+                params.put(pos, (float) viewportState.depthRangeNear);
+                params.put(pos + 1, (float) viewportState.depthRangeFar);
+            }
+            case GL14.GL_BLEND_COLOR -> {
+                final int pos = params.position();
+                params.put(pos, blendState.getBlendColorR());
+                params.put(pos + 1, blendState.getBlendColorG());
+                params.put(pos + 2, blendState.getBlendColorB());
+                params.put(pos + 3, blendState.getBlendColorA());
             }
-            case GL14.GL_BLEND_COLOR -> params.put(blendState.getBlendColorR()).put(blendState.getBlendColorG()).put(blendState.getBlendColorB()).put(blendState.getBlendColorA());
             case GL11.GL_CURRENT_NORMAL -> {
                 final Vector3f normal = ShaderManager.getCurrentNormal();
-                params.put(normal.x).put(normal.y).put(normal.z);
+                final int pos = params.position();
+                params.put(pos, normal.x);
+                params.put(pos + 1, normal.y);
+                params.put(pos + 2, normal.z);
             }
             case GL11.GL_CURRENT_TEXTURE_COORDS -> {
                 final Vector4f tc = ShaderManager.getCurrentTexCoord();
-                params.put(tc.x).put(tc.y).put(tc.z).put(tc.w);
+                final int pos = params.position();
+                params.put(pos, tc.x);
+                params.put(pos + 1, tc.y);
+                params.put(pos + 2, tc.z);
+                params.put(pos + 3, tc.w);
             }
             case GL11.GL_FOG_COLOR -> {
                 final FloatBuffer fogBuf = fogState.getFogColorBuffer();
-                params.put(fogBuf.get(0)).put(fogBuf.get(1)).put(fogBuf.get(2)).put(fogBuf.get(3));
+                final int pos = params.position();
+                params.put(pos, fogBuf.get(0));
+                params.put(pos + 1, fogBuf.get(1));
+                params.put(pos + 2, fogBuf.get(2));
+                params.put(pos + 3, fogBuf.get(3));
             }
             case GL11.GL_LIGHT_MODEL_AMBIENT -> lightModel.ambient.get(0, params);
             default -> {
@@ -2145,6 +2167,7 @@ public class GLStateManager {
         }
         prepareWideLineEmulation(mode);
         ShaderManager.getInstance().preDraw();
+        prepareClientArrays();
         RENDER_BACKEND.drawElements(mode, indices);
     }
 
@@ -2158,6 +2181,7 @@ public class GLStateManager {
         }
         prepareWideLineEmulation(mode);
         ShaderManager.getInstance().preDraw();
+        prepareClientArrays();
         if (mode == GL11.GL_QUADS) {
             QuadConverter.drawQuadElementsAsTriangles(indices);
         } else {
@@ -2175,6 +2199,7 @@ public class GLStateManager {
         }
         prepareWideLineEmulation(mode);
         ShaderManager.getInstance().preDraw();
+        prepareClientArrays();
         if (mode == GL11.GL_QUADS) {
             QuadConverter.drawQuadElementsAsTriangles(indices);
         } else {
@@ -2192,6 +2217,7 @@ public class GLStateManager {
         }
         prepareWideLineEmulation(mode);
         ShaderManager.getInstance().preDraw();
+        prepareClientArrays();
         if (mode == GL11.GL_QUADS) {
             QuadConverter.drawQuadElementsAsTriangles(count, type, indices);
         } else {
@@ -2223,6 +2249,7 @@ public class GLStateManager {
         }
         prepareWideLineEmulation(mode);
         ShaderManager.getInstance().preDraw();
+        prepareClientArrays();
         if (mode == GL11.GL_QUADS) {
             QuadConverter.drawQuadElementsAsTriangles(indices_count, type, indices_buffer_offset);
         } else {
@@ -2245,20 +2272,72 @@ public class GLStateManager {
 
     public static void glMultiDrawElementsIndirect(int mode, int type, long indirect, int drawcount, int stride) {
         ShaderManager.getInstance().preDraw();
+        prepareClientArrays();
         RENDER_BACKEND.multiDrawElementsIndirect(mode, type, indirect, drawcount, stride);
     }
 
     public static void glMultiDrawElementsBaseVertex(int mode, long pCount, int type, long pIndices, int drawcount, long pBaseVertex) {
         ShaderManager.getInstance().preDraw();
+        prepareClientArrays();
         RENDER_BACKEND.multiDrawElementsBaseVertex(mode, pCount, type, pIndices, drawcount, pBaseVertex);
     }
 
     public static void glDrawElementsBaseVertex(int mode, int count, int type, long indices, int basevertex) {
         ShaderManager.getInstance().preDraw();
+        prepareClientArrays();
         RENDER_BACKEND.drawElementsBaseVertex(mode, count, type, indices, basevertex);
     }
 
-    public static void glDrawElementsInstanced(int mode, int count, int type, long indices, int primcount) { RENDER_BACKEND.drawElementsInstanced(mode, count, type, indices, primcount); }
+    public static void glDrawElementsInstanced(int mode, int count, int type, long indices, int primcount) {
+        ShaderManager.getInstance().preDraw();
+        prepareClientArrays();
+        RENDER_BACKEND.drawElementsInstanced(mode, count, type, indices, primcount);
+    }
+
+    private static void prepareClientArrays() {
+        if (ShaderManager.getInstance().isEnabled() && VertexAttribState.hasAnyClientSideEnabledAttrib()) {
+            uploadClientArraysToVBO();
+        }
+    }
+
+    /**
+     * 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 void uploadClientArraysToVBO() {
+        int totalBytes = 0;
+        for (int i = 0; i < VertexAttribState.MAX_ATTRIBS; i++) {
+            clientArraysVBOOffsets[i] = -1;
+            final VertexAttribState.Attrib a = VertexAttribState.get(i);
+            if (!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 = boundVBO;
+        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 < VertexAttribState.MAX_ATTRIBS; i++) {
+            if (clientArraysVBOOffsets[i] < 0) continue;
+            final VertexAttribState.Attrib a = VertexAttribState.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]);
+        }
+
+        glBindBuffer(GL15.GL_ARRAY_BUFFER, savedVBO);
+    }
 
     public static void glDrawArrays(int mode, int first, int count) {
         CommandRecorder savedRecorder = null;
@@ -2278,8 +2357,13 @@ public class GLStateManager {
         }
         prepareWideLineEmulation(mode);
         ShaderManager.getInstance().preDraw();
+        prepareClientArrays();
         if (mode == GL11.GL_QUADS) {
             QuadConverter.drawQuadsAsTriangles(first, count);
+        } else if (mode == GL11.GL_QUAD_STRIP) {
+            RENDER_BACKEND.drawArrays(GL11.GL_TRIANGLE_STRIP, first, count & ~1);
+        } else if (mode == GL11.GL_POLYGON) {
+            RENDER_BACKEND.drawArrays(GL11.GL_TRIANGLE_FAN, first, count);
         } else {
             RENDER_BACKEND.drawArrays(mode, first, count);
         }
@@ -2298,6 +2382,10 @@ public class GLStateManager {
         glVertexAttribPointer(Usage.POSITION.getAttributeLocation(), size, GL11.GL_FLOAT, false, stride, MemoryUtilities.memByteBuffer(pointer));
     }
 
+    public static void glVertexPointer(int size, int stride, DoubleBuffer pointer) {
+        glVertexAttribPointer(Usage.POSITION.getAttributeLocation(), size, GL11.GL_DOUBLE, false, stride, MemoryUtilities.memByteBuffer(pointer));
+    }
+
     public static void glVertexPointer(int size, int type, int stride, ByteBuffer pointer) {
         glVertexAttribPointer(Usage.POSITION.getAttributeLocation(), size, type, false, stride, pointer);
     }
@@ -2339,6 +2427,10 @@ public class GLStateManager {
         glNormalPointer(GL11.GL_INT, stride, pointer);
     }
 
+    public static void glNormalPointer(int stride, DoubleBuffer pointer) {
+        glNormalPointer(GL11.GL_DOUBLE, stride, pointer);
+    }
+
     public static void glNormalPointer(int type, int stride, ByteBuffer pointer) {
         glVertexAttribPointer(Usage.NORMAL.getAttributeLocation(), 3, type, Usage.NORMAL.isNormalized(), stride, pointer);
     }
@@ -2355,6 +2447,10 @@ public class GLStateManager {
         glVertexAttribPointer(Usage.NORMAL.getAttributeLocation(), 3, GL11.GL_INT, Usage.NORMAL.isNormalized(), stride, MemoryUtilities.memByteBuffer(pointer));
     }
 
+    public static void glNormalPointer(int type, int stride, DoubleBuffer pointer) {
+        glVertexAttribPointer(Usage.NORMAL.getAttributeLocation(), 3, GL11.GL_DOUBLE, Usage.NORMAL.isNormalized(), stride, MemoryUtilities.memByteBuffer(pointer));
+    }
+
     public static void glNormalPointer(int type, int stride, long pointer_buffer_offset) {
         glVertexAttribPointer(Usage.NORMAL.getAttributeLocation(), 3, type, Usage.NORMAL.isNormalized(), stride, pointer_buffer_offset);
     }
@@ -2377,6 +2473,10 @@ public class GLStateManager {
         glTexCoordPointer(size, GL11.GL_SHORT, stride, pointer);
     }
 
+    public static void glTexCoordPointer(int size, int stride, DoubleBuffer pointer) {
+        glTexCoordPointer(size, GL11.GL_DOUBLE, stride, pointer);
+    }
+
     public static void glTexCoordPointer(int size, int type, int stride, FloatBuffer pointer) {
         final int loc = texCoordAttributeLocation();
         if (loc < 0) return;
@@ -2395,6 +2495,12 @@ public class GLStateManager {
         glVertexAttribPointer(loc, size, GL11.GL_INT, false, stride, MemoryUtilities.memByteBuffer(pointer));
     }
 
+    public static void glTexCoordPointer(int size, int type, int stride, DoubleBuffer pointer) {
+        final int loc = texCoordAttributeLocation();
+        if (loc < 0) return;
+        glVertexAttribPointer(loc, size, GL11.GL_DOUBLE, false, stride, MemoryUtilities.memByteBuffer(pointer));
+    }
+
     public static void glTexCoordPointer(int size, int type, int stride, long pointer_buffer_offset) {
         final int loc = texCoordAttributeLocation();
         if (loc < 0) return;
@@ -2441,32 +2547,23 @@ public class GLStateManager {
     }
 
     public static void glVertexAttribPointer(int index, int size, int type, boolean normalized, int stride, FloatBuffer pointer) {
-        final ByteBuffer bb = MemoryUtilities.memByteBuffer(pointer);
-        VertexAttribState.set(index, size, type, normalized, stride, bb, boundVBO);
-        RENDER_BACKEND.vertexAttribPointer(index, size, type, normalized, stride, bb);
+        VertexAttribState.set(index, size, type, normalized, stride, MemoryUtilities.memByteBuffer(pointer), 0);
     }
 
     public static void glVertexAttribPointer(int index, int size, int type, boolean normalized, int stride, DoubleBuffer pointer) {
-        final ByteBuffer bb = MemoryUtilities.memByteBuffer(pointer);
-        VertexAttribState.set(index, size, type, normalized, stride, bb, boundVBO);
-        RENDER_BACKEND.vertexAttribPointer(index, size, type, normalized, stride, bb);
+        VertexAttribState.set(index, size, type, normalized, stride, MemoryUtilities.memByteBuffer(pointer), 0);
     }
 
     public static void glVertexAttribPointer(int index, int size, int type, boolean normalized, int stride, IntBuffer pointer) {
-        final ByteBuffer bb = MemoryUtilities.memByteBuffer(pointer);
-        VertexAttribState.set(index, size, type, normalized, stride, bb, boundVBO);
-        RENDER_BACKEND.vertexAttribPointer(index, size, type, normalized, stride, bb);
+        VertexAttribState.set(index, size, type, normalized, stride, MemoryUtilities.memByteBuffer(pointer), 0);
     }
 
     public static void glVertexAttribPointer(int index, int size, int type, boolean normalized, int stride, ShortBuffer pointer) {
-        final ByteBuffer bb = MemoryUtilities.memByteBuffer(pointer);
-        VertexAttribState.set(index, size, type, normalized, stride, bb, boundVBO);
-        RENDER_BACKEND.vertexAttribPointer(index, size, type, normalized, stride, bb);
+        VertexAttribState.set(index, size, type, normalized, stride, MemoryUtilities.memByteBuffer(pointer), 0);
     }
 
     public static void glVertexAttribPointer(int index, int size, int type, boolean normalized, int stride, ByteBuffer pointer) {
-        VertexAttribState.set(index, size, type, normalized, stride, pointer, boundVBO);
-        RENDER_BACKEND.vertexAttribPointer(index, size, type, normalized, stride, pointer);
+        VertexAttribState.set(index, size, type, normalized, stride, pointer, 0);
     }
 
     public static void glVertexAttribIPointer(int index, int size, int type, int stride, long offset) {
@@ -2475,20 +2572,15 @@ public class GLStateManager {
     }
 
     public static void glVertexAttribIPointer(int index, int size, int type, int stride, ByteBuffer pointer) {
-        VertexAttribState.set(index, size, type, false, stride, pointer, boundVBO);
-        RENDER_BACKEND.vertexAttribIPointer(index, size, type, stride, pointer);
+        VertexAttribState.set(index, size, type, false, stride, pointer, 0);
     }
 
     public static void glVertexAttribIPointer(int index, int size, int type, int stride, IntBuffer pointer) {
-        final ByteBuffer bb = MemoryUtilities.memByteBuffer(pointer);
-        VertexAttribState.set(index, size, type, false, stride, bb, boundVBO);
-        RENDER_BACKEND.vertexAttribIPointer(index, size, type, stride, bb);
+        VertexAttribState.set(index, size, type, false, stride, MemoryUtilities.memByteBuffer(pointer), 0);
     }
 
     public static void glVertexAttribIPointer(int index, int size, int type, int stride, ShortBuffer pointer) {
-        final ByteBuffer bb = MemoryUtilities.memByteBuffer(pointer);
-        VertexAttribState.set(index, size, type, false, stride, bb, boundVBO);
-        RENDER_BACKEND.vertexAttribIPointer(index, size, type, stride, bb);
+        VertexAttribState.set(index, size, type, false, stride, MemoryUtilities.memByteBuffer(pointer), 0);
     }
 
     public static void glVertexAttribDivisor(int index, int divisor) { RENDER_BACKEND.vertexAttribDivisor(index, divisor); }
@@ -4297,9 +4389,20 @@ public class GLStateManager {
         RENDER_BACKEND.finish();
     }
 
-    public static int glGetError() { return RENDER_BACKEND.getError(); }
-    public static String glGetString(int pname) { return RENDER_BACKEND.getString(pname); }
-    public static String glGetStringi(int name, int index) { return RENDER_BACKEND.getStringi(name, index); }
+    public static int glGetError() {
+        if (!RENDER_BACKEND.hasContext()) return 0;
+        return RENDER_BACKEND.getError();
+    }
+
+    public static String glGetString(int pname) {
+        if (!RENDER_BACKEND.hasContext()) return "no valid GL/render context";
+        return RENDER_BACKEND.getString(pname);
+    }
+
+    public static String glGetStringi(int name, int index) {
+        if (!RENDER_BACKEND.hasContext()) return "no valid GL/render context";
+        return RENDER_BACKEND.getStringi(name, index);
+    }
 
     public static void glShaderSource(int shader, CharSequence source) {
         String src = source.toString();
@@ -5814,5 +5917,7 @@ public class GLStateManager {
     public static void glGetUniform(int program, int location, IntBuffer params) {
         RENDER_BACKEND.getUniformiv(program, location, params);
     }
-
+    public static void glGetTexImage(int target, int level, int format, int type, long pixels) {
+        GL11.glGetTexImage(target, level, format, type, pixels);
+    }
 }

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

@@ -36,8 +36,12 @@ public class GlslTransformUtils {
     /** Reserved words added in later GLSL versions that may appear as identifiers in older shaders. */
     private record ReservedWordRename(Pattern pattern, String replacement) {}
     private static final Map<Integer, List<ReservedWordRename>> VERSIONED_RESERVED_WORDS = Map.of(
-        400, List.of(
+        // Some reserved words to always rename
+        0, List.of(
             new ReservedWordRename(Pattern.compile("\\bsample\\b"), RENAMED_PREFIX + "sample"),
+            new ReservedWordRename(Pattern.compile("\\bnew\\b"), RENAMED_PREFIX + "new")
+        ),
+        400, List.of(
             new ReservedWordRename(Pattern.compile("\\bsampler\\b(?!\\d)"), RENAMED_PREFIX + "sampler")
         )
     );

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

@@ -0,0 +1,22 @@
+package com.gtnewhorizons.angelica.glsm;
+
+/**
+ * Tessellator data needed by {@link com.gtnewhorizons.angelica.glsm.streaming.TessellatorStreamingDrawer}.
+ */
+public interface ITessellatorData {
+
+    boolean isDrawing();
+    void setDrawing(boolean drawing);
+    int getVertexCount();
+    int[] getRawBuffer();
+    int getRawBufferIndex();
+    int getRawBufferSize();
+    void setRawBufferSize(int size);
+    void setRawBuffer(int[] buffer);
+    int getDrawMode();
+    boolean hasTexture();
+    boolean hasColor();
+    boolean hasNormals();
+    boolean hasBrightness();
+    void angelica$reset();
+}

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

@@ -9,6 +9,7 @@ import org.lwjgl.opengl.ARBDebugOutputCallback;
 import org.lwjgl.opengl.ARBDirectStateAccess;
 import org.lwjgl.opengl.ContextCapabilities;
 import org.lwjgl.opengl.EXTDirectStateAccess;
+import org.lwjgl.opengl.GLContext;
 import org.lwjgl.opengl.GL11;
 import org.lwjgl.opengl.GL12;
 import org.lwjgl.opengl.GL13;
@@ -67,7 +68,7 @@ public final class Lwjgl2GLRenderBackend extends RenderBackend {
 
     @Override
     public void init() {
-        caps = org.lwjgl.opengl.GLContext.getCapabilities();
+        caps = GLContext.getCapabilities();
         activeDebugExtension = 0;
     }
 
@@ -86,6 +87,15 @@ public final class Lwjgl2GLRenderBackend extends RenderBackend {
         return "OpenGL (LWJGL2)";
     }
 
+    @Override
+    public boolean hasContext() {
+        try {
+            return GLContext.getCapabilities() != null;
+        } catch (Exception e) {
+            return false;
+        }
+    }
+
     @Override
     public int getMinGLSLVersion() {return 330;}
 

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

@@ -19,6 +19,9 @@ public abstract class RenderBackend {
     public abstract boolean isAvailable();
     public abstract String getName();
 
+    /** Returns true if the current thread has a valid render context. Safe to call from any thread. */
+    public abstract boolean hasContext();
+
     /** Higher priority backends are preferred. */
     public int getPriority() { return 0; }
 

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

@@ -273,21 +273,27 @@ public final class FragmentShaderGenerator {
         sb.append("  // Alpha test\n");
         final int func = FragmentKey.decodeAlphaFunc(key.alphaTestFunc());
 
+
+        sb.append("  float qa = round(color.a * 255.0);\n");
         switch (func) {
             case GL11.GL_NEVER ->
                 sb.append("  discard;\n");
             case GL11.GL_LESS ->
-                sb.append("  if (color.a >= u_AlphaRef) discard;\n");
-            case GL11.GL_EQUAL ->
-                sb.append("  if (color.a != u_AlphaRef) discard;\n");
+                sb.append("  if (qa >= u_AlphaRef * 255.0) discard;\n");
+            case GL11.GL_EQUAL -> {
+                sb.append("  float qr = round(u_AlphaRef * 255.0);\n");
+                sb.append("  if (qa != qr) discard;\n");
+            }
             case GL11.GL_LEQUAL ->
-                sb.append("  if (color.a > u_AlphaRef) discard;\n");
+                sb.append("  if (qa > u_AlphaRef * 255.0) discard;\n");
             case GL11.GL_GREATER ->
-                sb.append("  if (color.a <= u_AlphaRef) discard;\n");
-            case GL11.GL_NOTEQUAL ->
-                sb.append("  if (color.a == u_AlphaRef) discard;\n");
+                sb.append("  if (qa <= u_AlphaRef * 255.0) discard;\n");
+            case GL11.GL_NOTEQUAL -> {
+                sb.append("  float qr = round(u_AlphaRef * 255.0);\n");
+                sb.append("  if (qa == qr) discard;\n");
+            }
             case GL11.GL_GEQUAL ->
-                sb.append("  if (color.a < u_AlphaRef) discard;\n");
+                sb.append("  if (qa < u_AlphaRef * 255.0) discard;\n");
             case GL11.GL_ALWAYS -> {}
         }
     }

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

@@ -0,0 +1,32 @@
+package com.gtnewhorizons.angelica.glsm.loading;
+
+import java.util.List;
+
+/**
+ * Verifies required classes/resources are present on the classpath at load time.
+ * Fails fast with a descriptive error message if a dependency is missing.
+ */
+public final class DependencyVerifier {
+
+    /**
+     * A single dependency check: a classpath resource that must exist.
+     * @param resourcePath  Resource path to check (e.g. "/com/example/SomeClass.class")
+     * @param errorMessage  Human-readable error message if missing (include download URL)
+     */
+    public record Check(String resourcePath, String errorMessage) {}
+
+    /**
+     * Verify all checks pass. Throws RuntimeException on first failure.
+     * @param anchor  Class whose classloader to use for resource lookups
+     * @param checks  Dependency checks to run
+     */
+    public static void verify(Class<?> anchor, List<Check> checks) {
+        for (Check check : checks) {
+            if (anchor.getResource(check.resourcePath()) == null) {
+                throw new RuntimeException(check.errorMessage());
+            }
+        }
+    }
+
+    private DependencyVerifier() {}
+}

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

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

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

@@ -0,0 +1,78 @@
+package com.gtnewhorizons.angelica.glsm.loading;
+
+import com.gtnewhorizons.angelica.glsm.loading.TransformerNarrower.NarrowRule;
+
+import java.util.List;
+
+public final class EcosystemNarrowRules {
+
+    public static final List<NarrowRule> ALL = List.of(
+        new NarrowRule("DragonAPI", "Reika.DragonAPI.ASM", List.of(
+            "Reika.DragonAPI.ASM.Patchers",
+            "Reika.DragonAPI.ASM.Profiling",
+            "Reika.DragonAPI.ASM.APIStripper",
+            "Reika.DragonAPI.ASM.ClassReparenter",
+            "Reika.DragonAPI.ASM.DependentMethodStripper",
+            "Reika.DragonAPI.ASM.DragonAPIClassTransformer",
+            "Reika.DragonAPI.ASM.FMLItemBlockPatch",
+            "Reika.DragonAPI.ASM.FluidNamePatch",
+            "Reika.DragonAPI.ASM.InterfaceInjector",
+            "Reika.DragonAPI.ASM.SpecialBiomePlacement",
+            "Reika.DragonAPI.ASM.StructureLootHooks"
+        )),
+
+        new NarrowRule("Xaeros_common", "xaero.common.core", List.of(
+            "xaero.common.core.transformer"
+        )),
+
+        new NarrowRule("Xaeros_map", "xaero.map.core", List.of(
+            "xaero.map.core.transformer"
+        )),
+
+        new NarrowRule("AdvancedLightsabers", "com.fiskmods.lightsabers.asm", List.of(
+            "com.fiskmods.lightsabers.asm.ALLoadingPlugin",
+            "com.fiskmods.lightsabers.asm.ASMHooks",
+            "com.fiskmods.lightsabers.asm.transformers"
+        )),
+
+        new NarrowRule("Ears", "com.unascribed.ears", List.of(
+            "com.unascribed.ears.asm",
+            "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",
+            "alfheim.common.core.asm.hook.Botania18AndUpBackport",
+            "alfheim.common.core.asm.hook.ElementalDamageAdapter",
+            "alfheim.common.core.asm.hook.integration",
+            "alfheim.common.core.asm.hook.extender.FurnaceExtender",
+            "alfheim.common.core.asm.hook.extender.ItemAuraRingExtender",
+            "alfheim.common.core.asm.hook.extender.ItemLensExtender",
+            "alfheim.common.core.asm.hook.extender.ItemTwigWandExtender",
+            "alfheim.common.core.asm.hook.extender.LightRelayExtender",
+            "alfheim.common.core.asm.hook.extender.PureDaisyExtender",
+            "alfheim.common.core.asm.hook.extender.QuartzExtender",
+            "alfheim.common.core.asm.hook.extender.RelicHooks",
+            "alfheim.common.core.asm.hook.extender.SparkExtender",
+            "alfheim.common.core.asm.hook.fixes.BotaniaGlowingRenderFixes",
+            "alfheim.common.core.asm.hook.fixes.CorporeaInputFix",
+            "alfheim.common.core.asm.hook.fixes.GodAttributesHooks",
+            "alfheim.common.core.asm.hook.fixes.RecipeAncientWillsFix"
+        ))
+    );
+
+    public static final String[] LWJGL3IFY_EXCLUSIONS_SHARED = {
+        "org.embeddedt.embeddium",
+        "org.taumc.celeritas",
+        "com.mitchej123.lwjgl.lwjgl3",
+        "com.mitchej123.glsm",
+        "com.gtnewhorizons.angelica.lwjgl3",
+    };
+
+    public static final String[] EARLY_REDIRECTOR_TARGETS = {
+        "cn.tesseract.mycelium.",
+    };
+
+    private EcosystemNarrowRules() {}
+}

