Merge remote-tracking branch 'origin/1.20/next' into 1.20/next

# Conflicts:
#	src/main/java/com/jozufozu/flywheel/backend/compile/PipelineCompiler.java
#	src/main/java/com/jozufozu/flywheel/backend/engine/indirect/IndirectBuffers.java
#	src/main/java/com/jozufozu/flywheel/backend/engine/indirect/IndirectCullingGroup.java
#	src/main/java/com/jozufozu/flywheel/backend/engine/indirect/IndirectDrawManager.java
#	src/main/java/com/jozufozu/flywheel/backend/engine/indirect/IndirectEngine.java
#	src/main/java/com/jozufozu/flywheel/backend/engine/indirect/IndirectInstancer.java
#	src/main/java/com/jozufozu/flywheel/backend/engine/indirect/IndirectModel.java
#	src/main/resources/assets/flywheel/flywheel/internal/indirect/draw.vert
#	src/main/resources/assets/flywheel/flywheel/internal/instancing/main.vert
#	src/main/resources/assets/flywheel/flywheel/internal/layout.vert

docs/shader-api/fragment.glsl

@@ -7,22 +7,17 @@
 /*const*/ vec2 flw_vertexLight;
 /*const*/ vec3 flw_vertexNormal;
 
-/*const*/ float flw_distance;
-
-/*const*/ vec4 flw_var0;
-/*const*/ vec4 flw_var1;
-/*const*/ vec4 flw_var2;
-/*const*/ vec4 flw_var3;
-
 /*const*/ FlwMaterial flw_material;
 
 /*const*/ vec4 flw_sampleColor;
 
+/*const*/ float flw_distance;
+
 vec4 flw_fragColor;
 ivec2 flw_fragOverlay;
 vec2 flw_fragLight;
 
-// To be implemented by material shaders.
+// To be implemented by the material fragment shader.
 vec4 flw_fogFilter(vec4 color);
 bool flw_discardPredicate(vec4 finalColor);
 void flw_materialFragment();

docs/shader-api/material.glsl

@@ -10,12 +10,12 @@ const uint FLW_MAT_DEPTH_TEST_ALWAYS = 8u;
 
 const uint FLW_MAT_TRANSPARENCY_OPAQUE = 0u;
 const uint FLW_MAT_TRANSPARENCY_ADDITIVE = 1u;
-const uint FLW_MAT_TRANSPARENCY_LIGHTING = 2u;
+const uint FLW_MAT_TRANSPARENCY_LIGHTNING = 2u;
 const uint FLW_MAT_TRANSPARENCY_GLINT = 3u;
 const uint FLW_MAT_TRANSPARENCY_CRUMBLING = 4u;
 const uint FLW_MAT_TRANSPARENCY_TRANSLUCENT = 5u;
 
-const uint FLW_MAT_WRITE_MASK_BOTH = 0u;
+const uint FLW_MAT_WRITE_MASK_COLOR_DEPTH = 0u;
 const uint FLW_MAT_WRITE_MASK_COLOR = 1u;
 const uint FLW_MAT_WRITE_MASK_DEPTH = 2u;
 

docs/shader-api/vertex.glsl

@@ -7,20 +7,13 @@ ivec2 flw_vertexOverlay;
 vec2 flw_vertexLight;
 vec3 flw_vertexNormal;
 
-float flw_distance;
-
-vec4 flw_var0;
-vec4 flw_var1;
-vec4 flw_var2;
-vec4 flw_var3;
-
 /*const*/ FlwMaterial flw_material;
 
 // To be implemented by the instance shader.
 void flw_transformBoundingSphere(in FlwInstance i, inout vec3 center, inout float radius);
 void flw_instanceVertex(FlwInstance i);
 
-// To be implemented by material shaders.
+// To be implemented by the material vertex shader.
 void flw_materialVertex();
 
 // To be implemented by the context shader.

src/main/java/com/jozufozu/flywheel/api/material/Material.java

@@ -14,7 +14,7 @@ public interface Material {
 
 	CutoutShader cutout();
 
-	ResourceLocation baseTexture();
+	ResourceLocation texture();
 
 	/**
 	 * Should this material have linear filtering applied to the diffuse sampler?

src/main/java/com/jozufozu/flywheel/api/material/Transparency.java

@@ -3,7 +3,7 @@ package com.jozufozu.flywheel.api.material;
 public enum Transparency {
 	OPAQUE,
 	ADDITIVE,
-	LIGHTING,
+	LIGHTNING,
 	GLINT,
 	CRUMBLING,
 	TRANSLUCENT,

src/main/java/com/jozufozu/flywheel/api/material/WriteMask.java

@@ -4,7 +4,7 @@ public enum WriteMask {
 	/**
 	 * Write to both the color and depth buffers.
 	 */
-	BOTH,
+	COLOR_DEPTH,
 	/**
 	 * Write to the color buffer only.
 	 */
@@ -15,11 +15,11 @@ public enum WriteMask {
 	DEPTH,
 	;
 
-	public boolean depth() {
-		return this == BOTH || this == DEPTH;
+	public boolean color() {
+		return this == COLOR_DEPTH || this == COLOR;
 	}
 
-	public boolean color() {
-		return this == BOTH || this == COLOR;
+	public boolean depth() {
+		return this == COLOR_DEPTH || this == DEPTH;
 	}
 }

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

@@ -2,18 +2,24 @@ package com.jozufozu.flywheel.api.model;
 
 import java.util.Map;
 
+import org.joml.Vector4fc;
+
 import com.jozufozu.flywheel.api.material.Material;
 
 public interface Model {
-	Map<Material, Mesh> getMeshes();
+	Map<Material, Mesh> meshes();
+
+	/**
+	 * Get a vec4 representing this model's bounding sphere in the format (x, y, z, radius).
+	 * It should encompass all meshes' bounding spheres.
+	 *
+	 * @return A vec4 view.
+	 */
+	Vector4fc boundingSphere();
+
+	// TODO: unused. remove?
+	@Deprecated
+	int vertexCount();
 
 	void delete();
-
-	default int getVertexCount() {
-		int size = 0;
-		for (Mesh mesh : getMeshes().values()) {
-			size += mesh.vertexCount();
-		}
-		return size;
-	}
 }

src/main/java/com/jozufozu/flywheel/api/task/TaskExecutor.java

@@ -3,6 +3,9 @@ package com.jozufozu.flywheel.api.task;
 import java.util.concurrent.Executor;
 import java.util.function.BooleanSupplier;
 
+import org.jetbrains.annotations.ApiStatus;
+
+@ApiStatus.NonExtendable
 public interface TaskExecutor extends Executor {
 	/**
 	 * Wait for <em>all</em> running tasks to finish.
@@ -38,15 +41,6 @@ public interface TaskExecutor extends Executor {
 	 */
 	boolean syncWhile(BooleanSupplier cond);
 
-	/**
-	 * Check for the number of threads this executor uses.
-	 * <br>
-	 * May be helpful when determining how many chunks to divide a task into.
-	 *
-	 * @return The number of threads this executor uses.
-	 */
-	int getThreadCount();
-
 	/**
 	 * Schedule a task to be run on the main thread.
 	 * <br>
@@ -64,4 +58,13 @@ public interface TaskExecutor extends Executor {
 	 * @return {@code true} if the current thread is the main thread.
 	 */
 	boolean isMainThread();
+
+	/**
+	 * Check for the number of threads this executor uses.
+	 * <br>
+	 * May be helpful when determining how many chunks to divide a task into.
+	 *
+	 * @return The number of threads this executor uses.
+	 */
+	int getThreadCount();
 }

src/main/java/com/jozufozu/flywheel/api/visualization/VisualManager.java

@@ -1,5 +1,8 @@
 package com.jozufozu.flywheel.api.visualization;
 
+import org.jetbrains.annotations.ApiStatus;
+
+@ApiStatus.NonExtendable
 public interface VisualManager<T> {
 	/**
 	 * Get the number of game objects that are currently being visualized.

src/main/java/com/jozufozu/flywheel/api/visualization/VisualizationManager.java

@@ -1,5 +1,6 @@
 package com.jozufozu.flywheel.api.visualization;
 
+import org.jetbrains.annotations.ApiStatus;
 import org.jetbrains.annotations.Nullable;
 
 import com.jozufozu.flywheel.api.visual.Effect;
@@ -12,6 +13,7 @@ import net.minecraft.world.level.Level;
 import net.minecraft.world.level.LevelAccessor;
 import net.minecraft.world.level.block.entity.BlockEntity;
 
+@ApiStatus.NonExtendable
 public interface VisualizationManager {
 	static boolean supportsVisualization(@Nullable LevelAccessor level) {
 		return VisualizationManagerImpl.supportsVisualization(level);

src/main/java/com/jozufozu/flywheel/backend/compile/Compile.java

@@ -19,7 +19,7 @@ import com.jozufozu.flywheel.backend.compile.core.ShaderCompiler;
 import com.jozufozu.flywheel.gl.shader.GlProgram;
 import com.jozufozu.flywheel.gl.shader.GlShader;
 import com.jozufozu.flywheel.gl.shader.ShaderType;
-import com.jozufozu.flywheel.glsl.GLSLVersion;
+import com.jozufozu.flywheel.glsl.GlslVersion;
 import com.jozufozu.flywheel.glsl.ShaderSources;
 import com.jozufozu.flywheel.glsl.SourceComponent;
 
@@ -36,7 +36,7 @@ import net.minecraft.resources.ResourceLocation;
  * @param <K> The type of the key used to compile shaders.
  */
 public class Compile<K> {
-	public ShaderCompilerBuilder<K> shader(GLSLVersion glslVersion, ShaderType shaderType) {
+	public ShaderCompilerBuilder<K> shader(GlslVersion glslVersion, ShaderType shaderType) {
 		return new ShaderCompilerBuilder<>(glslVersion, shaderType);
 	}
 
@@ -99,13 +99,13 @@ public class Compile<K> {
 	}
 
 	public static class ShaderCompilerBuilder<K> {
-		private final GLSLVersion glslVersion;
+		private final GlslVersion glslVersion;
 		private final ShaderType shaderType;
 		private Consumer<Compilation> compilationCallbacks = $ -> {
 		};
 		private final List<BiFunction<K, SourceLoader, SourceComponent>> fetchers = new ArrayList<>();
 
