Merge remote-tracking branch 'origin/1.18/dev' into 1.18/fabric/dev

Conflicts:
	build.gradle
	gradle.properties
	src/main/java/com/jozufozu/flywheel/core/QuadConverter.java
	src/main/java/com/jozufozu/flywheel/core/crumbling/CrumblingRenderer.java
	src/main/java/com/jozufozu/flywheel/core/vertex/BlockVertexList.java
	src/main/java/com/jozufozu/flywheel/event/ForgeEvents.java
	src/main/java/com/jozufozu/flywheel/mixin/ChunkRebuildHooksMixin.java
	src/main/java/com/jozufozu/flywheel/mixin/InstanceAddMixin.java
	src/main/java/com/jozufozu/flywheel/mixin/LevelRendererMixin.java

.editorconfig

@@ -13,6 +13,17 @@ insert_final_newline = true
 [*.json]
 indent_style = space
 indent_size = 2
+max_line_length = 500
+ij_json_keep_blank_lines_in_code = 0
+ij_json_keep_indents_on_empty_lines = false
+ij_json_keep_line_breaks = true
+ij_json_space_after_colon = true
+ij_json_space_after_comma = true
+ij_json_space_before_colon = true
+ij_json_space_before_comma = false
+ij_json_spaces_within_braces = true
+ij_json_spaces_within_brackets = false
+ij_json_wrap_long_lines = false
 
 [*.java]
 indent_style = tab

.github/ISSUE_TEMPLATE/bug_report.yml

@@ -59,6 +59,10 @@ body:
             label: Mod Version
             description: The version of the mod you were using when the bug occured
             options:
+                - "0.6.8"
+                - "0.6.7"
+                - "0.6.6"
+                - "0.6.5"
                 - "0.6.4"
                 - "0.6.3"
                 - "0.6.2"
@@ -77,6 +81,8 @@ body:
             label: Minecraft Version
             description: The version of Minecraft you were using when the bug occured
             options:
+                - "1.19.2"
+                - "1.18.2"
                 - "1.18.1"
                 - "1.17.1"
         validations:

build.gradle

@@ -71,6 +71,14 @@ dependencies {
     modCompileOnly 'io.vram:frex-fabric-mc118:6.0.263'
 }
 
+loom {
+    runs {
+        client {
+            property('flw.loadRenderDoc', 'true')
+        }
+    }
+}
+
 processResources {
     inputs.property 'version', project.version
 

gradle.properties

@@ -2,7 +2,7 @@ org.gradle.jvmargs = -Xmx3G
 org.gradle.daemon = false
 
 # mod version info
-mod_version = 0.6.4
+mod_version = 0.6.8
 artifact_minecraft_version = 1.18.2
 
 minecraft_version = 1.18.2
@@ -12,7 +12,7 @@ fabric_version = 0.56.1+1.18.2
 # build dependency versions
 loom_version = 0.12-SNAPSHOT
 cursegradle_version = 1.4.0
-parchment_version = 2022.07.10
+parchment_version = 2022.11.06
 
 # curseforge info
 projectId = 486392

src/main/java/com/jozufozu/flywheel/backend/gl/GlStateTracker.java

@@ -7,13 +7,12 @@ import com.mojang.blaze3d.platform.GlStateManager;
  * Tracks bound buffers/vbos because GlStateManager doesn't do that for us.
  */
 public class GlStateTracker {
-
+	private static final int[] BUFFERS = new int[GlBufferType.values().length];
-	private static final int[] buffers = new int[GlBufferType.values().length];
 	private static int vao;
 	private static int program;
 
 	public static int getBuffer(GlBufferType type) {
-		return buffers[type.ordinal()];
+		return BUFFERS[type.ordinal()];
 	}
 
 	public static int getVertexArray() {
@@ -24,36 +23,36 @@ public class GlStateTracker {
 		return program;
 	}
 
-	public static void _setBuffer(GlBufferType type, int buffer) {
+	public static void _setBuffer(GlBufferType type, int id) {
-		buffers[type.ordinal()] = buffer;
+		BUFFERS[type.ordinal()] = id;
-	}
-
-	public static void _setProgram(int id) {
-		program = id;
 	}
 
 	public static void _setVertexArray(int id) {
 		vao = id;
 	}
 
-	public static State getRestoreState() {
+	public static void _setProgram(int id) {
-		return new State(buffers.clone(), vao, program);
+		program = id;
 	}
 
-	public static record State(int[] buffers, int vao, int program) {
+	public static State getRestoreState() {
+		return new State(BUFFERS.clone(), vao, program);
+	}
+
+	public record State(int[] buffers, int vao, int program) {
 		public void restore() {
+			if (vao != GlStateTracker.vao) {
+				GlStateManager._glBindVertexArray(vao);
+			}
+
 			GlBufferType[] values = GlBufferType.values();
 
 			for (int i = 0; i < values.length; i++) {
-				if (buffers[i] != GlStateTracker.buffers[i]) {
+				if (buffers[i] != GlStateTracker.BUFFERS[i] && values[i] != GlBufferType.ELEMENT_ARRAY_BUFFER) {
 					GlStateManager._glBindBuffer(values[i].glEnum, buffers[i]);
 				}
 			}
 
-			if (vao != GlStateTracker.vao) {
-				GlStateManager._glBindVertexArray(vao);
-			}
-
 			if (program != GlStateTracker.program) {
 				GlStateManager._glUseProgram(program);
 			}

src/main/java/com/jozufozu/flywheel/backend/gl/buffer/MappedBuffer.java

@@ -39,7 +39,7 @@ public class MappedBuffer extends VecBuffer implements AutoCloseable {
 	}
 
 	@Override
-	public void close() throws Exception {
+	public void close() {
 		flush();
 	}
 }

src/main/java/com/jozufozu/flywheel/backend/instancing/DrawBuffer.java

@@ -2,6 +2,8 @@ package com.jozufozu.flywheel.backend.instancing;
 
 import java.nio.ByteBuffer;
 
+import org.jetbrains.annotations.ApiStatus;
+
 import com.jozufozu.flywheel.backend.model.BufferBuilderExtension;
 import com.jozufozu.flywheel.backend.model.DirectVertexConsumer;
 import com.mojang.blaze3d.platform.MemoryTracker;
@@ -20,6 +22,7 @@ public class DrawBuffer {
 	private ByteBuffer backingBuffer;
 	private int expectedVertices;
 
+	@ApiStatus.Internal
 	public DrawBuffer(RenderType parent) {
 		this.parent = parent;
 	}
@@ -39,7 +42,10 @@ public class DrawBuffer {
 
 		VertexFormat format = parent.format();
 