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

@@ -0,0 +1,66 @@
+package com.gtnewhorizons.angelica.glsm.loading;
+
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
+
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+
+/**
+ * Narrows overly-broad transformer exclusions that prevent the GLSM redirector from
+ * transforming GL calls in mod code. Some coremods register exclusions covering their
+ * entire package tree, which inadvertently shields rendering code from redirection.
+ * <p>
+ * This utility removes the broad exclusion and re-adds narrower ones that cover only
+ * the coremod's own transformer/ASM classes, leaving rendering code exposed.
+ * <p>
+ * Operates on a {@code Set<String>} (the transformer exceptions set from LaunchClassLoader)
+ * and a {@code Map<String, Object>} (the Launch blackboard). Callers extract these from
+ * the Forge/launchwrapper infrastructure.
+ */
+public final class TransformerNarrower {
+
+    private static final Logger LOGGER = LogManager.getLogger("GLSM");
+
+    /**
+     * A rule that replaces a broad transformer exclusion with narrower ones.
+     * @param name       Human-readable name for logging (e.g. "DragonAPI")
+     * @param broad      The broad exclusion to remove (e.g. "Reika.DragonAPI.ASM")
+     * @param narrow     Narrower exclusions to add in its place
+     */
+    public record NarrowRule(String name, String broad, List<String> narrow) {}
+
+    /**
+     * Apply narrowing rules to the transformer exceptions set.
+     *
+     * @param exceptions  The mutable Set from LaunchClassLoader.transformerExceptions
+     * @param blackboard  The Launch.blackboard map (checked for disable flags)
+     * @param keyPrefix   Blackboard key prefix for per-rule opt-out (e.g. "angelica" or "umbra").
+     *                    Rule "DragonAPI" checks key "{prefix}.narrow.DragonAPI". If explicitly
+     *                    set to Boolean.FALSE, the rule is skipped.
+     * @param callerName  Name for log messages (e.g. "Angelica" or "Umbra")
+     * @param rules       The narrowing rules to apply
+     * @return number of rules that were applied
+     */
+    public static int narrow(Set<String> exceptions, Map<String, Object> blackboard,
+                             String keyPrefix, String callerName, List<NarrowRule> rules) {
+        int applied = 0;
+        for (NarrowRule rule : rules) {
+            final String key = keyPrefix + ".narrow." + rule.name();
+            if (Boolean.FALSE.equals(blackboard.get(key))) {
+                continue;
+            }
+            if (exceptions.remove(rule.broad())) {
+                for (String narrow : rule.narrow()) {
+                    exceptions.add(narrow);
+                }
+                LOGGER.info("[{}] Narrowed {} transformer exclusion to allow GL redirection", callerName, rule.broad());
+                applied++;
+            }
+        }
+        return applied;
+    }
+
+    private TransformerNarrower() {}
+}

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

@@ -75,6 +75,12 @@ public final class DisplayListVBOBuilder {
                 if (data.drawMode == GL11.GL_QUADS) {
                     final IVertexArrayObject indexedVAO = new IndexedVAO(vbo, IndexBuffer.convertQuadsToTrigs(start, start + vertexCount));
                     vbos[data.drawIndex] = new DisplayListVBO.SubVBO(indexedVAO, GL11.GL_TRIANGLES, 0, vertexCount / 4 * 6);
+                } else if (data.drawMode == GL11.GL_QUAD_STRIP) {
+                    // GL_QUAD_STRIP is removed in core profile; an even-length GL_TRIANGLE_STRIP produces the same quads
+                    vbos[data.drawIndex] = new DisplayListVBO.SubVBO(vao, GL11.GL_TRIANGLE_STRIP, start, vertexCount & ~1);
+                } else if (data.drawMode == GL11.GL_POLYGON) {
+                    // GL_POLYGON is removed in core profile; convert to GL_TRIANGLE_FAN which is equivalent for convex polygons
+                    vbos[data.drawIndex] = new DisplayListVBO.SubVBO(vao, GL11.GL_TRIANGLE_FAN, start, vertexCount);
                 } else {
                     vbos[data.drawIndex] = new DisplayListVBO.SubVBO(vao, data.drawMode, start, vertexCount);
                 }

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

@@ -4,16 +4,19 @@ import com.google.common.collect.ImmutableSet;
 import com.gtnewhorizon.gtnhlib.asm.ClassConstantPoolParser;
 import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
+import org.objectweb.asm.Handle;
 import org.objectweb.asm.Opcodes;
 import org.objectweb.asm.tree.AbstractInsnNode;
 import org.objectweb.asm.tree.ClassNode;
 import org.objectweb.asm.tree.IntInsnNode;
+import org.objectweb.asm.tree.InvokeDynamicInsnNode;
 import org.objectweb.asm.tree.LdcInsnNode;
 import org.objectweb.asm.tree.MethodInsnNode;
 import org.objectweb.asm.tree.MethodNode;
 import org.objectweb.asm.tree.TypeInsnNode;
 
 import java.util.ArrayList;
+import java.util.Collections;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
@@ -79,6 +82,9 @@ public class GLSMRedirector {
         glCapRedirects.put(org.lwjgl.opengl.GL11.GL_SCISSOR_TEST, "ScissorTest");
 
         final var gl11 = RedirectMap.newMap()
+            // glEnable/Disable - Special cased in GLSMRedirector, but included here for the external API
+            .add("glEnable")
+            .add("glDisable")
             .add("glAlphaFunc")
             .add("glBegin")
             .add("glBindTexture")
@@ -495,6 +501,22 @@ public class GLSMRedirector {
         return CORE_EXCLUSIONS.clone();
     }
 
+    /** The internal-name prefix used to match GL version classes (e.g., {@code "org/lwjgl/opengl/GL"}). */
+    public static String getGLPrefix() { return GL_PREFIX; }
+
+    /** The internal name of the redirect target class. */
+    public static String getTargetClassName() { return GLStateManager; }
+
+    /** Method redirects for GL-prefix classes. Key: original method name, Value: GLStateManager method name. */
+    public static Map<String, String> getGLPrefixMethodRedirects() {
+        return Collections.unmodifiableMap(glMethodRedirects);
+    }
+
+    /** Method redirects for named (non-GL-prefix) classes. Key: internal class name, Value: per-method redirect map. */
+    public static Map<String, Map<String, String>> getNamedClassMethodRedirects() {
+        return Collections.unmodifiableMap(methodRedirects);
+    }
+
     public boolean shouldTransform(byte[] basicClass) {
         return cstPoolParser.find(basicClass, true);
     }
@@ -504,7 +526,7 @@ public class GLSMRedirector {
         boolean changed = false;
         final boolean isOpenGlHelper = transformedName.equals("net.minecraft.client.renderer.OpenGlHelper");
 
-        for (MethodNode mn : cn.methods) {
+        for (MethodNode mn : (List<MethodNode>) cn.methods) {
             if (isOpenGlHelper && (mn.name.equals("glBlendFunc") || mn.name.equals("func_148821_a"))) {
                 continue;
             }
@@ -590,6 +612,22 @@ public class GLSMRedirector {
                             changed = true;
                         }
                     }
+                } else if (node instanceof InvokeDynamicInsnNode dynNode) {
+                    // Redirect method handles in invokedynamic bootstrap arguments
+                    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());
+                        if (glsmName == null) continue;
+                        if (LOG_SPAM) {
+                            final String shortOwner = handle.getOwner().substring(handle.getOwner().lastIndexOf("/") + 1);
+                            LOGGER.info("Redirecting invokedynamic handle in {} from {}.{}{} to GLStateManager.{}{}", transformedName, shortOwner, handle.getName(), handle.getDesc(), glsmName, handle.getDesc());
+                        }
+                        dynNode.bsmArgs[i] = new Handle(handle.getTag(), GLStateManager, glsmName, handle.getDesc());
+                        changed = true;
+                        redirectInMethod = true;
+                    }
                 }
             }
             if (ASSERT_MAIN_THREAD && redirectInMethod && !transformedName.startsWith(SplashProgress) && !(transformedName.startsWith(MinecraftClient) && ExcludedMinecraftMainThreadChecks.contains(mn.name))) {

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

@@ -103,9 +103,12 @@ public class MaterialState implements ISettableState<MaterialState> {
         }
     }
 
-    public void setShininess(FloatBuffer newBuffer) { setShininess(newBuffer.get()); }
+    // 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 void setShininess(IntBuffer newBuffer) { setShininess((float) newBuffer.get());}
+    public void setShininess(IntBuffer newBuffer) { setShininess((float) newBuffer.get(0)); }
 
     public void setShininess(int val) { setShininess((float) val);}
 

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

@@ -16,16 +16,19 @@ public class VertexAttribState {
     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) {
@@ -39,6 +42,7 @@ public class VertexAttribState {
         vaoAttribs.clear();
         pool.clear();
         current = null;
+        clientSideEnabledCount = 0;
     }
 
     private static Attrib[] allocAttribArray() {
@@ -55,6 +59,7 @@ public class VertexAttribState {
     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;
@@ -62,11 +67,13 @@ public class VertexAttribState {
         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;
@@ -74,17 +81,33 @@ public class VertexAttribState {
         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;
-        current[index].enabled = enabled;
+        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;
+    }
+
     public static boolean hasVBOBoundAttrib() {
         for (int i = 0; i < MAX_ATTRIBS; i++) {
             if (current[i].enabled && current[i].vboId != 0) return true;
@@ -92,6 +115,14 @@ public class VertexAttribState {
         return false;
     }
 
+    /**
+     * 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;
@@ -102,6 +133,10 @@ public class VertexAttribState {
         public int vboId;
         public ByteBuffer clientPointer;
 
+        public boolean isClientSide() {
+            return enabled && clientPointer != null;
+        }
+
         public void reset() {
             enabled = false;
             size = 0;

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

@@ -1,16 +1,14 @@
-package com.gtnewhorizons.angelica.client.rendering;
+package com.gtnewhorizons.angelica.glsm.streaming;
 
 import com.gtnewhorizon.gtnhlib.client.renderer.DirectTessellator;
 import com.gtnewhorizon.gtnhlib.client.renderer.vertex.DefaultVertexFormat;
 import com.gtnewhorizon.gtnhlib.client.renderer.vertex.VertexFlags;
 import com.gtnewhorizon.gtnhlib.client.renderer.vertex.VertexFormat;
 import com.gtnewhorizons.angelica.glsm.GLStateManager;
+import com.gtnewhorizons.angelica.glsm.ITessellatorData;
 import com.gtnewhorizons.angelica.glsm.QuadConverter;
 import com.gtnewhorizons.angelica.glsm.RenderSystem;
 import com.gtnewhorizons.angelica.glsm.ffp.ShaderManager;
-import com.gtnewhorizons.angelica.glsm.streaming.OrphanStreamingBuffer;
-import com.gtnewhorizons.angelica.glsm.streaming.PersistentStreamingBuffer;
-import net.minecraft.client.renderer.Tessellator;
 import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
 import org.lwjgl.opengl.GL11;
@@ -71,42 +69,42 @@ public class TessellatorStreamingDrawer {
     /**
      * Draw the vanilla Tessellator's data using streaming VBO+VAO instead of FFP client arrays.
      */
-    public static int draw(Tessellator tess) {
-        if (!tess.isDrawing) {
+    public static int draw(ITessellatorData tess) {
+        if (!tess.isDrawing()) {
             throw new IllegalStateException("Not tesselating!");
         }
 
-        tess.isDrawing = false;
+        tess.setDrawing(false);
 
-        final int vertexCount = tess.vertexCount;
+        final int vertexCount = tess.getVertexCount();
         if (vertexCount == 0) {
-            final int result = tess.rawBufferIndex * 4;
-            tess.reset();
+            final int result = tess.getRawBufferIndex() * 4;
+            tess.angelica$reset();
             return result;
         }
 
         // Determine the optimal vertex format from the tessellator's flags
-        final int flags = VertexFlags.convertToFlags(tess.hasTexture, tess.hasColor, tess.hasNormals, tess.hasBrightness);
+        final int flags = VertexFlags.convertToFlags(tess.hasTexture(), tess.hasColor(), tess.hasNormals(), tess.hasBrightness());
         final VertexFormat format = DefaultVertexFormat.ALL_FORMATS[flags];
         final int vertexSize = format.getVertexSize();
 
         final int requiredBytes = vertexCount * vertexSize;
         ensureRepackCapacity(requiredBytes);
 
-        final long writePtr = format.writeToBuffer0(repackAddress, tess.rawBuffer, tess.rawBufferIndex);
+        final long writePtr = format.writeToBuffer0(repackAddress, tess.getRawBuffer(), tess.getRawBufferIndex());
         repackBuffer.position(0);
         repackBuffer.limit((int)(writePtr - repackAddress));
 
-        uploadAndDraw(repackBuffer, flags, format, vertexSize, tess.drawMode, vertexCount);
+        uploadAndDraw(repackBuffer, flags, format, vertexSize, tess.getDrawMode(), vertexCount);
 
         // Shrink rawBuffer if oversized
-        if (tess.rawBufferSize > 0x20000 && tess.rawBufferIndex < (tess.rawBufferSize << 3)) {
-            tess.rawBufferSize = 0x10000;
-            tess.rawBuffer = new int[tess.rawBufferSize];
+        if (tess.getRawBufferSize() > 0x20000 && tess.getRawBufferIndex() < (tess.getRawBufferSize() << 3)) {
+            tess.setRawBufferSize(0x10000);
+            tess.setRawBuffer(new int[tess.getRawBufferSize()]);
         }
 
-        final int result = tess.rawBufferIndex * 4;
-        tess.reset();
+        final int result = tess.getRawBufferIndex() * 4;
+        tess.angelica$reset();
         return result;
     }
 
@@ -128,6 +126,19 @@ public class TessellatorStreamingDrawer {
         uploadAndDraw(buffer, flags, format, vertexSize, drawMode, vertexCount);
     }
 
+    /**
+     * Upload pre-packed vertex data and draw. Public API for external batch systems.
+     * @param packedData  buffer positioned at 0 with limit set to total bytes
+     * @param drawMode    GL draw mode (GL_QUADS, GL_TRIANGLES, etc.)
+     * @param flags       vertex format flags (from VertexFlags)
+     * @param vertexCount number of vertices
+     */
+    public static void drawPacked(ByteBuffer packedData, int drawMode, int flags, int vertexCount) {
+        final VertexFormat format = DefaultVertexFormat.ALL_FORMATS[flags];
+        final int vertexSize = format.getVertexSize();
+        uploadAndDraw(packedData, flags, format, vertexSize, drawMode, vertexCount);
+    }
+
     private static String cachedDebugInfo = "Stream: not initialized";
     private static long lastDebugUpdateNanos;
     private static final long DEBUG_UPDATE_INTERVAL_NS = 500_000_000L; // 500ms
@@ -172,34 +183,6 @@ public class TessellatorStreamingDrawer {
         }
     }
 
-    /**
-     * Draw a merged batch of pre-packed vertex data from a DeferredBatchTessellator.
-     * Copies byte ranges into repackBuffer, then uploads and draws.
-     */
-    static void drawPackedBatch(DeferredBatchTessellator source,
-                                java.util.List<DeferredBatchTessellator.DrawRange> ranges,
-                                int from, int to,
-                                int totalBytes, int totalVertices,
-                                int drawMode, int flags) {
-        if (totalVertices == 0) return;
-
-        final VertexFormat format = DefaultVertexFormat.ALL_FORMATS[flags];
-        final int vertexSize = format.getVertexSize();
-
-        ensureRepackCapacity(totalBytes);
-
-        long writePos = repackAddress;
-        for (int j = from; j < to; j++) {
-            final DeferredBatchTessellator.DrawRange r = ranges.get(j);
-            source.copyRange(r.byteOffset(), r.byteLength(), writePos);
-            writePos += r.byteLength();
-        }
-        repackBuffer.position(0);
-        repackBuffer.limit(totalBytes);
-
-        uploadAndDraw(repackBuffer, flags, format, vertexSize, drawMode, totalVertices);
-    }
-
     /**
      * Upload packed vertex data to a streaming buffer and issue the draw call.
      * Tries the persistent ring buffer first, falls back to orphan buffer on overflow.
@@ -239,7 +222,11 @@ public class TessellatorStreamingDrawer {
         }
     }
 
-    private static void ensureRepackCapacity(int requiredBytes) {
+    /**
+     * Ensure the repack buffer is large enough for the given byte count.
+     * Public for use by external batch systems that need to pack data before calling {@link #drawPacked}.
+     */
+    public static void ensureRepackCapacity(int requiredBytes) {
         if (requiredBytes <= repackCapacity) return;
 
         int newCapacity = repackCapacity;
@@ -253,6 +240,16 @@ public class TessellatorStreamingDrawer {
         repackCapacity = newCapacity;
     }
 
+    /** Get the repack buffer's native address. Valid until next {@link #ensureRepackCapacity} call. */
+    public static long getRepackAddress() {
+        return repackAddress;
+    }
+
+    /** Get the repack ByteBuffer. Caller must set position/limit before passing to {@link #drawPacked}. */
+    public static ByteBuffer getRepackBuffer() {
+        return repackBuffer;
+    }
+
     private static void ensureVAO(int flags, VertexFormat format) {
         init();
 

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

@@ -596,4 +596,21 @@ class CompatShaderTransformerTest {
         assertFalse(fragResult.contains("varying"), "no 'varying' keyword in fragment");
         assertTrue(fragResult.contains("in vec2 v_TexCoord"), "varying → in in fragment");
     }
+
+    @Test
+    void testReservedWordNewIsRenamed() {
+        String src = """
+            #version 120
+            uniform sampler2D tex;
+            void main() {
+                vec4 color = texture2D(tex, vec2(0.5));
+                float new = color.r > 0.5 ? 1.0 : 0.0;
+                gl_FragColor = vec4(new, new, new, 1.0);
+            }
+            """;
+
+        String result = CompatShaderTransformer.transform(src, true);
+        assertFalse(result.matches("(?s).*\\bnew\\b(?!\\s*\\().*"), "'new' as identifier must be renamed in core profile output\n\n" + result);
+        assertTrue(result.contains("angelica_renamed_new"), "'new' should be renamed to angelica_renamed_new\n\n" + result);
+    }
 }

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

@@ -156,6 +156,108 @@ class FeedbackManagerTest {
         GLStateManager.glDeleteVertexArrays(vao);
     }
 
+    @Test
+    void testPolygonFeedback_GL2D() {
+        final FloatBuffer buf = BufferUtils.createFloatBuffer(128);
+        FeedbackManager.glFeedbackBuffer(GL11.GL_2D, buf);
+        FeedbackManager.glRenderMode(GL11.GL_FEEDBACK);
+
+        GLStateManager.getModelViewMatrix().identity();
+        GLStateManager.getProjectionMatrix().identity();
+        GLStateManager.getViewportState().setViewPort(0, 0, 800, 600);
+        GLStateManager.getViewportState().setDepthRange(0.0, 1.0);
+
+        final int vao = GL30.glGenVertexArrays();
+        GLStateManager.glBindVertexArray(vao);
+
+        final float[] verts = {
+            0f, 0f, 0f,
+            1f, 0f, 0f,
+            1f, 1f, 0f,
+            0f, 1f, 0f
+        };
+        final FloatBuffer vertBuf = BufferUtils.createFloatBuffer(verts.length);
+        vertBuf.put(verts).flip();
+
+        final int vbo = GL15.glGenBuffers();
+        GLStateManager.glBindBuffer(GL15.GL_ARRAY_BUFFER, vbo);
+        GL15.glBufferData(GL15.GL_ARRAY_BUFFER, vertBuf, GL15.GL_STATIC_DRAW);
+        GLStateManager.glVertexAttribPointer(0, 3, GL11.GL_FLOAT, false, 12, 0);
+        GLStateManager.glEnableVertexAttribArray(0);
+
+        FeedbackManager.processDrawArrays(GL11.GL_POLYGON, 0, 4);
+
+        final int count = FeedbackManager.glRenderMode(GL11.GL_RENDER);
+
+        assertEquals(10, count, "Polygon in GL_2D should produce 10 floats");
+        assertEquals(GL11.GL_POLYGON_TOKEN, buf.get(0), 0.001f);
+        assertEquals(4.0f, buf.get(1), 0.001f);
+        assertEquals(400.0f, buf.get(2), 0.01f);
+        assertEquals(300.0f, buf.get(3), 0.01f);
+        assertEquals(800.0f, buf.get(4), 0.01f);
+        assertEquals(300.0f, buf.get(5), 0.01f);
+        assertEquals(800.0f, buf.get(6), 0.01f);
+        assertEquals(600.0f, buf.get(7), 0.01f);
+        assertEquals(400.0f, buf.get(8), 0.01f);
+        assertEquals(600.0f, buf.get(9), 0.01f);
+
+        GLStateManager.glDisableVertexAttribArray(0);
+        GLStateManager.glBindVertexArray(0);
+        GL15.glDeleteBuffers(vbo);
+        GLStateManager.glDeleteVertexArrays(vao);
+    }
+
+    @Test
+    void testQuadStripFeedback_GL2D() {
+        final FloatBuffer buf = BufferUtils.createFloatBuffer(128);
+        FeedbackManager.glFeedbackBuffer(GL11.GL_2D, buf);
+        FeedbackManager.glRenderMode(GL11.GL_FEEDBACK);
+
+        GLStateManager.getModelViewMatrix().identity();
+        GLStateManager.getProjectionMatrix().identity();
+        GLStateManager.getViewportState().setViewPort(0, 0, 800, 600);
+        GLStateManager.getViewportState().setDepthRange(0.0, 1.0);
+
+        final int vao = GL30.glGenVertexArrays();
+        GLStateManager.glBindVertexArray(vao);
+
+        final float[] verts = {
+            0f, 0f, 0f,
+            0f, 1f, 0f,
+            1f, 0f, 0f,
+            1f, 1f, 0f
+        };
+        final FloatBuffer vertBuf = BufferUtils.createFloatBuffer(verts.length);
+        vertBuf.put(verts).flip();
+
+        final int vbo = GL15.glGenBuffers();
+        GLStateManager.glBindBuffer(GL15.GL_ARRAY_BUFFER, vbo);
+        GL15.glBufferData(GL15.GL_ARRAY_BUFFER, vertBuf, GL15.GL_STATIC_DRAW);
+        GLStateManager.glVertexAttribPointer(0, 3, GL11.GL_FLOAT, false, 12, 0);
+        GLStateManager.glEnableVertexAttribArray(0);
+
+        FeedbackManager.processDrawArrays(GL11.GL_QUAD_STRIP, 0, 4);
+
+        final int count = FeedbackManager.glRenderMode(GL11.GL_RENDER);
+
+        assertEquals(10, count, "Quad strip in GL_2D should produce 10 floats");
+        assertEquals(GL11.GL_POLYGON_TOKEN, buf.get(0), 0.001f);
+        assertEquals(4.0f, buf.get(1), 0.001f);
+        assertEquals(400.0f, buf.get(2), 0.01f);
+        assertEquals(300.0f, buf.get(3), 0.01f);
+        assertEquals(400.0f, buf.get(4), 0.01f);
+        assertEquals(600.0f, buf.get(5), 0.01f);
+        assertEquals(800.0f, buf.get(6), 0.01f);
+        assertEquals(600.0f, buf.get(7), 0.01f);
+        assertEquals(800.0f, buf.get(8), 0.01f);
+        assertEquals(300.0f, buf.get(9), 0.01f);
+
+        GLStateManager.glDisableVertexAttribArray(0);
+        GLStateManager.glBindVertexArray(0);
+        GL15.glDeleteBuffers(vbo);
+        GLStateManager.glDeleteVertexArrays(vao);
+    }
+
     @Test
     void testIdentityTransform_viewportMapping() {
         final FloatBuffer buf = BufferUtils.createFloatBuffer(64);

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

@@ -0,0 +1,142 @@
+package com.gtnewhorizons.angelica.glsm.redirect;
+
+import org.junit.jupiter.api.Test;
+import org.objectweb.asm.ClassWriter;
+import org.objectweb.asm.Handle;
+import org.objectweb.asm.Opcodes;
+import org.objectweb.asm.Type;
+import org.objectweb.asm.tree.ClassNode;
+import org.objectweb.asm.tree.InsnNode;
+import org.objectweb.asm.tree.InvokeDynamicInsnNode;
+import org.objectweb.asm.tree.MethodNode;
+
+import java.util.ArrayList;
+
+import static org.junit.jupiter.api.Assertions.assertDoesNotThrow;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+class GLSMRedirectorTest {
+
+    private static final String GLSM = GLSMRedirector.getTargetClassName();
+
+    private static final Handle LAMBDA_METAFACTORY = new Handle(
+            Opcodes.H_INVOKESTATIC,
+            "java/lang/invoke/LambdaMetafactory",
+            "metafactory",
+            "(Ljava/lang/invoke/MethodHandles$Lookup;Ljava/lang/String;Ljava/lang/invoke/MethodType;"
+                    + "Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodHandle;Ljava/lang/invoke/MethodType;)"
+                    + "Ljava/lang/invoke/CallSite;",
+            false);
+
+    private static ClassNode makeClassWithInvokeDynamic(Handle implHandle) {
+        final ClassNode cn = new ClassNode();
+        cn.version = Opcodes.V1_8;
+        cn.access = Opcodes.ACC_PUBLIC;
+        cn.name = "com/example/TestClass";
+        cn.superName = "java/lang/Object";
+        cn.methods = new ArrayList<>();
+
+        final MethodNode mn = new MethodNode(Opcodes.ACC_PUBLIC | Opcodes.ACC_STATIC, "test", "()V", null, null);
+        mn.instructions.add(new InvokeDynamicInsnNode(
+                "run",
+                "()Ljava/lang/Runnable;",
+                LAMBDA_METAFACTORY,
+                Type.getType("()V"),
+                implHandle,
+                Type.getType("()V")));
+        mn.instructions.add(new InsnNode(Opcodes.RETURN));
+        cn.methods.add(mn);
+
+        return cn;
+    }
+
+    private static Handle getResultHandle(ClassNode cn) {
+        final InvokeDynamicInsnNode dyn = (InvokeDynamicInsnNode) cn.methods.get(0).instructions.get(0);
+        return (Handle) dyn.bsmArgs[1];
+    }
+
+    @Test
+    void invokeDynamicGL11HandleIsRedirected() {
+        final Handle impl = new Handle(Opcodes.H_INVOKESTATIC, "org/lwjgl/opengl/GL11", "glPopMatrix", "()V", false);
+        final ClassNode cn = makeClassWithInvokeDynamic(impl);
+
+        final boolean changed = new GLSMRedirector().transformClassNode("com.example.TestClass", cn);
+
+        assertTrue(changed);
+        final Handle result = getResultHandle(cn);
+        assertEquals(GLSM, result.getOwner());
+        assertEquals("glPopMatrix", result.getName());
+        assertEquals("()V", result.getDesc());
+        assertEquals(Opcodes.H_INVOKESTATIC, result.getTag());
+    }
+
+    @Test
+    void invokeDynamicNamedClassHandleIsRedirected() {
+        final Handle impl = new Handle(Opcodes.H_INVOKESTATIC, "org/lwjgl/opengl/EXTBlendFuncSeparate", "glBlendFuncSeparateEXT", "(IIII)V", false);
+        final ClassNode cn = makeClassWithInvokeDynamic(impl);
+
+        final boolean changed = new GLSMRedirector().transformClassNode("com.example.TestClass", cn);
+
+        assertTrue(changed);
+        final Handle result = getResultHandle(cn);
+        assertEquals(GLSM, result.getOwner());
+        assertEquals("tryBlendFuncSeparate", result.getName());
+        assertEquals("(IIII)V", result.getDesc());
+    }
+
+    @Test
+    void invokeDynamicNonGLHandleIsNotTouched() {
+        final Handle impl = new Handle(Opcodes.H_INVOKESTATIC, "java/lang/System", "currentTimeMillis", "()J", false);
+        final ClassNode cn = makeClassWithInvokeDynamic(impl);
+
+        final boolean changed = new GLSMRedirector().transformClassNode("com.example.TestClass", cn);
+
+        assertFalse(changed);
+        final Handle result = getResultHandle(cn);
+        assertEquals("java/lang/System", result.getOwner());
+        assertEquals("currentTimeMillis", result.getName());
+    }
+
+    @Test
+    void invokeDynamicUnknownGLMethodIsNotTouched() {
+        final Handle impl = new Handle(Opcodes.H_INVOKESTATIC, "org/lwjgl/opengl/GL11", "glNonexistent", "()V", false);
+        final ClassNode cn = makeClassWithInvokeDynamic(impl);
+
+        final boolean changed = new GLSMRedirector().transformClassNode("com.example.TestClass", cn);
+
+        assertFalse(changed);
+        final Handle result = getResultHandle(cn);
+        assertEquals("org/lwjgl/opengl/GL11", result.getOwner());
+    }
+
+    @Test
+    void invokeDynamicGLCVariantIsRedirected() {
+        final Handle impl = new Handle(Opcodes.H_INVOKESTATIC, "org/lwjgl/opengl/GL11C", "glDrawArrays", "(III)V", false);
+        final ClassNode cn = makeClassWithInvokeDynamic(impl);
+
+        final boolean changed = new GLSMRedirector().transformClassNode("com.example.TestClass", cn);
+
+        assertTrue(changed);
+        final Handle result = getResultHandle(cn);
+        assertEquals(GLSM, result.getOwner());
+        assertEquals("glDrawArrays", result.getName());
+        assertEquals("(III)V", result.getDesc());
+    }
+
+    @Test
+    void transformedClassProducesValidBytecode() {
+        final Handle impl = new Handle(Opcodes.H_INVOKESTATIC, "org/lwjgl/opengl/GL11", "glPopMatrix", "()V", false);
+        final ClassNode cn = makeClassWithInvokeDynamic(impl);
+
+        new GLSMRedirector().transformClassNode("com.example.TestClass", cn);
+
+        final ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_MAXS);
+        assertDoesNotThrow(() -> {
+            cn.accept(cw);
+            final byte[] bytes = cw.toByteArray();
+            assertTrue(bytes.length > 0);
+        });
+    }
+}