-		public ShaderCompilerBuilder(GLSLVersion glslVersion, ShaderType shaderType) {
+		public ShaderCompilerBuilder(GlslVersion glslVersion, ShaderType shaderType) {
 			this.glslVersion = glslVersion;
 			this.shaderType = shaderType;
 		}

src/main/java/com/jozufozu/flywheel/backend/compile/FlwPrograms.java

@@ -24,8 +24,7 @@ public class FlwPrograms {
 	}
 
 	public static void reload(ResourceManager resourceManager) {
-		var empty = List.of(Flywheel.rl("api/fragment.glsl"), Flywheel.rl("api/vertex.glsl"));
-		var sources = new ShaderSources(resourceManager, empty);
+		var sources = new ShaderSources(resourceManager);
 
 		var preLoadStats = new CompilerStats();
 		var loadChecker = new SourceLoader(sources, preLoadStats);
@@ -43,12 +42,31 @@ public class FlwPrograms {
 		}
 	}
 
+	private static ImmutableList<PipelineProgramKey> createPipelineKeys() {
+		ImmutableList.Builder<PipelineProgramKey> builder = ImmutableList.builder();
+		for (Context context : Context.REGISTRY) {
+			for (InstanceType<?> instanceType : InstanceType.REGISTRY) {
+				builder.add(new PipelineProgramKey(instanceType, context));
+			}
+		}
+		return builder.build();
+	}
+
+	private static UberShaderComponent createVertexMaterialComponent(SourceLoader loadChecker) {
+		return UberShaderComponent.builder(Flywheel.rl("uber_material_vertex"))
+				.materialSources(ShaderIndices.materialVertex()
+						.all())
+				.adapt(FnSignature.ofVoid("flw_materialVertex"))
+				.switchOn(GlslExpr.variable("_flw_uberMaterialVertexIndex"))
+				.build(loadChecker);
+	}
+
 	private static UberShaderComponent createFragmentMaterialComponent(SourceLoader loadChecker) {
-		return UberShaderComponent.builder(Flywheel.rl("uber_fragment_material"))
+		return UberShaderComponent.builder(Flywheel.rl("uber_material_fragment"))
 				.materialSources(ShaderIndices.materialFragment()
 						.all())
 				.adapt(FnSignature.ofVoid("flw_materialFragment"))
-				.switchOn(GlslExpr.variable("_flw_materialFragmentID"))
+				.switchOn(GlslExpr.variable("_flw_uberMaterialFragmentIndex"))
 				.build(loadChecker);
 	}
 
@@ -61,7 +79,7 @@ public class FlwPrograms {
 						.name("flw_fogFilter")
 						.arg("vec4", "color")
 						.build(), GlslExpr.variable("color"))
-				.switchOn(GlslExpr.variable("_flw_fogID"))
+				.switchOn(GlslExpr.variable("_flw_uberFogIndex"))
 				.build(loadChecker);
 	}
 
@@ -74,16 +92,7 @@ public class FlwPrograms {
 						.name("flw_discardPredicate")
 						.arg("vec4", "color")
 						.build(), GlslExpr.boolLiteral(false))
-				.switchOn(GlslExpr.variable("_flw_cutoutID"))
-				.build(loadChecker);
-	}
-
-	private static UberShaderComponent createVertexMaterialComponent(SourceLoader loadChecker) {
-		return UberShaderComponent.builder(Flywheel.rl("vertex_material_adapter"))
-				.materialSources(ShaderIndices.materialVertex()
-						.all())
-				.adapt(FnSignature.ofVoid("flw_materialVertex"))
-				.switchOn(GlslExpr.variable("_flw_materialVertexID"))
+				.switchOn(GlslExpr.variable("_flw_uberCutoutIndex"))
 				.build(loadChecker);
 	}
 
@@ -96,16 +105,6 @@ public class FlwPrograms {
 				.build(loadChecker);
 	}
 
-	private static ImmutableList<PipelineProgramKey> createPipelineKeys() {
-		ImmutableList.Builder<PipelineProgramKey> builder = ImmutableList.builder();
-		for (Context context : Context.REGISTRY) {
-			for (InstanceType<?> instanceType : InstanceType.REGISTRY) {
-				builder.add(new PipelineProgramKey(instanceType, context));
-			}
-		}
-		return builder.build();
-	}
-
 	public static class ResourceReloadListener implements ResourceManagerReloadListener {
 		public static final ResourceReloadListener INSTANCE = new ResourceReloadListener();
 

src/main/java/com/jozufozu/flywheel/backend/compile/IndirectPrograms.java

@@ -14,7 +14,7 @@ import com.jozufozu.flywheel.backend.compile.component.UniformComponent;
 import com.jozufozu.flywheel.gl.GlCompat;
 import com.jozufozu.flywheel.gl.shader.GlProgram;
 import com.jozufozu.flywheel.gl.shader.ShaderType;
-import com.jozufozu.flywheel.glsl.GLSLVersion;
+import com.jozufozu.flywheel.glsl.GlslVersion;
 import com.jozufozu.flywheel.glsl.ShaderSources;
 import com.jozufozu.flywheel.glsl.SourceComponent;
 import com.jozufozu.flywheel.lib.util.Unit;
@@ -39,21 +39,22 @@ public class IndirectPrograms {
 		_delete();
 		var pipelineCompiler = PipelineCompiler.create(sources, Pipelines.INDIRECT, pipelineKeys, uniformComponent, vertexComponents, fragmentComponents);
 		var cullingCompiler = createCullingCompiler(uniformComponent, sources);
-		var stage2Compiler = createStage2Compiler(sources);
+		var applyCompiler = createApplyCompiler(sources);
 
 		try {
 			var pipelineResult = pipelineCompiler.compileAndReportErrors();
 			var cullingResult = cullingCompiler.compileAndReportErrors();
-			var stage2Result = stage2Compiler.compileAndReportErrors();
+			var applyResult = applyCompiler.compileAndReportErrors();
 
-			if (pipelineResult != null && cullingResult != null && stage2Result != null) {
-				instance = new IndirectPrograms(pipelineResult, cullingResult, stage2Result.get(Unit.INSTANCE));
+			if (pipelineResult != null && cullingResult != null && applyResult != null) {
+				instance = new IndirectPrograms(pipelineResult, cullingResult, applyResult.get(Unit.INSTANCE));
 			}
 		} catch (Throwable e) {
 			Flywheel.LOGGER.error("Failed to compile indirect programs", e);
 		}
 		pipelineCompiler.delete();
 		cullingCompiler.delete();
+		applyCompiler.delete();
 	}
 
 	private static ImmutableList<InstanceType<?>> createCullingKeys() {
@@ -84,22 +85,22 @@ public class IndirectPrograms {
 		return CULL.harness(sources)
 				.keys(createCullingKeys())
 				.compiler(CULL.program()
-						.link(CULL.shader(GLSLVersion.V460, ShaderType.COMPUTE)
-								.define("FLW_SUBGROUP_SIZE", GlCompat.SUBGROUP_SIZE)
+						.link(CULL.shader(GlslVersion.V460, ShaderType.COMPUTE)
+								.define("_FLW_SUBGROUP_SIZE", GlCompat.SUBGROUP_SIZE)
 								.withComponent(uniformComponent)
 								.withComponent(IndirectComponent::create)
 								.withResource(Files.INDIRECT_CULL)
 								.withResource(InstanceType::instanceShader))
-						.then((key, program) -> program.setUniformBlockBinding("FLWUniforms", 0)))
+						.then((key, program) -> program.setUniformBlockBinding("FlwUniforms", 0)))
 				.build();
 	}
 
-	private static CompilationHarness<Unit> createStage2Compiler(ShaderSources sources) {
+	private static CompilationHarness<Unit> createApplyCompiler(ShaderSources sources) {
 		return APPLY.harness(sources)
 				.keys(ImmutableList.of(Unit.INSTANCE))
 				.compiler(APPLY.program()
-						.link(APPLY.shader(GLSLVersion.V460, ShaderType.COMPUTE)
-								.define("FLW_SUBGROUP_SIZE", GlCompat.SUBGROUP_SIZE)
+						.link(APPLY.shader(GlslVersion.V460, ShaderType.COMPUTE)
+								.define("_FLW_SUBGROUP_SIZE", GlCompat.SUBGROUP_SIZE)
 								.withResource(Files.INDIRECT_APPLY)))
 				.build();
 	}

src/main/java/com/jozufozu/flywheel/backend/compile/Pipeline.java

@@ -3,13 +3,13 @@ package com.jozufozu.flywheel.backend.compile;
 import java.util.Objects;
 
 import com.jozufozu.flywheel.api.instance.InstanceType;
-import com.jozufozu.flywheel.glsl.GLSLVersion;
+import com.jozufozu.flywheel.glsl.GlslVersion;
 import com.jozufozu.flywheel.glsl.SourceComponent;
 
 import net.minecraft.resources.ResourceLocation;
 
-public record Pipeline(GLSLVersion glslVersion, ResourceLocation vertexShader, ResourceLocation fragmentShader,
-					   ResourceLocation vertexAPI, ResourceLocation fragmentAPI, InstanceAssembler assembler) {
+public record Pipeline(GlslVersion glslVersion, ResourceLocation vertexMain, ResourceLocation fragmentMain,
+					   ResourceLocation vertexApiImpl, ResourceLocation fragmentApiImpl, InstanceAssembler assembler) {
 	@FunctionalInterface
 	public interface InstanceAssembler {
 		/**
@@ -28,35 +28,35 @@ public record Pipeline(GLSLVersion glslVersion, ResourceLocation vertexShader, R
 	}
 
 	public static class Builder {
-		private GLSLVersion glslVersion;
-		private ResourceLocation vertex;
-		private ResourceLocation fragment;
-		private ResourceLocation vertexAPI;
-		private ResourceLocation fragmentAPI;
+		private GlslVersion glslVersion;
+		private ResourceLocation vertexMain;
+		private ResourceLocation fragmentMain;
+		private ResourceLocation vertexApiImpl;
+		private ResourceLocation fragmentApiImpl;
 		private InstanceAssembler assembler;
 