-		int byteSize = format.getVertexSize() * vertexCount;
+		// Add one extra vertex to uphold the vanilla assumption that BufferBuilders have at least
+		// enough buffer space for one more vertex. Rubidium checks for this extra space when popNextBuffer
+		// is called and reallocates the buffer if there is not space for one more vertex.
+		int byteSize = format.getVertexSize() * (vertexCount + 1);
 
 		if (backingBuffer == null) {
 			backingBuffer = MemoryTracker.create(byteSize);

src/main/java/com/jozufozu/flywheel/backend/instancing/InstanceManager.java

@@ -1,6 +1,7 @@
 package com.jozufozu.flywheel.backend.instancing;
 
 import java.util.ArrayList;
+import java.util.Collection;
 import java.util.HashMap;
 import java.util.HashSet;
 import java.util.List;
@@ -359,4 +360,14 @@ public abstract class InstanceManager<T> implements InstancingEngine.OriginShift
 			LightUpdater.get(value.world).removeListener(value);
 		}
 	}
+
+	public void queueAddAll(Collection<? extends T> objects) {
+		if (!Backend.isOn() || objects.isEmpty()) {
+			return;
+		}
+
+		synchronized (queuedAdditions) {
+			queuedAdditions.addAll(objects);
+		}
+	}
 }

src/main/java/com/jozufozu/flywheel/backend/instancing/entity/EntityInstanceManager.java

@@ -6,9 +6,7 @@ import com.jozufozu.flywheel.backend.instancing.AbstractInstance;
 import com.jozufozu.flywheel.backend.instancing.InstanceManager;
 import com.jozufozu.flywheel.backend.instancing.InstancedRenderRegistry;
 
-import net.minecraft.core.BlockPos;
 import net.minecraft.world.entity.Entity;
-import net.minecraft.world.level.BlockGetter;
 import net.minecraft.world.level.Level;
 
 public class EntityInstanceManager extends InstanceManager<Entity> {
@@ -29,18 +27,13 @@ public class EntityInstanceManager extends InstanceManager<Entity> {
 
 	@Override
 	protected boolean canCreateInstance(Entity entity) {
-		if (!entity.isAlive()) return false;
+		if (!entity.isAlive()) {
+			return false;
+		}
 
 		Level world = entity.level;
 
-		if (Backend.isFlywheelWorld(world)) {
+		return Backend.isFlywheelWorld(world);
-			BlockPos pos = entity.blockPosition();
 
-			BlockGetter existingChunk = world.getChunkForCollisions(pos.getX() >> 4, pos.getZ() >> 4);
-
-			return existingChunk != null;
-		}
-
-		return false;
 	}
 }

src/main/java/com/jozufozu/flywheel/backend/instancing/instancing/GPUInstancer.java

@@ -45,6 +45,7 @@ public class GPUInstancer<D extends InstanceData> extends AbstractInstancer<D> {
 	public void render() {
 		if (invalid()) return;
 
+		// XXX VAO is bound and not reset or restored
 		vao.bind();
 
 		renderSetup();
@@ -69,11 +70,13 @@ public class GPUInstancer<D extends InstanceData> extends AbstractInstancer<D> {
 		vao = new GlVertexArray();
 
 		model = modelAllocator.alloc(modelData, arenaModel -> {
+			// XXX VAO is bound and not reset or restored
 			vao.bind();
 
 			arenaModel.setupState(vao);
 		});
 
+		// XXX VAO is bound and not reset or restored
 		vao.bind();
 		vao.enableArrays(model.getAttributeCount() + instanceFormat.getAttributeCount());
 
@@ -108,6 +111,7 @@ public class GPUInstancer<D extends InstanceData> extends AbstractInstancer<D> {
 			removeDeletedInstances();
 		}
 
+		// XXX ARRAY_BUFFER is bound and reset
 		instanceVBO.bind();
 		if (!realloc()) {
 

src/main/java/com/jozufozu/flywheel/backend/instancing/instancing/InstancedMaterialGroup.java

@@ -68,15 +68,23 @@ public class InstancedMaterialGroup<P extends WorldProgram> implements MaterialG
 		return vertexCount;
 	}
 
+	// XXX Overriden in CrumblingGroup
+	// XXX Runs inside of restore state
 	public void render(Matrix4f viewProjection, double camX, double camY, double camZ, RenderLayer layer) {
 		type.setupRenderState();
-		Textures.bindActiveTextures();
+		Textures.bindActiveTextures(); // XXX Changes active unit and bound textures
-		renderAll(viewProjection, camX, camY, camZ, layer);
+		renderAll(viewProjection, camX, camY, camZ, layer); // XXX May change ARRAY_BUFFER binding (reset or not reset), VAO binding (not reset), shader binding (not reset), call Model.createEBO
 		type.clearRenderState();
+		// XXX Should texture bindings be reset or restored?
+		// XXX Should the active unit be reset or restored?
+		// XXX Should the VAO binding be reset or restored?
+		// XXX Should the ARRAY_BUFFER binding be reset or restored?
+		// XXX Should the shader binding be reset or restored?
 	}
 
+	// XXX Internal GL state changes are inconsistent; sometimes bindings are reset to 0, sometimes not
 	protected void renderAll(Matrix4f viewProjection, double camX, double camY, double camZ, RenderLayer layer) {
-		initializeInstancers();
+		initializeInstancers(); // XXX May change ARRAY_BUFFER binding (reset or not reset), VAO binding (not reset), call Model.createEBO
 
 		vertexCount = 0;
 		instanceCount = 0;
@@ -88,6 +96,7 @@ public class InstancedMaterialGroup<P extends WorldProgram> implements MaterialG
 			P program = owner.context.getProgram(ProgramContext.create(entry.getKey()
 					.getProgramSpec(), Formats.POS_TEX_NORMAL, layer));
 
+			// XXX Shader is bound and not reset or restored
 			program.bind();
 			program.uploadViewProjection(viewProjection);
 			program.uploadCameraPos(camX, camY, camZ);
@@ -95,7 +104,7 @@ public class InstancedMaterialGroup<P extends WorldProgram> implements MaterialG
 			setup(program);
 
 			for (GPUInstancer<?> instancer : material.getAllInstancers()) {
-				instancer.render();
+				instancer.render(); // XXX May change VAO binding (not reset), ARRAY_BUFFER binding (reset)
 				vertexCount += instancer.getVertexCount();
 				instanceCount += instancer.getInstanceCount();
 			}
@@ -103,19 +112,19 @@ public class InstancedMaterialGroup<P extends WorldProgram> implements MaterialG
 	}
 
 	private void initializeInstancers() {
-		ModelAllocator allocator = getModelAllocator();
+		ModelAllocator allocator = getModelAllocator(); // XXX May change ARRAY_BUFFER binding (not reset)
 
 		// initialize all uninitialized instancers...
 		for (InstancedMaterial<?> material : materials.values()) {
 			for (GPUInstancer<?> instancer : material.uninitialized) {
-				instancer.init(allocator);
+				instancer.init(allocator); // XXX May change VAO binding (not reset), ARRAY_BUFFER binding (not reset), call Model.createEBO
 			}
 			material.uninitialized.clear();
 		}
 
 		if (allocator instanceof ModelPool pool) {
 			// ...and then flush the model arena in case anything was marked for upload
-			pool.flush();
+			pool.flush(); // XXX May change ARRAY_BUFFER binding (reset)
 		}
 	}
 

src/main/java/com/jozufozu/flywheel/backend/instancing/instancing/InstancingEngine.java