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

@@ -68,6 +68,16 @@ public final class Lwjgl3GLRenderBackend extends RenderBackend {
         return "OpenGL (LWJGL3)";
     }
 
+    @Override
+    public boolean hasContext() {
+        try {
+            GL.getCapabilities();
+            return true;
+        } catch (IllegalStateException e) {
+            return false;
+        }
+    }
+
     @Override
     public int getPriority() { return 50; }
 

src/main/java/com/gtnewhorizons/angelica/api/GLRedirects.java

@@ -0,0 +1,118 @@
+package com.gtnewhorizons.angelica.api;
+
+import com.gtnewhorizons.angelica.glsm.redirect.GLSMRedirector;
+
+import java.util.HashMap;
+import java.util.Map;
+import java.util.TreeSet;
+import java.util.regex.Pattern;
+
+/**
+ * Public API for querying Angelica's GL call redirections.
+ * <p>
+ * Angelica's bytecode transformer redirects GL calls (e.g., {@code GL11.glPushMatrix()}) to
+ * {@link com.gtnewhorizons.angelica.glsm.GLStateManager GLStateManager} for state tracking and
+ * core profile compatibility. This works for normal Java bytecode loaded through the Forge classloader,
+ * but callers that bypass class transformation (e.g., Nashorn/script engines, reflection, MethodHandles)
+ * need to perform their own redirection.
+ * <p>
+ * This class provides the redirect mapping data and a precompiled regex pattern for transforming
+ * script source text before evaluation.
+ *
+ * <h3>Example: transforming a Nashorn script before eval</h3>
+ * Given a script that uses {@code importPackage(Packages.org.lwjgl.opengl)} and calls
+ * {@code GL11.glPushMatrix()}, the text transformation rewrites those calls before evaluation:
+ * <pre>{@code
+ * // Make GLStateManager available to the script -- either via importPackage:
+ * script = "importPackage(Packages.com.gtnewhorizons.angelica.glsm);\n" + script;
+ * // ... or via Java.type for an explicit binding:
+ * // script = "var GLStateManager = Java.type('" + GLRedirects.TARGET_CLASS + "');\n" + script;
+ *
+ * // Rewrite: GL11.glPushMatrix() -> GLStateManager.glPushMatrix()
+ * script = GLRedirects.getMethodRedirectPattern().matcher(script).replaceAll(mr -> {
+ *     String target = GLRedirects.getTargetMethodName(mr.group(0));
+ *     return target != null ? "GLStateManager." + target : mr.group(0);
+ * });
+ *
+ * engine.eval(script);
+ * }</pre>
+ */
+public final class GLRedirects {
+    /** Fully qualified name of the GLStateManager class that all methods redirect to. */
+    @SuppressWarnings("unused")
+    public static final String TARGET_CLASS = "com.gtnewhorizons.angelica.glsm.GLStateManager";
+
+    private static final String SHORT_GL_PREFIX;
+    private static final Map<String, Map<String, String>> NAMED_CLASS_SHORT_NAME_MAP;
+    private static final Map<String, String> GL_PREFIX_METHOD_REDIRECTS;
+    private static final Pattern METHOD_REDIRECT_PATTERN;
+
+    static {
+        SHORT_GL_PREFIX = buildShortGLPrefix();
+        NAMED_CLASS_SHORT_NAME_MAP = buildNamedClassShortNameMap();
+        GL_PREFIX_METHOD_REDIRECTS = GLSMRedirector.getGLPrefixMethodRedirects();
+        METHOD_REDIRECT_PATTERN = buildMethodRedirectPattern();
+    }
+
+    private GLRedirects() {}
+
+    /**
+     * Returns a precompiled pattern that matches redirected {@code ClassName.methodName} references
+     * using short (simple) class names, as they might typically appear in script text.
+     *
+     * @return compiled regex pattern
+     */
+    public static Pattern getMethodRedirectPattern() {
+        return METHOD_REDIRECT_PATTERN;
+    }
+
+    /**
+     * Looks up the GLStateManager target method name for a short-name reference.
+     *
+     * @param classAndMethod short class name and method, e.g., {@code "GL11.glPushMatrix"}
+     * @return the target method name on GLStateManager (e.g., {@code "glPushMatrix"}), or {@code null} if this reference is not redirected
+     */
+    public static String getTargetMethodName(String classAndMethod) {
+        final int dot = classAndMethod.indexOf('.');
+        if (dot < 0) return null;
+
+        final String className = classAndMethod.substring(0, dot);
+        final String methodName = classAndMethod.substring(dot + 1);
+
+        final Map<String, String> classRedirects = NAMED_CLASS_SHORT_NAME_MAP.get(className);
+        if (classRedirects != null) {
+            return classRedirects.get(methodName);
+        }
+
+        if (className.startsWith(SHORT_GL_PREFIX)) {
+            return GL_PREFIX_METHOD_REDIRECTS.get(methodName);
+        }
+
+        return null;
+    }
+
+    private static String buildShortGLPrefix() {
+        final String glPrefix = GLSMRedirector.getGLPrefix();
+        return glPrefix.substring(glPrefix.lastIndexOf('/') + 1);
+    }
+
+    private static Map<String, Map<String, String>> buildNamedClassShortNameMap() {
+        final Map<String, Map<String, String>> named = new HashMap<>();
+        for (final var entry : GLSMRedirector.getNamedClassMethodRedirects().entrySet()) {
+            final String internalName = entry.getKey();
+            final String shortName = internalName.substring(internalName.lastIndexOf('/') + 1);
+            named.put(shortName, entry.getValue());
+        }
+        return named;
+    }
+
+    private static Pattern buildMethodRedirectPattern() {
+        final TreeSet<String> alternatives = new TreeSet<>();
+        alternatives.add(Pattern.quote(SHORT_GL_PREFIX) + "\\w+");
+        for (final String shortName : NAMED_CLASS_SHORT_NAME_MAP.keySet()) {
+            alternatives.add(Pattern.quote(shortName));
+        }
+        final String classAlt = String.join("|", alternatives);
+        return Pattern.compile("\\b(" + classAlt + ")\\.\\w+\\b");
+    }
+}

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

@@ -2,6 +2,7 @@ package com.gtnewhorizons.angelica.client.rendering;
 
 import com.github.bsideup.jabel.Desugar;
 import com.gtnewhorizon.gtnhlib.client.renderer.DirectTessellator;
+import com.gtnewhorizon.gtnhlib.client.renderer.ITessellatorInstance;
 import com.gtnewhorizon.gtnhlib.client.renderer.vertex.VertexFlags;
 import com.gtnewhorizon.gtnhlib.client.renderer.vertex.VertexFormat;
 import com.gtnewhorizons.angelica.glsm.GLStateManager;
@@ -33,10 +34,30 @@ class DeferredBatchTessellator extends DirectTessellator {
     private final Vector3f scratch = new Vector3f();
     private Matrix4fc currentTransform;
 
+    private Tessellator parentTessellator;
+    private boolean inIntercept;
+
     DeferredBatchTessellator(ByteBuffer buffer) {
         super(buffer, false); // deleteAfter=false: keep buffer across resets for reuse
     }
 
+    void setParentTessellator(Tessellator parent) {
+        this.parentTessellator = parent;
+    }
+
+    @Override
+    public int draw() {
+        if (!inIntercept) {
+            final Tessellator parent = parentTessellator;
+            if (parent != null && parent.isDrawing) {
+                interceptDraw(parent);
+                ((ITessellatorInstance) parent).discard();
+            }
+        }
+        isDrawing = false;
+        return 0;
+    }
+
     @Override
     protected long writeVertexData(VertexFormat format, int[] rawBuffer, int rawBufferIndex) {
         if (currentTransform != null) {
@@ -53,27 +74,32 @@ class DeferredBatchTessellator extends DirectTessellator {
 
     @Override
     protected int interceptDraw(Tessellator tess) {
-        // Compute delta: if current MV differs from default, pre-transform vertices
-        final Matrix4f currentMV = GLStateManager.getModelViewMatrix();
-        if (!currentMV.equals(defaultModelview)) {
-            defaultModelviewInverse.mul(currentMV, deltaMatrix);
-            this.currentTransform = deltaMatrix;
-        } else {
-            this.currentTransform = null;
+        inIntercept = true;
+        try {
+            // Compute delta: if current MV differs from default, pre-transform vertices
+            final Matrix4f currentMV = GLStateManager.getModelViewMatrix();
+            if (!currentMV.equals(defaultModelview)) {
+                defaultModelviewInverse.mul(currentMV, deltaMatrix);
+                this.currentTransform = deltaMatrix;
+            } else {
+                this.currentTransform = null;
+            }
+
+            final int byteOffsetBefore = bufferLimit();
+            final int vertCount = tess.vertexCount;
+            final int drawMode = tess.drawMode;
+            final int flags = VertexFlags.convertToFlags(tess.hasTexture, tess.hasColor, tess.hasNormals, tess.hasBrightness);
+            final long stateKey = DeferredDrawBatcher.captureStateKey();
+
+            final int result = super.interceptDraw(tess); // repacks int[] -> ByteBuffer + transforms if vertexTransform set
+
+            final int byteOffsetAfter = bufferLimit();
+            ranges.add(new DrawRange(stateKey, byteOffsetBefore, byteOffsetAfter - byteOffsetBefore, vertCount, drawMode, flags));
+            this.currentTransform = null; // clear for next draw
+            return result;
+        } finally {
+            inIntercept = false;
         }
-
-        final int byteOffsetBefore = bufferLimit();
-        final int vertCount = tess.vertexCount;
-        final int drawMode = tess.drawMode;
-        final int flags = VertexFlags.convertToFlags(tess.hasTexture, tess.hasColor, tess.hasNormals, tess.hasBrightness);
-        final long stateKey = DeferredDrawBatcher.captureStateKey();
-
-        final int result = super.interceptDraw(tess); // repacks int[] → ByteBuffer + transforms if vertexTransform set
-
-        final int byteOffsetAfter = bufferLimit();
-        ranges.add(new DrawRange(stateKey, byteOffsetBefore, byteOffsetAfter - byteOffsetBefore, vertCount, drawMode, flags));
-        this.currentTransform = null; // clear for next draw
-        return result;
     }
 
     List<DrawRange> getRanges() { return ranges; }
@@ -86,6 +112,7 @@ class DeferredBatchTessellator extends DirectTessellator {
 
     @Override
     protected void onRemovedFromStack() {
+        parentTessellator = null;
         clearRanges();
         super.onRemovedFromStack(); // calls reset(), keeps baseBuffer (deleteAfter=false)
     }

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

@@ -2,7 +2,9 @@ package com.gtnewhorizons.angelica.client.rendering;
 
 import com.gtnewhorizon.gtnhlib.client.renderer.TessellatorManager;
 import com.gtnewhorizons.angelica.glsm.GLStateManager;
+import com.gtnewhorizons.angelica.glsm.streaming.TessellatorStreamingDrawer;
 import lombok.Getter;
+import net.minecraft.client.renderer.Tessellator;
 import org.lwjgl.opengl.GL11;
 
 import java.util.Comparator;
@@ -37,6 +39,7 @@ public class DeferredDrawBatcher {
             batchTessellator = new DeferredBatchTessellator(memAlloc(INITIAL_BUFFER_SIZE));
         }
         batchTessellator.clearRanges();
+        batchTessellator.setParentTessellator(Tessellator.instance);
         batchTessellator.snapshotDefaultModelview();
         TessellatorManager.startCapturingDirect(batchTessellator);
     }
@@ -106,12 +109,33 @@ public class DeferredDrawBatcher {
                     break;
             }
 
-            TessellatorStreamingDrawer.drawPackedBatch(batchTessellator, ranges, i, subEnd, totalBytes, totalVertices, drawMode, flags);
+            drawPackedBatch(batchTessellator, ranges, i, subEnd, totalBytes, totalVertices, drawMode, flags);
 
             i = subEnd;
         }
     }
 
+    /**
+     * Pack ranges from a DeferredBatchTessellator into the streaming drawer's repack buffer
+     * and issue a single draw call for the merged batch.
+     */
+    private static void drawPackedBatch(DeferredBatchTessellator source, List<DeferredBatchTessellator.DrawRange> ranges, int from, int to, int totalBytes, int totalVertices, int drawMode, int flags) {
+        if (totalVertices == 0) return;
+
+        TessellatorStreamingDrawer.ensureRepackCapacity(totalBytes);
+        long writePos = TessellatorStreamingDrawer.getRepackAddress();
+        for (int j = from; j < to; j++) {
+            final DeferredBatchTessellator.DrawRange r = ranges.get(j);
+            source.copyRange(r.byteOffset(), r.byteLength(), writePos);
+            writePos += r.byteLength();
+        }
+        final java.nio.ByteBuffer buf = TessellatorStreamingDrawer.getRepackBuffer();
+        buf.position(0);
+        buf.limit(totalBytes);
+
+        TessellatorStreamingDrawer.drawPacked(buf, drawMode, flags, totalVertices);
+    }
+
     /**
      * Pack current GLSM state into a long key for grouping.
      * Layout: [tex1En:1][tex0En:1][textureId:20][srcRgb:12][dstRgb:12][blendEnabled:1][depthMask:1] = 48 bits

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

@@ -1,10 +1,8 @@
 package com.gtnewhorizons.angelica.client.rendering;
 
-import com.gtnewhorizons.angelica.glsm.GLStateManager;
-import com.gtnewhorizons.angelica.glsm.RenderSystem;
-import com.gtnewhorizons.angelica.glsm.hooks.GLSMHooks;
 import it.unimi.dsi.fastutil.ints.Int2ObjectMap;
 import it.unimi.dsi.fastutil.ints.Int2ObjectOpenHashMap;
+import net.coderbot.iris.gl.state.StateUpdateNotifiers;
 import net.minecraft.client.renderer.texture.AbstractTexture;
 import org.jetbrains.annotations.Nullable;
 
@@ -15,11 +13,15 @@ public class TextureTracker {
      */
 
     public static final TextureTracker INSTANCE = new TextureTracker();
-
+    
+    private static Runnable bindTextureListener;
+    
+    static {
+        StateUpdateNotifiers.bindTextureNotifier = listener -> bindTextureListener = listener;
+    }
+    
     private final Int2ObjectMap<AbstractTexture> textures = new Int2ObjectOpenHashMap<>();
 
-    private boolean lockBindCallback;
-
     private TextureTracker() {
     }
 
@@ -31,23 +33,13 @@ public class TextureTracker {
     public AbstractTexture getTexture(int id) {
         return textures.get(id);
     }
-
-    public void onBindTexture(int id) {
-        if (lockBindCallback) {
-            return;
-        }
-        if (GLStateManager.getActiveTextureUnit() == 0) {
-            lockBindCallback = true;
-            if (GLSMHooks.TEXTURE_BIND.hasListeners()) {
-                GLSMHooks.textureBindEvent.textureId = id;
-                GLSMHooks.TEXTURE_BIND.post(GLSMHooks.textureBindEvent);
-            }
-            // Reset texture state
-            RenderSystem.bindTextureToUnit(0, id);
-            lockBindCallback = false;
+    
+    public void onBindTexture() {
+        if (bindTextureListener != null) {
+            bindTextureListener.run();
         }
     }
-
+    
     public void onDeleteTexture(int id) {
         textures.remove(id);
     }

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

@@ -25,6 +25,7 @@ public class ModStatus {
     public static boolean isThaumicHorizonsLoaded;
     public static boolean isBaublesLoaded;
     public static boolean isFluidLoggedLoaded;
+    public static boolean isBOPLoaded;
 
     public static void preInit() {
         if (Loader.isModLoaded("backhand")) {
@@ -45,6 +46,7 @@ public class ModStatus {
         isFluidLoggedLoaded = Loader.isModLoaded("fluidlogged");
 
         isHoloInventoryLoaded = Loader.isModLoaded("holoinventory");
+        isBOPLoaded = Loader.isModLoaded("BiomesOPlenty");
 
         // remove compat with original release of BG2
         if (isBattlegearLoaded){

src/main/java/com/gtnewhorizons/angelica/compat/mojang/Camera.java

@@ -26,12 +26,11 @@ public class Camera {
 
     private float pitch;
     private float yaw;
-    private EntityLivingBase entity;
+    private boolean isSleeping;
     private boolean thirdPerson;
     private float partialTicks;
 
-    private Camera() {
-    }
+    private Camera() {}
 
     /**
      * Updates the camera position and orientation based on the current entity and partial ticks.
@@ -41,7 +40,7 @@ public class Camera {
      */
     public void update(EntityLivingBase entity, float partialTicks) {
         this.partialTicks = partialTicks;
-        this.entity = entity;
+        this.isSleeping = entity.isPlayerSleeping();
 
         // Entity position (interpolated, at eye level)
         final double entityX = entity.lastTickPosX + (entity.posX - entity.lastTickPosX) * partialTicks;

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

@@ -235,6 +235,11 @@ public class AngelicaConfig {
     @Config.DefaultBoolean(false)
     public static boolean enableHardcodedCustomUniforms;
 
+    @Config.Comment("Modern MC_VERSION to try if shader pack has no 1.7.10 section. 0 = default (260101)")
+    @Config.DefaultInt(0)
+    @Config.RangeInt(min = 0)
+    public static int modernFallbackMcVersion;
+
     @Config.Comment("Define IS_IRIS in shader macros.")
     @Config.DefaultBoolean(true)
     public static boolean defineIsIris;
@@ -262,6 +267,11 @@ public class AngelicaConfig {
         @Config.DefaultBoolean(true)
         @Config.RequiresMcRestart
         public boolean narrowAlfheim;
+
+        @Config.Comment("Narrow Ears transformer exclusions to allow GL redirection")
+        @Config.DefaultBoolean(true)
+        @Config.RequiresMcRestart
+        public boolean narrowEars;
     }
 
     @Config.Comment("Renders chunks before neighbors are ready. Improves loading at render distance edges, useful for low render distance servers.")

src/main/java/com/gtnewhorizons/angelica/iris/IrisGLSMBridge.java

@@ -1,5 +1,6 @@
 package com.gtnewhorizons.angelica.iris;
 
+import com.gtnewhorizons.angelica.client.rendering.TextureTracker;
 import com.gtnewhorizons.angelica.glsm.hooks.DeferredAlphaHandler;
 import com.gtnewhorizons.angelica.glsm.hooks.DeferredBlendHandler;
 import com.gtnewhorizons.angelica.glsm.hooks.DeferredDepthColorHandler;
@@ -10,6 +11,7 @@ import net.coderbot.iris.gl.blending.AlphaTestStorage;
 import net.coderbot.iris.gl.blending.BlendModeStorage;
 import net.coderbot.iris.gl.blending.DepthColorStorage;
 import net.coderbot.iris.gl.program.ProgramUniforms;
+import net.coderbot.iris.gl.state.StateUpdateNotifiers;
 import net.coderbot.iris.pipeline.DeferredWorldRenderingPipeline;
 import net.coderbot.iris.pipeline.WorldRenderingPipeline;
 import net.coderbot.iris.samplers.IrisSamplers;
@@ -17,7 +19,21 @@ import net.coderbot.iris.texture.pbr.PBRTextureManager;
 import net.coderbot.iris.vertices.ImmediateState;
 
 public class IrisGLSMBridge {
-
+    
+    private static Runnable blendFuncListener = null;
+    private static Runnable fogModeListener = null;
+    private static Runnable fogStartListener = null;
+    private static Runnable fogEndListener = null;
+    private static Runnable fogDensityListener = null;
+    
+    static {
+        StateUpdateNotifiers.blendFuncNotifier = listener -> blendFuncListener = listener;
+        StateUpdateNotifiers.fogModeNotifier = listener -> fogModeListener = listener;
+        StateUpdateNotifiers.fogStartNotifier = listener -> fogStartListener = listener;
+        StateUpdateNotifiers.fogEndNotifier = listener -> fogEndListener = listener;
+        StateUpdateNotifiers.fogDensityNotifier = listener -> fogDensityListener = listener;
+    }
+    
     public static void register() {
         IrisSamplers.initRenderer();
         GLSMHooks.blendHandler = new DeferredBlendHandler() {
@@ -75,9 +91,25 @@ public class IrisGLSMBridge {
                 DepthColorStorage.deferColorMask(r, g, b, a);
             }
         };
-
+        
+        GLSMHooks.BLEND_FUNC_CHANGE.addListener(event -> {
+            if (Iris.enabled) {
+                if (blendFuncListener != null) blendFuncListener.run();
+            }
+        });
+        
+        GLSMHooks.FOG_STATE_CHANGE.addListener(event -> {
+            if (Iris.enabled) {
+                if (fogModeListener != null) fogModeListener.run();
+                if (fogStartListener != null) fogStartListener.run();
+                if (fogEndListener != null) fogEndListener.run();
+                if (fogDensityListener != null) fogDensityListener.run();
+            }
+        });
+        
         GLSMHooks.TEXTURE_BIND.addListener(event -> {
             if (Iris.enabled) {
+                TextureTracker.INSTANCE.onBindTexture();
                 final WorldRenderingPipeline pipeline = Iris.getPipelineManager().getPipelineNullable();
                 if (pipeline != null) {
                     pipeline.onBindTexture(event.textureId);

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

@@ -8,6 +8,8 @@ import com.gtnewhorizon.gtnhmixins.builders.ITransformers;
 import com.gtnewhorizons.angelica.config.AngelicaConfig;
 import com.gtnewhorizons.angelica.config.CompatConfig;
 import com.gtnewhorizons.angelica.config.FontConfig;
+import com.gtnewhorizons.angelica.glsm.loading.DependencyVerifier;
+import com.gtnewhorizons.angelica.glsm.loading.EcosystemNarrowRules;
 import com.gtnewhorizons.angelica.loading.fml.compat.CompatHandlers;
 import com.gtnewhorizons.angelica.mixins.Mixins;
 import com.gtnewhorizons.retrofuturabootstrap.SharedConfig;
@@ -91,30 +93,25 @@ public final class AngelicaClientTweaker implements IFMLLoadingPlugin, IEarlyMix
             .findFirst()
             .orElse(null);
         if (handle != null) {
-            handle.exclusions().add("org.embeddedt.embeddium");
-            handle.exclusions().add("org.taumc.celeritas");
-            handle.exclusions().add("com.mitchej123.lwjgl.lwjgl3");
-            handle.exclusions().add("com.mitchej123.glsm");
-            handle.exclusions().add("com.gtnewhorizons.angelica.lwjgl3");
+            for (String exclusion : EcosystemNarrowRules.LWJGL3IFY_EXCLUSIONS_SHARED) {
+                handle.exclusions().add(exclusion);
+            }
             handle.exclusions().add("com.gtnewhorizons.angelica.vulkan");
         }
     }
 
     private static void verifyDependencies() {
-        // Check for fastutil (bundled with GTNHLib since 0.2.1)
-        if (AngelicaTweaker.class.getResource("/it/unimi/dsi/fastutil/ints/Int2ObjectMap.class") == null) {
-            throw new RuntimeException("Missing dependency: Angelica requires GTNHLib! Download: https://modrinth.com/mod/gtnhlib");
-        }
-
-        // Check for PrimitiveExtractor/cel.model classes (added in GTNHLib 0.8.21)
-        if (AngelicaTweaker.class.getResource("/com/gtnewhorizon/gtnhlib/client/renderer/PrimitiveExtractor.class") == null) {
-            throw new RuntimeException("GTNHLib is outdated: Angelica requires GTNHLib 0.8.21 or newer! Download: https://modrinth.com/mod/gtnhlib");
-        }
-
-        // Check for jvmdowngrader stubs (bundled with GTNHLib since 0.9.0)
-        if (AngelicaTweaker.class.getResource("/xyz/wagyourtail/jvmdg/exc/MissingStubError.class") == null) {
-            throw new RuntimeException("GTNHLib is outdated: Angelica requires GTNHLib 0.9.0 or newer! Download: https://modrinth.com/mod/gtnhlib");
-        }
+        DependencyVerifier.verify(AngelicaTweaker.class, List.of(
+            new DependencyVerifier.Check(
+                "/it/unimi/dsi/fastutil/ints/Int2ObjectMap.class",
+                "Missing dependency: Angelica requires GTNHLib! Download: https://modrinth.com/mod/gtnhlib"),
+            new DependencyVerifier.Check(
+                "/com/gtnewhorizon/gtnhlib/client/renderer/PrimitiveExtractor.class",
+                "GTNHLib is outdated: Angelica requires GTNHLib 0.8.21 or newer! Download: https://modrinth.com/mod/gtnhlib"),
+            new DependencyVerifier.Check(
+                "/xyz/wagyourtail/jvmdg/exc/MissingStubError.class",
+                "GTNHLib is outdated: Angelica requires GTNHLib 0.9.0 or newer! Download: https://modrinth.com/mod/gtnhlib")
+        ));
     }
 