-		public Builder glslVersion(GLSLVersion glslVersion) {
+		public Builder glslVersion(GlslVersion glslVersion) {
 			this.glslVersion = glslVersion;
 			return this;
 		}
 
-		public Builder vertex(ResourceLocation vertex) {
-			this.vertex = vertex;
+		public Builder vertexMain(ResourceLocation shader) {
+			this.vertexMain = shader;
 			return this;
 		}
 
-		public Builder fragment(ResourceLocation fragment) {
-			this.fragment = fragment;
+		public Builder fragmentMain(ResourceLocation shader) {
+			this.fragmentMain = shader;
 			return this;
 		}
 
-		public Builder vertexAPI(ResourceLocation vertex) {
-			this.vertexAPI = vertex;
+		public Builder vertexApiImpl(ResourceLocation shader) {
+			this.vertexApiImpl = shader;
 			return this;
 		}
 
-		public Builder fragmentAPI(ResourceLocation fragment) {
-			this.fragmentAPI = fragment;
+		public Builder fragmentApiImpl(ResourceLocation shader) {
+			this.fragmentApiImpl = shader;
 			return this;
 		}
 
@@ -67,12 +67,12 @@ public record Pipeline(GLSLVersion glslVersion, ResourceLocation vertexShader, R
 
 		public Pipeline build() {
 			Objects.requireNonNull(glslVersion);
-			Objects.requireNonNull(vertex);
-			Objects.requireNonNull(fragment);
-			Objects.requireNonNull(vertexAPI);
-			Objects.requireNonNull(fragmentAPI);
+			Objects.requireNonNull(vertexMain);
+			Objects.requireNonNull(fragmentMain);
+			Objects.requireNonNull(vertexApiImpl);
+			Objects.requireNonNull(fragmentApiImpl);
 			Objects.requireNonNull(assembler);
-			return new Pipeline(glslVersion, vertex, fragment, vertexAPI, fragmentAPI, assembler);
+			return new Pipeline(glslVersion, vertexMain, fragmentMain, vertexApiImpl, fragmentApiImpl, assembler);
 		}
 	}
 }

src/main/java/com/jozufozu/flywheel/backend/compile/PipelineCompiler.java

@@ -20,25 +20,25 @@ public class PipelineCompiler {
 								.withComponent(uniformComponent)
 								.withComponent(key -> pipeline.assembler()
 										.assemble(new Pipeline.InstanceAssemblerContext(InternalLayout.LAYOUT.getAttributeCount(), key.instanceType())))
-								.withResource(pipeline.vertexAPI())
+								.withResource(pipeline.vertexApiImpl())
 								.withComponents(vertexComponents)
 								.withResource(key -> key.instanceType()
 										.instanceShader())
 								.withResource(key -> key.contextShader()
 										.vertexShader())
-								.withResource(pipeline.vertexShader()))
+								.withResource(pipeline.vertexMain()))
 						.link(PIPELINE.shader(pipeline.glslVersion(), ShaderType.FRAGMENT)
 								.enableExtension("GL_ARB_conservative_depth")
 								.withComponent(uniformComponent)
-								.withResource(pipeline.fragmentAPI())
+								.withResource(pipeline.fragmentApiImpl())
 								.withComponents(fragmentComponents)
 								.withResource(key -> key.contextShader()
 										.fragmentShader())
-								.withResource(pipeline.fragmentShader()))
+								.withResource(pipeline.fragmentMain()))
 						.then((key, program) -> {
 							key.contextShader()
 									.onProgramLink(program);
-							program.setUniformBlockBinding("FLWUniforms", 0);
+							program.setUniformBlockBinding("FlwUniforms", 0);
 						}))
 				.build();
 	}

src/main/java/com/jozufozu/flywheel/backend/compile/Pipelines.java

@@ -3,23 +3,23 @@ package com.jozufozu.flywheel.backend.compile;
 import com.jozufozu.flywheel.Flywheel;
 import com.jozufozu.flywheel.backend.compile.component.IndirectComponent;
 import com.jozufozu.flywheel.backend.compile.component.InstancedArraysComponent;
-import com.jozufozu.flywheel.glsl.GLSLVersion;
+import com.jozufozu.flywheel.glsl.GlslVersion;
 
 public final class Pipelines {
 	public static final Pipeline INSTANCED_ARRAYS = Pipeline.builder()
-			.glslVersion(GLSLVersion.V330)
-			.vertex(Flywheel.rl("internal/instancing/draw.vert"))
-			.fragment(Flywheel.rl("internal/instancing/draw.frag"))
-			.vertexAPI(Flywheel.rl("internal/instancing/api/vertex.glsl"))
-			.fragmentAPI(Flywheel.rl("internal/instancing/api/fragment.glsl"))
+			.glslVersion(GlslVersion.V330)
+			.vertexMain(Flywheel.rl("internal/instancing/main.vert"))
+			.fragmentMain(Flywheel.rl("internal/instancing/main.frag"))
+			.vertexApiImpl(Flywheel.rl("internal/instancing/api_impl.vert"))
+			.fragmentApiImpl(Flywheel.rl("internal/instancing/api_impl.frag"))
 			.assembler(InstancedArraysComponent::new)
 			.build();
 	public static final Pipeline INDIRECT = Pipeline.builder()
-			.glslVersion(GLSLVersion.V460)
-			.vertex(Flywheel.rl("internal/indirect/draw.vert"))
-			.fragment(Flywheel.rl("internal/indirect/draw.frag"))
-			.vertexAPI(Flywheel.rl("internal/indirect/api/vertex.glsl"))
-			.fragmentAPI(Flywheel.rl("internal/indirect/api/fragment.glsl"))
+			.glslVersion(GlslVersion.V460)
+			.vertexMain(Flywheel.rl("internal/indirect/main.vert"))
+			.fragmentMain(Flywheel.rl("internal/indirect/main.frag"))
+			.vertexApiImpl(Flywheel.rl("internal/indirect/api_impl.vert"))
+			.fragmentApiImpl(Flywheel.rl("internal/indirect/api_impl.frag"))
 			.assembler(IndirectComponent::create)
 			.build();
 }

src/main/java/com/jozufozu/flywheel/backend/compile/component/UniformComponent.java

@@ -36,8 +36,8 @@ public class UniformComponent implements SourceComponent {
 
 		builder.uniformBlock()
 			.layout("std140")
-			.name("FLWUniforms")
-			.member("flywheel_uniforms", "flywheel");
+			.name("FlwUniforms")
+			.member("FlywheelUniforms", "flywheel");
 
 		builder.blankLine();
 

src/main/java/com/jozufozu/flywheel/backend/compile/core/Compilation.java

@@ -12,7 +12,7 @@ import com.jozufozu.flywheel.Flywheel;
 import com.jozufozu.flywheel.gl.GlCompat;
 import com.jozufozu.flywheel.gl.shader.GlShader;
 import com.jozufozu.flywheel.gl.shader.ShaderType;
-import com.jozufozu.flywheel.glsl.GLSLVersion;
+import com.jozufozu.flywheel.glsl.GlslVersion;
 import com.jozufozu.flywheel.glsl.SourceComponent;
 import com.jozufozu.flywheel.glsl.SourceFile;
 import com.jozufozu.flywheel.lib.util.StringUtil;
@@ -31,11 +31,11 @@ public class Compilation {
 	private final List<SourceFile> files = new ArrayList<>();
 	private final StringBuilder generatedSource;
 	private final StringBuilder fullSource;
-	private final GLSLVersion glslVersion;
+	private final GlslVersion glslVersion;
 	private final ShaderType shaderType;
 	private int generatedLines = 0;
 
-	public Compilation(GLSLVersion glslVersion, ShaderType shaderType) {
+	public Compilation(GlslVersion glslVersion, ShaderType shaderType) {
 		this.glslVersion = glslVersion;
 		this.shaderType = shaderType;
 
@@ -88,12 +88,12 @@ public class Compilation {
 
 	private void appendHeader(SourceComponent component, String source) {
 		if (component instanceof SourceFile file) {
-			int fileID = files.size() + 1;
+			int fileId = files.size() + 1;
 
 			files.add(file);
 
 			fullSource.append("\n#line 0 ")
-					.append(fileID)
+					.append(fileId)
 					.append(" // ")
 					.append(file.name)
 					.append('\n');

src/main/java/com/jozufozu/flywheel/backend/compile/core/ShaderCompiler.java

@@ -12,7 +12,7 @@ import org.jetbrains.annotations.Nullable;
 
 import com.jozufozu.flywheel.gl.shader.GlShader;
 import com.jozufozu.flywheel.gl.shader.ShaderType;
-import com.jozufozu.flywheel.glsl.GLSLVersion;
+import com.jozufozu.flywheel.glsl.GlslVersion;
 import com.jozufozu.flywheel.glsl.SourceComponent;
 
 public class ShaderCompiler {
@@ -24,7 +24,7 @@ public class ShaderCompiler {
 	}
 
 	@Nullable
-	public GlShader compile(GLSLVersion glslVersion, ShaderType shaderType, Consumer<Compilation> callback, List<SourceComponent> sourceComponents) {
+	public GlShader compile(GlslVersion glslVersion, ShaderType shaderType, Consumer<Compilation> callback, List<SourceComponent> sourceComponents) {
 		var key = new ShaderKey(glslVersion, shaderType, sourceComponents);
 		var cached = shaderCache.get(key);
 		if (cached != null) {
@@ -67,6 +67,6 @@ public class ShaderCompiler {
 		included.addAll(component.included());
 	}
 