@@ -10,6 +10,7 @@ import javax.annotation.Nullable;
 
 import com.jozufozu.flywheel.api.MaterialGroup;
 import com.jozufozu.flywheel.backend.RenderLayer;
+import com.jozufozu.flywheel.backend.gl.GlStateTracker;
 import com.jozufozu.flywheel.backend.instancing.Engine;
 import com.jozufozu.flywheel.backend.instancing.TaskEngine;
 import com.jozufozu.flywheel.core.compile.ProgramCompiler;
@@ -74,6 +75,9 @@ public class InstancingEngine<P extends WorldProgram> implements Engine {
 	 */
 	@Override
 	public void render(TaskEngine taskEngine, RenderLayerEvent event) {
+		// XXX Restore state
+		GlStateTracker.State restoreState = GlStateTracker.getRestoreState();
+
 		double camX;
 		double camY;
 		double camZ;
@@ -93,6 +97,8 @@ public class InstancingEngine<P extends WorldProgram> implements Engine {
 		}
 
 		getGroupsToRender(event.getLayer()).forEach(group -> group.render(viewProjection, camX, camY, camZ, event.getLayer()));
+
+		restoreState.restore();
 	}
 
 	private Stream<InstancedMaterialGroup<P>> getGroupsToRender(@Nullable RenderLayer layer) {

src/main/java/com/jozufozu/flywheel/backend/model/ElementBuffer.java

@@ -1,25 +1,29 @@
 package com.jozufozu.flywheel.backend.model;
 
-import com.jozufozu.flywheel.backend.gl.GlNumericType;
+import com.jozufozu.flywheel.backend.gl.buffer.GlBufferType;
-import com.jozufozu.flywheel.backend.gl.buffer.GlBuffer;
+import com.mojang.blaze3d.vertex.VertexFormat;
 
 public class ElementBuffer {
 
-	private final GlBuffer buffer;
+	protected final int elementCount;
-	public final int elementCount;
+	protected final VertexFormat.IndexType eboIndexType;
-	public final GlNumericType eboIndexType;
+	private final int glBuffer;
 
-	public ElementBuffer(GlBuffer backing, int elementCount, GlNumericType indexType) {
+	public ElementBuffer(int backing, int elementCount, VertexFormat.IndexType indexType) {
-		this.buffer = backing;
-		this.eboIndexType = indexType;
 		this.elementCount = elementCount;
+		this.eboIndexType = indexType;
+		this.glBuffer = backing;
 	}
 
 	public void bind() {
-		buffer.bind();
+		GlBufferType.ELEMENT_ARRAY_BUFFER.bind(glBuffer);
 	}
 
-	public void unbind() {
+	public int getElementCount() {
-		buffer.unbind();
+		return elementCount;
+	}
+
+	public VertexFormat.IndexType getEboIndexType() {
+		return eboIndexType;
 	}
 }

src/main/java/com/jozufozu/flywheel/backend/model/FallbackAllocator.java

@@ -1,5 +1,6 @@
 package com.jozufozu.flywheel.backend.model;
 
+import com.jozufozu.flywheel.core.Formats;
 import com.jozufozu.flywheel.core.model.Model;
 
 public enum FallbackAllocator implements ModelAllocator {
@@ -7,7 +8,7 @@ public enum FallbackAllocator implements ModelAllocator {
 
 	@Override
 	public BufferedModel alloc(Model model, Callback allocationCallback) {
-		IndexedModel out = new IndexedModel(model);
+		IndexedModel out = new IndexedModel(model, Formats.POS_TEX_NORMAL);
 		allocationCallback.onAlloc(out);
 		return out;
 	}

src/main/java/com/jozufozu/flywheel/backend/model/IndexedModel.java

@@ -20,6 +20,7 @@ import com.jozufozu.flywheel.core.model.Model;
  */
 public class IndexedModel implements BufferedModel {
 
+	protected final VertexType type;
 	protected final Model model;
 	protected final GlPrimitive primitiveMode;
 	protected ElementBuffer ebo;
@@ -27,6 +28,11 @@ public class IndexedModel implements BufferedModel {
 	protected boolean deleted;
 
 	public IndexedModel(Model model) {
+		this(model, model.getType());
+	}
+
+	public IndexedModel(Model model, VertexType type) {
+		this.type = type;
 		this.model = model;
 		this.primitiveMode = GlPrimitive.TRIANGLES;
 
@@ -38,7 +44,8 @@ public class IndexedModel implements BufferedModel {
 
 		// mirror it in system memory, so we can write to it, and upload our model.
 		try (MappedBuffer buffer = vbo.getBuffer()) {
-			model.writeInto(buffer.unwrap());
+			type.createWriter(buffer.unwrap())
+					.writeVertexList(model.getReader());
 		} catch (Exception e) {
 			Flywheel.LOGGER.error(String.format("Error uploading model '%s':", model.name()), e);
 		}
@@ -52,27 +59,26 @@ public class IndexedModel implements BufferedModel {
 	 * The VBO/VAO should be bound externally.
 	 */
 	public void setupState(GlVertexArray vao) {
+		// XXX ARRAY_BUFFER is bound and not reset or restored
 		vbo.bind();
 		vao.enableArrays(getAttributeCount());
 		vao.bindAttributes(0, getType().getLayout());
+		ebo.bind();
 	}
 
 	@Override
 	public void drawCall() {
-		ebo.bind();
+		GL20.glDrawElements(primitiveMode.glEnum, ebo.getElementCount(), ebo.getEboIndexType().asGLType, 0);
-		GL20.glDrawElements(primitiveMode.glEnum, ebo.elementCount, ebo.eboIndexType.getGlEnum(), 0);
 	}
 
 	/**
-		 * Draws many instances of this model, assuming the appropriate state is already bound.
+	 * Draws many instances of this model, assuming the appropriate state is already bound.
-		 */
+	 */
 	@Override
 	public void drawInstances(int instanceCount) {
 		if (!valid()) return;
 
-		ebo.bind();
+		GL31.glDrawElementsInstanced(primitiveMode.glEnum, ebo.getElementCount(), ebo.getEboIndexType().asGLType, 0, instanceCount);
-
-		GL31.glDrawElementsInstanced(primitiveMode.glEnum, ebo.elementCount, ebo.eboIndexType.getGlEnum(), 0, instanceCount);
 	}
 
 	public boolean isDeleted() {
@@ -81,7 +87,7 @@ public class IndexedModel implements BufferedModel {
 
 	@Override
 	public VertexType getType() {
-		return model.getType();
+		return type;
 	}
 
 	public int getVertexCount() {

src/main/java/com/jozufozu/flywheel/backend/model/ModelPool.java

@@ -42,6 +42,7 @@ public class ModelPool implements ModelAllocator {
 
 		vbo = new MappedGlBuffer(GlBufferType.ARRAY_BUFFER);
 
+		// XXX ARRAY_BUFFER is bound and not reset or restored
 		vbo.bind();
 		vbo.setGrowthMargin(stride * 64);
 	}
@@ -68,6 +69,7 @@ public class ModelPool implements ModelAllocator {
 		if (dirty) {
 			if (anyToRemove) processDeletions();
 
+			// XXX ARRAY_BUFFER is bound and reset
 			vbo.bind();
 			if (realloc()) {
 				uploadAll();
@@ -182,25 +184,25 @@ public class ModelPool implements ModelAllocator {
 