     @Override
@@ -152,6 +149,7 @@ public final class AngelicaClientTweaker implements IFMLLoadingPlugin, IEarlyMix
             narrowTransformerConfig("Xaeros", AngelicaConfig.transformerCompat.narrowXaeros);
             narrowTransformerConfig("AdvancedLightsabers", AngelicaConfig.transformerCompat.narrowAdvancedLightsabers);
             narrowTransformerConfig("Alfheim", AngelicaConfig.transformerCompat.narrowAlfheim);
+            narrowTransformerConfig("Ears", AngelicaConfig.transformerCompat.narrowEars);
 
             tweaks.add("com.gtnewhorizons.angelica.loading.fml.tweakers.IncompatibleModsDisablerTweaker");
             if (AngelicaConfig.enableHudCaching) {

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

@@ -1,10 +1,8 @@
 package com.gtnewhorizons.angelica.loading.fml.transformers;
 
-import com.gtnewhorizons.angelica.loading.shared.transformers.AngelicaRedirector;
+import com.gtnewhorizons.angelica.glsm.loading.EarlyRedirectorCore;
+import com.gtnewhorizons.angelica.glsm.loading.EcosystemNarrowRules;
 import net.minecraft.launchwrapper.IClassTransformer;
-import org.objectweb.asm.ClassReader;
-import org.objectweb.asm.ClassWriter;
-import org.objectweb.asm.tree.ClassNode;
 
 /**
  * A scoped redirector that only transforms classes from known-misbehaving (core)mod packages.
@@ -13,52 +11,20 @@ import org.objectweb.asm.tree.ClassNode;
  * Those classes get missed by the late-registered {@link AngelicaRedirectorTransformer}, so their
  * GL calls permanently bypass GLSM.
  * <p>
- * This transformer is registered in the {@code AngelicaTweaker} constructor (before any
- * coremod's {@code injectData}) and is removed by {@code AngelicaLateTweaker} once the
- * full redirector is in its proper post-mixin position.
- * <p>
- * The mixin service will add this to its delegation list, but it no-ops on game classes
- * since it only targets specific mod packages.
+ * Registered in {@code AngelicaClientTweaker} constructor. Removed by {@code AngelicaLateTweaker}
+ * once the full redirector is in its proper post-mixin position.
+ *
+ * @see EcosystemNarrowRules#EARLY_REDIRECTOR_TARGETS
  */
 public class EarlyRedirectorTransformer implements IClassTransformer {
 
-    private static final String[] TARGET_PACKAGES = {
-        "cn.tesseract.mycelium.",
-    };
-
-    private final AngelicaRedirector inner = new AngelicaRedirector();
-    private final String[] exclusions = inner.getTransformerExclusions();
+    private final EarlyRedirectorCore impl = new EarlyRedirectorCore(
+        "com.gtnewhorizons.angelica.lwjgl3.",
+        "com.gtnewhorizons.angelica.transform"
+    );
 
     @Override
     public byte[] transform(String name, String transformedName, byte[] basicClass) {
-        if (basicClass == null) return null;
-
-        boolean targeted = false;
-        for (String pkg : TARGET_PACKAGES) {
-            if (transformedName.startsWith(pkg)) {
-                targeted = true;
-                break;
-            }
-        }
-        if (!targeted) return basicClass;
-
-        for (String exclusion : exclusions) {
-            if (transformedName.startsWith(exclusion)) return basicClass;
-        }
-
-        if (!inner.shouldTransform(basicClass)) {
-            return basicClass;
-        }
-
-        final ClassReader cr = new ClassReader(basicClass);
-        final ClassNode cn = new ClassNode();
-        cr.accept(cn, 0);
-        final boolean changed = inner.transformClassNode(transformedName, cn);
-        if (changed) {
-            final ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_MAXS);
-            cn.accept(cw);
-            return cw.toByteArray();
-        }
-        return basicClass;
+        return impl.transform(transformedName, basicClass);
     }
 }

src/main/java/com/gtnewhorizons/angelica/loading/fml/tweakers/AngelicaLateTweaker.java

@@ -1,5 +1,7 @@
 package com.gtnewhorizons.angelica.loading.fml.tweakers;
 
+import com.gtnewhorizons.angelica.glsm.loading.EcosystemNarrowRules;
+import com.gtnewhorizons.angelica.glsm.loading.TransformerNarrower;
 import cpw.mods.fml.relauncher.FMLRelaunchLog;
 import net.minecraft.launchwrapper.IClassTransformer;
 import net.minecraft.launchwrapper.ITweaker;
@@ -27,8 +29,6 @@ public class AngelicaLateTweaker implements ITweaker {
 
     /**
      * Reduces overly broad transformer exclusions that prevent AngelicaRedirector from doing its job.
-     *
-     * Looking at you, DragonAPI.
      */
     @SuppressWarnings("unchecked")
     private static void narrowTransformerExclusions(LaunchClassLoader classLoader) {
@@ -37,73 +37,14 @@ public class AngelicaLateTweaker implements ITweaker {
             exceptionsField.setAccessible(true);
             final Set<String> exceptions = (Set<String>) exceptionsField.get(classLoader);
 
-            if (narrowEnabled("DragonAPI") && exceptions.remove("Reika.DragonAPI.ASM")) {
-                // Re-add non-GL classes; ASMCallsClient and utility classes with GL calls are left exposed
-                exceptions.add("Reika.DragonAPI.ASM.Patchers");
-                exceptions.add("Reika.DragonAPI.ASM.Profiling");
-                exceptions.add("Reika.DragonAPI.ASM.APIStripper");
-                exceptions.add("Reika.DragonAPI.ASM.ClassReparenter");
-                exceptions.add("Reika.DragonAPI.ASM.DependentMethodStripper");
-                exceptions.add("Reika.DragonAPI.ASM.DragonAPIClassTransformer");
-                exceptions.add("Reika.DragonAPI.ASM.FMLItemBlockPatch");
-                exceptions.add("Reika.DragonAPI.ASM.FluidNamePatch");
-                exceptions.add("Reika.DragonAPI.ASM.InterfaceInjector");
-                exceptions.add("Reika.DragonAPI.ASM.SpecialBiomePlacement");
-                exceptions.add("Reika.DragonAPI.ASM.StructureLootHooks");
-                FMLRelaunchLog.info("[Angelica] Narrowed Reika.DragonAPI.ASM transformer exclusion to allow GL redirection");
-            }
+            TransformerNarrower.narrow(exceptions, Launch.blackboard, "angelica", "Angelica",
+                EcosystemNarrowRules.ALL);
 
-            if (narrowEnabled("Xaeros")) {
-                if (exceptions.remove("xaero.common.core")) {
-                    exceptions.add("xaero.common.core.transformer");
-                    FMLRelaunchLog.info("[Angelica] Narrowed xaero.common.core transformer exclusion to allow GL redirection");
-                }
-                if (exceptions.remove("xaero.map.core")) {
-                    exceptions.add("xaero.map.core.transformer");
-                    FMLRelaunchLog.info("[Angelica] Narrowed xaero.map.core transformer exclusion to allow GL redirection");
-                }
-            }
-
-            if (narrowEnabled("AdvancedLightsabers") && exceptions.remove("com.fiskmods.lightsabers.asm")) {
-                exceptions.add("com.fiskmods.lightsabers.asm.ALLoadingPlugin");
-                exceptions.add("com.fiskmods.lightsabers.asm.ASMHooks");
-                exceptions.add("com.fiskmods.lightsabers.asm.transformers");
-                FMLRelaunchLog.info("[Angelica] Narrowed com.fiskmods.lightsabers.asm transformer exclusion to allow GL redirection");
-            }
-
-            if (narrowEnabled("Alfheim") && exceptions.remove("alfheim.common.core.asm.hook")) {
-                exceptions.add("alfheim.common.core.asm.hook.AlfheimFieldHookHandler");
-                exceptions.add("alfheim.common.core.asm.hook.AlfheimHPHooks");
-                exceptions.add("alfheim.common.core.asm.hook.Botania18AndUpBackport");
-                exceptions.add("alfheim.common.core.asm.hook.ElementalDamageAdapter");
-
-                exceptions.add("alfheim.common.core.asm.hook.integration");
-
-                exceptions.add("alfheim.common.core.asm.hook.extender.FurnaceExtender");
-                exceptions.add("alfheim.common.core.asm.hook.extender.ItemAuraRingExtender");
-                exceptions.add("alfheim.common.core.asm.hook.extender.ItemLensExtender");
-                exceptions.add("alfheim.common.core.asm.hook.extender.ItemTwigWandExtender");
-                exceptions.add("alfheim.common.core.asm.hook.extender.LightRelayExtender");
-                exceptions.add("alfheim.common.core.asm.hook.extender.PureDaisyExtender");
-                exceptions.add("alfheim.common.core.asm.hook.extender.QuartzExtender");
-                exceptions.add("alfheim.common.core.asm.hook.extender.RelicHooks");
-                exceptions.add("alfheim.common.core.asm.hook.extender.SparkExtender");
-
-                exceptions.add("alfheim.common.core.asm.hook.fixes.BotaniaGlowingRenderFixes");
-                exceptions.add("alfheim.common.core.asm.hook.fixes.CorporeaInputFix");
-                exceptions.add("alfheim.common.core.asm.hook.fixes.GodAttributesHooks");
-                exceptions.add("alfheim.common.core.asm.hook.fixes.RecipeAncientWillsFix");
-                FMLRelaunchLog.info("[Angelica] Narrowed alfheim.common.core.asm.hook transformer exclusion to allow GL redirection");
-            }
         } catch (Exception e) {
             FMLRelaunchLog.warning("[Angelica] Failed to narrow transformer exclusions: %s", e.getMessage());
         }
     }
 
-    private static boolean narrowEnabled(String mod) {
-        return !Boolean.FALSE.equals(Launch.blackboard.get("angelica.narrow." + mod));
-    }
-
     @Override
     public String getLaunchTarget() {
         return null;

src/main/java/com/gtnewhorizons/angelica/loading/rfb/AngelicaRfbPlugin.java

@@ -15,6 +15,7 @@ public class AngelicaRfbPlugin implements RfbPlugin {
     @Override
     public void onConstruction(@NotNull PluginContext ctx) {
         Launch.blackboard.put("angelica.rfbPluginLoaded", Boolean.TRUE);
+        Launch.classLoader.addClassLoaderExclusion("com.gtnewhorizons.angelica.glsm.redirect.");
     }
 
     @Override

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

@@ -37,7 +37,14 @@ public enum Mixins implements IMixins {
             , "angelica.MixinMinecraft_FrameHook"
             , "angelica.MixinMinecraftServer"
             , "angelica.bugfixes.MixinItemRenderer_EdgeDepth"
+            , "angelica.bugfixes.MixinModelCreeper_AuraBodyInflate"
+            , "angelica.bugfixes.MixinModelWither_ArmorCentering"
+            , "angelica.bugfixes.MixinRenderBlocks_CrossedSquaresNormal"
+            , "angelica.bugfixes.MixinRenderCreeper_AuraDepth"
+            , "angelica.bugfixes.MixinRenderGlobal_DeferredEntityOverlay"
             , "angelica.bugfixes.MixinRenderGlobal_DestroyBlock"
+            , "angelica.bugfixes.MixinRendererLivingEntity_DeferredEntityOverlay"
+            , "angelica.bugfixes.MixinRenderWither_ArmorCentering"
             , "angelica.bugfixes.MixinRendererLivingEntity_EyeDepth"
             , "angelica.debug.MixinMinecraft_FPSCap"
             , "angelica.ffp.MixinTessellator_CoreProfile"
@@ -237,6 +244,7 @@ public enum Mixins implements IMixins {
         .setApplyIf(() -> AngelicaConfig.enableIris)
         .addClientMixins(
               "shaders.MixinDroppedItemGlintEdges"
+            , "shaders.MixinHeldItemGlintEdges"
             , "shaders.MixinEntityPickupFX"
             , "shaders.MixinEntityRenderer"
             , "shaders.MixinGuiIngameForge"
@@ -249,6 +257,7 @@ public enum Mixins implements IMixins {
             , "shaders.MixinRenderEntityFlame"
             , "shaders.MixinRendererLivingEntity"
             , "shaders.MixinRenderGlobal"
+            , "shaders.AccessorEntityHorse"
             , "shaders.MixinRenderHorse"
             , "shaders.MixinRenderItem"
             , "shaders.MixinRenderNameTag"

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

@@ -1,5 +1,6 @@
 package com.gtnewhorizons.angelica.proxy;
 
+import biomesoplenty.api.content.BOPCBlocks;
 import com.google.common.base.Objects;
 import com.gtnewhorizon.gtnhlib.client.model.loading.ModelRegistry;
 import com.gtnewhorizon.gtnhlib.client.renderer.vao.VAOManager;
@@ -85,6 +86,7 @@ public final class ClientProxy extends CommonProxy {
     private final Minecraft mc = Minecraft.getMinecraft();
     private final FrametimeGraph frametimeGraph = new FrametimeGraph();
     private final TPSGraph tpsGraph = new TPSGraph();
+    public static Block bopGrass;
 
     public static SodiumGameOptions options() {
         if (CONFIG == null) {
@@ -182,6 +184,9 @@ public final class ClientProxy extends CommonProxy {
                 LOGGER.error("Could not replace LOTR handle render code with thread safe version");
             }
         }
+        if(ModStatus.isBOPLoaded) {
+            bopGrass = BOPCBlocks.newBopGrass;
+        }
     }
 
     float lastIntegratedTickTime;

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

@@ -0,0 +1,215 @@
+package com.gtnewhorizons.angelica.rendering;
+
+import com.gtnewhorizons.angelica.glsm.GLStateManager;
+import lombok.Getter;
+import net.coderbot.iris.layer.GbufferPrograms;
+import net.coderbot.iris.uniforms.CapturedRenderingState;
+import net.coderbot.iris.uniforms.EntityIdHelper;
+import net.minecraft.client.renderer.OpenGlHelper;
+import net.minecraft.client.renderer.entity.RendererLivingEntity;
+import net.minecraft.entity.EntityLivingBase;
+import org.lwjgl.BufferUtils;
+import org.lwjgl.opengl.GL11;
+
+import java.nio.FloatBuffer;
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * Defers entity overlay rendering (auras, armor effects, etc.) to after all entities have been drawn.
+ * This lets us fix z-fighting between overlay's own coplanar faces by disabling the depth mask,
+ * and ensures the overlay composites correctly on top of all opaque geometry.
+ *
+ * Used by both the charged creeper aura and the Wither armor overlay.
+ *
+ * The deferred render replays shouldRenderPass on the original renderer instance so that any
+ * mod mixins targeting that method still fire during the deferred pass.
+ */
+public class DeferredEntityOverlay {
+
+    @FunctionalInterface
+    public interface ShouldRenderPassFn {
+        int invoke(EntityLivingBase entity, int pass, float partialTick);
+    }
+
+    private static final int INITIAL_CAPACITY = 4;
+    private static final List<DeferredEntry> deferred = new ArrayList<>(INITIAL_CAPACITY);
+    private static final List<DeferredEntry> pool = new ArrayList<>(INITIAL_CAPACITY);
+
+    private static final FloatBuffer MATRIX_BUF = BufferUtils.createFloatBuffer(16);
+
+    // Set by the shouldRenderPass inject, consumed by the doRender WrapOperation.
+    @Getter
+    private static boolean overlayPassActive = false;
+
+    // Set during deferred flush to prevent re-deferring when shouldRenderPass is replayed.
+    @Getter
+    private static boolean replaying = false;
+
+    // Pending context from the shouldRenderPass inject, consumed by deferRender.
+    private static ShouldRenderPassFn pendingShouldRenderPass;
+    private static RendererLivingEntity pendingRenderer;
+    private static EntityLivingBase pendingEntity;
+    private static float pendingPartialTick;
+
+    /**
+     * Called from shouldRenderPass HEAD injects. Marks that the upcoming renderPassModel.render()
+     * should be deferred. If a previous mark was not consumed (shouldRenderPass returned <= 0,
+     * so render() was never called).
+     */
+    public static void markOverlayPass(ShouldRenderPassFn shouldRenderPass, RendererLivingEntity renderer,
+                                    EntityLivingBase entity, float partialTick) {
+        overlayPassActive = true;
+        pendingShouldRenderPass = shouldRenderPass;
+        pendingRenderer = renderer;
+        pendingEntity = entity;
+        pendingPartialTick = partialTick;
+    }
+
+    public static void clearStaleOverlayFlag() {
+        overlayPassActive = false;
+    }
+
+    /**
+     * Called from the WrapOperation on renderPassModel.render() in doRender.
+     * Captures the modelview matrix and animation params, skipping the actual render.
+     */
+    public static void deferRender(float limbSwing, float limbSwingAmount, float ageInTicks,
+                                   float headYaw, float headPitch, float scale) {
+        overlayPassActive = false;
+
+        DeferredEntry entry = acquireEntry();
+        entry.set(pendingShouldRenderPass, pendingRenderer, pendingEntity, pendingPartialTick,
+            limbSwing, limbSwingAmount, ageInTicks, headYaw, headPitch, scale);
+
+        MATRIX_BUF.clear();
+        GLStateManager.glGetFloat(GL11.GL_MODELVIEW_MATRIX, MATRIX_BUF);
+        MATRIX_BUF.get(entry.matrix);
+
+        deferred.add(entry);
+
+        pendingShouldRenderPass = null;
+        pendingRenderer = null;
+        pendingEntity = null;
+    }
+
+    private static DeferredEntry acquireEntry() {
+        int size = pool.size();
+        if (size > 0) {
+            return pool.remove(size - 1);
+        }
+        return new DeferredEntry();
+    }
+
+    private static void recycle() {
+        for (DeferredEntry entry : deferred) {
+            entry.shouldRenderPass = null;
+            entry.renderer = null;
+            entry.entity = null;
+            pool.add(entry);
+        }
+        deferred.clear();
+    }
+
+    public static void clear() {
+        recycle();
+        overlayPassActive = false;
+        replaying = false;
+    }
+
+    public static void renderAll() {
+        if (deferred.isEmpty()) return;
+
+        GbufferPrograms.beginEntities();
+        try {
+            for (DeferredEntry entry : deferred) {
+                CapturedRenderingState.INSTANCE.setCurrentEntity(EntityIdHelper.getEntityId(entry.entity));
+                renderOverlay(entry);
+            }
+        } finally {
+            CapturedRenderingState.INSTANCE.setCurrentEntity(-1);
+            GbufferPrograms.endEntities();
+        }
+        recycle();
+    }
+
+    private static void renderOverlay(DeferredEntry entry) {
+        EntityLivingBase entity = entry.entity;
+
+        // Restore the entity's lightmap coords
+        int brightness = entity.getBrightnessForRender(entry.partialTick);
+        OpenGlHelper.setLightmapTextureCoords(OpenGlHelper.lightmapTexUnit,
+            brightness % 65536, (float) brightness / 65536);
+
+        // Restore the saved modelview matrix
+        GLStateManager.glMatrixMode(GL11.GL_MODELVIEW);
+        GLStateManager.glPushMatrix();
+        boolean depthMaskDisabled = false;
+        try {
+            MATRIX_BUF.clear();
+            MATRIX_BUF.put(entry.matrix);
+            MATRIX_BUF.flip();
+            GLStateManager.glLoadMatrix(MATRIX_BUF);
+
+            // Replay shouldRenderPass pass 1
+            replaying = true;
+            int result = entry.shouldRenderPass.invoke(entity, 1, entry.partialTick);
+            if (result > 0) {
+                // Disable depth writes so coplanar faces don't z-fight each other
+                GLStateManager.glDepthMask(false);
+                depthMaskDisabled = true;
+
+                // Disable backface culling so both sides of the overlay shell are visible
+                GLStateManager.glDisable(GL11.GL_CULL_FACE);
+
+                // Render using the model set by shouldRenderPass
+                entry.renderer.renderPassModel.setLivingAnimations(entity,
+                    entry.limbSwing, entry.limbSwingAmount, entry.partialTick);
+
+                entry.renderer.renderPassModel.render(entity,
+                    entry.limbSwing, entry.limbSwingAmount, entry.ageInTicks,
+                    entry.headYaw, entry.headPitch, entry.scale);
+            }
+
+            // Replay shouldRenderPass pass 2
+            entry.shouldRenderPass.invoke(entity, 2, entry.partialTick);
+        } finally {
+            replaying = false;
+            if (depthMaskDisabled) {
+                GLStateManager.glDepthMask(true);
+                GLStateManager.glEnable(GL11.GL_CULL_FACE);
+            }
+            GLStateManager.glPopMatrix();
+        }
+    }
+
+    private static class DeferredEntry {
+        final float[] matrix = new float[16];
+        ShouldRenderPassFn shouldRenderPass;
+        RendererLivingEntity renderer;
+        EntityLivingBase entity;
+        float partialTick;
+        float limbSwing;
+        float limbSwingAmount;
+        float ageInTicks;
+        float headYaw;
+        float headPitch;
+        float scale;
+
+        void set(ShouldRenderPassFn shouldRenderPass, RendererLivingEntity renderer,
+                 EntityLivingBase entity, float partialTick,
+                 float limbSwing, float limbSwingAmount, float ageInTicks,
+                 float headYaw, float headPitch, float scale) {
+            this.shouldRenderPass = shouldRenderPass;
+            this.renderer = renderer;
+            this.entity = entity;
+            this.partialTick = partialTick;
+            this.limbSwing = limbSwing;
+            this.limbSwingAmount = limbSwingAmount;
+            this.ageInTicks = ageInTicks;
+            this.headYaw = headYaw;
+            this.headPitch = headPitch;
+            this.scale = scale;
+        }
+    }
+}

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

@@ -0,0 +1,31 @@
+package com.gtnewhorizons.angelica.rendering;
+
+import net.minecraft.client.model.ModelBox;
+import net.minecraft.client.model.ModelHorse;
+import net.minecraft.client.model.ModelRenderer;
+
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * Horse model with all boxes inflated outward, used as a separate armor layer.
+ * Extends ModelHorse to inherit all animation and render logic. The constructor
+ * builds the default geometry, then we rebuild every box with inflate applied.
+ * This mirrors how modern MC uses a separate ModelLayers.HORSE_ARMOR.
+ */
+public class ModelHorseArmor extends ModelHorse {
+
+    public ModelHorseArmor(float inflate) {
+        super();
+        for (ModelRenderer renderer : this.boxList) {
+            List<ModelBox> originalBoxes = new ArrayList<>(renderer.cubeList);
+            renderer.cubeList.clear();
+            for (ModelBox box : originalBoxes) {
+                int width = Math.round(box.posX2 - box.posX1);
+                int height = Math.round(box.posY2 - box.posY1);
+                int depth = Math.round(box.posZ2 - box.posZ1);
+                renderer.addBox(box.posX1, box.posY1, box.posZ1, width, height, depth, inflate);
+            }
+        }
+    }
+}

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

@@ -16,4 +16,8 @@ public interface StateAwareTessellator {
     void angelica$setCeleritasMeshing(boolean active);
 
     int[] angelica$getVertexStates();
+
+    int[] angelica$getShaderOverrideBlockIds();
+
+    void angelica$setShaderOverrideBlockId(short blockId);
 }

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

@@ -0,0 +1,5 @@
+package com.gtnewhorizons.angelica.rendering;
+
+public class WitherArmorState {
+    public static boolean pendingInflate = false;
+}

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

@@ -115,6 +115,7 @@ public class AngelicaChunkBuildContext extends ChunkBuildContext {
 
     @SuppressWarnings("unchecked")
     public void copyRawBuffer(int[] rawBuffer, int vertexCount, int[] vertexStates,
+                              int[] shaderOverrideBlockIds,
                               ChunkBuildBuffers buffers, Material material, boolean isShaderPackOverride,
                               boolean blockAllowsSmoothLighting) {
         if (vertexCount == 0) {
@@ -145,6 +146,8 @@ public class AngelicaChunkBuildContext extends ChunkBuildContext {
         final int worldY = originY + blockY;
         final int worldZ = originZ + blockZ;
 
+        final short originalBlockId = blockRenderContext.blockId;
+
         int stateIdx = 0;
         int facesAtBaseMaterial = 0;
 
@@ -239,6 +242,9 @@ public class AngelicaChunkBuildContext extends ChunkBuildContext {
             }
             final var builder = buffers.get(correctMaterial);
 
+            final int shaderOverrideBlockId = shaderOverrideBlockIds[quadIdx * 4];
+            blockRenderContext.blockId = shaderOverrideBlockId != -1 ? (short) shaderOverrideBlockId : originalBlockId;
+
             if (correctMaterial != material && builder.getEncoder() instanceof IrisExtendedChunkVertexEncoder iris) {
                 iris.setContext(blockRenderContext);
             }

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

@@ -20,6 +20,7 @@ import net.minecraft.crash.CrashReport;
 import net.minecraft.crash.CrashReportCategory;
 import net.minecraft.init.Blocks;
 import net.minecraft.tileentity.TileEntity;
+import net.minecraft.util.AxisAlignedBB;
 import net.minecraft.util.ReportedException;
 import net.minecraft.world.IBlockAccess;
 import org.embeddedt.embeddium.impl.render.chunk.RenderSection;
@@ -139,7 +140,20 @@ public abstract class AngelicaChunkBuilderMeshingTask extends ChunkBuilderTask<C
                         if (block.hasTileEntity(meta)) {
                             final TileEntity tileEntity = region.getTileEntity(x, y, z);
                             if (tileEntity != null && TileEntityRendererDispatcher.instance.hasSpecialRenderer(tileEntity)) {
-                                (TileEntityRenderBoundsRegistry.isAlwaysInfiniteExtent(tileEntity) ? renderData.globalBlockEntities : renderData.culledBlockEntities).add(tileEntity);
+                                final boolean isGlobal;
+                                if (TileEntityRenderBoundsRegistry.isAlwaysInfiniteExtent(tileEntity)) {
+                                    isGlobal = true;
+                                } else {
+                                    final AxisAlignedBB aabb = tileEntity.getRenderBoundingBox();
+                                    if (aabb != null) {
+                                        final int secMinX = x & ~15, secMinY = y & ~15, secMinZ = z & ~15;
+                                        isGlobal = aabb.minX < secMinX || aabb.minY < secMinY || aabb.minZ < secMinZ
+                                            || aabb.maxX > secMinX + 16 || aabb.maxY > secMinY + 16 || aabb.maxZ > secMinZ + 16;
+                                    } else {
+                                        isGlobal = false;
+                                    }
+                                }
+                                (isGlobal ? renderData.globalBlockEntities : renderData.culledBlockEntities).add(tileEntity);
                             }
                         }
 