-	private record ShaderKey(GLSLVersion glslVersion, ShaderType shaderType, List<SourceComponent> sourceComponents) {
+	private record ShaderKey(GlslVersion glslVersion, ShaderType shaderType, List<SourceComponent> sourceComponents) {
 	}
 }

src/main/java/com/jozufozu/flywheel/backend/engine/MaterialEncoder.java

@@ -1,9 +1,10 @@
-package com.jozufozu.flywheel.backend;
+package com.jozufozu.flywheel.backend.engine;
 
 import com.jozufozu.flywheel.api.material.DepthTest;
 import com.jozufozu.flywheel.api.material.Material;
 import com.jozufozu.flywheel.api.material.Transparency;
 import com.jozufozu.flywheel.api.material.WriteMask;
+import com.jozufozu.flywheel.backend.ShaderIndices;
 
 import net.minecraft.util.Mth;
 

src/main/java/com/jozufozu/flywheel/backend/engine/MaterialRenderState.java

@@ -1,4 +1,4 @@
-package com.jozufozu.flywheel.backend;
+package com.jozufozu.flywheel.backend.engine;
 
 import java.util.Comparator;
 
@@ -16,7 +16,7 @@ import net.minecraft.client.Minecraft;
 import net.minecraft.client.renderer.texture.AbstractTexture;
 
 public final class MaterialRenderState {
-	public static final Comparator<Material> COMPARATOR = Comparator.comparing(Material::baseTexture)
+	public static final Comparator<Material> COMPARATOR = Comparator.comparing(Material::texture)
 			.thenComparing(Material::blur)
 			.thenComparing(Material::mipmap)
 			.thenComparing(Material::backfaceCulling)
@@ -41,7 +41,7 @@ public final class MaterialRenderState {
 		GlTextureUnit.T0.makeActive();
 		AbstractTexture texture = Minecraft.getInstance()
 				.getTextureManager()
-				.getTexture(material.baseTexture());
+				.getTexture(material.texture());
 		texture.setFilter(material.blur(), material.mipmap());
 		var textureId = texture.getId();
 		RenderSystem.setShaderTexture(0, textureId);
@@ -62,7 +62,7 @@ public final class MaterialRenderState {
 			RenderSystem.enablePolygonOffset();
 		} else {
 			RenderSystem.polygonOffset(0.0F, 0.0F);
-			RenderSystem.enablePolygonOffset();
+			RenderSystem.disablePolygonOffset();
 		}
 	}
 
@@ -115,7 +115,7 @@ public final class MaterialRenderState {
 			RenderSystem.enableBlend();
 			RenderSystem.blendFunc(GlStateManager.SourceFactor.ONE, GlStateManager.DestFactor.ONE);
 		}
-		case LIGHTING -> {
+		case LIGHTNING -> {
 			RenderSystem.enableBlend();
 			RenderSystem.blendFunc(GlStateManager.SourceFactor.SRC_ALPHA, GlStateManager.DestFactor.ONE);
 		}

src/main/java/com/jozufozu/flywheel/backend/engine/UniformBuffer.java

@@ -9,39 +9,30 @@ import com.google.common.collect.ImmutableList;
 import com.jozufozu.flywheel.api.event.ReloadLevelRendererEvent;
 import com.jozufozu.flywheel.api.uniform.ShaderUniforms;
 import com.jozufozu.flywheel.gl.buffer.GlBuffer;
-import com.jozufozu.flywheel.gl.shader.GlProgram;
 import com.jozufozu.flywheel.lib.math.MoreMath;
 import com.jozufozu.flywheel.lib.memory.MemoryBlock;
 
-import net.minecraft.util.Mth;
-
 public class UniformBuffer {
-
-	private static final int OFFSET_ALIGNMENT = GL32.glGetInteger(GL32.GL_UNIFORM_BUFFER_OFFSET_ALIGNMENT);
-	private static final int MAX_SIZE = GL32.glGetInteger(GL32.GL_MAX_UNIFORM_BLOCK_SIZE);
-	private static final int MAX_BINDINGS = GL32.glGetInteger(GL32.GL_MAX_UNIFORM_BUFFER_BINDINGS);
-	private static final boolean PO2_ALIGNMENT = Mth.isPowerOfTwo(OFFSET_ALIGNMENT);
+//	private static final int OFFSET_ALIGNMENT = GL32.glGetInteger(GL32.GL_UNIFORM_BUFFER_OFFSET_ALIGNMENT);
+//	private static final int MAX_SIZE = GL32.glGetInteger(GL32.GL_MAX_UNIFORM_BLOCK_SIZE);
+//	private static final int MAX_BINDINGS = GL32.glGetInteger(GL32.GL_MAX_UNIFORM_BUFFER_BINDINGS);
+//	private static final boolean PO2_ALIGNMENT = Mth.isPowerOfTwo(OFFSET_ALIGNMENT);
 
 	private static UniformBuffer instance;
-	private final ProviderSet providerSet;
-
-	public static UniformBuffer getInstance() {
-		if (instance == null) {
-			instance = new UniformBuffer();
-		}
-		return instance;
-	}
 
 	private final GlBuffer buffer;
+	private final ProviderSet providerSet;
 
 	private UniformBuffer() {
 		buffer = new GlBuffer();
 		providerSet = new ProviderSet(ShaderUniforms.REGISTRY.getAll());
 	}
 
-	public static void syncAndBind(GlProgram program) {
-		getInstance().sync();
-		program.bind();
+	public static UniformBuffer get() {
+		if (instance == null) {
+			instance = new UniformBuffer();
+		}
+		return instance;
 	}
 
 	public void sync() {
@@ -52,15 +43,6 @@ public class UniformBuffer {
 		GL32.glBindBufferRange(GL32.GL_UNIFORM_BUFFER, 0, buffer.handle(), 0, providerSet.data.size());
 	}
 
-	// https://stackoverflow.com/questions/3407012/rounding-up-to-the-nearest-multiple-of-a-number
-	private static int alignUniformBuffer(int numToRound) {
-		if (PO2_ALIGNMENT) {
-			return (numToRound + OFFSET_ALIGNMENT - 1) & -OFFSET_ALIGNMENT;
-		} else {
-			return ((numToRound + OFFSET_ALIGNMENT - 1) / OFFSET_ALIGNMENT) * OFFSET_ALIGNMENT;
-		}
-	}
-
 	private void delete() {
 		providerSet.delete();
 		buffer.delete();
@@ -73,6 +55,15 @@ public class UniformBuffer {
 		}
 	}
 
+//	// https://stackoverflow.com/questions/3407012/rounding-up-to-the-nearest-multiple-of-a-number
+//	private static int alignUniformBuffer(int numToRound) {
+//		if (PO2_ALIGNMENT) {
+//			return (numToRound + OFFSET_ALIGNMENT - 1) & -OFFSET_ALIGNMENT;
+//		} else {
+//			return ((numToRound + OFFSET_ALIGNMENT - 1) / OFFSET_ALIGNMENT) * OFFSET_ALIGNMENT;
+//		}
+//	}
+
 	private static class LiveProvider {
 		private final ShaderUniforms shaderUniforms;
 		private final int offset;

src/main/java/com/jozufozu/flywheel/backend/engine/batching/BatchedDrawManager.java

@@ -48,7 +48,7 @@ class BatchedDrawManager extends InstancerStorage<BatchedInstancer<?>> {
 	@Override
 	protected <I extends Instance> void add(InstancerKey<I> key, BatchedInstancer<?> instancer, Model model, RenderStage stage) {
 		var stagePlan = stagePlans.computeIfAbsent(stage, renderStage -> new BatchedStagePlan(renderStage, drawTracker));
-		var meshes = model.getMeshes();
+		var meshes = model.meshes();
 		for (var entry : meshes.entrySet()) {
 			var material = entry.getKey();
 			RenderType renderType = material.getFallbackRenderType();

src/main/java/com/jozufozu/flywheel/backend/engine/indirect/IndirectBuffers.java

@@ -16,12 +16,12 @@ public class IndirectBuffers {
 	public static final long INT_SIZE = Integer.BYTES;
 	public static final long PTR_SIZE = Pointer.POINTER_SIZE;
 
+	public static final long MODEL_STRIDE = 24;
+
 	// Byte size of a draw command, plus our added mesh data.
 	public static final long DRAW_COMMAND_STRIDE = 40;
 	public static final long DRAW_COMMAND_OFFSET = 0;
 
-	public static final long MODEL_STRIDE = 24;
-
 	// Offsets to the 3 segments
 	private static final long HANDLE_OFFSET = 0;
 	private static final long OFFSET_OFFSET = BUFFER_COUNT * INT_SIZE;
@@ -41,6 +41,9 @@ public class IndirectBuffers {
 	private static final long MODEL_SIZE_OFFSET = SIZE_OFFSET + PTR_SIZE * 2;
 	private static final long DRAW_SIZE_OFFSET = SIZE_OFFSET + PTR_SIZE * 3;
 
+	private static final float OBJECT_GROWTH_FACTOR = 1.25f;
+	private static final float MODEL_GROWTH_FACTOR = 2f;
+	private static final float DRAW_GROWTH_FACTOR = 2f;
 
 	/**
 	 * A small block of memory divided into 3 contiguous segments:
@@ -65,13 +68,13 @@ public class IndirectBuffers {
 		this.objectStride = objectStride;
 		this.multiBindBlock = MemoryBlock.calloc(BUFFERS_SIZE_BYTES, 1);
 
-		object = new ResizableStorageArray(objectStride, 1.75);
-		target = new ResizableStorageArray(INT_SIZE, 1.75);
-		model = new ResizableStorageArray(MODEL_STRIDE, 2);
-		draw = new ResizableStorageArray(DRAW_COMMAND_STRIDE, 2);
+		object = new ResizableStorageArray(objectStride, OBJECT_GROWTH_FACTOR);
+		target = new ResizableStorageArray(INT_SIZE, OBJECT_GROWTH_FACTOR);
+		model = new ResizableStorageArray(MODEL_STRIDE, MODEL_GROWTH_FACTOR);
+		draw = new ResizableStorageArray(DRAW_COMMAND_STRIDE, DRAW_GROWTH_FACTOR);
 	}
 
-	void updateCounts(int objectCount, int drawCount, int modelCount) {
+	void updateCounts(int objectCount, int modelCount, int drawCount) {
 		object.ensureCapacity(objectCount);
 		target.ensureCapacity(objectCount);
 		model.ensureCapacity(modelCount);

src/main/java/com/jozufozu/flywheel/backend/engine/indirect/IndirectCullingGroup.java