 		@Override
 		public void setupState(GlVertexArray vao) {
+			// XXX ARRAY_BUFFER is bound and not reset or restored
 			vbo.bind();
 			vao.enableArrays(getAttributeCount());
 			vao.bindAttributes(0, vertexType.getLayout());
+			ebo.bind();
 		}
 
 		@Override
 		public void drawCall() {
-			GL32.glDrawElementsBaseVertex(GlPrimitive.TRIANGLES.glEnum, ebo.elementCount, ebo.eboIndexType.getGlEnum(), 0, first);
+			GL32.glDrawElementsBaseVertex(GlPrimitive.TRIANGLES.glEnum, ebo.getElementCount(), ebo.getEboIndexType().asGLType, 0, first);
 		}
 
 		@Override
 		public void drawInstances(int instanceCount) {
 			if (!valid()) return;
 
-			ebo.bind();
-
 			//Backend.log.info(StringUtil.args("drawElementsInstancedBaseVertex", GlPrimitive.TRIANGLES, ebo.elementCount, ebo.eboIndexType, 0, instanceCount, first));
 
-			GL32.glDrawElementsInstancedBaseVertex(GlPrimitive.TRIANGLES.glEnum, ebo.elementCount, ebo.eboIndexType.getGlEnum(), 0, instanceCount, first);
+			GL32.glDrawElementsInstancedBaseVertex(GlPrimitive.TRIANGLES.glEnum, ebo.getElementCount(), ebo.getEboIndexType().asGLType, 0, instanceCount, first);
 		}
 
 		@Override

src/main/java/com/jozufozu/flywheel/backend/model/VBOModel.java

@@ -58,6 +58,7 @@ public class VBOModel implements BufferedModel {
 	 * The VBO/VAO should be bound externally.
 	 */
 	public void setupState(GlVertexArray vao) {
+		// XXX ARRAY_BUFFER is bound and not reset or restored
 		vbo.bind();
 		vao.enableArrays(getAttributeCount());
 		vao.bindAttributes(0, getLayout());

src/main/java/com/jozufozu/flywheel/config/FlwConfig.java

@@ -35,7 +35,7 @@ public class FlwConfig {
 	protected final Map<String, Option<?>> optionMapView = Collections.unmodifiableMap(optionMap);
 
 	/** Select the backend to use. */
-	public final EnumOption<BackendType> backend = addOption(new EnumOption<>("engine", BackendType.INSTANCING));
+	public final EnumOption<BackendType> backend = addOption(new EnumOption<>("backend", BackendType.INSTANCING));
 	/** Enable or disable a debug overlay that colors pixels by their normal. */
 	public final BooleanOption debugNormals = addOption(new BooleanOption("debugNormals", false));
 	/** Enable or disable instance update limiting with distance. */

src/main/java/com/jozufozu/flywheel/core/PartialModel.java

@@ -20,12 +20,12 @@ import net.minecraft.server.packs.resources.ResourceManagerReloadListener;
  * A helper class for loading and accessing json models.
  * <br>
  * Creating a PartialModel will make the associated modelLocation automatically load.
- * PartialModels must be initialized during {@link net.minecraftforge.fml.event.lifecycle.FMLClientSetupEvent FMLClientSetupEvent}.
+ * PartialModels must be initialized the mod class constructor.
  * <br>
  * Once {@link ModelBakeEvent} finishes, all PartialModels (with valid modelLocations)
  * will have their bakedModel fields populated.
  * <br>
- * Attempting to create a PartialModel after ModelRegistryEvent will cause an error.
+ * Attempting to create a PartialModel after {@link ModelRegistryEvent} will cause an error.
  */
 public class PartialModel {
 

src/main/java/com/jozufozu/flywheel/core/QuadConverter.java

@@ -1,37 +1,32 @@
 package com.jozufozu.flywheel.core;
 
-import java.nio.Buffer;
+import org.jetbrains.annotations.NotNull;
-import java.nio.ByteBuffer;
+import org.jetbrains.annotations.Nullable;
-import java.nio.ByteOrder;
+import org.lwjgl.opengl.GL32;
-import java.util.EnumMap;
+import org.lwjgl.opengl.GL32C;
-import java.util.Map;
-
-import javax.annotation.Nonnull;
-import javax.annotation.Nullable;
-
-import org.lwjgl.system.MemoryStack;
 import org.lwjgl.system.MemoryUtil;
 
 import com.jozufozu.flywheel.backend.gl.GlNumericType;
-import com.jozufozu.flywheel.backend.gl.buffer.GlBuffer;
 import com.jozufozu.flywheel.backend.gl.buffer.GlBufferType;
-import com.jozufozu.flywheel.backend.gl.buffer.MappedGlBuffer;
+import com.jozufozu.flywheel.backend.gl.buffer.GlBufferUsage;
 import com.jozufozu.flywheel.backend.model.ElementBuffer;
 import com.jozufozu.flywheel.event.ReloadRenderersEvent;
+import com.mojang.blaze3d.vertex.VertexFormat;
+
+import it.unimi.dsi.fastutil.ints.Int2ReferenceArrayMap;
+import it.unimi.dsi.fastutil.ints.Int2ReferenceMap;
 
 /**
  * A class to manage EBOs that index quads as triangles.
  */
 public class QuadConverter {
 
-	public static final int STARTING_CAPACITY = 42; // 255 / 6 = 42
-
 	private static QuadConverter INSTANCE;
 
-	@Nonnull
+	@NotNull
 	public static QuadConverter getInstance() {
 		if (INSTANCE == null) {
-			INSTANCE = new QuadConverter(STARTING_CAPACITY);
+			INSTANCE = new QuadConverter();
 		}
 
 		return INSTANCE;
@@ -42,129 +37,79 @@ public class QuadConverter {
 		return INSTANCE;
 	}
 
-	Map<GlNumericType, GlBuffer> ebos;
+	private final Int2ReferenceMap<ElementBuffer> cache = new Int2ReferenceArrayMap<>();
-	int[] capacities;
+	private final int ebo;
+	private int quadCapacity;
 
-	public QuadConverter(int initialCapacity) {
+	public QuadConverter() {
-		this.ebos = new EnumMap<>(GlNumericType.class);
+		this.ebo = GL32.glGenBuffers();
-		initCapacities();
+		this.quadCapacity = 0;
-
-		fillBuffer(initialCapacity);
 	}
 
 	public ElementBuffer quads2Tris(int quads) {
-		int indexCount = quads * 6;
+		if (quads > quadCapacity) {
-		GlNumericType type = getSmallestIndexType(indexCount);
+			grow(quads * 2);
-
-		if (quads > getCapacity(type)) {
-			fillBuffer(quads, indexCount, type);
 		}
 
-		return new ElementBuffer(getBuffer(type), indexCount, type);
+		return cache.computeIfAbsent(quads, this::createElementBuffer);
 	}
 
-	private void initCapacities() {
+	@NotNull
-		this.capacities = new int[GlNumericType.values().length];
+	private ElementBuffer createElementBuffer(int quads) {
+		return new ElementBuffer(ebo, quads * 6, VertexFormat.IndexType.INT);
 	}
 