@@ -256,6 +270,7 @@ public abstract class AngelicaChunkBuilderMeshingTask extends ChunkBuilderTask<C
             && block.getLightValue() == 0; // does not emit real block light
         buildContext.copyRawBuffer(tessellator.rawBuffer, tessellator.vertexCount,
             ((StateAwareTessellator)tessellator).angelica$getVertexStates(),
+            ((StateAwareTessellator)tessellator).angelica$getShaderOverrideBlockIds(),
             buffers, passMaterial, isShaderPackOverride, blockAllowsSmoothLighting);
         tessellator.reset();
         tessellator.isDrawing = false;

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

@@ -6,7 +6,7 @@ import com.gtnewhorizons.angelica.dynamiclights.DynamicLights;
 import com.gtnewhorizons.angelica.glsm.GLStateManager;
 import static com.gtnewhorizons.angelica.glsm.backend.BackendManager.RENDER_BACKEND;
 import com.gtnewhorizons.angelica.glsm.ffp.ShaderManager;
-import com.gtnewhorizons.angelica.client.rendering.TessellatorStreamingDrawer;
+import com.gtnewhorizons.angelica.glsm.streaming.TessellatorStreamingDrawer;
 import com.gtnewhorizons.angelica.glsm.states.FogState;
 import cpw.mods.fml.common.eventhandler.EventPriority;
 import cpw.mods.fml.common.eventhandler.SubscribeEvent;

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

@@ -52,10 +52,10 @@ public class CeleritasWorldRenderer extends SimpleWorldRenderer<WorldClient, Ang
     private static final double MAX_ENTITY_CHECK_VOLUME = 16 * 16 * 16 * 15;
 
     // For sorting transparent TESRs
-    private RenderSectionOrderer renderSectionOrderer = new RenderSectionOrderer();
-    private TileEntityOrderer tileEntityOrderer = new TileEntityOrderer();
-    private ArrayList<RenderSection> sortedRenderSections = new ArrayList<>();
-    private ArrayList<TileEntity> sortedTileEntities = new ArrayList<>();
+    private final RenderSectionOrderer renderSectionOrderer = new RenderSectionOrderer();
+    private final TileEntityOrderer tileEntityOrderer = new TileEntityOrderer();
+    private final ArrayList<RenderSection> sortedRenderSections = new ArrayList<>();
+    private final ArrayList<TileEntity> sortedTileEntities = new ArrayList<>();
 
     private CeleritasWorldRenderer(Minecraft mc) {
         // Private constructor for singleton
@@ -92,6 +92,10 @@ public class CeleritasWorldRenderer extends SimpleWorldRenderer<WorldClient, Ang
     @Override
     protected void unloadWorld() {
         DynamicLights.setActiveRenderer(null);
+        this.sortedRenderSections.clear();
+        this.sortedTileEntities.clear();
+        ShadowRenderer.visibleTileEntities.clear();
+        ShadowRenderer.globalTileEntities.clear();
         super.unloadWorld();
     }
 

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

@@ -79,13 +79,13 @@ public class IrisExtendedChunkVertexEncoder implements ContextAwareChunkVertexEn
 
         baseEncoder.write(ptr, material, vertex, sectionIndex);
 
-        // Per-vertex: renderType, midBlock, lightValue
-        memPutShort(ptr + MC_ENTITY_OFFSET + 2, ctx.renderType);
+        // Per-vertex: mc_Entity (packed blockId + renderType), midBlock, lightValue
+        memPutInt(ptr + MC_ENTITY_OFFSET, ((ctx.blockId + 1) << 1) | (ctx.renderType & 1));
         final int midBlock = ExtendedDataHelper.computeMidBlock(vertex.x, vertex.y, vertex.z, ctx.localPosX, ctx.localPosY, ctx.localPosZ);
         memPutInt(ptr + MID_BLOCK_OFFSET, midBlock);
         memPutByte(ptr + MID_BLOCK_OFFSET + 3, ctx.lightValue);
 
-        // Per-quad: midTexCoord, blockId, normal, tangent
+        // Per-quad: midTexCoord, normal, tangent
         if (vertexCount == 4) {
             vertexCount = 0;
 
@@ -98,11 +98,6 @@ public class IrisExtendedChunkVertexEncoder implements ContextAwareChunkVertexEn
             memPutInt(ptr + MID_TEX_OFFSET - STRIDE * 2, midUV);
             memPutInt(ptr + MID_TEX_OFFSET - STRIDE * 3, midUV);
 
-            memPutShort(ptr + MC_ENTITY_OFFSET, ctx.blockId);
-            memPutShort(ptr + MC_ENTITY_OFFSET - STRIDE, ctx.blockId);
-            memPutShort(ptr + MC_ENTITY_OFFSET - STRIDE * 2, ctx.blockId);
-            memPutShort(ptr + MC_ENTITY_OFFSET - STRIDE * 3, ctx.blockId);
-
             quad.setup(ptr, STRIDE);
             NormalHelper.computeFaceNormal(normal, quad);
             final int packedNormal = NormI8.pack(normal);

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

@@ -13,7 +13,7 @@ import org.embeddedt.embeddium.impl.render.chunk.vertex.format.ChunkVertexType;
  *   mc_midTexCoord  ushort[2]  - quad center UV (average of 4 vertices)
  *   at_tangent      byte[4]    - tangent vector, normalized
  *   iris_Normal     byte[3]+1  - face normal, normalized
- *   mc_Entity       short[2]   - (blockId, renderType)
+ *   mc_Entity       uint       - packed as ((blockId + 1) << 1) | (renderType & 1)
  *   at_midBlock     byte[4]    - (xyz offset from block center, lightValue)
  */
 public class IrisExtendedChunkVertexType implements ChunkVertexType {
@@ -25,7 +25,7 @@ public class IrisExtendedChunkVertexType implements ChunkVertexType {
         .addElement("mc_midTexCoord", GlVertexFormat.NEXT_ALIGNED_POINTER, GlVertexAttributeFormat.UNSIGNED_SHORT, 2, false, false)
         .addElement("at_tangent", GlVertexFormat.NEXT_ALIGNED_POINTER, GlVertexAttributeFormat.BYTE, 4, true, false)
         .addElement("iris_Normal", GlVertexFormat.NEXT_ALIGNED_POINTER, GlVertexAttributeFormat.BYTE, 3, true, false)
-        .addElement("mc_Entity", GlVertexFormat.NEXT_ALIGNED_POINTER, GlVertexAttributeFormat.SHORT, 2, false, false)
+        .addElement("mc_Entity", GlVertexFormat.NEXT_ALIGNED_POINTER, GlVertexAttributeFormat.UNSIGNED_INT, 1, false, true)
         .addElement("at_midBlock", GlVertexFormat.NEXT_ALIGNED_POINTER, GlVertexAttributeFormat.BYTE, 4, false, false)
         .build();
 

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

@@ -43,6 +43,20 @@ public class CTMUtils {
     private static Overrides newOverrides = null;
     private static TileLoader tileLoader;
 
+    private static final ThreadLocal<TileOverrideImpl.CTMCompact> CURRENT_COMPACT = new ThreadLocal<>();
+
+    public static void setCurrentCompact(TileOverrideImpl.CTMCompact compact) {
+        CURRENT_COMPACT.set(compact);
+    }
+
+    public static TileOverrideImpl.CTMCompact getCurrentCompact() {
+        return CURRENT_COMPACT.get();
+    }
+
+    public static void clearCurrentCompact() {
+        CURRENT_COMPACT.remove();
+    }
+
     private static final StampedLock lock = new StampedLock();
 
     private static class StateAndIterator {

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

@@ -0,0 +1,39 @@
+package com.prupe.mcpatcher.ctm;
+
+import com.prupe.mcpatcher.mal.resource.PropertiesFile;
+import it.unimi.dsi.fastutil.ints.Int2IntMap;
+import it.unimi.dsi.fastutil.ints.Int2IntOpenHashMap;
+
+public class CompactConnectingCtmProperties {
+
+    private final boolean innerSeams;
+    private final String orientation;
+    private final Int2IntMap tileReplacementMap = new Int2IntOpenHashMap();
+
+    public CompactConnectingCtmProperties(PropertiesFile properties) {
+        this.innerSeams = properties.getBoolean("innerSeams", false);
+        this.orientation = properties.getString("orientation", "none").toLowerCase();
+
+        for (int i = 0; i < 47; i++) {
+            String val = properties.getString("ctm." + i, "");
+            if (!val.isEmpty()) {
+                try {
+                    int tileIdx = Integer.parseInt(val.trim());
+                    tileReplacementMap.put(i, tileIdx);
+                } catch (NumberFormatException ignored) {}
+            }
+        }
+    }
+
+    public boolean getInnerSeams() {
+        return innerSeams;
+    }
+
+    public String getOrientation() {
+        return orientation;
+    }
+
+    public Int2IntMap getTileReplacementMap() {
+        return tileReplacementMap;
+    }
+}

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

@@ -0,0 +1,322 @@
+package com.prupe.mcpatcher.ctm;
+
+import com.github.bsideup.jabel.Desugar;
+import it.unimi.dsi.fastutil.ints.Int2IntMap;
+import net.minecraft.block.Block;
+import net.minecraft.client.renderer.RenderBlocks;
+import net.minecraft.util.IIcon;
+import net.minecraft.world.IBlockAccess;
+
+public final class CompactCtmQuadProcessor {
+
+    private static final int LEFT = 0;
+    private static final int UP_LEFT = 1;
+    private static final int UP = 2;
+    private static final int UP_RIGHT = 3;
+    private static final int RIGHT = 4;
+    private static final int DOWN_RIGHT = 5;
+    private static final int DOWN = 6;
+    private static final int DOWN_LEFT = 7;
+
+    private static final int SPRITE_DEFAULT = 0;
+    private static final int SPRITE_ALL = 1;
+    private static final int SPRITE_HORIZONTAL = 2;
+    private static final int SPRITE_VERTICAL = 3;
+    private static final int SPRITE_MIXED = 4;
+
+    private static final int[] CTM_47_BY_CONNECTIONS = {
+        0,3,0,3,12,5,12,15,0,3,0,3,12,5,12,15,
+        1,2,1,2,4,7,4,29,1,2,1,2,13,31,13,14,
+        0,3,0,3,12,5,12,15,0,3,0,3,12,5,12,15,
+        1,2,1,2,4,7,4,29,1,2,1,2,13,31,13,14,
+        36,17,36,17,24,19,24,43,36,17,36,17,24,19,24,43,
+        16,18,16,18,6,46,6,21,16,18,16,18,28,9,28,22,
+        36,17,36,17,24,19,24,43,36,17,36,17,24,19,24,43,
+        37,40,37,40,30,8,30,34,37,40,37,40,25,23,25,45,
+        0,3,0,3,12,5,12,15,0,3,0,3,12,5,12,15,
+        1,2,1,2,4,7,4,29,1,2,1,2,13,31,13,14,
+        0,3,0,3,12,5,12,15,0,3,0,3,12,5,12,15,
+        1,2,1,2,4,7,4,29,1,2,1,2,13,31,13,14,
+        36,39,36,39,24,41,24,27,36,39,36,39,24,41,24,27,
+        16,42,16,42,6,20,6,10,16,42,16,42,28,35,28,44,
+        36,39,36,39,24,41,24,27,36,39,36,39,24,41,24,27,
+        37,38,37,38,30,11,30,32,37,38,37,38,25,33,25,26
+    };
+
+    /**
+     * Face-local basis:
+     * right = increasing U on the face
+     * down  = increasing V on the face
+     */
+    private static final FaceBasis[] FACE_BASIS = {
+        new FaceBasis( 1,  0,  0,  0,  0,  1), // 0: Y-
+        new FaceBasis( 1,  0,  0,  0,  0,  1), // 1: Y+
+        new FaceBasis(-1,  0,  0,  0, -1,  0), // 2: Z-
+        new FaceBasis( 1,  0,  0,  0, -1,  0), // 3: Z+
+        new FaceBasis( 0,  0,  1,  0, -1,  0), // 4: X-
+        new FaceBasis( 0,  0, -1,  0, -1,  0)  // 5: X+
+    };
+
+    /**
+     * Neighbor offsets in face-local coordinates:
+     * 0 = left, 1 = up-left, 2 = up, 3 = up-right,
+     * 4 = right, 5 = down-right, 6 = down, 7 = down-left
+     */
+    private static final int[] RIGHT_FACTOR = {-1, -1, 0, 1, 1, 1, 0, -1};
+    private static final int[] DOWN_FACTOR  = { 0, -1, -1, -1, 0, 1, 1, 1};
+
+    /**
+     * Quadrant side references:
+     * 0 = top-left
+     * 1 = top-right
+     * 2 = bottom-right
+     * 3 = bottom-left
+     */
+    private static final int[] QUAD_A = {LEFT, UP, RIGHT, DOWN};
+    private static final int[] QUAD_B = {UP, RIGHT, DOWN, LEFT};
+    private static final int[] QUAD_DIAG = {UP_LEFT, UP_RIGHT, DOWN_RIGHT, DOWN_LEFT};
+
+    private final IIcon[] sprites;
+    private final CompactConnectingCtmProperties props;
+
+    CompactCtmQuadProcessor(IIcon[] sprites, CompactConnectingCtmProperties props) {
+        this.sprites = new IIcon[5];
+        if (sprites != null) {
+            System.arraycopy(sprites, 0, this.sprites, 0, Math.min(sprites.length, this.sprites.length));
+        }
+        this.props = props;
+    }
+
+    public boolean processFace(RenderBlocks rb, IBlockAccess world, int x, int y, int z, int face, IIcon origIcon) {
+        int connections = CtmConnectionHelper.getConnections(world, x, y, z, face, props.getInnerSeams());
+
+        int ctmIndex = CTM_47_BY_CONNECTIONS[connections & 0xFF];
+        IIcon replacement = getReplacementIcon(ctmIndex);
+        if (replacement != null) {
+            renderWholeFace(rb, world, x, y, z, face, replacement);
+            return true;
+        }
+
+        if (connections == 0 || connections == 0xFF) {
+            IIcon sprite = sprites[getCompactSpriteIndex(connections)];
+            if (sprite != null) {
+                renderWholeFace(rb, world, x, y, z, face, sprite);
+                return true;
+            }
+            return false;
+        }
+
+        renderSplitFace(rb, world, x, y, z, face, connections);
+        return true;
+    }
+
+    private IIcon getReplacementIcon(int ctmIndex) {
+        Int2IntMap map = props.getTileReplacementMap();
+        if (map == null || !map.containsKey(ctmIndex)) {
+            return null;
+        }
+
+        int spriteIndex = map.get(ctmIndex);
+        if (spriteIndex < 0 || spriteIndex >= sprites.length) {
+            return null;
+        }
+
+        return sprites[spriteIndex];
+    }
+
+    /**
+     * Compact 5-sprite variant:
+     * 0 = default / isolated / mixed
+     * 1 = all neighbors
+     * 2 = horizontal line
+     * 3 = vertical line
+     */
+    private int getCompactSpriteIndex(int connections) {
+        if (connections == 0xFF) {
+            return SPRITE_ALL;
+        }
+
+        if ((connections & ((1 << LEFT) | (1 << RIGHT))) == ((1 << LEFT) | (1 << RIGHT))) {
+            return SPRITE_HORIZONTAL;
+        }
+
+        if ((connections & ((1 << UP) | (1 << DOWN))) == ((1 << UP) | (1 << DOWN))) {
+            return SPRITE_VERTICAL;
+        }
+
+        return SPRITE_DEFAULT;
+    }
+
+    private void renderSplitFace(RenderBlocks rb, IBlockAccess world, int x, int y, int z, int face, int connections) {
+        Block block = world.getBlock(x, y, z);
+
+        double minX = rb.renderMinX;
+        double minY = rb.renderMinY;
+        double minZ = rb.renderMinZ;
+        double maxX = rb.renderMaxX;
+        double maxY = rb.renderMaxY;
+        double maxZ = rb.renderMaxZ;
+
+        for (int q = 0; q < 4; q++) {
+            IIcon icon = sprites[getQuadrantSprite(q, connections)];
+            if (icon == null) {
+                continue;
+            }
+
+            setQuadrantBounds(rb, face, q, minX, minY, minZ, maxX, maxY, maxZ);
+            rb.overrideBlockTexture = icon;
+            renderFace(rb, block, x, y, z, face, icon);
+        }
+
+        rb.overrideBlockTexture = null;
+        rb.setRenderBounds(minX, minY, minZ, maxX, maxY, maxZ);
+    }
+
+    private void renderWholeFace(RenderBlocks rb, IBlockAccess world, int x, int y, int z, int face, IIcon icon) {
+        Block block = world.getBlock(x, y, z);
+        IIcon saved = rb.overrideBlockTexture;
+        rb.overrideBlockTexture = icon;
+        try {
+            renderFace(rb, block, x, y, z, face, icon);
+        } finally {
+            rb.overrideBlockTexture = saved;
+        }
+    }
+
+    private void renderFace(RenderBlocks rb, Block block, int x, int y, int z, int face, IIcon icon) {
+        boolean originalFlip = rb.field_152631_f;
+        rb.field_152631_f = (face == 2 || face == 5);
+        try {
+            switch (face) {
+                case 0 -> rb.renderFaceYNeg(block, x, y, z, icon);
+                case 1 -> rb.renderFaceYPos(block, x, y, z, icon);
+                case 2 -> rb.renderFaceZNeg(block, x, y, z, icon);
+                case 3 -> rb.renderFaceZPos(block, x, y, z, icon);
+                case 4 -> rb.renderFaceXNeg(block, x, y, z, icon);
+                case 5 -> rb.renderFaceXPos(block, x, y, z, icon);
+            }
+        } finally {
+            rb.field_152631_f = originalFlip;
+        }
+    }
+
+    /**
+     * Quadrants are always interpreted as:
+     * 0 = top-left, 1 = top-right, 2 = bottom-right, 3 = bottom-left
+     * in the face-local view.
+     */
+    private void setQuadrantBounds(RenderBlocks rb, int face, int quadrant,
+                                   double minX, double minY, double minZ,
+                                   double maxX, double maxY, double maxZ) {
+        double midX = (minX + maxX) * 0.5;
+        double midY = (minY + maxY) * 0.5;
+        double midZ = (minZ + maxZ) * 0.5;
+
+        switch (face) {
+            case 0:
+            case 1:
+                if (quadrant == 0) rb.setRenderBounds(minX, minY, minZ, midX, maxY, midZ);
+                if (quadrant == 1) rb.setRenderBounds(midX, minY, minZ, maxX, maxY, midZ);
+                if (quadrant == 2) rb.setRenderBounds(midX, minY, midZ, maxX, maxY, maxZ);
+                if (quadrant == 3) rb.setRenderBounds(minX, minY, midZ, midX, maxY, maxZ);
+                break;
+
+            case 2:
+                if (quadrant == 0) rb.setRenderBounds(midX, midY, minZ, maxX, maxY, maxZ);
+                if (quadrant == 1) rb.setRenderBounds(minX, midY, minZ, midX, maxY, maxZ);
+                if (quadrant == 2) rb.setRenderBounds(minX, minY, minZ, midX, midY, maxZ);
+                if (quadrant == 3) rb.setRenderBounds(midX, minY, minZ, maxX, midY, maxZ);
+                break;
+
+            case 3:
+                if (quadrant == 0) rb.setRenderBounds(minX, midY, minZ, midX, maxY, maxZ);
+                if (quadrant == 1) rb.setRenderBounds(midX, midY, minZ, maxX, maxY, maxZ);
+                if (quadrant == 2) rb.setRenderBounds(midX, minY, minZ, maxX, midY, maxZ);
+                if (quadrant == 3) rb.setRenderBounds(minX, minY, minZ, midX, midY, maxZ);
+                break;
+
+            case 4:
+                if (quadrant == 0) rb.setRenderBounds(minX, midY, minZ, maxX, maxY, midZ);
+                if (quadrant == 1) rb.setRenderBounds(minX, midY, midZ, maxX, maxY, maxZ);
+                if (quadrant == 2) rb.setRenderBounds(minX, minY, midZ, maxX, midY, maxZ);
+                if (quadrant == 3) rb.setRenderBounds(minX, minY, minZ, maxX, midY, midZ);
+                break;
+
+            case 5:
+                if (quadrant == 0) rb.setRenderBounds(minX, midY, midZ, maxX, maxY, maxZ);
+                if (quadrant == 1) rb.setRenderBounds(minX, midY, minZ, maxX, maxY, midZ);
+                if (quadrant == 2) rb.setRenderBounds(minX, minY, minZ, maxX, midY, midZ);
+                if (quadrant == 3) rb.setRenderBounds(minX, minY, midZ, maxX, midY, maxZ);
+                break;
+
+            default:
+                break;
+        }
+    }
+
+    /**
+     * A quadrant is built from two cardinal sides and the diagonal between them.
+     */
+    private int getQuadrantSprite(int quadrant, int connections) {
+        int sideA = QUAD_A[quadrant];
+        int sideB = QUAD_B[quadrant];
+        int diag = QUAD_DIAG[quadrant];
+
+        boolean connA = (connections & (1 << sideA)) != 0;
+        boolean connB = (connections & (1 << sideB)) != 0;
+
+        if (connA && connB) {
+            return (connections & (1 << diag)) != 0 ? SPRITE_ALL : SPRITE_MIXED;
+        }
+
+        if (connA ^ connB) {
+            int connectedBit = connA ? sideA : sideB;
+            return (connectedBit == LEFT || connectedBit == RIGHT) ? SPRITE_VERTICAL : SPRITE_HORIZONTAL;
+        }
+
+        return SPRITE_DEFAULT;
+    }
+
+    @Desugar
+    private record FaceBasis(int rightX, int rightY, int rightZ, int downX, int downY, int downZ) { }
+
+    private static final class CtmConnectionHelper {
+
+        public static int getConnections(IBlockAccess world, int x, int y, int z, int face, boolean innerSeams) {
+            Block self = world.getBlock(x, y, z);
+            FaceBasis basis = FACE_BASIS[face];
+
+            int bits = 0;
+
+            for (int i = 0; i < 8; i++) {
+                int dx = RIGHT_FACTOR[i] * basis.rightX + DOWN_FACTOR[i] * basis.downX;
+                int dy = RIGHT_FACTOR[i] * basis.rightY + DOWN_FACTOR[i] * basis.downY;
+                int dz = RIGHT_FACTOR[i] * basis.rightZ + DOWN_FACTOR[i] * basis.downZ;
+
+                int nx = x + dx;
+                int ny = y + dy;
+                int nz = z + dz;
+
+                if (world.getBlock(nx, ny, nz) != self) {
+                    continue;
+                }
+
+                if (innerSeams && !shouldRenderInnerSeam(world, nx, ny, nz, face)) {
+                    continue;
+                }
+
+                bits |= (1 << i);
+            }
+
+            return bits;
+        }
+
+        private static boolean shouldRenderInnerSeam(IBlockAccess world, int x, int y, int z, int face) {
+            int[] normal = RenderBlockState.NORMALS[face];
+            int sx = x + normal[0];
+            int sy = y + normal[1];
+            int sz = z + normal[2];
+            return world.getBlock(sx, sy, sz).shouldSideBeRendered(world, sx, sy, sz, face);
+        }
+    }
+}

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

@@ -28,7 +28,7 @@ import com.prupe.mcpatcher.mal.resource.PropertiesFile;
 import com.prupe.mcpatcher.mal.resource.TexturePackAPI;
 import com.prupe.mcpatcher.mal.tile.TileLoader;
 
-abstract class TileOverride implements Comparable<TileOverride> {
+public abstract class TileOverride implements Comparable<TileOverride> {
 
     private static final MCLogger logger = MCLogger.getLogger(MCLogger.Category.CONNECTED_TEXTURES, "CTM");
 
@@ -80,6 +80,7 @@ abstract class TileOverride implements Comparable<TileOverride> {
                 tileLoader);
             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);
             default -> properties.error("unknown method \"%s\"", method);
         }
 

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

@@ -18,7 +18,7 @@ import com.prupe.mcpatcher.mal.resource.PropertiesFile;
 import com.prupe.mcpatcher.mal.tile.TileLoader;
 import com.prupe.mcpatcher.mal.util.WeightedIndex;
 
-class TileOverrideImpl {
+public class TileOverrideImpl {
 
     final static class CTM extends TileOverride {
 
@@ -481,4 +481,49 @@ class TileOverrideImpl {
             return icons[0];
         }
     }
+
+    final public static class CTMCompact extends TileOverride {
+
+        private final CompactConnectingCtmProperties properties;
+        private volatile CompactCtmQuadProcessor processor;
+
+        CTMCompact(PropertiesFile propertiesFile, TileLoader tileLoader) {
+            super(propertiesFile, tileLoader);
+            this.properties = new CompactConnectingCtmProperties(propertiesFile);
+        }
+
+        @Override
+        String getMethod() {
+            return "compact";
+        }
+
+        @Override
+        String checkTileMap() {
+            return getNumberOfTiles() == 5 ? null : "requires exactly 5 tiles";
+        }
+
+        @Override
+        boolean requiresFace() {
+            return true;
+        }
+
+        @Override
+        IIcon getTileWorld_Impl(RenderBlockState renderBlockState, IIcon origIcon) {
+            return origIcon;
+        }
+
+        @Override
+        IIcon getTileHeld_Impl(RenderBlockState renderBlockState, IIcon origIcon) {
+            return icons.length > 0 ? icons[0] : origIcon;
+        }
+
+        public CompactCtmQuadProcessor getProcessor() {
+            CompactCtmQuadProcessor p = this.processor;
+            if (p == null) {
+                p = new CompactCtmQuadProcessor(icons, properties);
+                this.processor = p;
+            }
+            return p;
+        }
+    }
 }

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

@@ -104,6 +104,8 @@ abstract public class TileOverrideIterator implements Iterator<TileOverride> {
     }
 
     public TileOverride go(RenderBlockState renderBlockState, IIcon origIcon) {
+        CTMUtils.clearCurrentCompact();
+
         this.renderBlockState = renderBlockState;
         renderBlockState.setFilter(null);
         currentIcon = origIcon;
@@ -121,6 +123,9 @@ abstract public class TileOverrideIterator implements Iterator<TileOverride> {
                 TileOverride override = next();
                 IIcon newIcon = getTile(override, renderBlockState, origIcon);
                 if (newIcon != null) {
+                    if (override instanceof TileOverrideImpl.CTMCompact compact) {
+                        CTMUtils.setCurrentCompact(compact);
+                    }
                     lastMatchedOverride = override;
                     skipOverrides.add(override);
                     currentIcon = newIcon;