@@ -21,67 +21,114 @@ import com.jozufozu.flywheel.api.instance.InstanceType;
 import com.jozufozu.flywheel.api.material.Material;
 import com.jozufozu.flywheel.api.model.Mesh;
 import com.jozufozu.flywheel.api.model.Model;
-import com.jozufozu.flywheel.backend.MaterialRenderState;
 import com.jozufozu.flywheel.backend.compile.IndirectPrograms;
+import com.jozufozu.flywheel.backend.engine.MaterialRenderState;
 import com.jozufozu.flywheel.backend.engine.UniformBuffer;
 import com.jozufozu.flywheel.gl.GlCompat;
 import com.jozufozu.flywheel.gl.shader.GlProgram;
 import com.jozufozu.flywheel.lib.context.Contexts;
-import com.jozufozu.flywheel.lib.model.ModelUtil;
 
 public class IndirectCullingGroup<I extends Instance> {
+	private static final Comparator<IndirectDraw> DRAW_COMPARATOR = Comparator.comparing(IndirectDraw::stage)
+			.thenComparing(IndirectDraw::material, MaterialRenderState.COMPARATOR);
+
 	private static final int DRAW_BARRIER_BITS = GL_SHADER_STORAGE_BARRIER_BIT | GL_COMMAND_BARRIER_BIT;
 
-	private final GlProgram cull;
-	private final GlProgram draw;
+	private final GlProgram cullProgram;
+	private final GlProgram applyProgram;
+	private final GlProgram drawProgram;
+
 	private final long objectStride;
 	private final IndirectBuffers buffers;
-	public final IndirectMeshPool meshPool;
+	private final IndirectMeshPool meshPool;
 	private final List<IndirectModel> indirectModels = new ArrayList<>();
 	private final List<IndirectDraw> indirectDraws = new ArrayList<>();
 	private final Map<RenderStage, List<MultiDraw>> multiDraws = new EnumMap<>(RenderStage.class);
 	private boolean needsDrawBarrier;
 	private boolean needsSortDraws;
 	private int instanceCountThisFrame;
-	private final GlProgram apply;
 
 	IndirectCullingGroup(InstanceType<I> instanceType) {
+		var programs = IndirectPrograms.get();
+		cullProgram = programs.getCullingProgram(instanceType);
+		applyProgram = programs.getApplyProgram();
+		drawProgram = programs.getIndirectProgram(instanceType, Contexts.DEFAULT);
+
 		objectStride = instanceType.getLayout()
 				.getStride() + IndirectBuffers.INT_SIZE;
 
 		buffers = new IndirectBuffers(objectStride);
 
 		meshPool = new IndirectMeshPool();
-
-		var indirectPrograms = IndirectPrograms.get();
-		cull = indirectPrograms.getCullingProgram(instanceType);
-		apply = indirectPrograms.getApplyProgram();
-		draw = indirectPrograms.getIndirectProgram(instanceType, Contexts.WORLD);
 	}
 
-	public void add(IndirectInstancer<I> instancer, RenderStage stage, Model model) {
-		var meshes = model.getMeshes();
+	public void flush(StagingBuffer stagingBuffer) {
+		needsDrawBarrier = true;
+		instanceCountThisFrame = prepareModels();
 
-		var boundingSphere = ModelUtil.computeBoundingSphere(meshes.values());
-
-		int modelId = indirectModels.size();
-		instancer.setModelId(modelId);
-		var indirectModel = new IndirectModel(instancer, modelId, boundingSphere);
-		indirectModels.add(indirectModel);
-
-		for (Map.Entry<Material, Mesh> materialMeshEntry : meshes.entrySet()) {
-			IndirectMeshPool.BufferedMesh bufferedMesh = meshPool.alloc(materialMeshEntry.getValue());
-			indirectDraws.add(new IndirectDraw(indirectModel, materialMeshEntry.getKey(), bufferedMesh, stage));
+		if (nothingToDo()) {
+			return;
 		}
 
-		needsSortDraws = true;
+		buffers.updateCounts(instanceCountThisFrame, indirectModels.size(), indirectDraws.size());
+
+		if (needsSortDraws) {
+			sortDraws();
+			needsSortDraws = false;
+		}
+
+		meshPool.flush(stagingBuffer);
+		uploadObjects(stagingBuffer);
+		uploadModels(stagingBuffer);
+		uploadDraws(stagingBuffer);
+	}
+
+	public void dispatchCull() {
+		if (nothingToDo()) {
+			return;
+		}
+
+		UniformBuffer.get().sync();
+		cullProgram.bind();
+		buffers.bindForCompute();
+		glDispatchCompute(GlCompat.getComputeGroupCount(instanceCountThisFrame), 1, 1);
+	}
+
+	public void dispatchApply() {
+		if (nothingToDo()) {
+			return;
+		}
+
+		applyProgram.bind();
+		buffers.bindForCompute();
+		glMemoryBarrier(GL_SHADER_STORAGE_BARRIER_BIT);
+		glDispatchCompute(GlCompat.getComputeGroupCount(indirectDraws.size()), 1, 1);
+	}
+
+	private boolean nothingToDo() {
+		return indirectDraws.isEmpty() || instanceCountThisFrame == 0;
+	}
+
+	private boolean nothingToDo(RenderStage stage) {
+		return nothingToDo() || !multiDraws.containsKey(stage);
+	}
+
+	/**
+	 * @return the total instance count
+	 */
+	private int prepareModels() {
+		int baseInstance = 0;
+		for (var model : indirectModels) {
+			model.prepare(baseInstance);
+			baseInstance += model.instancer.getInstanceCount();
+		}
+		return baseInstance;
 	}
 
 	private void sortDraws() {
 		multiDraws.clear();
 		// sort by stage, then material
-		indirectDraws.sort(Comparator.comparing(IndirectDraw::stage)
-				.thenComparing(IndirectDraw::material, MaterialRenderState.COMPARATOR));
+		indirectDraws.sort(DRAW_COMPARATOR);
 
 		for (int start = 0, i = 0; i < indirectDraws.size(); i++) {
 			var draw1 = indirectDraws.get(i);
@@ -99,52 +146,22 @@ public class IndirectCullingGroup<I extends Instance> {
 		}
 	}
 
-	public void flush(StagingBuffer stagingBuffer) {
-		needsDrawBarrier = true;
-		instanceCountThisFrame = calculateTotalInstanceCountAndPrepareBatches();
-
-		if (nothingToDo()) {
-			return;
-		}
-
-		buffers.updateCounts(instanceCountThisFrame, indirectDraws.size(), indirectModels.size());
-
-		if (needsSortDraws) {
-			sortDraws();
-			needsSortDraws = false;
-		}
-
-		meshPool.flush(stagingBuffer);
-		uploadInstances(stagingBuffer);
-		uploadModels(stagingBuffer);
-		uploadIndirectCommands(stagingBuffer);
+	public boolean hasStage(RenderStage stage) {
+		return multiDraws.containsKey(stage);
 	}
 
-	public void dispatchCull() {
-		if (nothingToDo()) {
-			return;
+	public void add(IndirectInstancer<I> instancer, Model model, RenderStage stage) {
+		int modelIndex = indirectModels.size();
+		instancer.setModelIndex(modelIndex);
+		var indirectModel = new IndirectModel(instancer, modelIndex, model.boundingSphere());
+		indirectModels.add(indirectModel);
+
+		for (Map.Entry<Material, Mesh> entry : model.meshes().entrySet()) {
+			IndirectMeshPool.BufferedMesh bufferedMesh = meshPool.alloc(entry.getValue());
+			indirectDraws.add(new IndirectDraw(indirectModel, entry.getKey(), bufferedMesh, stage));
 		}
-		UniformBuffer.syncAndBind(cull);
-		buffers.bindForCompute();
-		glDispatchCompute(getGroupCount(instanceCountThisFrame), 1, 1);
-	}
 
-	public void dispatchApply() {
-		if (nothingToDo()) {
-			return;
-		}
-		apply.bind();
-		buffers.bindForCompute();
-		glMemoryBarrier(GL_SHADER_STORAGE_BARRIER_BIT);
-		glDispatchCompute(getGroupCount(indirectDraws.size()), 1, 1);
-	}
-
-	private boolean nothingToDo() {
-		return indirectDraws.isEmpty() || instanceCountThisFrame == 0;
-	}
-
-	private boolean nothingToDo(RenderStage stage) {
-		return nothingToDo() || !multiDraws.containsKey(stage);
+		needsSortDraws = true;
 	}
 
 	public void submit(RenderStage stage) {
@@ -152,13 +169,14 @@ public class IndirectCullingGroup<I extends Instance> {
 			return;
 		}
 
-		UniformBuffer.syncAndBind(draw);
+		UniformBuffer.get().sync();
+		drawProgram.bind();
 		meshPool.bindForDraw();
 		buffers.bindForDraw();
 
 		drawBarrier();
 
-		var flwBaseDraw = draw.getUniformLocation("_flw_baseDraw");
+		var flwBaseDraw = drawProgram.getUniformLocation("_flw_baseDraw");
 
 		for (var multiDraw : multiDraws.get(stage)) {
 			glUniform1ui(flwBaseDraw, multiDraw.start);
@@ -173,7 +191,7 @@ public class IndirectCullingGroup<I extends Instance> {
 		}
 	}
 
-	private void uploadInstances(StagingBuffer stagingBuffer) {
+	private void uploadObjects(StagingBuffer stagingBuffer) {
 		long pos = 0;
 		for (IndirectModel batch : indirectModels) {
 			var instanceCount = batch.instancer.getInstanceCount();
@@ -190,7 +208,7 @@ public class IndirectCullingGroup<I extends Instance> {
 		stagingBuffer.enqueueCopy(totalSize, handle, 0, this::writeModels);
 	}
 
-	private void uploadIndirectCommands(StagingBuffer stagingBuffer) {
+	private void uploadDraws(StagingBuffer stagingBuffer) {
 		var totalSize = indirectDraws.size() * IndirectBuffers.DRAW_COMMAND_STRIDE;
 		var handle = buffers.draw.handle();
 