-	private int getCapacity(GlNumericType type) {
+	private void grow(int quads) {
-		return capacities[type.ordinal()];
+		int byteSize = quads * 6 * GlNumericType.UINT.getByteWidth();
-	}
+		final long ptr = MemoryUtil.nmemAlloc(byteSize);
 
-	private void updateCapacity(GlNumericType type, int capacity) {
+		fillBuffer(ptr, quads);
-		if (getCapacity(type) < capacity) {
+
-			capacities[type.ordinal()] = capacity;
+		// XXX ARRAY_BUFFER is bound and reset
-		}
+		final var bufferType = GlBufferType.ARRAY_BUFFER;
+		final int oldBuffer = bufferType.getBoundBuffer();
+		bufferType.bind(ebo);
+		GL32C.nglBufferData(bufferType.glEnum, byteSize, ptr, GlBufferUsage.STATIC_DRAW.glEnum);
+		bufferType.bind(oldBuffer);
+
+		MemoryUtil.nmemFree(ptr);
+
+		this.quadCapacity = quads;
 	}
 
 	public void delete() {
-		ebos.values()
+		GL32.glDeleteBuffers(ebo);
-				.forEach(GlBuffer::delete);
+		this.cache.clear();
-		ebos.clear();
+		this.quadCapacity = 0;
-		initCapacities();
 	}
 
-	private void fillBuffer(int quads) {
+	private void fillBuffer(long ptr, int quads) {
-		int indexCount = quads * 6;
+		int numVertices = 4 * quads;
+		int baseVertex = 0;
+		while (baseVertex < numVertices) {
+			writeQuadIndicesUnsafe(ptr, baseVertex);
 
-		fillBuffer(quads, indexCount, getSmallestIndexType(indexCount));
+			baseVertex += 4;
-	}
+			ptr += 6 * 4;
-
-	private void fillBuffer(int quads, int indexCount, GlNumericType type) {
-		MemoryStack stack = MemoryStack.stackPush();
-		int bytes = indexCount * type.getByteWidth();
-
-		ByteBuffer indices;
-		if (bytes > stack.getSize()) {
-			indices = MemoryUtil.memAlloc(bytes); // not enough space on the preallocated stack
-		} else {
-			stack.push();
-			indices = stack.malloc(bytes);
 		}
-
-		indices.order(ByteOrder.nativeOrder());
-
-		fillBuffer(indices, type, quads);
-
-		GlBuffer buffer = getBuffer(type);
-
-		buffer.bind();
-		buffer.upload(indices);
-		buffer.unbind();
-
-		if (bytes > stack.getSize()) {
-			MemoryUtil.memFree(indices);
-		} else {
-			stack.pop();
-		}
-
-		updateCapacity(type, quads);
 	}
 
-	private void fillBuffer(ByteBuffer indices, GlNumericType type, int quads) {
+	private void writeQuadIndicesUnsafe(long ptr, int baseVertex) {
-		for (int i = 0, max = 4 * quads; i < max; i += 4) {
+		// triangle a
-			// triangle a
+		MemoryUtil.memPutInt(ptr, baseVertex);
-			type.castAndBuffer(indices, i);
+		MemoryUtil.memPutInt(ptr + 4, baseVertex + 1);
-			type.castAndBuffer(indices, i + 1);
+		MemoryUtil.memPutInt(ptr + 8, baseVertex + 2);
-			type.castAndBuffer(indices, i + 2);
+		// triangle b
-			// triangle b
+		MemoryUtil.memPutInt(ptr + 12, baseVertex);
-			type.castAndBuffer(indices, i);
+		MemoryUtil.memPutInt(ptr + 16, baseVertex + 2);
-			type.castAndBuffer(indices, i + 2);
+		MemoryUtil.memPutInt(ptr + 20, baseVertex + 3);
-			type.castAndBuffer(indices, i + 3);
-		}
-		((Buffer) indices).flip();
 	}
 
-	private GlBuffer getBuffer(GlNumericType type) {
+	// make sure this gets reset first, so it has a chance to repopulate
-		return ebos.computeIfAbsent(type, $ -> new MappedGlBuffer(GlBufferType.ELEMENT_ARRAY_BUFFER));
-	}
-
-	/**
-	 * Given the needed number of indices, what is the smallest bit width type that can index everything? <br>
-	 *
-	 * <pre>
-	 * | indexCount   | type  |
-	 * |--------------|-------|
-	 * | [0, 255)     | byte  |
-	 * | [256, 65536)	| short	|
-	 * | [65537, )	| int	|
-	 * </pre>
-	 */
-	private static GlNumericType getSmallestIndexType(int indexCount) {
-//		indexCount = indexCount >>> 8;
-//		if (indexCount == 0) {
-//			return GlNumericType.UBYTE;
-//		}
-//		indexCount = indexCount >>> 8;
-//		if (indexCount == 0) {
-//			return GlNumericType.USHORT;
-//		}
-
-		return GlNumericType.UINT;
-	}
-
-	// make sure this gets reset first so it has a chance to repopulate
 	public static void onRendererReload(ReloadRenderersEvent event) {
-		if (INSTANCE != null) INSTANCE.delete();
+		if (INSTANCE != null) {
+			INSTANCE.delete();
+			INSTANCE = null;
+		}
 	}
 }

src/main/java/com/jozufozu/flywheel/core/crumbling/CrumblingGroup.java

@@ -18,6 +18,7 @@ public class CrumblingGroup<P extends CrumblingProgram> extends InstancedMateria
 		super(owner, type);
 	}
 
+	// XXX See notes of overriden method
 	@Override
 	public void render(Matrix4f viewProjection, double camX, double camY, double camZ, RenderLayer layer) {
 		type.setupRenderState();

src/main/java/com/jozufozu/flywheel/core/crumbling/CrumblingRenderer.java

@@ -5,6 +5,7 @@ import java.util.List;
 import java.util.SortedSet;
 
 import com.jozufozu.flywheel.backend.Backend;
+import com.jozufozu.flywheel.backend.gl.GlStateTracker;
 import com.jozufozu.flywheel.backend.gl.GlTextureUnit;
 import com.jozufozu.flywheel.backend.instancing.InstanceManager;
 import com.jozufozu.flywheel.backend.instancing.SerialTaskEngine;
@@ -16,6 +17,7 @@ import com.jozufozu.flywheel.mixin.LevelRendererAccessor;
 import com.jozufozu.flywheel.util.Lazy;
 import com.jozufozu.flywheel.util.Pair;
 import com.mojang.blaze3d.systems.RenderSystem;
+import com.mojang.blaze3d.vertex.PoseStack;
 
 import it.unimi.dsi.fastutil.ints.Int2ObjectArrayMap;
 import it.unimi.dsi.fastutil.ints.Int2ObjectMap;
@@ -30,6 +32,7 @@ import net.minecraft.client.resources.model.ModelBakery;
 import net.minecraft.core.BlockPos;
 import net.minecraft.server.level.BlockDestructionProgress;
 import net.minecraft.world.level.block.entity.BlockEntity;
+import net.minecraft.world.phys.Vec3;
 
 /**
  * Responsible for rendering the block breaking overlay for instanced block entities.
@@ -48,13 +51,21 @@ public class CrumblingRenderer {
 		INVALIDATOR = state.second();
 	}
 