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

@@ -1,11 +1,11 @@
 package net.coderbot.iris;
 
 import com.google.common.base.Throwables;
-import com.gtnewhorizon.gtnhlib.client.renderer.CapturingTessellator;
 import com.gtnewhorizon.gtnhlib.client.renderer.TessellatorManager;
 import com.gtnewhorizons.angelica.Tags;
 import com.gtnewhorizons.angelica.config.AngelicaConfig;
 import com.gtnewhorizons.angelica.proxy.ClientProxy;
+import com.gtnewhorizons.angelica.rendering.StateAwareTessellator;
 import com.gtnewhorizons.angelica.rendering.celeritas.api.IrisShaderProviderHolder;
 import cpw.mods.fml.client.registry.ClientRegistry;
 import cpw.mods.fml.common.eventhandler.SubscribeEvent;
@@ -13,7 +13,6 @@ 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_context.BlockContextHolder;
 import net.coderbot.iris.block_rendering.BlockRenderingSettings;
 import net.coderbot.iris.celeritas.IrisCeleritasShaderProvider;
 import net.coderbot.iris.compat.dh.DHCompat;
@@ -915,35 +914,25 @@ public class Iris {
         ClientRegistry.registerKeyBinding(shaderpackScreenKeybind);
     }
 
-    static BlockContextHolder contextHolder;
-
-    private static int getShaderMaterialOverrideId(Block block, int meta) {
-        if (contextHolder == null) {
-            final Reference2ObjectMap<Block, Int2IntMap> blockMetaMatches = BlockRenderingSettings.INSTANCE.getBlockMetaMatches();
-            if (blockMetaMatches == null) {
-                return -1;
-            }
-            contextHolder = new BlockContextHolder(blockMetaMatches);
-
-        }
-        contextHolder.set(block, meta, (short) block.getRenderType());
-        return contextHolder.blockId;
-    }
-
     public static void setShaderMaterialOverride(Block block, int meta) {
         if (!enabled)
             return;
 
-        int blockId = getShaderMaterialOverrideId(block, meta);
+        final Reference2ObjectMap<Block, Int2IntMap> blockMetaMatches = BlockRenderingSettings.INSTANCE.getBlockMetaMatches();
+        if (blockMetaMatches == null)
+            return;
 
-        if (TessellatorManager.get() instanceof CapturingTessellator tess)
-            tess.setShaderBlockId(blockId);
+        final Int2IntMap metaMap = blockMetaMatches.get(block);
+        final int blockId = metaMap != null ? metaMap.get(meta) : -1;
+
+        if (TessellatorManager.get() instanceof StateAwareTessellator tess)
+            tess.angelica$setShaderOverrideBlockId((short) blockId);
     }
 
     public static void resetShaderMaterialOverride() {
         if (!enabled)
             return;
-        if (TessellatorManager.get() instanceof CapturingTessellator tess)
-            tess.setShaderBlockId(-1);
+        if (TessellatorManager.get() instanceof StateAwareTessellator tess)
+            tess.angelica$setShaderOverrideBlockId((short) -1);
     }
 }

src/main/java/net/coderbot/iris/block_context/BlockContextHolder.java

@@ -1,39 +0,0 @@
-package net.coderbot.iris.block_context;
-
-import it.unimi.dsi.fastutil.ints.Int2IntMap;
-import it.unimi.dsi.fastutil.objects.Reference2ObjectMap;
-import net.minecraft.block.Block;
-
-/**
- * Holds block context for shader material ID lookups.
- */
-public class BlockContextHolder {
-    private final Reference2ObjectMap<Block, Int2IntMap> blockMetaMatches;
-    public int blockId;
-    public short renderType;
-
-    public BlockContextHolder(Reference2ObjectMap<Block, Int2IntMap> blockMetaMatches) {
-        this.blockMetaMatches = blockMetaMatches;
-        this.blockId = -1;
-        this.renderType = -1;
-    }
-
-    /**
-     * Set the material ID for a block.
-     * @param block The block
-     * @param meta The block metadata
-     * @param renderType The render type
-     */
-    public void set(Block block, int meta, short renderType) {
-        Int2IntMap metaMap = this.blockMetaMatches != null ? this.blockMetaMatches.get(block) : null;
-        int id = metaMap != null ? metaMap.get(meta) : -1;
-
-        this.blockId = id;
-        this.renderType = renderType;
-    }
-
-    public void reset() {
-        this.blockId = -1;
-        this.renderType = -1;
-    }
-}

src/main/java/net/coderbot/iris/celeritas/CeleritasTerrainPipeline.java

@@ -72,9 +72,11 @@ public class CeleritasTerrainPipeline {
             Optional<ProgramSource> terrainSource,
             Optional<ProgramSource> translucentSource,
             Optional<ProgramSource> shadowSource,
+            Optional<ProgramSource> shadowTranslucentSource,
             CompletableFuture<Map<PatchShaderType, String>> terrainFuture,
             CompletableFuture<Map<PatchShaderType, String>> translucentFuture,
             CompletableFuture<Map<PatchShaderType, String>> shadowFuture,
+            CompletableFuture<Map<PatchShaderType, String>> shadowTranslucentFuture,
             RenderTargets renderTargets,
             ImmutableSet<Integer> flippedAfterPrepare,
             ImmutableSet<Integer> flippedAfterTranslucent,
@@ -92,6 +94,7 @@ public class CeleritasTerrainPipeline {
         gbufferProgramSource.put(IrisTerrainPass.GBUFFER_CUTOUT, terrainSource);
         gbufferProgramSource.put(IrisTerrainPass.GBUFFER_TRANSLUCENT, translucentSource.isPresent() ? translucentSource : terrainSource);
         gbufferProgramSource.put(IrisTerrainPass.SHADOW, shadowSource);
+        gbufferProgramSource.put(IrisTerrainPass.SHADOW_TRANSLUCENT, shadowTranslucentSource.isPresent() ? shadowTranslucentSource : shadowSource);
 
         // Initialize PassInfo, framebuffers, blend modes, and alpha in single pass
         for (IrisTerrainPass pass : IrisTerrainPass.VALUES) {
@@ -101,11 +104,12 @@ public class CeleritasTerrainPipeline {
             // Set up framebuffer, blend mode, and buffer blend overrides
             final ProgramId programId = switch (pass) {
                 case GBUFFER_TRANSLUCENT -> ProgramId.Water;
+                case SHADOW_TRANSLUCENT -> ProgramId.ShadowWater;
                 case SHADOW, SHADOW_CUTOUT -> ProgramId.Shadow;
                 default -> ProgramId.Terrain;
             };
 
-            if (pass == IrisTerrainPass.SHADOW || pass == IrisTerrainPass.SHADOW_CUTOUT) {
+            if (pass.isShadow()) {
                 passInfo.framebuffer = shadowFramebuffer;
                 passInfo.blendModeOverride = programId.getBlendModeOverride();
                 passInfo.bufferBlendOverrides = Collections.emptyList();
@@ -145,6 +149,7 @@ public class CeleritasTerrainPipeline {
         processShaderFuture(terrainFuture, terrainSource, passInfoMap.get(IrisTerrainPass.GBUFFER_SOLID), passInfoMap.get(IrisTerrainPass.GBUFFER_CUTOUT));
         processShaderFuture(translucentFuture, translucentSource, passInfoMap.get(IrisTerrainPass.GBUFFER_TRANSLUCENT));
         processShaderFuture(shadowFuture, shadowSource, passInfoMap.get(IrisTerrainPass.SHADOW), passInfoMap.get(IrisTerrainPass.SHADOW_CUTOUT));
+        processShaderFuture(shadowTranslucentFuture, shadowTranslucentSource.isPresent() ? shadowTranslucentSource : shadowSource, passInfoMap.get(IrisTerrainPass.SHADOW_TRANSLUCENT));
     }
 
     private void processShaderFuture(@Nullable CompletableFuture<Map<PatchShaderType, String>> future, Optional<ProgramSource> source, PassInfo... targets) {

src/main/java/net/coderbot/iris/celeritas/IrisCeleritasChunkProgramOverrides.java

@@ -136,8 +136,10 @@ public class IrisCeleritasChunkProgramOverrides {
             if (celeritasPipeline != null && !celeritasPipeline.hasShadowPass()) {
                 throw new IllegalStateException("Shadow program requested, but shader pack has no shadow pass");
             }
-            return programs.get(pass.supportsFragmentDiscard() ?
-                IrisTerrainPass.SHADOW_CUTOUT : IrisTerrainPass.SHADOW);
+            if (pass.isReverseOrder()) {
+                return programs.get(IrisTerrainPass.SHADOW_TRANSLUCENT);
+            }
+            return programs.get(pass.supportsFragmentDiscard() ? IrisTerrainPass.SHADOW_CUTOUT : IrisTerrainPass.SHADOW);
         } else {
             if (pass.supportsFragmentDiscard()) {
                 return programs.get(IrisTerrainPass.GBUFFER_CUTOUT);

src/main/java/net/coderbot/iris/celeritas/IrisCeleritasChunkShaderInterface.java

@@ -187,7 +187,11 @@ public class IrisCeleritasChunkShaderInterface implements ChunkShaderInterface {
         final boolean isShadow = ShadowRenderingState.areShadowsCurrentlyBeingRendered();
         final IrisTerrainPass irisPass;
         if (isShadow) {
-            irisPass = pass.supportsFragmentDiscard() ? IrisTerrainPass.SHADOW_CUTOUT : IrisTerrainPass.SHADOW;
+            if (pass.isReverseOrder()) {
+                irisPass = IrisTerrainPass.SHADOW_TRANSLUCENT;
+            } else {
+                irisPass = pass.supportsFragmentDiscard() ? IrisTerrainPass.SHADOW_CUTOUT : IrisTerrainPass.SHADOW;
+            }
         } else if (pass.isReverseOrder()) {
             irisPass = IrisTerrainPass.GBUFFER_TRANSLUCENT;
         } else if (pass.supportsFragmentDiscard()) {

src/main/java/net/coderbot/iris/celeritas/IrisTerrainPass.java

@@ -6,6 +6,7 @@ import org.embeddedt.embeddium.impl.render.chunk.terrain.TerrainRenderPass;
 public enum IrisTerrainPass {
     SHADOW("shadow"),
     SHADOW_CUTOUT("shadow"),
+    SHADOW_TRANSLUCENT("shadow_water"),
     GBUFFER_SOLID("gbuffers_terrain"),
     GBUFFER_CUTOUT("gbuffers_terrain_cutout"),
     GBUFFER_TRANSLUCENT("gbuffers_water");
@@ -23,19 +24,22 @@ public enum IrisTerrainPass {
     }
 
     public boolean isShadow() {
-        return this == SHADOW || this == SHADOW_CUTOUT;
+        return this == SHADOW || this == SHADOW_CUTOUT || this == SHADOW_TRANSLUCENT;
     }
 
     public TerrainRenderPass toTerrainPass(RenderPassConfiguration<?> config) {
         return switch (this) {
             case SHADOW, GBUFFER_SOLID -> config.defaultSolidMaterial().pass;
             case SHADOW_CUTOUT, GBUFFER_CUTOUT -> config.defaultCutoutMippedMaterial().pass;
-            case GBUFFER_TRANSLUCENT -> config.defaultTranslucentMaterial().pass;
+            case SHADOW_TRANSLUCENT, GBUFFER_TRANSLUCENT -> config.defaultTranslucentMaterial().pass;
         };
     }
 
     public static IrisTerrainPass fromTerrainPass(TerrainRenderPass pass, boolean isShadow) {
         if (isShadow) {
+            if (pass.isReverseOrder()) {
+                return SHADOW_TRANSLUCENT;
+            }
             return pass.supportsFragmentDiscard() ? SHADOW_CUTOUT : SHADOW;
         } else if (pass.supportsFragmentDiscard()) {
             return GBUFFER_CUTOUT;

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

@@ -131,7 +131,7 @@ public class IrisGenericRenderProgram implements IDhApiGenericObjectShaderProgra
         ProgramImages.Builder builder = ProgramImages.builder(id);
         pipeline.addGbufferOrShadowSamplers(samplerBuilder, builder,
             isShadowPass ? pipeline::getFlippedBeforeShadow : () -> translucent ? pipeline.getFlippedAfterTranslucent() : pipeline.getFlippedAfterPrepare(),
-            isShadowPass, true, true, false);
+            isShadowPass, false, true, false);
         customUniforms.mapholderToPass(uniformBuilder, this);
         this.uniforms = uniformBuilder.buildUniforms();
         this.customUniforms = customUniforms;

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

@@ -122,7 +122,7 @@ public class IrisLodRenderProgram {
         ProgramImages.Builder builder = ProgramImages.builder(id);
         pipeline.addGbufferOrShadowSamplers(samplerBuilder, builder,
             isShadowPass ? pipeline::getFlippedBeforeShadow : () -> translucent ? pipeline.getFlippedAfterTranslucent() : pipeline.getFlippedAfterPrepare(),
-            isShadowPass, true, true, false);
+            isShadowPass, false, true, false);
         customUniforms.mapholderToPass(uniformBuilder, this);
         this.uniforms = uniformBuilder.buildUniforms();
         this.customUniforms = customUniforms;

src/main/java/net/coderbot/iris/gbuffer_overrides/matching/RenderCondition.java

@@ -18,6 +18,7 @@ public enum RenderCondition {
 	HAND_TRANSLUCENT,
 	RAIN_SNOW,
 	WORLD_BORDER,
+	SHADOW_TRANSLUCENT,
 	// NB: Must be last due to implementation details of DeferredWorldRenderingPipeline
 	SHADOW
 }

src/main/java/net/coderbot/iris/gl/state/StateUpdateNotifiers.java

@@ -1,9 +1,16 @@
 package net.coderbot.iris.gl.state;
 
 /**
- * Holds update notifiers for PBR texture changes.
+ * Holds some standard update notifiers for various elements of GL state.
  */
 public class StateUpdateNotifiers {
+	public static ValueUpdateNotifier fogModeNotifier;
+	public static ValueUpdateNotifier fogStartNotifier;
+	public static ValueUpdateNotifier fogEndNotifier;
+	public static ValueUpdateNotifier fogDensityNotifier;
+	public static ValueUpdateNotifier blendFuncNotifier;
+	public static ValueUpdateNotifier bindTextureNotifier;
 	public static ValueUpdateNotifier normalTextureChangeNotifier;
 	public static ValueUpdateNotifier specularTextureChangeNotifier;
+	public static ValueUpdateNotifier phaseChangeNotifier;
 }

src/main/java/net/coderbot/iris/gl/uniform/DynamicLocationalUniformHolder.java

@@ -1,11 +1,10 @@
 package net.coderbot.iris.gl.uniform;
 
 import net.coderbot.iris.gl.state.ValueUpdateNotifier;
-import org.joml.Vector2i;
-import org.joml.Vector3i;
+import org.joml.Vector2ic;
 import org.joml.Vector3ic;
-import org.joml.Vector4f;
-import org.joml.Vector4i;
+import org.joml.Vector4fc;
+import org.joml.Vector4ic;
 
 import java.util.function.DoubleSupplier;
 import java.util.function.IntSupplier;
@@ -38,7 +37,7 @@ public interface DynamicLocationalUniformHolder extends LocationalUniformHolder,
 		return this;
 	}
 
-	default DynamicLocationalUniformHolder uniform2i(String name, Supplier<Vector2i> value, ValueUpdateNotifier notifier) {
+	default DynamicLocationalUniformHolder uniform2i(String name, Supplier<Vector2ic> value, ValueUpdateNotifier notifier) {
 		location(name, UniformType.VEC2I).ifPresent(id -> addDynamicUniform(new Vector2IntegerJomlUniform(id, value, notifier), notifier));
 
 		return this;
@@ -50,7 +49,7 @@ public interface DynamicLocationalUniformHolder extends LocationalUniformHolder,
         return this;
     }
 
-	default DynamicUniformHolder uniform4f(String name, Supplier<Vector4f> value, ValueUpdateNotifier notifier) {
+	default DynamicUniformHolder uniform4f(String name, Supplier<Vector4fc> value, ValueUpdateNotifier notifier) {
 		location(name, UniformType.VEC4).ifPresent(id -> addDynamicUniform(new Vector4Uniform(id, value, notifier), notifier));
 
 		return this;
@@ -61,7 +60,7 @@ public interface DynamicLocationalUniformHolder extends LocationalUniformHolder,
         return this;
     }
 
-	default DynamicUniformHolder uniform4i(String name, Supplier<Vector4i> value, ValueUpdateNotifier notifier) {
+	default DynamicUniformHolder uniform4i(String name, Supplier<Vector4ic> value, ValueUpdateNotifier notifier) {
 		location(name, UniformType.VEC4I).ifPresent(id -> addDynamicUniform(new Vector4IntegerJomlUniform(id, value, notifier), notifier));
 
 		return this;

src/main/java/net/coderbot/iris/gl/uniform/DynamicUniformHolder.java

@@ -1,11 +1,10 @@
 package net.coderbot.iris.gl.uniform;
 
 import net.coderbot.iris.gl.state.ValueUpdateNotifier;
-import org.joml.Vector2i;
-import org.joml.Vector3i;
+import org.joml.Vector2ic;
 import org.joml.Vector3ic;
-import org.joml.Vector4f;
-import org.joml.Vector4i;
+import org.joml.Vector4fc;
+import org.joml.Vector4ic;
 
 import java.util.function.DoubleSupplier;
 import java.util.function.IntSupplier;
@@ -16,9 +15,9 @@ public interface DynamicUniformHolder extends UniformHolder {
 	DynamicUniformHolder uniform1f(String name, IntSupplier value, ValueUpdateNotifier notifier);
 	DynamicUniformHolder uniform1f(String name, DoubleSupplier value, ValueUpdateNotifier notifier);
 	DynamicUniformHolder uniform1i(String name, IntSupplier value, ValueUpdateNotifier notifier);
-	DynamicUniformHolder uniform2i(String name, Supplier<Vector2i> value, ValueUpdateNotifier notifier);
+	DynamicUniformHolder uniform2i(String name, Supplier<Vector2ic> value, ValueUpdateNotifier notifier);
     DynamicUniformHolder uniform3i(String name, Supplier<Vector3ic> value, ValueUpdateNotifier notifier);
-	DynamicUniformHolder uniform4f(String name, Supplier<Vector4f> value, ValueUpdateNotifier notifier);
+	DynamicUniformHolder uniform4f(String name, Supplier<Vector4fc> value, ValueUpdateNotifier notifier);
     DynamicUniformHolder uniform4fArray(String name, Supplier<float[]> value, ValueUpdateNotifier notifier);
-	DynamicUniformHolder uniform4i(String name, Supplier<Vector4i> value, ValueUpdateNotifier notifier);
+	DynamicUniformHolder uniform4i(String name, Supplier<Vector4ic> value, ValueUpdateNotifier notifier);
 }

src/main/java/net/coderbot/iris/gl/uniform/LocationalUniformHolder.java

@@ -4,13 +4,13 @@ import net.minecraft.util.Vec3;
 import org.joml.Matrix4f;
 import org.joml.Matrix4fc;
 import org.joml.Vector2f;
-import org.joml.Vector2i;
+import org.joml.Vector2ic;
 import org.joml.Vector3d;
 import org.joml.Vector3f;
 import org.joml.Vector3fc;
 import org.joml.Vector3i;
 import org.joml.Vector3ic;
-import org.joml.Vector4f;
+import org.joml.Vector4fc;
 
 import java.util.OptionalInt;
 import java.util.function.BooleanSupplier;
@@ -66,7 +66,7 @@ public interface LocationalUniformHolder extends UniformHolder {
 	}
 
 	@Override
-	default LocationalUniformHolder uniform2i(UniformUpdateFrequency updateFrequency, String name, Supplier<Vector2i> value) {
+	default LocationalUniformHolder uniform2i(UniformUpdateFrequency updateFrequency, String name, Supplier<Vector2ic> value) {
 		location(name, UniformType.VEC2I).ifPresent(id -> addUniform(updateFrequency, new Vector2IntegerJomlUniform(id, value)));
 
 		return this;
@@ -94,7 +94,7 @@ public interface LocationalUniformHolder extends UniformHolder {
 	}
 
 	@Override
-	default LocationalUniformHolder uniformTruncated3f(UniformUpdateFrequency updateFrequency, String name, Supplier<Vector4f> value) {
+	default LocationalUniformHolder uniformTruncated3f(UniformUpdateFrequency updateFrequency, String name, Supplier<Vector4fc> value) {
 		location(name, UniformType.VEC3).ifPresent(id -> addUniform(updateFrequency, Vector3Uniform.truncated(id, value)));
 
 		return this;
@@ -108,7 +108,7 @@ public interface LocationalUniformHolder extends UniformHolder {
 	}
 
 	@Override
-	default LocationalUniformHolder uniform4f(UniformUpdateFrequency updateFrequency, String name, Supplier<Vector4f> value) {
+	default LocationalUniformHolder uniform4f(UniformUpdateFrequency updateFrequency, String name, Supplier<Vector4fc> value) {
 		location(name, UniformType.VEC4).ifPresent(id -> addUniform(updateFrequency, new Vector4Uniform(id, value)));
 
 		return this;

src/main/java/net/coderbot/iris/gl/uniform/UniformHolder.java

@@ -3,12 +3,12 @@ package net.coderbot.iris.gl.uniform;
 import net.minecraft.util.Vec3;
 import org.joml.Matrix4fc;
 import org.joml.Vector2f;
-import org.joml.Vector2i;
+import org.joml.Vector2ic;
 import org.joml.Vector3d;
 import org.joml.Vector3fc;
 import org.joml.Vector3i;
 import org.joml.Vector3ic;
-import org.joml.Vector4f;
+import org.joml.Vector4fc;
 
 import java.util.function.BooleanSupplier;
 import java.util.function.DoubleSupplier;
@@ -28,7 +28,7 @@ public interface UniformHolder {
 
 	UniformHolder uniform2f(UniformUpdateFrequency updateFrequency, String name, Supplier<Vector2f> value);
 
-	UniformHolder uniform2i(UniformUpdateFrequency updateFrequency, String name, Supplier<Vector2i> value);
+	UniformHolder uniform2i(UniformUpdateFrequency updateFrequency, String name, Supplier<Vector2ic> value);
 
 	UniformHolder uniform3f(UniformUpdateFrequency updateFrequency, String name, Supplier<Vector3fc> value);
 
@@ -36,11 +36,11 @@ public interface UniformHolder {
 
 	UniformHolder uniformVanilla3f(UniformUpdateFrequency updateFrequency, String name, Supplier<Vec3> value);
 
-	UniformHolder uniformTruncated3f(UniformUpdateFrequency updateFrequency, String name, Supplier<Vector4f> value);
+	UniformHolder uniformTruncated3f(UniformUpdateFrequency updateFrequency, String name, Supplier<Vector4fc> value);
 
 	UniformHolder uniform3d(UniformUpdateFrequency updateFrequency, String name, Supplier<Vector3d> value);
 
-	UniformHolder uniform4f(UniformUpdateFrequency updateFrequency, String name, Supplier<Vector4f> value);
+	UniformHolder uniform4f(UniformUpdateFrequency updateFrequency, String name, Supplier<Vector4fc> value);
 
     UniformHolder uniform4fArray(UniformUpdateFrequency updateFrequency, String name, Supplier<float[]> value);
 

src/main/java/net/coderbot/iris/gl/uniform/Vector2IntegerJomlUniform.java

@@ -3,21 +3,22 @@ package net.coderbot.iris.gl.uniform;
 import com.gtnewhorizons.angelica.glsm.RenderSystem;
 import net.coderbot.iris.gl.state.ValueUpdateNotifier;
 import org.joml.Vector2i;
+import org.joml.Vector2ic;
 
 import java.util.function.Supplier;
 
 public class Vector2IntegerJomlUniform extends Uniform {
-	private Vector2i cachedValue;
-	private final Supplier<Vector2i> value;
+	private final Vector2i cachedValue;
+	private final Supplier<Vector2ic> value;
 
-	Vector2IntegerJomlUniform(int location, Supplier<Vector2i> value) {
+	Vector2IntegerJomlUniform(int location, Supplier<Vector2ic> value) {
 		this(location, value, null);
 	}
 
-	Vector2IntegerJomlUniform(int location, Supplier<Vector2i> value, ValueUpdateNotifier notifier) {
+	Vector2IntegerJomlUniform(int location, Supplier<Vector2ic> value, ValueUpdateNotifier notifier) {
 		super(location, notifier);
 
-		this.cachedValue = null;
+		this.cachedValue = new Vector2i();
 		this.value = value;
 	}
 
@@ -31,11 +32,11 @@ public class Vector2IntegerJomlUniform extends Uniform {
 	}
 
 	private void updateValue() {
-		Vector2i newValue = value.get();
+		Vector2ic newValue = value.get();
 
-		if (cachedValue == null || !newValue.equals(cachedValue)) {
-			cachedValue = newValue;
-			RenderSystem.uniform2i(this.location, newValue.x, newValue.y);
+		if (!newValue.equals(cachedValue)) {
+			cachedValue.set(newValue.x(), newValue.y());
+			RenderSystem.uniform2i(this.location, cachedValue.x, cachedValue.y);
 		}
 	}
 }

src/main/java/net/coderbot/iris/gl/uniform/Vector3Uniform.java

@@ -4,7 +4,7 @@ import com.gtnewhorizons.angelica.glsm.RenderSystem;
 import org.joml.Vector3d;
 import org.joml.Vector3f;
 import org.joml.Vector3fc;
-import org.joml.Vector4f;
+import org.joml.Vector4fc;
 
 import java.util.function.Supplier;
 
@@ -31,11 +31,11 @@ public class Vector3Uniform extends Uniform {
 		});
 	}
 
-	static Vector3Uniform truncated(int location, Supplier<Vector4f> value) {
+	static Vector3Uniform truncated(int location, Supplier<Vector4fc> value) {
 		Vector3f held = new Vector3f();
 
 		return new Vector3Uniform(location, () -> {
-			Vector4f updated = value.get();
+			Vector4fc updated = value.get();
 
 			held.set(updated.x(), updated.y(), updated.z());
 

src/main/java/net/coderbot/iris/gl/uniform/Vector4IntegerJomlUniform.java

@@ -3,21 +3,22 @@ package net.coderbot.iris.gl.uniform;
 import com.gtnewhorizons.angelica.glsm.RenderSystem;
 import net.coderbot.iris.gl.state.ValueUpdateNotifier;
 import org.joml.Vector4i;
+import org.joml.Vector4ic;
 
 import java.util.function.Supplier;
 
 public class Vector4IntegerJomlUniform extends Uniform {
-	private Vector4i cachedValue;
-	private final Supplier<Vector4i> value;
+	private final Vector4i cachedValue;
+	private final Supplier<Vector4ic> value;
 
-	Vector4IntegerJomlUniform(int location, Supplier<Vector4i> value) {
+	Vector4IntegerJomlUniform(int location, Supplier<Vector4ic> value) {
 		this(location, value, null);
 	}
 
-	Vector4IntegerJomlUniform(int location, Supplier<Vector4i> value, ValueUpdateNotifier notifier) {
+	Vector4IntegerJomlUniform(int location, Supplier<Vector4ic> value, ValueUpdateNotifier notifier) {
 		super(location, notifier);
 