@@ -199,44 +217,23 @@ public class IndirectCullingGroup<I extends Instance> {
 
 	private void writeModels(long writePtr) {
 		for (var batch : indirectModels) {
-			batch.writeModel(writePtr);
+			batch.write(writePtr);
 			writePtr += IndirectBuffers.MODEL_STRIDE;
 		}
 	}
 
 	private void writeCommands(long writePtr) {
 		for (var batch : indirectDraws) {
-			batch.writeIndirectCommand(writePtr);
+			batch.write(writePtr);
 			writePtr += IndirectBuffers.DRAW_COMMAND_STRIDE;
 		}
 	}
 
-	private int calculateTotalInstanceCountAndPrepareBatches() {
-		int baseInstance = 0;
-		for (var batch : indirectModels) {
-			batch.prepare(baseInstance);
-			baseInstance += batch.instancer.getInstanceCount();
-		}
-		return baseInstance;
-	}
-
 	public void delete() {
 		buffers.delete();
 		meshPool.delete();
 	}
 
-	public boolean hasStage(RenderStage stage) {
-		return multiDraws.containsKey(stage);
-	}
-
-	private static int getGroupCount(int threadCount) {
-		if (GlCompat.amd) {
-			return (threadCount + 63) >> 6; // ceil(threadCount / 64)
-		} else {
-			return (threadCount + 31) >> 5; // ceil(threadCount / 32)
-		}
-	}
-
 	private record MultiDraw(Material material, int start, int end) {
 		void submit() {
 			MaterialRenderState.setup(material);

src/main/java/com/jozufozu/flywheel/backend/engine/indirect/IndirectDraw.java

@@ -4,17 +4,17 @@ import org.lwjgl.system.MemoryUtil;
 
 import com.jozufozu.flywheel.api.event.RenderStage;
 import com.jozufozu.flywheel.api.material.Material;
-import com.jozufozu.flywheel.backend.MaterialEncoder;
 import com.jozufozu.flywheel.backend.ShaderIndices;
+import com.jozufozu.flywheel.backend.engine.MaterialEncoder;
 
 public class IndirectDraw {
 	private final IndirectModel model;
-	private final IndirectMeshPool.BufferedMesh mesh;
 	private final Material material;
+	private final IndirectMeshPool.BufferedMesh mesh;
 	private final RenderStage stage;
 
-	private final int vertexMaterialID;
-	private final int fragmentMaterialID;
+	private final int materialVertexIndex;
+	private final int materialFragmentIndex;
 	private final int packedFogAndCutout;
 	private final int packedMaterialProperties;
 
@@ -24,8 +24,8 @@ public class IndirectDraw {
 		this.mesh = mesh;
 		this.stage = stage;
 
-		this.vertexMaterialID = ShaderIndices.getVertexShaderIndex(material.shaders());
-		this.fragmentMaterialID = ShaderIndices.getFragmentShaderIndex(material.shaders());
+		this.materialVertexIndex = ShaderIndices.getVertexShaderIndex(material.shaders());
+		this.materialFragmentIndex = ShaderIndices.getFragmentShaderIndex(material.shaders());
 		this.packedFogAndCutout = MaterialEncoder.packFogAndCutout(material);
 		this.packedMaterialProperties = MaterialEncoder.packProperties(material);
 	}
@@ -42,16 +42,17 @@ public class IndirectDraw {
 		return stage;
 	}
 
-	public void writeIndirectCommand(long ptr) {
+	public void write(long ptr) {
 		MemoryUtil.memPutInt(ptr, mesh.indexCount()); // count
-		MemoryUtil.memPutInt(ptr + 4, 0); // instanceCount
-		MemoryUtil.memPutInt(ptr + 8, mesh.firstIndex); // firstIndex
-		MemoryUtil.memPutInt(ptr + 12, mesh.baseVertex); // baseVertex
-		MemoryUtil.memPutInt(ptr + 16, model.baseInstance); // baseInstance
+		MemoryUtil.memPutInt(ptr + 4, 0); // instanceCount - to be set by the apply shader
+		MemoryUtil.memPutInt(ptr + 8, mesh.firstIndex()); // firstIndex
+		MemoryUtil.memPutInt(ptr + 12, mesh.baseVertex()); // baseVertex
+		MemoryUtil.memPutInt(ptr + 16, model.baseInstance()); // baseInstance
 
-		MemoryUtil.memPutInt(ptr + 20, model.id); // modelID
-		MemoryUtil.memPutInt(ptr + 24, vertexMaterialID); // vertexMaterialID
-		MemoryUtil.memPutInt(ptr + 28, fragmentMaterialID); // fragmentMaterialID
+		MemoryUtil.memPutInt(ptr + 20, model.index); // modelIndex
+
+		MemoryUtil.memPutInt(ptr + 24, materialVertexIndex); // materialVertexIndex
+		MemoryUtil.memPutInt(ptr + 28, materialFragmentIndex); // materialFragmentIndex
 		MemoryUtil.memPutInt(ptr + 32, packedFogAndCutout); // packedFogAndCutout
 		MemoryUtil.memPutInt(ptr + 36, packedMaterialProperties); // packedMaterialProperties
 	}

src/main/java/com/jozufozu/flywheel/backend/engine/indirect/IndirectDrawManager.java

@@ -12,29 +12,35 @@ import com.jozufozu.flywheel.backend.engine.InstancerStorage;
 
 public class IndirectDrawManager extends InstancerStorage<IndirectInstancer<?>> {
 	private final StagingBuffer stagingBuffer = new StagingBuffer();
-	public final Map<InstanceType<?>, IndirectCullingGroup<?>> cullingGroups = new HashMap<>();
+	private final Map<InstanceType<?>, IndirectCullingGroup<?>> cullingGroups = new HashMap<>();
 
 	@Override
 	protected <I extends Instance> IndirectInstancer<?> create(InstanceType<I> type) {
 		return new IndirectInstancer<>(type);
 	}
 
+	@SuppressWarnings("unchecked")
 	@Override
 	protected <I extends Instance> void add(InstancerKey<I> key, IndirectInstancer<?> instancer, Model model, RenderStage stage) {
-		var indirectList = (IndirectCullingGroup<I>) cullingGroups.computeIfAbsent(key.type(), IndirectCullingGroup::new);
-
-		indirectList.add((IndirectInstancer<I>) instancer, stage, model);
+		var group = (IndirectCullingGroup<I>) cullingGroups.computeIfAbsent(key.type(), IndirectCullingGroup::new);
+		group.add((IndirectInstancer<I>) instancer, model, stage);
 	}
 
 	public boolean hasStage(RenderStage stage) {
-		for (var list : cullingGroups.values()) {
-			if (list.hasStage(stage)) {
+		for (var group : cullingGroups.values()) {
+			if (group.hasStage(stage)) {
 				return true;
 			}
 		}
 		return false;
 	}
 
+	public void renderStage(RenderStage stage) {
+		for (var group : cullingGroups.values()) {
+			group.submit(stage);
+		}
+	}
+
 	@Override
 	public void flush() {
 		super.flush();

src/main/java/com/jozufozu/flywheel/backend/engine/indirect/IndirectEngine.java

@@ -6,10 +6,10 @@ import com.jozufozu.flywheel.api.event.RenderContext;
 import com.jozufozu.flywheel.api.event.RenderStage;
 import com.jozufozu.flywheel.api.task.Plan;
 import com.jozufozu.flywheel.api.task.TaskExecutor;
-import com.jozufozu.flywheel.backend.MaterialRenderState;
 import com.jozufozu.flywheel.backend.engine.AbstractEngine;
 import com.jozufozu.flywheel.backend.engine.AbstractInstancer;
 import com.jozufozu.flywheel.backend.engine.InstancerStorage;
+import com.jozufozu.flywheel.backend.engine.MaterialRenderState;
 import com.jozufozu.flywheel.gl.GlStateTracker;
 import com.jozufozu.flywheel.gl.GlTextureUnit;
 import com.jozufozu.flywheel.lib.task.Flag;
@@ -61,9 +61,7 @@ public class IndirectEngine extends AbstractEngine {
 			GlTextureUnit.T2.makeActive();
 			RenderSystem.bindTexture(RenderSystem.getShaderTexture(2));
 
-			for (var list : drawManager.cullingGroups.values()) {
-				list.submit(stage);
-			}
+			drawManager.renderStage(stage);
 
 			MaterialRenderState.reset();
 

src/main/java/com/jozufozu/flywheel/backend/engine/indirect/IndirectInstancer.java

@@ -10,7 +10,7 @@ import com.jozufozu.flywheel.backend.engine.AbstractInstancer;
 public class IndirectInstancer<I extends Instance> extends AbstractInstancer<I> {
 	private final long objectStride;
 	private final InstanceWriter<I> writer;
-	private int modelId;
+	private int modelIndex;
 
 	public IndirectInstancer(InstanceType<I> type) {
 		super(type);
@@ -24,7 +24,7 @@ public class IndirectInstancer<I extends Instance> extends AbstractInstancer<I>
 		removeDeletedInstances();
 	}
 
-	public void writeSparse(StagingBuffer stagingBuffer, long start, int dstVbo) {
+	public void writeChanged(StagingBuffer stagingBuffer, long start, int dstVbo) {
 		int count = instances.size();
 		for (int i = changed.nextSetBit(0); i >= 0 && i < count; i = changed.nextSetBit(i + 1)) {
 			var instance = instances.get(i);
@@ -33,7 +33,7 @@ public class IndirectInstancer<I extends Instance> extends AbstractInstancer<I>
 		changed.clear();
 	}
 
-	public void writeFull(StagingBuffer stagingBuffer, long start, int dstVbo) {
+	public void writeAll(StagingBuffer stagingBuffer, long start, int dstVbo) {
 		long totalSize = objectStride * instances.size();
 
 		stagingBuffer.enqueueCopy(totalSize, dstVbo, start, this::writeAll);
@@ -50,12 +50,12 @@ public class IndirectInstancer<I extends Instance> extends AbstractInstancer<I>
 
 	private void writeOne(long ptr, I instance) {
 		// write modelID
-		MemoryUtil.memPutInt(ptr, modelId);
+		MemoryUtil.memPutInt(ptr, modelIndex);
 		// write object
 		writer.write(ptr + IndirectBuffers.INT_SIZE, instance);
 	}
 