-	public static void renderBreaking(RenderLayerEvent event) {
+	public static void render(ClientLevel level, Camera camera, PoseStack stack) {
-		if (!Backend.canUseInstancing(event.getWorld())) return;
+		if (!Backend.canUseInstancing(level)) return;
-
-		Int2ObjectMap<List<BlockEntity>> activeStages = getActiveStageBlockEntities(event.getWorld());
 
+		Int2ObjectMap<List<BlockEntity>> activeStages = getActiveStageBlockEntities(level);
 		if (activeStages.isEmpty()) return;
 
+		Vec3 cameraPos = camera.getPosition();
+
+		// XXX Restore state
+		GlStateTracker.State restoreState = GlStateTracker.getRestoreState();
+		CrumblingRenderer.renderBreaking(activeStages, new RenderLayerEvent(level, null, stack, null, cameraPos.x, cameraPos.y, cameraPos.z));
+		restoreState.restore();
+	}
+
+	private static void renderBreaking(Int2ObjectMap<List<BlockEntity>> activeStages, RenderLayerEvent event) {
 		State state = STATE.get();
 		InstanceManager<BlockEntity> instanceManager = state.instanceManager;
 		InstancingEngine<CrumblingProgram> materials = state.materialManager;
@@ -71,6 +82,7 @@ public class CrumblingRenderer {
 
 				instanceManager.beginFrame(SerialTaskEngine.INSTANCE, info);
 
+				// XXX Each call applies another restore state even though we are already inside of a restore state
 				materials.render(SerialTaskEngine.INSTANCE, event);
 
 				instanceManager.invalidate();
@@ -78,6 +90,9 @@ public class CrumblingRenderer {
 
 		}
 
+		// XXX Inconsistent GL state cleanup
+		// If texture binding and active unit need to be restored, store them in variables before GL state is changed
+		// instead of guessing that unit 0 and crumbling tex 0 are correct
 		GlTextureUnit.T0.makeActive();
 		AbstractTexture breaking = textureManager.getTexture(ModelBakery.BREAKING_LOCATIONS.get(0));
 		if (breaking != null) RenderSystem.bindTexture(breaking.getId());

src/main/java/com/jozufozu/flywheel/core/hardcoded/ModelPart.java

@@ -3,6 +3,7 @@ package com.jozufozu.flywheel.core.hardcoded;
 import java.util.List;
 
 import com.jozufozu.flywheel.api.vertex.VertexList;
+import com.jozufozu.flywheel.api.vertex.VertexType;
 import com.jozufozu.flywheel.core.Formats;
 import com.jozufozu.flywheel.core.model.Model;
 import com.jozufozu.flywheel.core.vertex.PosTexNormalWriterUnsafe;
@@ -51,4 +52,20 @@ public class ModelPart implements Model {
 	public VertexList getReader() {
 		return reader;
 	}
+
+	@Override
+	public VertexType getType() {
+		return Formats.POS_TEX_NORMAL;
+	}
+
+	@Override
+	public void delete() {
+		if (reader instanceof AutoCloseable closeable) {
+			try {
+				closeable.close();
+			} catch (Exception e) {
+				//
+			}
+		}
+	}
 }

src/main/java/com/jozufozu/flywheel/core/model/BlockModel.java

@@ -1,6 +1,7 @@
 package com.jozufozu.flywheel.core.model;
 
 import com.jozufozu.flywheel.api.vertex.VertexList;
+import com.jozufozu.flywheel.api.vertex.VertexType;
 import com.jozufozu.flywheel.core.Formats;
 import com.mojang.blaze3d.vertex.PoseStack;
 
@@ -12,10 +13,8 @@ import net.minecraft.world.level.block.state.BlockState;
  * A model of a single block.
  */
 public class BlockModel implements Model {
-	private static final PoseStack IDENTITY = new PoseStack();
 
 	private final VertexList reader;
-
 	private final String name;
 
 	public BlockModel(BlockState state) {
@@ -25,12 +24,21 @@ public class BlockModel implements Model {
 	}
 
 	public BlockModel(BakedModel model, BlockState referenceState) {
-		this(model, referenceState, IDENTITY);
+		this(new BakedModelBuilder(model).withReferenceState(referenceState), referenceState.toString());
 	}
 
 	public BlockModel(BakedModel model, BlockState referenceState, PoseStack ms) {
-		reader = Formats.BLOCK.createReader(ModelUtil.getBufferBuilder(model, referenceState, ms));
+		this(new BakedModelBuilder(model).withReferenceState(referenceState)
-		name = referenceState.toString();
+				.withPoseStack(ms), referenceState.toString());
+	}
+
+	public BlockModel(Bufferable bufferable, String name) {
+		this(bufferable.build(), name);
+	}
+
+	public BlockModel(ShadeSeparatedBufferBuilder bufferBuilder, String name) {
+		this.name = name;
+		reader = Formats.BLOCK.createReader(bufferBuilder);
 	}
 
 	@Override
@@ -47,4 +55,20 @@ public class BlockModel implements Model {
 	public VertexList getReader() {
 		return reader;
 	}
+
+	@Override
+	public VertexType getType() {
+		return Formats.BLOCK;
+	}
+
+	@Override
+	public void delete() {
+		if (reader instanceof AutoCloseable closeable) {
+			try {
+				closeable.close();
+			} catch (Exception e) {
+				//
+			}
+		}
+	}
 }

src/main/java/com/jozufozu/flywheel/core/model/Model.java

@@ -5,7 +5,6 @@ import java.nio.ByteBuffer;
 import com.jozufozu.flywheel.api.vertex.VertexList;
 import com.jozufozu.flywheel.api.vertex.VertexType;
 import com.jozufozu.flywheel.backend.model.ElementBuffer;
-import com.jozufozu.flywheel.core.Formats;
 import com.jozufozu.flywheel.core.QuadConverter;
 
 /**
@@ -42,10 +41,9 @@ public interface Model {
 	 */
 	int vertexCount();
 
-	default VertexType getType() {
+	VertexType getType();
-		return Formats.POS_TEX_NORMAL;
-	}
 
+	// XXX Since this is public API (technically) we cannot make assumptions about what GL state this method can use or modify unless a contract is established.
 	/**
 	 * Create an element buffer object that indexes the vertices of this model.
 	 *
@@ -61,6 +59,8 @@ public interface Model {
 				.quads2Tris(vertexCount() / 4);
 	}
 
+	void delete();
+
 	/**
 	 * The size in bytes that this model's data takes up.
 	 */

src/main/java/com/jozufozu/flywheel/core/model/WorldModel.java

@@ -1,37 +0,0 @@
-package com.jozufozu.flywheel.core.model;
-
-import com.jozufozu.flywheel.api.vertex.VertexList;
-import com.jozufozu.flywheel.api.vertex.VertexType;
-import com.jozufozu.flywheel.core.Formats;
-import com.mojang.blaze3d.vertex.BufferBuilder;
-
-public class WorldModel implements Model {
-
-	private final VertexList reader;
-	private final String name;
-
-	public WorldModel(BufferBuilder bufferBuilder, String name) {
-		this.reader = Formats.BLOCK.createReader(bufferBuilder);
-		this.name = name;
-	}
-
-	@Override
-	public String name() {
-		return name;
-	}
-
-	@Override
-	public VertexType getType() {
-		return Formats.BLOCK;
-	}
-
-	@Override
-	public int vertexCount() {
-		return reader.getVertexCount();
-	}
-
-	@Override
-	public VertexList getReader() {
-		return reader;
-	}
-}

src/main/java/com/jozufozu/flywheel/core/model/WorldModelBuilder.java

@@ -86,7 +86,7 @@ public final class WorldModelBuilder implements Bufferable {
 		return this;
 	}
 