-		this.cachedValue = null;
+		this.cachedValue = new Vector4i();
 		this.value = value;
 	}
 
@@ -31,11 +32,11 @@ public class Vector4IntegerJomlUniform extends Uniform {
 	}
 
 	private void updateValue() {
-		Vector4i newValue = value.get();
+		Vector4ic newValue = value.get();
 
-		if (cachedValue == null || !newValue.equals(cachedValue)) {
-			cachedValue = newValue;
-			RenderSystem.uniform4i(this.location, newValue.x, newValue.y, newValue.z, newValue.w);
+		if (!newValue.equals(cachedValue)) {
+			cachedValue.set(newValue.x(), newValue.y(), newValue.z(), newValue.w());
+			RenderSystem.uniform4i(this.location, cachedValue.x, cachedValue.y, cachedValue.z, cachedValue.w);
 		}
 	}
 }

src/main/java/net/coderbot/iris/gl/uniform/Vector4Uniform.java

@@ -3,18 +3,19 @@ package net.coderbot.iris.gl.uniform;
 import com.gtnewhorizons.angelica.glsm.RenderSystem;
 import net.coderbot.iris.gl.state.ValueUpdateNotifier;
 import org.joml.Vector4f;
+import org.joml.Vector4fc;
 
 import java.util.function.Supplier;
 
 public class Vector4Uniform extends Uniform {
 	private final Vector4f cachedValue;
-	private final Supplier<Vector4f> value;
+	private final Supplier<Vector4fc> value;
 
-	Vector4Uniform(int location, Supplier<Vector4f> value) {
+	Vector4Uniform(int location, Supplier<Vector4fc> value) {
 		this(location, value, null);
 	}
 
-	Vector4Uniform(int location, Supplier<Vector4f> value, ValueUpdateNotifier notifier) {
+	Vector4Uniform(int location, Supplier<Vector4fc> value, ValueUpdateNotifier notifier) {
 		super(location, notifier);
 
 		this.cachedValue = new Vector4f();
@@ -31,7 +32,7 @@ public class Vector4Uniform extends Uniform {
 	}
 
 	private void updateValue() {
-		Vector4f newValue = value.get();
+		Vector4fc newValue = value.get();
 
 		if (!newValue.equals(cachedValue)) {
 			cachedValue.set(newValue.x(), newValue.y(), newValue.z(), newValue.w());

src/main/java/net/coderbot/iris/layer/GbufferPrograms.java

@@ -4,6 +4,7 @@ import net.coderbot.iris.Iris;
 import net.coderbot.iris.gbuffer_overrides.matching.SpecialCondition;
 import com.gtnewhorizons.angelica.glsm.GLStateManager;
 import net.coderbot.iris.gl.shader.ProgramCreator;
+import net.coderbot.iris.gl.state.StateUpdateNotifiers;
 import net.coderbot.iris.pipeline.WorldRenderingPhase;
 import net.coderbot.iris.pipeline.WorldRenderingPipeline;
 
@@ -11,7 +12,12 @@ public class GbufferPrograms {
 	private static boolean entities;
 	private static boolean blockEntities;
 	private static boolean outline;
-
+	private static Runnable phaseChangeListener;
+	
+	static {
+		StateUpdateNotifiers.phaseChangeNotifier = listener -> phaseChangeListener = listener;
+	}
+	
 	private static void checkReentrancy() {
 		if (entities || blockEntities || outline) {
 			throw new IllegalStateException("GbufferPrograms in weird state, tried to call begin function when entities = "
@@ -106,7 +112,13 @@ public class GbufferPrograms {
 	public static void teardownSpecialRenderCondition() {
 		Iris.getPipelineManager().getPipeline().ifPresent(p -> p.setSpecialCondition(null));
 	}
-
+	
+	public static void runPhaseChangeNotifier() {
+		if (phaseChangeListener != null) {
+			phaseChangeListener.run();
+		}
+	}
+	
 	public static void init() {
 		// Empty initializer to run static
 	}

src/main/java/net/coderbot/iris/pipeline/DeferredWorldRenderingPipeline.java

@@ -41,6 +41,7 @@ import net.coderbot.iris.gl.state.FogMode;
 import net.coderbot.iris.gl.texture.DepthBufferFormat;
 import net.coderbot.iris.gl.texture.TextureType;
 import net.coderbot.iris.helpers.Tri;
+import net.coderbot.iris.layer.GbufferPrograms;
 import net.coderbot.iris.pipeline.transform.PatchShaderType;
 import net.coderbot.iris.pipeline.transform.TransformPatcher;
 import net.coderbot.iris.postprocess.BufferFlipper;
@@ -200,14 +201,17 @@ public class DeferredWorldRenderingPipeline implements WorldRenderingPipeline, R
 	public DeferredWorldRenderingPipeline(ProgramSet programs) {
 		Objects.requireNonNull(programs);
 
-		final Map<Integer, CompletableFuture<Map<PatchShaderType, String>>> prepareTransformFutures = submitCompositeTransforms(programs.getPrepare());
-		final Map<Integer, CompletableFuture<Map<PatchShaderType, String>>> deferredTransformFutures = submitCompositeTransforms(programs.getDeferred());
-		final Map<Integer, CompletableFuture<Map<PatchShaderType, String>>> compositeTransformFutures = submitCompositeTransforms(programs.getComposite());
+		final Map<Integer, CompletableFuture<Map<PatchShaderType, String>>> prepareTransformFutures =
+			submitCompositeTransforms(programs.getPrepare(), TextureStage.PREPARE, programs.getPackDirectives().getTextureMap());
+		final Map<Integer, CompletableFuture<Map<PatchShaderType, String>>> deferredTransformFutures =
+			submitCompositeTransforms(programs.getDeferred(), TextureStage.DEFERRED, programs.getPackDirectives().getTextureMap());
+		final Map<Integer, CompletableFuture<Map<PatchShaderType, String>>> compositeTransformFutures =
+			submitCompositeTransforms(programs.getComposite(), TextureStage.COMPOSITE_AND_FINAL, programs.getPackDirectives().getTextureMap());
 
 		final CompletableFuture<Map<PatchShaderType, String>> finalTransformFuture =
 			programs.getCompositeFinal()
 				.filter(ProgramSource::isValid)
-				.map(DeferredWorldRenderingPipeline::submitCompositeTransform)
+				.map(source -> submitCompositeTransform(source, TextureStage.COMPOSITE_AND_FINAL, programs.getPackDirectives().getTextureMap()))
 				.orElse(null);
 
 		resolver = new ProgramFallbackResolver(programs);
@@ -216,11 +220,13 @@ public class DeferredWorldRenderingPipeline implements WorldRenderingPipeline, R
 		final Optional<ProgramSource> terrainSource = first(programs.getGbuffersTerrain(), programs.getGbuffersTexturedLit(), programs.getGbuffersTextured(), programs.getGbuffersBasic());
 		final Optional<ProgramSource> translucentSource = first(programs.getGbuffersWater(), terrainSource);
 		final Optional<ProgramSource> shadowSource = programs.getShadow();
+		final Optional<ProgramSource> shadowTranslucentSource = first(programs.getShadowWater(), shadowSource);
 
 		// Celeritas terrain transform futures
 		final CompletableFuture<Map<PatchShaderType, String>> celeritasTerrainFuture = terrainSource.map(DeferredWorldRenderingPipeline::submitCeleritasTerrainTransform).orElse(null);
 		final CompletableFuture<Map<PatchShaderType, String>> celeritasTranslucentFuture = translucentSource.map(DeferredWorldRenderingPipeline::submitCeleritasTerrainTransform).orElse(null);
 		final CompletableFuture<Map<PatchShaderType, String>> celeritasShadowFuture = shadowSource.map(DeferredWorldRenderingPipeline::submitCeleritasTerrainTransform).orElse(null);
+		final CompletableFuture<Map<PatchShaderType, String>> celeritasShadowTranslucentFuture = shadowTranslucentSource.map(DeferredWorldRenderingPipeline::submitCeleritasTerrainTransform).orElse(null);
 
 		this.cloudSetting = programs.getPackDirectives().getCloudSetting();
 		this.shouldRenderUnderwaterOverlay = programs.getPackDirectives().underwaterOverlay();
@@ -384,6 +390,7 @@ public class DeferredWorldRenderingPipeline implements WorldRenderingPipeline, R
 				null, null, ProgramId.Weather,
 				// world border uses textured_lit even though it has no lightmap :/
 				null, ProgramId.TexturedLit, ProgramId.TexturedLit,
+				ProgramId.ShadowWater, ProgramId.ShadowWater, ProgramId.ShadowWater,
 				ProgramId.Shadow, ProgramId.Shadow, ProgramId.Shadow
 		};
 
@@ -427,7 +434,7 @@ public class DeferredWorldRenderingPipeline implements WorldRenderingPipeline, R
 			return cachedPasses.computeIfAbsent(Pair.of(id, availability), p -> {
 				final ProgramSource source = resolver.resolveNullable(p.getLeft());
 
-				if (condition == RenderCondition.SHADOW) {
+				if (condition == RenderCondition.SHADOW || condition == RenderCondition.SHADOW_TRANSLUCENT) {
 					if (!shadowDirectives.isShadowEnabled().orElse(shadowRenderTargets != null)) {
 						// shadow is not used
 						return null;
@@ -444,7 +451,8 @@ public class DeferredWorldRenderingPipeline implements WorldRenderingPipeline, R
 				}
 
 				try {
-					return createPass(source, availability, condition == RenderCondition.SHADOW, finalId);
+					return createPass(source, availability,
+						condition == RenderCondition.SHADOW || condition == RenderCondition.SHADOW_TRANSLUCENT, finalId);
 				} catch (Exception e) {
 					throw new RuntimeException("Failed to create pass for " + source.getName() + " for rendering condition "
 						+ condition + " specialized to input availability " + availability, e);
@@ -471,7 +479,9 @@ public class DeferredWorldRenderingPipeline implements WorldRenderingPipeline, R
 				this.shadowRenderer = new ShadowRenderer(programs.getShadow().orElse(null),
 					programs.getPackDirectives(), shadowRenderTargets, shadowCompositeRenderer);
 				Program shadowProgram = table.match(RenderCondition.SHADOW, new InputAvailability(true, true)).getProgram();
-				shadowRenderer.setUsesImages(shadowProgram != null && shadowProgram.getActiveImages() > 0);
+				Program shadowWaterProgram = table.match(RenderCondition.SHADOW_TRANSLUCENT, new InputAvailability(true, true)).getProgram();
+				shadowRenderer.setUsesImages((shadowProgram != null && shadowProgram.getActiveImages() > 0)
+					|| (shadowWaterProgram != null && shadowWaterProgram.getActiveImages() > 0));
 			} else {
 				shadowRenderer = null;
 			}
@@ -588,7 +598,8 @@ public class DeferredWorldRenderingPipeline implements WorldRenderingPipeline, R
 			terrainSource,
 			translucentSource,
 			shadowSource,
-			celeritasTerrainFuture, celeritasTranslucentFuture, celeritasShadowFuture,
+			shadowTranslucentSource,
+			celeritasTerrainFuture, celeritasTranslucentFuture, celeritasShadowFuture, celeritasShadowTranslucentFuture,
 			renderTargets, flippedAfterPrepare, flippedAfterTranslucent,
 			celeritasShadowFb);
 
@@ -695,7 +706,10 @@ public class DeferredWorldRenderingPipeline implements WorldRenderingPipeline, R
 
 	private RenderCondition getCondition(WorldRenderingPhase phase) {
 		if (isRenderingShadow) {
-			return RenderCondition.SHADOW;
+			return switch (phase) {
+				case TERRAIN_TRANSLUCENT, TRIPWIRE -> RenderCondition.SHADOW_TRANSLUCENT;
+				default -> RenderCondition.SHADOW;
+			};
 		}
 
 		if (special != null) {
@@ -771,10 +785,10 @@ public class DeferredWorldRenderingPipeline implements WorldRenderingPipeline, R
 		if (!isRenderingWorld || isRenderingFullScreenPass || isPostChain || !isMainBound) {
 			return;
 		}
-
+		
 		final RenderCondition condition = getCondition(getPhase());
 		final Pass matched = table.match(condition, inputs);
-
+		
 		beginPass(matched);
 	}
 
@@ -1653,12 +1667,14 @@ public class DeferredWorldRenderingPipeline implements WorldRenderingPipeline, R
 	public void setOverridePhase(WorldRenderingPhase phase) {
 		this.overridePhase = phase;
 		matchPass();
+		GbufferPrograms.runPhaseChangeNotifier();
 	}
 
 	@Override
 	public void setPhase(WorldRenderingPhase phase) {
 		this.phase = phase;
 		matchPass();
+		GbufferPrograms.runPhaseChangeNotifier();
 	}
 
 	@Override
@@ -1710,11 +1726,20 @@ public class DeferredWorldRenderingPipeline implements WorldRenderingPipeline, R
 	private static final InputAvailability INPUT_TEXTURE_LIGHTMAP = new InputAvailability(true, true);
 	private static final InputAvailability[] INPUT_AVAILABILITIES = { INPUT_NONE, INPUT_TEXTURE, INPUT_TEXTURE_LIGHTMAP };
 
-	private static CompletableFuture<Map<PatchShaderType, String>> submitCompositeTransform(ProgramSource source) {
-		return Iris.ShaderTransformExecutor.submitTracked(() -> TransformPatcher.patchComposite(source.getVertexSource().orElse(null), source.getGeometrySource().orElse(null), source.getTessControlSource().orElse(null), source.getTessEvalSource().orElse(null), source.getFragmentSource().orElse(null)));
+	private static CompletableFuture<Map<PatchShaderType, String>> submitCompositeTransform(ProgramSource source, TextureStage stage,
+		Object2ObjectMap<Tri<String, TextureType, TextureStage>, String> textureMap) {
+		return Iris.ShaderTransformExecutor.submitTracked(() -> TransformPatcher.patchComposite(
+			source.getVertexSource().orElse(null),
+			source.getGeometrySource().orElse(null),
+			source.getTessControlSource().orElse(null),
+			source.getTessEvalSource().orElse(null),
+			source.getFragmentSource().orElse(null),
+			stage,
+			textureMap));
 	}
 
-	private static Map<Integer, CompletableFuture<Map<PatchShaderType, String>>> submitCompositeTransforms(ProgramSource[] sources) {
+	private static Map<Integer, CompletableFuture<Map<PatchShaderType, String>>> submitCompositeTransforms(ProgramSource[] sources,
+		TextureStage stage, Object2ObjectMap<Tri<String, TextureType, TextureStage>, String> textureMap) {
 		// Count valid sources for initial capacity
 		int count = 0;
 		for (ProgramSource source : sources) {
@@ -1723,7 +1748,7 @@ public class DeferredWorldRenderingPipeline implements WorldRenderingPipeline, R
 		final Map<Integer, CompletableFuture<Map<PatchShaderType, String>>> futures = new HashMap<>(count);
 		for (int i = 0; i < sources.length; i++) {
 			if (sources[i] != null && sources[i].isValid()) {
-				futures.put(i, submitCompositeTransform(sources[i]));
+				futures.put(i, submitCompositeTransform(sources[i], stage, textureMap));
 			}
 		}
 		return futures;

src/main/java/net/coderbot/iris/pipeline/HandRenderer.java

@@ -75,7 +75,7 @@ public class HandRenderer {
 
         return mc.entityRenderer.debugViewDirection <= 0 &&
                mc.gameSettings.thirdPersonView == 0 &&
-               !camera.getEntity().isPlayerSleeping() &&
+               !camera.isSleeping() &&
                !mc.gameSettings.hideGUI &&
                !GameModeUtil.isSpectator() &&
                !mc.playerController.enableEverythingIsScrewedUpMode();

src/main/java/net/coderbot/iris/pipeline/PatchedShaderPrinter.java

@@ -39,56 +39,54 @@ public class PatchedShaderPrinter {
 	}
 
 	public static void debugPatchedShaders(String name, String vertex, String geometry, String tessControl, String tessEval, String fragment, String compute) {
-		if (!Iris.getIrisConfig().areDebugOptionsEnabled()) {
+		if (!prettyPrintShaders && !Iris.getIrisConfig().areDebugOptionsEnabled()) {
 			return;
 		}
-		if (prettyPrintShaders) {
-			final Path debugOutDir = Minecraft.getMinecraft().mcDataDir.toPath().resolve("patched_shaders");
-			if (!outputLocationCleared) {
-				try {
-					if (Files.exists(debugOutDir)) {
-						try (Stream<Path> stream = Files.list(debugOutDir)) {
-							stream.forEach(path -> {
-								try {
-									Files.delete(path);
-								} catch (IOException e) {
-									throw new RuntimeException(e);
-								}
-							});
-						}
-					}
-
-					Files.createDirectories(debugOutDir);
-				} catch (IOException e) {
-					Iris.logger.warn("Failed to initialize debug patched shader source location", e);
-				}
-				outputLocationCleared = true;
-			}
-
+		final Path debugOutDir = Minecraft.getMinecraft().mcDataDir.toPath().resolve("patched_shaders");
+		if (!outputLocationCleared) {
 			try {
-				programCounter++;
-				String prefix = String.format("%03d_", programCounter);
-				if (vertex != null) {
-					Files.write(debugOutDir.resolve(prefix + name + ".vsh"), vertex.getBytes(StandardCharsets.UTF_8));
-				}
-				if (geometry != null) {
-					Files.write(debugOutDir.resolve(prefix + name + ".gsh"), geometry.getBytes(StandardCharsets.UTF_8));
-				}
-				if (tessControl != null) {
-					Files.write(debugOutDir.resolve(prefix + name + ".tcs"), tessControl.getBytes(StandardCharsets.UTF_8));
-				}
-				if (tessEval != null) {
-					Files.write(debugOutDir.resolve(prefix + name + ".tes"), tessEval.getBytes(StandardCharsets.UTF_8));
-				}
-				if (fragment != null) {
-					Files.write(debugOutDir.resolve(prefix + name + ".fsh"), fragment.getBytes(StandardCharsets.UTF_8));
-				}
-				if (compute != null) {
-					Files.write(debugOutDir.resolve(prefix + name + ".csh"), compute.getBytes(StandardCharsets.UTF_8));
+				if (Files.exists(debugOutDir)) {
+					try (Stream<Path> stream = Files.list(debugOutDir)) {
+						stream.forEach(path -> {
+							try {
+								Files.delete(path);
+							} catch (IOException e) {
+								throw new RuntimeException(e);
+							}
+						});
+					}
 				}
+
+				Files.createDirectories(debugOutDir);
 			} catch (IOException e) {
-				Iris.logger.warn("Failed to write debug patched shader source", e);
+				Iris.logger.warn("Failed to initialize debug patched shader source location", e);
 			}
+			outputLocationCleared = true;
+		}
+
+		try {
+			programCounter++;
+			String prefix = String.format("%03d_", programCounter);
+			if (vertex != null) {
+				Files.write(debugOutDir.resolve(prefix + name + ".vsh"), vertex.getBytes(StandardCharsets.UTF_8));
+			}
+			if (geometry != null) {
+				Files.write(debugOutDir.resolve(prefix + name + ".gsh"), geometry.getBytes(StandardCharsets.UTF_8));
+			}
+			if (tessControl != null) {
+				Files.write(debugOutDir.resolve(prefix + name + ".tcs"), tessControl.getBytes(StandardCharsets.UTF_8));
+			}
+			if (tessEval != null) {
+				Files.write(debugOutDir.resolve(prefix + name + ".tes"), tessEval.getBytes(StandardCharsets.UTF_8));
+			}
+			if (fragment != null) {
+				Files.write(debugOutDir.resolve(prefix + name + ".fsh"), fragment.getBytes(StandardCharsets.UTF_8));
+			}
+			if (compute != null) {
+				Files.write(debugOutDir.resolve(prefix + name + ".csh"), compute.getBytes(StandardCharsets.UTF_8));
+			}
+		} catch (IOException e) {
+			Iris.logger.warn("Failed to write debug patched shader source", e);
 		}
 	}
 }

src/main/java/net/coderbot/iris/pipeline/transform/ShaderTransformer.java

@@ -428,6 +428,7 @@ public class ShaderTransformer {
                 // Handle mc_midTexCoord for Celeritas
                 patchMultiTexCoord3(transformer, parameters);
                 replaceMidTexCoord(transformer, IrisExtendedChunkVertexType.MID_TEX_SCALE);
+                replaceMCEntity(transformer, parameters);
                 applyIntelHd4000Workaround(transformer);
                 break;
             case COMPOSITE:
@@ -448,6 +449,7 @@ public class ShaderTransformer {
             default:
                 throw new IllegalStateException("Unknown patch type: " + patchType.name());
         }
+        TextureTransformer.transform(transformer, parameters);
         CompatibilityTransformer.transformEach(transformer, parameters);
     }
 
@@ -493,6 +495,55 @@ public class ShaderTransformer {
 
     }
 
+    /**
+     * Replaces shader-declared mc_Entity (vec2/ivec2/float/int/etc.) with upstream-compatible unpacking
+     * from a single uint attribute. The uint is packed as ((blockId + 1) << 1) | (renderType & 1).
+     */
+    public static void replaceMCEntity(Transformer transformer, Parameters parameters) {
+        if (parameters.type != ShaderType.VERTEX) return;
+
+        final int type = transformer.findType("mc_Entity");
+        if (type != 0) {
+            transformer.removeVariable("mc_Entity");
+        }
+        transformer.replaceExpression("mc_Entity", "iris_Entity");
+        switch (type) {
+            case 0:
+            case GLSLLexer.BOOL:
+                return;
+            case GLSLLexer.FLOAT:
+                transformer.injectFunction("float iris_Entity = float(int(mc_Entity >> 1u) - 1);");
+                break;
+            case GLSLLexer.VEC2:
+                transformer.injectFunction("vec2 iris_Entity = vec2(int(mc_Entity >> 1u) - 1, mc_Entity & 1u);");
+                break;
+            case GLSLLexer.VEC3:
+                transformer.injectFunction("vec3 iris_Entity = vec3(int(mc_Entity >> 1u) - 1, mc_Entity & 1u, 0.0);");
+                break;
+            case GLSLLexer.VEC4:
+                transformer.injectFunction("vec4 iris_Entity = vec4(int(mc_Entity >> 1u) - 1, mc_Entity & 1u, 0.0, 1.0);");
+                break;
+            case GLSLLexer.UINT:
+                transformer.injectFunction("uint iris_Entity = uint(int(mc_Entity >> 1u) - 1);");
+                break;
+            case GLSLLexer.INT:
+                transformer.injectFunction("int iris_Entity = int(mc_Entity >> 1u) - 1;");
+                break;
+            case GLSLLexer.IVEC2:
+                transformer.injectFunction("ivec2 iris_Entity = ivec2(int(mc_Entity >> 1u) - 1, mc_Entity & 1u);");
+                break;
+            case GLSLLexer.IVEC3:
+                transformer.injectFunction("ivec3 iris_Entity = ivec3(int(mc_Entity >> 1u) - 1, mc_Entity & 1u, 0);");
+                break;
+            case GLSLLexer.IVEC4:
+                transformer.injectFunction("ivec4 iris_Entity = ivec4(int(mc_Entity >> 1u) - 1, mc_Entity & 1u, 0, 1);");
+                break;
+            default:
+                throw new IllegalStateException("Got an invalid format mc_Entity (type token " + type + ").");
+        }
+        transformer.injectVariable("in uint mc_Entity;");
+    }
+
     public static void addIfNotExists(Transformer transformer, String name, String code) {
         if (!transformer.hasVariable(name)) {
             transformer.injectVariable(code);

src/main/java/net/coderbot/iris/pipeline/transform/TextureTransformer.java

@@ -0,0 +1,51 @@
+package net.coderbot.iris.pipeline.transform;
+
+import it.unimi.dsi.fastutil.objects.Object2ObjectMap;
+import net.coderbot.iris.gl.texture.TextureType;
+import net.coderbot.iris.helpers.Tri;
+import net.coderbot.iris.pipeline.transform.parameter.Parameters;
+import net.coderbot.iris.shaderpack.texture.TextureStage;
+import org.taumc.glsl.Transformer;
+import org.taumc.glsl.grammar.GLSLLexer;
+
+final class TextureTransformer {
+	private TextureTransformer() {
+	}
+
+	static void transform(Transformer transformer, Parameters parameters) {
+		final Object2ObjectMap<Tri<String, TextureType, TextureStage>, String> textureMap = parameters.getTextureMap();
+		if (textureMap == null || textureMap.isEmpty()) {
+			return;
+		}
+
+		final TextureStage stage = parameters.getTextureStage();
+		textureMap.forEach((key, replacement) -> {
+			if (key.third() != stage) {
+				return;
+			}
+
+			final String name = key.first();
+			final int type = transformer.findType(name);
+			if (type != 0 && isTypeValid(key.second(), type)) {
+				transformer.rename(name, replacement);
+			}
+		});
+	}
+
+	private static boolean isTypeValid(TextureType expectedType, int extractedType) {
+		return switch (expectedType) {
+			case TEXTURE_1D -> extractedType == GLSLLexer.SAMPLER1D ||
+				extractedType == GLSLLexer.ISAMPLER1D ||
+				extractedType == GLSLLexer.USAMPLER1D;
+			case TEXTURE_RECTANGLE -> extractedType == GLSLLexer.SAMPLER2DRECT ||
+				extractedType == GLSLLexer.ISAMPLER2DRECT ||
+				extractedType == GLSLLexer.USAMPLER2DRECT;
+			case TEXTURE_2D -> extractedType == GLSLLexer.SAMPLER2D ||
+				extractedType == GLSLLexer.ISAMPLER2D ||
+				extractedType == GLSLLexer.USAMPLER2D;
+			case TEXTURE_3D -> extractedType == GLSLLexer.SAMPLER3D ||
+				extractedType == GLSLLexer.ISAMPLER3D ||
+				extractedType == GLSLLexer.USAMPLER3D;
+		};
+	}
+}

src/main/java/net/coderbot/iris/pipeline/transform/TransformPatcher.java

@@ -120,10 +120,6 @@ public class TransformPatcher {
         return patchComposite(vertex, geometry, null, null, fragment, TextureStage.COMPOSITE_AND_FINAL, null);
     }
 
-    public static Map<PatchShaderType, String> patchComposite(String vertex, String geometry, String tessControl, String tessEval, String fragment) {
-        return patchComposite(vertex, geometry, tessControl, tessEval, fragment, TextureStage.COMPOSITE_AND_FINAL, null);
-    }
-
     public static Map<PatchShaderType, String> patchComposite(String vertex, String geometry, String tessControl, String tessEval, String fragment, TextureStage stage, Object2ObjectMap<Tri<String, TextureType, TextureStage>, String> textureMap) {
         return transform(vertex, geometry, tessControl, tessEval, fragment, new TextureStageParameters(Patch.COMPOSITE, stage, textureMap));
     }

src/main/java/net/coderbot/iris/postprocess/FinalPassRenderer.java

@@ -146,7 +146,7 @@ public class FinalPassRenderer {
 		GLStateManager.glBindFramebuffer(GL30.GL_READ_FRAMEBUFFER, 0);
 	}
 