-	public void setModelId(int modelId) {
-		this.modelId = modelId;
+	public void setModelIndex(int modelIndex) {
+		this.modelIndex = modelIndex;
 	}
 }

src/main/java/com/jozufozu/flywheel/backend/engine/indirect/IndirectMeshPool.java

@@ -6,7 +6,6 @@ import java.util.List;
 import java.util.Map;
 
 import org.jetbrains.annotations.Nullable;
-import org.joml.Vector4fc;
 
 import com.jozufozu.flywheel.api.model.Mesh;
 import com.jozufozu.flywheel.backend.InternalLayout;
@@ -20,9 +19,9 @@ public class IndirectMeshPool {
 	private final Map<Mesh, BufferedMesh> meshes = new HashMap<>();
 	private final List<BufferedMesh> meshList = new ArrayList<>();
 
-	final GlVertexArray vertexArray;
-	final GlBuffer vbo;
-	final GlBuffer ebo;
+	private final GlVertexArray vertexArray;
+	private final GlBuffer vbo;
+	private final GlBuffer ebo;
 
 	private boolean dirty;
 
@@ -142,9 +141,9 @@ public class IndirectMeshPool {
 
 	public static class BufferedMesh {
 		private final Mesh mesh;
-		public long byteIndex;
-		public int firstIndex;
-		public int baseVertex;
+		private long byteIndex;
+		private int baseVertex;
+		private int firstIndex;
 
 		private BufferedMesh(Mesh mesh) {
 			this.mesh = mesh;
@@ -158,8 +157,12 @@ public class IndirectMeshPool {
 			return mesh.indexCount();
 		}
 
-		public Vector4fc boundingSphere() {
-			return mesh.boundingSphere();
+		public int baseVertex() {
+			return baseVertex;
+		}
+
+		public int firstIndex() {
+			return firstIndex;
 		}
 	}
 }

src/main/java/com/jozufozu/flywheel/backend/engine/indirect/IndirectModel.java

@@ -1,28 +1,24 @@
 package com.jozufozu.flywheel.backend.engine.indirect;
 
-import org.joml.Vector4f;
 import org.joml.Vector4fc;
 import org.lwjgl.system.MemoryUtil;
 
 public class IndirectModel {
 	public final IndirectInstancer<?> instancer;
-	public final int id;
-
-	public int baseInstance = -1;
-	private boolean needsFullWrite = true;
-
+	public final int index;
 	private final Vector4fc boundingSphere;
 
-	public IndirectModel(IndirectInstancer<?> instancer, int id, Vector4f boundingSphere) {
+	private int baseInstance = -1;
+	private boolean needsFullWrite = true;
+
+	public IndirectModel(IndirectInstancer<?> instancer, int index, Vector4fc boundingSphere) {
 		this.instancer = instancer;
-		this.id = id;
+		this.index = index;
 		this.boundingSphere = boundingSphere;
 	}
 
-	public void writeModel(long ptr) {
-		MemoryUtil.memPutInt(ptr, 0); // instanceCount - to be incremented by the compute shader
-		MemoryUtil.memPutInt(ptr + 4, baseInstance); // baseInstance
-		boundingSphere.getToAddress(ptr + 8); // boundingSphere
+	public int baseInstance() {
+		return baseInstance;
 	}
 
 	public void prepare(int baseInstance) {
@@ -37,9 +33,15 @@ public class IndirectModel {
 
 	public void writeObjects(StagingBuffer stagingBuffer, long start, int dstVbo) {
 		if (needsFullWrite) {
-			instancer.writeFull(stagingBuffer, start, dstVbo);
+			instancer.writeAll(stagingBuffer, start, dstVbo);
 		} else {
-			instancer.writeSparse(stagingBuffer, start, dstVbo);
+			instancer.writeChanged(stagingBuffer, start, dstVbo);
 		}
 	}
+
+	public void write(long ptr) {
+		MemoryUtil.memPutInt(ptr, 0); // instanceCount - to be incremented by the cull shader
+		MemoryUtil.memPutInt(ptr + 4, baseInstance); // baseInstance
+		boundingSphere.getToAddress(ptr + 8); // boundingSphere
+	}
 }

src/main/java/com/jozufozu/flywheel/backend/engine/instancing/EboCache.java

@@ -17,7 +17,7 @@ import com.mojang.blaze3d.platform.GlStateManager;
 import it.unimi.dsi.fastutil.objects.Object2ReferenceMap;
 import it.unimi.dsi.fastutil.objects.Object2ReferenceOpenHashMap;
 
-public class EBOCache {
+public class EboCache {
 	private final List<Entry> quads = new ArrayList<>();
 	private final Object2ReferenceMap<Key, Entry> others = new Object2ReferenceOpenHashMap<>();
 
@@ -37,9 +37,9 @@ public class EBOCache {
 
 	private int getQuads(int indexCount) {
 		// Use an existing quad EBO if there's one big enough.
-		for (Entry quadEBO : quads) {
-			if (quadEBO.gpuSize >= indexCount * GlNumericType.UINT.byteWidth()) {
-				return quadEBO.ebo;
+		for (Entry quadEbo : quads) {
+			if (quadEbo.gpuSize >= indexCount * GlNumericType.UINT.byteWidth()) {
+				return quadEbo.ebo;
 			}
 		}
 		// If not, create a new one.
@@ -55,7 +55,6 @@ public class EBOCache {
 	}
 
 	private record Entry(int ebo, int gpuSize) {
-
 		@NotNull
 		private static Entry create(IndexSequence provider, int indexCount) {
 			int byteSize = indexCount * GlNumericType.UINT.byteWidth();

src/main/java/com/jozufozu/flywheel/backend/engine/instancing/InstancedCrumbling.java

@@ -12,14 +12,15 @@ import com.jozufozu.flywheel.api.instance.Instance;
 import com.jozufozu.flywheel.api.material.Material;
 import com.jozufozu.flywheel.api.material.Transparency;
 import com.jozufozu.flywheel.api.material.WriteMask;
-import com.jozufozu.flywheel.backend.MaterialRenderState;
 import com.jozufozu.flywheel.backend.compile.InstancingPrograms;
 import com.jozufozu.flywheel.backend.engine.InstanceHandleImpl;
+import com.jozufozu.flywheel.backend.engine.MaterialRenderState;
 import com.jozufozu.flywheel.backend.engine.UniformBuffer;
 import com.jozufozu.flywheel.gl.GlStateTracker;
 import com.jozufozu.flywheel.gl.GlTextureUnit;
 import com.jozufozu.flywheel.lib.context.Contexts;
 import com.jozufozu.flywheel.lib.material.CutoutShaders;
+import com.jozufozu.flywheel.lib.material.FogShaders;
 import com.jozufozu.flywheel.lib.material.SimpleMaterial;
 import com.mojang.blaze3d.systems.RenderSystem;
 
@@ -37,6 +38,8 @@ public class InstancedCrumbling {
 			return;
 		}
 
+		var crumblingMaterial = SimpleMaterial.builder();
+
 		try (var state = GlStateTracker.getRestoreState()) {
 			for (var shaderStateEntry : byShaderState.entrySet()) {
 				var byProgress = shaderStateEntry.getValue();
@@ -50,8 +53,9 @@ public class InstancedCrumbling {
 				var baseMaterial = shader.material();
 				int diffuseTexture = getDiffuseTexture(baseMaterial);
 
-				var crumblingMaterial = SimpleMaterial.builderOf(baseMaterial)
-						.cutout(CutoutShaders.OFF)
+				crumblingMaterial.copyFrom(baseMaterial)
+						.fog(FogShaders.NONE)
+						.cutout(CutoutShaders.ONE_TENTH)
 						.polygonOffset(true)
 						.transparency(Transparency.CRUMBLING)
 						.writeMask(WriteMask.COLOR)
@@ -60,8 +64,9 @@ public class InstancedCrumbling {
 
 				var program = InstancingPrograms.get()
 						.get(shader.instanceType(), Contexts.CRUMBLING);
-				UniformBuffer.syncAndBind(program);
+				program.bind();
 
+				UniformBuffer.get().sync();
 				InstancingEngine.uploadMaterialUniform(program, crumblingMaterial);
 
 				for (Int2ObjectMap.Entry<List<Runnable>> progressEntry : byProgress.int2ObjectEntrySet()) {
@@ -71,7 +76,7 @@ public class InstancedCrumbling {
 						continue;
 					}
 
-					crumblingMaterial.baseTexture(ModelBakery.BREAKING_LOCATIONS.get(progressEntry.getIntKey()));
+					crumblingMaterial.texture(ModelBakery.BREAKING_LOCATIONS.get(progressEntry.getIntKey()));
 
 					MaterialRenderState.setup(crumblingMaterial);
 
@@ -126,7 +131,7 @@ public class InstancedCrumbling {
 	private static int getDiffuseTexture(Material material) {
 		return Minecraft.getInstance()
 				.getTextureManager()
-				.getTexture(material.baseTexture())
+				.getTexture(material.texture())
 				.getId();
 	}
 }

src/main/java/com/jozufozu/flywheel/backend/engine/instancing/InstancedDrawManager.java

@@ -27,7 +27,7 @@ public class InstancedDrawManager extends InstancerStorage<InstancedInstancer<?>
 	 * A map of vertex types to their mesh pools.
 	 */
 	private final InstancedMeshPool meshPool = new InstancedMeshPool();
-	private final EBOCache eboCache = new EBOCache();
+	private final EboCache eboCache = new EboCache();
 
 	public DrawSet get(RenderStage stage) {
 		return drawSets.getOrDefault(stage, DrawSet.EMPTY);
@@ -66,7 +66,7 @@ public class InstancedDrawManager extends InstancerStorage<InstancedInstancer<?>
 