-	public WorldModel intoMesh(String name) {
+	public BlockModel intoMesh(String name) {
-		return new WorldModel(ModelUtil.getBufferBuilder(this), name);
+		return new BlockModel(ModelUtil.getBufferBuilder(this), name);
 	}
 }

src/main/java/com/jozufozu/flywheel/core/vertex/AbstractVertexList.java

@@ -7,7 +7,6 @@ import org.lwjgl.system.MemoryUtil;
 
 import com.jozufozu.flywheel.api.vertex.VertexList;
 import com.mojang.blaze3d.platform.MemoryTracker;
-import com.mojang.blaze3d.vertex.BufferBuilder;
 
 public abstract class AbstractVertexList implements VertexList, AutoCloseable {
 
@@ -22,15 +21,6 @@ public abstract class AbstractVertexList implements VertexList, AutoCloseable {
 		init(copyFrom);
 	}
 
-	public AbstractVertexList(BufferBuilder builder) {
-		var pair = builder.popNextBuffer();
-		ByteBuffer copyFrom = pair.getSecond();
-		this.contents = MemoryTracker.create(copyFrom.capacity());
-		this.vertexCount = pair.getFirst().vertexCount();
-		this.base = MemoryUtil.memAddress(this.contents);
-		init(copyFrom);
-	}
-
 	private void init(ByteBuffer copyFrom) {
 		this.contents.order(copyFrom.order());
 		this.contents.put(copyFrom);

src/main/java/com/jozufozu/flywheel/core/vertex/BlockVertexList.java

@@ -1,19 +1,17 @@
 package com.jozufozu.flywheel.core.vertex;
 
+import java.nio.ByteBuffer;
+
 import com.jozufozu.flywheel.api.vertex.ShadedVertexList;
-import com.jozufozu.flywheel.core.model.ShadeSeparatedBufferBuilder;
-import com.jozufozu.flywheel.fabric.helper.BufferBuilderHelper;
 import com.jozufozu.flywheel.util.RenderMath;
-import com.mojang.blaze3d.vertex.BufferBuilder;
 
 public class BlockVertexList extends AbstractVertexList {
 
 	private final int stride;
 
-	public BlockVertexList(BufferBuilder builder) {
+	public BlockVertexList(ByteBuffer copyFrom, int vertexCount, int stride) {
-		super(builder);
+		super(copyFrom, vertexCount);
-		this.stride = BufferBuilderHelper.getVertexFormat(builder)
+		this.stride = stride;
-				.getVertexSize();
 	}
 
 	@Override
@@ -94,9 +92,9 @@ public class BlockVertexList extends AbstractVertexList {
 
 		private final int unshadedStartVertex;
 
-		public Shaded(ShadeSeparatedBufferBuilder builder) {
+		public Shaded(ByteBuffer copyFrom, int vertexCount, int stride, int unshadedStartVertex) {
-			super(builder);
+			super(copyFrom, vertexCount, stride);
-			unshadedStartVertex = builder.getUnshadedStartVertex();
+			this.unshadedStartVertex = unshadedStartVertex;
 		}
 
 		@Override

src/main/java/com/jozufozu/flywheel/event/ForgeEvents.java

@@ -13,7 +13,6 @@ import net.minecraft.client.multiplayer.ClientLevel;
 public class ForgeEvents {
 
 	public static void addToDebugScreen(List<String> right) {
-
 		InstancedRenderDispatcher.getDebugString(right);
 	}
 

src/main/java/com/jozufozu/flywheel/mixin/BufferUploaderMixin.java

@@ -1,29 +0,0 @@
-package com.jozufozu.flywheel.mixin;
-
-import javax.annotation.Nullable;
-
-import org.spongepowered.asm.mixin.Mixin;
-import org.spongepowered.asm.mixin.Shadow;
-import org.spongepowered.asm.mixin.injection.At;
-import org.spongepowered.asm.mixin.injection.Inject;
-import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
-
-import com.jozufozu.flywheel.backend.gl.GlStateTracker;
-import com.mojang.blaze3d.vertex.BufferUploader;
-import com.mojang.blaze3d.vertex.VertexFormat;
-
-@Mixin(BufferUploader.class)
-public class BufferUploaderMixin {
-
-	@Shadow
-	@Nullable
-	private static VertexFormat lastFormat;
-
-	@Inject(method = "reset", at = @At("HEAD"))
-	private static void stopBufferUploaderFromClearingBufferStateIfNothingIsBound(CallbackInfo ci) {
-		// Trust our tracker over BufferUploader's.
-		if (GlStateTracker.getVertexArray() == 0) {
-			lastFormat = null;
-		}
-	}
-}

src/main/java/com/jozufozu/flywheel/mixin/ClientMainMixin.java

@@ -0,0 +1,28 @@
+package com.jozufozu.flywheel.mixin;
+
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Inject;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
+
+import net.minecraft.client.main.Main;
+
+@Mixin(value = Main.class, remap = false)
+public class ClientMainMixin {
+
+	@Inject(method = "main", at = @At("HEAD"))
+	private static void injectRenderDoc(CallbackInfo ci) {
+		// Only try to load RenderDoc if a system property is set.
+		if (System.getProperty("flw.loadRenderDoc") == null) {
+			return;
+		}
+
+		try {
+			System.loadLibrary("renderdoc");
+		} catch (Throwable ignored) {
+			// Oh well, we tried.
+			// On Windows, RenderDoc installs to "C:\Program Files\RenderDoc\"
+			System.err.println("Is RenderDoc in your PATH?");
+		}
+	}
+}

src/main/java/com/jozufozu/flywheel/mixin/LevelRendererMixin.java

@@ -3,21 +3,17 @@ package com.jozufozu.flywheel.mixin;
 import org.spongepowered.asm.mixin.Final;
 import org.spongepowered.asm.mixin.Mixin;
 import org.spongepowered.asm.mixin.Shadow;
-import org.spongepowered.asm.mixin.Unique;
 import org.spongepowered.asm.mixin.injection.At;
-import org.spongepowered.asm.mixin.injection.Group;
 import org.spongepowered.asm.mixin.injection.Inject;
 import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
 
 import com.jozufozu.flywheel.backend.Backend;
-import com.jozufozu.flywheel.backend.gl.GlStateTracker;
 import com.jozufozu.flywheel.backend.instancing.InstancedRenderDispatcher;
 import com.jozufozu.flywheel.core.crumbling.CrumblingRenderer;
 import com.jozufozu.flywheel.event.BeginFrameEvent;
 import com.jozufozu.flywheel.event.ReloadRenderersEvent;
 import com.jozufozu.flywheel.event.RenderLayerEvent;
 import com.jozufozu.flywheel.fabric.event.FlywheelEvents;
-import com.mojang.blaze3d.vertex.BufferUploader;
 import com.mojang.blaze3d.vertex.PoseStack;
 import com.mojang.math.Matrix4f;
 