-	private static Map<PatchShaderType, String> getTransformed(ProgramSource source, CompletableFuture<Map<PatchShaderType, String>> precomputedTransformFuture, String stageName) {
+	private Map<PatchShaderType, String> getTransformed(ProgramSource source, CompletableFuture<Map<PatchShaderType, String>> precomputedTransformFuture, String stageName) {
 		if (precomputedTransformFuture != null) {
 			try {
 				final Map<PatchShaderType, String> result = precomputedTransformFuture.join();
@@ -157,7 +157,14 @@ public class FinalPassRenderer {
 				throw new RuntimeException("Shader transformation failed for '" + source.getName() + "' in stage '" + stageName + "'", e.getCause() != null ? e.getCause() : e);
 			}
 		}
-		return TransformPatcher.patchComposite(source.getVertexSource().orElseThrow(NullPointerException::new), source.getGeometrySource().orElse(null), source.getTessControlSource().orElse(null), source.getTessEvalSource().orElse(null), source.getFragmentSource().orElseThrow(NullPointerException::new));
+		return TransformPatcher.patchComposite(
+			source.getVertexSource().orElseThrow(NullPointerException::new),
+			source.getGeometrySource().orElse(null),
+			source.getTessControlSource().orElse(null),
+			source.getTessEvalSource().orElse(null),
+			source.getFragmentSource().orElseThrow(NullPointerException::new),
+			TextureStage.COMPOSITE_AND_FINAL,
+			pipeline != null ? pipeline.getTextureMap() : null);
 	}
 
 	private static final class Pass {

src/main/java/net/coderbot/iris/shaderpack/IdMap.java

@@ -1,5 +1,6 @@
 package net.coderbot.iris.shaderpack;
 
+import com.gtnewhorizons.angelica.config.AngelicaConfig;
 import it.unimi.dsi.fastutil.ints.Int2ObjectMap;
 import it.unimi.dsi.fastutil.ints.Int2ObjectMaps;
 import it.unimi.dsi.fastutil.ints.Int2ObjectOpenHashMap;
@@ -58,14 +59,42 @@ public class IdMap {
 	private Map<NamespacedId, BlockRenderType> blockRenderTypeMap;
 
 	IdMap(Path shaderPath, ShaderPackOptions shaderPackOptions, Iterable<StringPair> environmentDefines) {
-		itemIdMap = loadProperties(shaderPath, "item.properties", shaderPackOptions, environmentDefines).map(IdMap::parseItemIdMap).orElse(Object2IntMaps.emptyMap());
+		// Check if block.properties has a dedicated 1.7.10 section
+		String rawBlockProperties = readProperties(shaderPath, "block.properties");
+		boolean hasLegacySection = rawBlockProperties != null
+			&& rawBlockProperties.contains("MC_VERSION") && rawBlockProperties.contains("10710");
 
-		entityIdMap = loadProperties(shaderPath, "entity.properties", shaderPackOptions, environmentDefines).map(IdMap::parseEntityIdMap).orElse(Object2IntMaps.emptyMap());
+		Iterable<StringPair> resolvedDefines;
+		if (hasLegacySection) {
+			// Pack has a 1.7.10 section
+			resolvedDefines = environmentDefines;
+			loadProperties(shaderPath, "block.properties", shaderPackOptions, environmentDefines).ifPresent(blockProperties -> {
+				blockPropertiesMap = parseBlockMap(blockProperties, "block.", "block.properties");
+				blockRenderTypeMap = parseRenderTypeMap(blockProperties, "layer.", "block.properties");
+			});
+		} else {
+			// No 1.7.10 section, use modern MC_VERSION and convert entries
+			ArrayList<StringPair> modernDefines = new ArrayList<>();
+			for (StringPair define : environmentDefines) {
+				if (!"MC_VERSION".equals(define.getKey())) {
+					modernDefines.add(define);
+				}
+			}
 
-		loadProperties(shaderPath, "block.properties", shaderPackOptions, environmentDefines).ifPresent(blockProperties -> {
-			blockPropertiesMap = parseBlockMap(blockProperties, "block.", "block.properties");
-			blockRenderTypeMap = parseRenderTypeMap(blockProperties, "layer.", "block.properties");
-		});
+			String modernVersion = AngelicaConfig.modernFallbackMcVersion > 0
+				? String.valueOf(AngelicaConfig.modernFallbackMcVersion) : "260101";
+			modernDefines.add(new StringPair("MC_VERSION", modernVersion));
+			resolvedDefines = modernDefines;
+
+			loadProperties(shaderPath, "block.properties", shaderPackOptions, modernDefines).ifPresent(blockProperties -> {
+				blockPropertiesMap = parseBlockMap(blockProperties, "block.", "block.properties");
+				blockRenderTypeMap = parseRenderTypeMap(blockProperties, "layer.", "block.properties");
+				blockPropertiesMap = LegacyIdMap.convertModernBlockEntries(blockPropertiesMap);
+			});
+		}
+
+		itemIdMap = loadProperties(shaderPath, "item.properties", shaderPackOptions, resolvedDefines).map(IdMap::parseItemIdMap).orElse(Object2IntMaps.emptyMap());
+		entityIdMap = loadProperties(shaderPath, "entity.properties", shaderPackOptions, resolvedDefines).map(IdMap::parseEntityIdMap).orElse(Object2IntMaps.emptyMap());
 
 		// TODO: Properly override block render layers
 

src/main/java/net/coderbot/iris/shaderpack/LegacyIdMap.java

@@ -3,6 +3,7 @@ package net.coderbot.iris.shaderpack;
 import com.google.common.collect.ImmutableList;
 import it.unimi.dsi.fastutil.Function;
 import it.unimi.dsi.fastutil.ints.Int2ObjectMap;
+import it.unimi.dsi.fastutil.ints.Int2ObjectOpenHashMap;
 import net.coderbot.iris.shaderpack.materialmap.BlockEntry;
 import net.coderbot.iris.shaderpack.materialmap.NamespacedId;
 
@@ -10,6 +11,7 @@ import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collections;
 import java.util.List;
+import java.util.Map;
 
 public class LegacyIdMap {
 	private static final ImmutableList<String> COLORS =
@@ -19,6 +21,11 @@ public class LegacyIdMap {
 	private static final ImmutableList<String> WOOD_TYPES =
 			ImmutableList.of("oak", "birch", "jungle", "spruce", "acacia", "dark_oak");
 
+	private static final Map<String, String> MODERN_TO_LEGACY_BLOCK_IDS = Map.of(
+			"grass", "tallgrass",
+			"grass_block", "grass"
+	);
+
 	public static void addLegacyValues(Int2ObjectMap<List<BlockEntry>> blockIdMap) {
 		add(blockIdMap, 1, block("stone"), block("granite"), block("diorite"), block("andesite"));
 		add(blockIdMap, 2, block("grass_block"));
@@ -78,6 +85,32 @@ public class LegacyIdMap {
 		// TODO: 76 -> redstone_torch (on)
 	}
 
+	public static Int2ObjectMap<List<BlockEntry>> convertModernBlockEntries(Int2ObjectMap<List<BlockEntry>> blockIdMap) {
+		Int2ObjectMap<List<BlockEntry>> converted = new Int2ObjectOpenHashMap<>();
+
+		blockIdMap.forEach((intId, entries) -> {
+			List<BlockEntry> convertedEntries = new ArrayList<>(entries.size());
+			for (BlockEntry entry : entries) {
+				NamespacedId id = entry.getId();
+				if (!"minecraft".equals(id.getNamespace())) {
+					convertedEntries.add(entry);
+					continue;
+				}
+
+				String convertedName = MODERN_TO_LEGACY_BLOCK_IDS.get(id.getName());
+				if (convertedName == null) {
+					convertedEntries.add(entry);
+					continue;
+				}
+
+				convertedEntries.add(new BlockEntry(new NamespacedId(id.getNamespace(), convertedName), entry.getMetas()));
+			}
+			converted.put(intId, Collections.unmodifiableList(convertedEntries));
+		});
+
+		return converted;
+	}
+
 	private static BlockEntry block(String name) {
 		return new BlockEntry(new NamespacedId("minecraft", name), Collections.emptySet());
 	}

src/main/java/net/coderbot/iris/shaderpack/ProgramSet.java

@@ -16,6 +16,7 @@ public class ProgramSet {
 	private final PackDirectives packDirectives;
 
 	private final ProgramSource shadow;
+	private final ProgramSource shadowWater;
 	private final ComputeSource[] shadowCompute;
 
 	private final ProgramSource[] shadowcomp;
@@ -80,6 +81,8 @@ public class ProgramSet {
 		// - https://github.com/IrisShaders/Iris/issues/987
 		this.shadow = readProgramSource(directory, sourceProvider, "shadow", this, shaderProperties,
 				BlendModeOverride.OFF);
+		this.shadowWater = readProgramSource(directory, sourceProvider, "shadow_water", this, shaderProperties,
+				BlendModeOverride.OFF);
 		this.shadowCompute = readComputeArray(directory, sourceProvider, "shadow");
 
 		this.shadowcomp = readProgramArray(directory, sourceProvider, "shadowcomp", shaderProperties);
@@ -218,6 +221,7 @@ public class ProgramSet {
 		List<ComputeSource> computes = new ArrayList<>();
 
 		programs.add(shadow);
+		programs.add(shadowWater);
 		programs.addAll(Arrays.asList(shadowcomp));
 		programs.addAll(Arrays.asList(begin));
 		programs.addAll(Arrays.asList(prepare));
@@ -302,6 +306,10 @@ public class ProgramSet {
 		return shadow.requireValid();
 	}
 
+	public Optional<ProgramSource> getShadowWater() {
+		return shadowWater.requireValid();
+	}
+
 	public ProgramSource[] getShadowComposite() {
 		return shadowcomp;
 	}
@@ -413,6 +421,7 @@ public class ProgramSet {
 	public Optional<ProgramSource> get(ProgramId programId) {
 		return switch (programId) {
 			case Shadow -> getShadow();
+			case ShadowWater -> first(getShadowWater(), getShadow());
 			case Basic -> getGbuffersBasic();
 			case Line -> gbuffersLine.requireValid();
 			case Textured -> getGbuffersTextured();

src/main/java/net/coderbot/iris/shaderpack/loading/ProgramId.java

@@ -14,6 +14,7 @@ public enum ProgramId {
 	Shadow(ProgramGroup.Shadow, ""),
 	ShadowSolid(ProgramGroup.Shadow, "solid", Shadow),
 	ShadowCutout(ProgramGroup.Shadow, "cutout", Shadow),
+	ShadowWater(ProgramGroup.Shadow, "water", Shadow, BlendModeOverride.OFF),
 
 	Basic(ProgramGroup.Gbuffers, "basic"),
 	Line(ProgramGroup.Gbuffers, "line", Basic),

src/main/java/net/coderbot/iris/shadows/ShadowCompositeRenderer.java

@@ -263,7 +263,9 @@ public class ShadowCompositeRenderer {
                 source.getGeometrySource().orElse(null),
                 source.getTessControlSource().orElse(null),
                 source.getTessEvalSource().orElse(null),
-                source.getFragmentSource().orElseThrow(NullPointerException::new));
+                source.getFragmentSource().orElseThrow(NullPointerException::new),
+                TextureStage.SHADOWCOMP,
+                pipeline.getTextureMap());
         String vertex = transformed.get(PatchShaderType.VERTEX);
         String geometry = transformed.get(PatchShaderType.GEOMETRY);
         String tessControl = transformed.get(PatchShaderType.TESS_CONTROL);

src/main/java/net/coderbot/iris/uniforms/CapturedRenderingState.java

@@ -1,6 +1,7 @@
 package net.coderbot.iris.uniforms;
 
 import lombok.Getter;
+import lombok.Setter;
 import net.coderbot.iris.gl.state.ValueUpdateNotifier;
 
 import org.joml.Vector4f;
@@ -8,7 +9,8 @@ import org.joml.Vector4f;
 public class CapturedRenderingState {
 	public static final CapturedRenderingState INSTANCE = new CapturedRenderingState();
 
-	@Getter
+	@Setter
+    @Getter
     private float tickDelta;
 	@Getter
     private int currentRenderedBlockEntity;
@@ -29,10 +31,6 @@ public class CapturedRenderingState {
 	private CapturedRenderingState() {
 	}
 
-	public void setTickDelta(float tickDelta) {
-		this.tickDelta = tickDelta;
-	}
-
     public void setCurrentBlockEntity(int entity) {
 		this.currentRenderedBlockEntity = entity;
 
@@ -47,6 +45,7 @@ public class CapturedRenderingState {
 		if (this.entityIdListener != null) {
 			this.entityIdListener.run();
 		}
+        setCurrentRenderedItem(0);
 	}
 
     public void setCurrentEntityColor(float r, float g, float b, float a) {

src/main/java/net/coderbot/iris/uniforms/CommonUniforms.java

@@ -9,6 +9,7 @@ import com.gtnewhorizons.angelica.client.rendering.TextureTracker;
 import com.gtnewhorizons.angelica.mixins.interfaces.EntityRendererAccessor;
 import net.coderbot.iris.compat.dh.DHCompat;
 import net.coderbot.iris.gl.state.FogMode;
+import net.coderbot.iris.gl.state.StateUpdateNotifiers;
 import net.coderbot.iris.gl.state.ValueUpdateNotifier;
 import net.coderbot.iris.gl.uniform.DynamicUniformHolder;
 import net.coderbot.iris.gl.uniform.UniformHolder;
@@ -40,9 +41,12 @@ import static net.coderbot.iris.gl.uniform.UniformUpdateFrequency.ONCE;
 public final class CommonUniforms {
 	private static final Minecraft client = Minecraft.getMinecraft();
 	private static final Vector2i ZERO_VECTOR_2i = new Vector2i();
-	private static final Vector4i ZERO_VECTOR_4i = new Vector4i(0, 0, 0, 0);
 	private static final Vector3d ZERO_VECTOR_3d = new Vector3d();
 
+	// Scratch vectors for push-notified suppliers -- GL thread only, never escapes
+	private static final Vector2i scratch2i = new Vector2i();
+	private static final Vector4i scratch4i = new Vector4i();
+
 	private CommonUniforms() {
 		// no construction allowed
 	}
@@ -78,29 +82,29 @@ public final class CommonUniforms {
 			final AbstractTexture texture = TextureTracker.INSTANCE.getTexture(glId);
 			if (texture instanceof TextureMap) {
 				final TextureInfo info = TextureInfoCache.INSTANCE.getInfo(glId);
-				return new Vector2i(info.getWidth(), info.getHeight());
+				return scratch2i.set(info.getWidth(), info.getHeight());
 			}
 
-			return ZERO_VECTOR_2i;
-		}, ValueUpdateNotifier.NONE);
+			return scratch2i.set(0, 0);
+		}, StateUpdateNotifiers.bindTextureNotifier);
 
 		uniforms.uniform2i("gtextureSize", () -> {
 			final int glId = GLStateManager.getBoundTextureForServerState(0);
 
 			final TextureInfo info = TextureInfoCache.INSTANCE.getInfo(glId);
-			return new Vector2i(info.getWidth(), info.getHeight());
+			return scratch2i.set(info.getWidth(), info.getHeight());
 
-		}, ValueUpdateNotifier.NONE);
+		}, StateUpdateNotifiers.bindTextureNotifier);
 
 		uniforms.uniform4i("blendFunc", () -> {
             if(GLStateManager.getBlendMode().isEnabled()) {
                 final BlendState blend = GLStateManager.getBlendState();
-                return new Vector4i(blend.getSrcRgb(), blend.getDstRgb(), blend.getSrcAlpha(), blend.getDstAlpha());
+                return scratch4i.set(blend.getSrcRgb(), blend.getDstRgb(), blend.getSrcAlpha(), blend.getDstAlpha());
             }
-            return ZERO_VECTOR_4i;
-		}, ValueUpdateNotifier.NONE);
+            return scratch4i.set(0, 0, 0, 0);
+		}, StateUpdateNotifiers.blendFuncNotifier);
 
-		uniforms.uniform1i("renderStage", () -> GbufferPrograms.getCurrentPhase().ordinal(), ValueUpdateNotifier.NONE);
+		uniforms.uniform1i("renderStage", () -> GbufferPrograms.getCurrentPhase().ordinal(), StateUpdateNotifiers.phaseChangeNotifier);
 
         uniforms.uniform4f("entityColor", CapturedRenderingState.INSTANCE::getCurrentEntityColor, CapturedRenderingState.INSTANCE.getEntityColorNotifier());
 

src/main/java/net/coderbot/iris/uniforms/FogUniforms.java

@@ -2,6 +2,7 @@ package net.coderbot.iris.uniforms;
 
 import com.gtnewhorizons.angelica.glsm.GLStateManager;
 import net.coderbot.iris.gl.state.FogMode;
+import net.coderbot.iris.gl.state.StateUpdateNotifiers;
 import net.coderbot.iris.gl.state.ValueUpdateNotifier;
 import net.coderbot.iris.gl.uniform.DynamicUniformHolder;
 import net.coderbot.iris.gl.uniform.UniformUpdateFrequency;
@@ -19,12 +20,12 @@ public class FogUniforms {
 			uniforms.uniform1i("fogMode", () -> {
 				if (!GLStateManager.getFogMode().isEnabled()) return 0;
 				return GLStateManager.getFogState().getFogMode();
-			}, ValueUpdateNotifier.NONE);
+			}, StateUpdateNotifiers.fogModeNotifier);
 			uniforms.uniform1i("fogShape", () -> 0, ValueUpdateNotifier.NONE);
 		}
 
-		uniforms.uniform1f("fogDensity", () -> GLStateManager.getFogState().getDensity(), ValueUpdateNotifier.NONE);
-		uniforms.uniform1f("fogStart", () -> GLStateManager.getFogState().getStart(), ValueUpdateNotifier.NONE);
-		uniforms.uniform1f("fogEnd", () -> GLStateManager.getFogState().getEnd(), ValueUpdateNotifier.NONE);
+		uniforms.uniform1f("fogDensity", () -> GLStateManager.getFogState().getDensity(), StateUpdateNotifiers.fogDensityNotifier);
+		uniforms.uniform1f("fogStart", () -> GLStateManager.getFogState().getStart(), StateUpdateNotifiers.fogStartNotifier);
+		uniforms.uniform1f("fogEnd", () -> GLStateManager.getFogState().getEnd(), StateUpdateNotifiers.fogEndNotifier);
 	}
 }

src/main/java/net/coderbot/iris/uniforms/ItemMaterialHelper.java

@@ -2,8 +2,6 @@ package net.coderbot.iris.uniforms;
 
 import it.unimi.dsi.fastutil.ints.Int2IntMap;
 import it.unimi.dsi.fastutil.ints.Int2IntOpenHashMap;
-import it.unimi.dsi.fastutil.ints.IntOpenHashSet;
-import it.unimi.dsi.fastutil.ints.IntSet;
 import it.unimi.dsi.fastutil.objects.Object2IntFunction;
 import it.unimi.dsi.fastutil.objects.Reference2ObjectMap;
 import it.unimi.dsi.fastutil.objects.Reference2ObjectOpenHashMap;
@@ -22,8 +20,6 @@ import net.minecraft.util.ResourceLocation;
 public class ItemMaterialHelper {
     private static final Reference2ObjectMap<Item, Int2IntMap> MATERIAL_CACHE = new Reference2ObjectOpenHashMap<>();
     private static final int CACHE_MISS_SENTINEL = Integer.MIN_VALUE;
-    public static final IntSet WARNED_UNKNOWN_ARMOR_INDICES = new IntOpenHashSet();
-
     /**
      * Get the material ID for an ItemStack.
      * For ItemBlock: checks block.properties first, then item.properties.
@@ -114,6 +110,5 @@ public class ItemMaterialHelper {
      */
     public static void clearCache() {
         MATERIAL_CACHE.clear();
-        WARNED_UNKNOWN_ARMOR_INDICES.clear();
     }
 }

src/main/java/net/coderbot/iris/uniforms/custom/CustomUniformFixedInputUniformsHolder.java

@@ -22,12 +22,13 @@ import net.minecraft.util.Vec3;
 import org.joml.Matrix4f;
 import org.joml.Matrix4fc;
 import org.joml.Vector2f;
-import org.joml.Vector2i;
+import org.joml.Vector2ic;
 import org.joml.Vector3d;
 import org.joml.Vector3f;
 import org.joml.Vector3fc;
 import org.joml.Vector3ic;
 import org.joml.Vector4f;
+import org.joml.Vector4fc;
 
 import java.util.Collection;
 import java.util.Map;
@@ -112,7 +113,7 @@ public class CustomUniformFixedInputUniformsHolder {
 		}
 
 		@Override
-		public Builder uniform2i(UniformUpdateFrequency updateFrequency, String name, Supplier<Vector2i> value) {
+		public Builder uniform2i(UniformUpdateFrequency updateFrequency, String name, Supplier<Vector2ic> value) {
 			return this.put(name, new Int2VectorCachedUniform(name, updateFrequency, value));
 		}
 
@@ -132,10 +133,10 @@ public class CustomUniformFixedInputUniformsHolder {
         }
 
         @Override
-		public Builder uniformTruncated3f(UniformUpdateFrequency updateFrequency, String name, Supplier<Vector4f> value) {
+		public Builder uniformTruncated3f(UniformUpdateFrequency updateFrequency, String name, Supplier<Vector4fc> value) {
 			Vector3f held = new Vector3f();
 			return this.put(name, new Float3VectorCachedUniform(name, updateFrequency, () -> {
-				Vector4f vec = value.get();
+				final Vector4fc vec = value.get();
 				held.set(vec.x(), vec.y(), vec.z());
 				return held;
 			}));
@@ -152,10 +153,10 @@ public class CustomUniformFixedInputUniformsHolder {
 		}
 
 		@Override
-		public UniformHolder uniform4f(UniformUpdateFrequency updateFrequency, String name, Supplier<Vector4f> value) {
+		public UniformHolder uniform4f(UniformUpdateFrequency updateFrequency, String name, Supplier<Vector4fc> value) {
 			Vector4f held = new Vector4f();
 			return this.put(name, new Float4VectorCachedUniform(name, updateFrequency, () -> {
-				Vector4f vec = value.get();
+				final Vector4fc vec = value.get();
 				held.set(vec.x(), vec.y(), vec.z(), vec.w());
 				return held;
 			}));

src/main/java/net/coderbot/iris/uniforms/custom/cached/Float4VectorCachedUniform.java

@@ -3,14 +3,23 @@ package net.coderbot.iris.uniforms.custom.cached;
 import net.coderbot.iris.gl.uniform.UniformUpdateFrequency;
 import net.coderbot.iris.parsing.VectorType;
 import org.joml.Vector4f;
+import org.joml.Vector4fc;
 import com.gtnewhorizons.angelica.glsm.GLStateManager;
 
 import java.util.function.Supplier;
 
 public class Float4VectorCachedUniform extends VectorCachedUniform<Vector4f> {
 
-	public Float4VectorCachedUniform(String name, UniformUpdateFrequency updateFrequency, Supplier<Vector4f> supplier) {
-		super(name, updateFrequency, new Vector4f(), supplier);
+	public Float4VectorCachedUniform(String name, UniformUpdateFrequency updateFrequency, Supplier<Vector4fc> supplier) {
+		super(name, updateFrequency, new Vector4f(), adapt(supplier));
+	}
+
+	private static Supplier<Vector4f> adapt(Supplier<Vector4fc> supplier) {
+		final Vector4f scratch = new Vector4f();
+		return () -> {
+			final Vector4fc v = supplier.get();
+			return scratch.set(v.x(), v.y(), v.z(), v.w());
+		};
 	}
 
 	@Override

src/main/java/net/coderbot/iris/uniforms/custom/cached/Int2VectorCachedUniform.java

@@ -4,14 +4,23 @@ import kroppeb.stareval.function.FunctionReturn;
 import net.coderbot.iris.gl.uniform.UniformUpdateFrequency;
 import net.coderbot.iris.parsing.VectorType;
 import org.joml.Vector2i;
+import org.joml.Vector2ic;
 import com.gtnewhorizons.angelica.glsm.GLStateManager;
 
 import java.util.function.Supplier;
 
 public class Int2VectorCachedUniform extends VectorCachedUniform<Vector2i> {
 
-	public Int2VectorCachedUniform(String name, UniformUpdateFrequency updateFrequency, Supplier<Vector2i> supplier) {
-		super(name, updateFrequency, new Vector2i(), supplier);
+	public Int2VectorCachedUniform(String name, UniformUpdateFrequency updateFrequency, Supplier<Vector2ic> supplier) {
+		super(name, updateFrequency, new Vector2i(), adapt(supplier));
+	}
+
+	private static Supplier<Vector2i> adapt(Supplier<Vector2ic> supplier) {
+		final Vector2i scratch = new Vector2i();
+		return () -> {
+			final Vector2ic v = supplier.get();
+			return scratch.set(v.x(), v.y());
+		};
 	}
 
 	@Override

src/main/java/net/coderbot/iris/uniforms/transforms/SmoothedVec2f.java

@@ -2,7 +2,7 @@ package net.coderbot.iris.uniforms.transforms;
 
 import net.coderbot.iris.uniforms.FrameUpdateNotifier;
 import org.joml.Vector2f;
-import org.joml.Vector2i;
+import org.joml.Vector2ic;
 
 import java.util.function.Supplier;
 
@@ -10,9 +10,9 @@ public class SmoothedVec2f implements Supplier<Vector2f> {
 	private final SmoothedFloat x;
 	private final SmoothedFloat y;
 
-	public SmoothedVec2f(float halfLifeUp, float halfLifeDown, Supplier<Vector2i> unsmoothed, FrameUpdateNotifier updateNotifier) {
-		x = new SmoothedFloat(halfLifeUp, halfLifeDown, () -> unsmoothed.get().x, updateNotifier);
-		y = new SmoothedFloat(halfLifeUp, halfLifeDown, () -> unsmoothed.get().y, updateNotifier);
+	public SmoothedVec2f(float halfLifeUp, float halfLifeDown, Supplier<Vector2ic> unsmoothed, FrameUpdateNotifier updateNotifier) {
+		x = new SmoothedFloat(halfLifeUp, halfLifeDown, () -> unsmoothed.get().x(), updateNotifier);
+		y = new SmoothedFloat(halfLifeUp, halfLifeDown, () -> unsmoothed.get().y(), updateNotifier);
 	}
 
 	@Override