@@ -31,7 +27,6 @@ import net.minecraft.client.renderer.RenderType;
 import net.minecraft.client.renderer.culling.Frustum;
 import net.minecraft.core.BlockPos;
 import net.minecraft.world.level.block.state.BlockState;
-import net.minecraft.world.phys.Vec3;
 
 @Mixin(value = LevelRenderer.class, priority = 1001) // Higher priority to go after sodium
 public class LevelRendererMixin {
@@ -48,41 +43,9 @@ public class LevelRendererMixin {
 		FlywheelEvents.BEGIN_FRAME.invoker().handleEvent(new BeginFrameEvent(level, camera, frustum));
 	}
 
-	@Unique
-	private boolean flywheel$LayerRendered;
-
-	/**
-	 * This only gets injected if renderChunkLayer is not Overwritten
-	 */
-	@Group(name = "flywheel$renderLayer", min = 1, max = 2)
-	@Inject(at = @At(value = "INVOKE", target = "Lnet/minecraft/client/renderer/ShaderInstance;clear()V"), method = "renderChunkLayer")
-	private void renderLayer(RenderType type, PoseStack stack, double camX, double camY, double camZ, Matrix4f p_172999_, CallbackInfo ci) {
-		flywheel$renderLayer(type, stack, camX, camY, camZ);
-		flywheel$LayerRendered = true;
-	}
-
-	/**
-	 * This always gets injected.
-	 */
-	@Group(name = "flywheel$renderLayer")
 	@Inject(at = @At("TAIL"), method = "renderChunkLayer")
-	private void renderLayerSodium(RenderType type, PoseStack stack, double camX, double camY, double camZ, Matrix4f p_172999_, CallbackInfo ci) {
+	private void renderLayer(RenderType type, PoseStack stack, double camX, double camY, double camZ, Matrix4f projection, CallbackInfo ci) {
-		if (!flywheel$LayerRendered) {
-			flywheel$renderLayer(type, stack, camX, camY, camZ);
-		}
-		flywheel$LayerRendered = false;
-		BufferUploader.reset();
-	}
-
-	@Unique
-	private void flywheel$renderLayer(RenderType type, PoseStack stack, double camX, double camY, double camZ) {
-		RenderBuffers renderBuffers = this.renderBuffers;
-
-		GlStateTracker.State restoreState = GlStateTracker.getRestoreState();
-
 		FlywheelEvents.RENDER_LAYER.invoker().handleEvent(new RenderLayerEvent(level, type, stack, renderBuffers, camX, camY, camZ));
-
-		restoreState.restore();
 	}
 
 	@Inject(at = @At("TAIL"), method = "allChanged")
@@ -92,17 +55,10 @@ public class LevelRendererMixin {
 		FlywheelEvents.RELOAD_RENDERERS.invoker().handleEvent(new ReloadRenderersEvent(level));
 	}
 
-
 	@Inject(at = @At(value = "INVOKE", target = "Lnet/minecraft/client/renderer/LevelRenderer;checkPoseStack(Lcom/mojang/blaze3d/vertex/PoseStack;)V", ordinal = 2 // after the game renders the breaking overlay normally
 	), method = "renderLevel")
-	private void renderBlockBreaking(PoseStack stack, float p_228426_2_, long p_228426_3_, boolean p_228426_5_, Camera info, GameRenderer gameRenderer, LightTexture lightTexture, Matrix4f p_228426_9_, CallbackInfo ci) {
+	private void renderBlockBreaking(PoseStack stack, float p_228426_2_, long p_228426_3_, boolean p_228426_5_, Camera camera, GameRenderer gameRenderer, LightTexture lightTexture, Matrix4f p_228426_9_, CallbackInfo ci) {
-		if (!Backend.isOn()) return;
+		CrumblingRenderer.render(level, camera, stack);
-
-		Vec3 cameraPos = info.getPosition();
-
-		GlStateTracker.State restoreState = GlStateTracker.getRestoreState();
-		CrumblingRenderer.renderBreaking(new RenderLayerEvent(level, null, stack, null, cameraPos.x, cameraPos.y, cameraPos.z));
-		restoreState.restore();
 	}
 
 	// Instancing

src/main/java/com/jozufozu/flywheel/mixin/RenderTypeMixin.java

@@ -14,11 +14,14 @@ import net.minecraft.client.renderer.RenderType;
 public class RenderTypeMixin implements RenderTypeExtension {
 
 	@Unique
-	private final DrawBuffer flywheel$drawBuffer = new DrawBuffer((RenderType) (Object) this);
+	private DrawBuffer flywheel$drawBuffer;
 
 	@Override
 	@Nonnull
 	public DrawBuffer flywheel$getDrawBuffer() {
+		if (flywheel$drawBuffer == null) {
+			flywheel$drawBuffer = new DrawBuffer((RenderType) (Object) this);
+		}
 		return flywheel$drawBuffer;
 	}
 }

src/main/java/com/jozufozu/flywheel/mixin/instancemanage/ChunkRebuildHooksMixin.java

@@ -1,4 +1,4 @@
-package com.jozufozu.flywheel.mixin;
+package com.jozufozu.flywheel.mixin.instancemanage;
 
 import java.util.Set;
 

src/main/java/com/jozufozu/flywheel/mixin/instancemanage/InstanceAddMixin.java

@@ -1,4 +1,4 @@
-package com.jozufozu.flywheel.mixin;
+package com.jozufozu.flywheel.mixin.instancemanage;
 
 import org.spongepowered.asm.mixin.Final;
 import org.spongepowered.asm.mixin.Mixin;

src/main/java/com/jozufozu/flywheel/mixin/instancemanage/InstanceRemoveMixin.java

@@ -1,4 +1,4 @@
-package com.jozufozu.flywheel.mixin;
+package com.jozufozu.flywheel.mixin.instancemanage;
 
 import javax.annotation.Nullable;
 

src/main/resources/flywheel.mixins.json

@@ -7,16 +7,13 @@
     "BlockEntityRenderDispatcherAccessor",
     "BlockEntityTypeMixin",
     "BufferBuilderMixin",
-    "BufferUploaderMixin",
     "CameraMixin",
     "ClientLevelMixin",
-    "ChunkRebuildHooksMixin",
+    "ClientMainMixin",
     "EntityTypeMixin",
     "FixFabulousDepthMixin",
     "FrustumMixin",
     "GlStateManagerMixin",
-    "InstanceAddMixin",
-    "InstanceRemoveMixin",
     "LevelRendererAccessor",
     "LevelRendererMixin",
     "PausedPartialTickAccessor",
@@ -24,6 +21,9 @@
     "RenderTypeMixin",
     "atlas.AtlasDataMixin",
     "atlas.SheetDataAccessor",
+    "instancemanage.ChunkRebuildHooksMixin",
+    "instancemanage.InstanceAddMixin",
+    "instancemanage.InstanceRemoveMixin",
     "light.LightUpdateMixin",
     "light.NetworkLightUpdateMixin",
     "matrix.Matrix3fMixin",