 		DrawSet drawSet = drawSets.computeIfAbsent(stage, DrawSet::new);
 
-		var meshes = model.getMeshes();
+		var meshes = model.meshes();
 		for (var entry : meshes.entrySet()) {
 			var mesh = alloc(entry.getValue());
 

src/main/java/com/jozufozu/flywheel/backend/engine/instancing/InstancedMeshPool.java

@@ -45,7 +45,7 @@ public class InstancedMeshPool {
 	 * @param eboCache The EBO cache to use.
 	 * @return A handle to the allocated mesh.
 	 */
-	public BufferedMesh alloc(Mesh mesh, EBOCache eboCache) {
+	public BufferedMesh alloc(Mesh mesh, EboCache eboCache) {
 		return meshes.computeIfAbsent(mesh, m -> {
 			BufferedMesh bufferedMesh = new BufferedMesh(m, byteSize, eboCache);
 			byteSize += bufferedMesh.size();
@@ -143,7 +143,7 @@ public class InstancedMeshPool {
 
 		private final Set<GlVertexArray> boundTo = new HashSet<>();
 
-		private BufferedMesh(Mesh mesh, long byteIndex, EBOCache eboCache) {
+		private BufferedMesh(Mesh mesh, long byteIndex, EboCache eboCache) {
 			this.mesh = mesh;
 			this.byteIndex = byteIndex;
 			this.ebo = eboCache.get(mesh.indexSequence(), mesh.indexCount());

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

@@ -9,13 +9,13 @@ import com.jozufozu.flywheel.api.event.RenderStage;
 import com.jozufozu.flywheel.api.material.Material;
 import com.jozufozu.flywheel.api.task.Plan;
 import com.jozufozu.flywheel.api.task.TaskExecutor;
-import com.jozufozu.flywheel.backend.MaterialEncoder;
-import com.jozufozu.flywheel.backend.MaterialRenderState;
 import com.jozufozu.flywheel.backend.ShaderIndices;
 import com.jozufozu.flywheel.backend.compile.InstancingPrograms;
 import com.jozufozu.flywheel.backend.engine.AbstractEngine;
 import com.jozufozu.flywheel.backend.engine.AbstractInstancer;
 import com.jozufozu.flywheel.backend.engine.InstancerStorage;
+import com.jozufozu.flywheel.backend.engine.MaterialEncoder;
+import com.jozufozu.flywheel.backend.engine.MaterialRenderState;
 import com.jozufozu.flywheel.backend.engine.UniformBuffer;
 import com.jozufozu.flywheel.gl.GlStateTracker;
 import com.jozufozu.flywheel.gl.GlTextureUnit;
@@ -111,9 +111,10 @@ public class InstancingEngine extends AbstractEngine {
 			}
 
 			var program = InstancingPrograms.get()
-					.get(shader.instanceType(), Contexts.WORLD);
-			UniformBuffer.syncAndBind(program);
+					.get(shader.instanceType(), Contexts.DEFAULT);
+			program.bind();
 
+			UniformBuffer.get().sync();
 			uploadMaterialUniform(program, shader.material());
 
 			MaterialRenderState.setup(shader.material());

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

@@ -135,18 +135,18 @@ public class FlwCommands {
 		command.then(Commands.literal("debugFrustum")
 				.then(Commands.literal("pause")
 						.executes(context -> {
-							FlwShaderUniforms.FRUSTUM_PAUSED = true;
+							FlwShaderUniforms.frustumPaused = true;
 							return 1;
 						}))
 				.then(Commands.literal("unpause")
 						.executes(context -> {
-							FlwShaderUniforms.FRUSTUM_PAUSED = false;
+							FlwShaderUniforms.frustumPaused = false;
 							return 1;
 						}))
 				.then(Commands.literal("capture")
 						.executes(context -> {
-							FlwShaderUniforms.FRUSTUM_PAUSED = true;
-							FlwShaderUniforms.FRUSTUM_CAPTURE = true;
+							FlwShaderUniforms.frustumPaused = true;
+							FlwShaderUniforms.frustumCapture = true;
 							return 1;
 						})));
 

src/main/java/com/jozufozu/flywheel/gl/GlCompat.java

@@ -10,6 +10,8 @@ import org.lwjgl.opengl.GLCapabilities;
 import org.lwjgl.opengl.KHRShaderSubgroup;
 import org.lwjgl.system.MemoryStack;
 
+import com.jozufozu.flywheel.lib.math.MoreMath;
+
 import net.minecraft.Util;
 
 /**
@@ -18,19 +20,19 @@ import net.minecraft.Util;
  * Each field stores an enum variant that provides access to the most appropriate version of a feature for the current
  * system.
  */
-public class GlCompat {
-	public static final boolean ALLOW_DSA = true;
+public final class GlCompat {
 	public static final GLCapabilities CAPABILITIES = GL.createCapabilities();
-	public static final boolean amd = _decideIfWeAreAMD();
-	public static final boolean windows = _decideIfWeAreWindows();
-	public static final boolean supportsIndirect = _decideIfWeSupportIndirect();
+	public static final boolean AMD = _decideIfWeAreAMD();
+	public static final boolean WINDOWS = _decideIfWeAreWindows();
+	public static final boolean ALLOW_DSA = true;
+	public static final boolean SUPPORTS_INDIRECT = _decideIfWeSupportIndirect();
 	public static final int SUBGROUP_SIZE = _subgroupSize();
 
 	private GlCompat() {
 	}
 
 	public static boolean onAMDWindows() {
-		return amd && windows;
+		return AMD && WINDOWS;
 	}
 
 	public static boolean supportsInstancing() {
@@ -38,7 +40,22 @@ public class GlCompat {
 	}
 
 	public static boolean supportsIndirect() {
-		return supportsIndirect;
+		return SUPPORTS_INDIRECT;
+	}
+
+	private static boolean _decideIfWeAreAMD() {
+		String vendor = GL20C.glGetString(GL20C.GL_VENDOR);
+
+		if (vendor == null) {
+			return false;
+		}
+
+		// vendor string I got was "ATI Technologies Inc."
+		return vendor.contains("ATI") || vendor.contains("AMD");
+	}
+
+	private static boolean _decideIfWeAreWindows() {
+		return Util.getPlatform() == Util.OS.WINDOWS;
 	}
 
 	private static boolean _decideIfWeSupportIndirect() {
@@ -50,7 +67,11 @@ public class GlCompat {
 			return GL31C.glGetInteger(KHRShaderSubgroup.GL_SUBGROUP_SIZE_KHR);
 		}
 		// try to guess
-		return amd ? 64 : 32;
+		return AMD ? 64 : 32;
+	}
+
+	public static int getComputeGroupCount(int invocations) {
+		return MoreMath.ceilingDiv(invocations, SUBGROUP_SIZE);
 	}
 
 	/**
@@ -73,20 +94,5 @@ public class GlCompat {
 			GL20C.nglShaderSource(glId, 1, pointers.address0(), 0);
 		}
 	}
-
-	private static boolean _decideIfWeAreWindows() {
-		return Util.getPlatform() == Util.OS.WINDOWS;
-	}
-
-	private static boolean _decideIfWeAreAMD() {
-		String vendor = GL20C.glGetString(GL20C.GL_VENDOR);
-
-		if (vendor == null) {
-			return false;
-		}
-
-		// vendor string I got was "ATI Technologies Inc."
-		return vendor.contains("ATI") || vendor.contains("AMD");
-	}
 }
 

src/main/java/com/jozufozu/flywheel/glsl/GlslVersion.java

@@ -1,6 +1,6 @@
 package com.jozufozu.flywheel.glsl;
 
-public enum GLSLVersion {
+public enum GlslVersion {
 	V110(110),
 	V120(120),
 	V130(130),
@@ -18,7 +18,7 @@ public enum GLSLVersion {
 
 	public final int version;
 
-	GLSLVersion(int version) {
+	GlslVersion(int version) {
 		this.version = version;
 	}
 

src/main/java/com/jozufozu/flywheel/glsl/ShaderSources.java

@@ -40,13 +40,6 @@ public class ShaderSources {
 		cache.putAll(preloadCache);
 	}
 
-	public ShaderSources(ResourceManager manager, List<ResourceLocation> preloadEmpty) {
-		this.manager = manager;
-		for (ResourceLocation rl : preloadEmpty) {
-			cache.put(rl, SourceFile.empty(rl));
-		}
-	}
-
 	@NotNull
 	public LoadResult find(ResourceLocation location) {
 		if (findStack.contains(location)) {

src/main/java/com/jozufozu/flywheel/glsl/generate/GlslSwitch.java

@@ -39,9 +39,9 @@ public class GlslSwitch implements GlslStmt {
 	@Override
 	public String prettyPrint() {
 		return """
-				switch (%s) {
-            %s
-            }""".formatted(on.prettyPrint(), formatCases());
+			switch (%s) {
+			%s
+			}""".formatted(on.prettyPrint(), formatCases());
 	}
 
     @NotNull

src/main/java/com/jozufozu/flywheel/lib/context/Contexts.java

@@ -9,7 +9,7 @@ import com.jozufozu.flywheel.gl.shader.GlProgram;
 import net.minecraft.resources.ResourceLocation;
 
 public final class Contexts {
-	public static final SimpleContext WORLD = Context.REGISTRY.registerAndGet(new SimpleContext(Files.WORLD_VERTEX, Files.WORLD_FRAGMENT, program -> {
+	public static final SimpleContext DEFAULT = Context.REGISTRY.registerAndGet(new SimpleContext(Files.DEFAULT_VERTEX, Files.DEFAULT_FRAGMENT, program -> {
 		program.bind();
 		program.setSamplerBinding("_flw_diffuseTex", 0);
 		program.setSamplerBinding("_flw_overlayTex", 1);
@@ -32,14 +32,14 @@ public final class Contexts {
 	}
 
 	public static final class Files {
-		public static final ResourceLocation WORLD_VERTEX = Names.WORLD.withSuffix(".vert");
-		public static final ResourceLocation WORLD_FRAGMENT = Names.WORLD.withSuffix(".frag");
+		public static final ResourceLocation DEFAULT_VERTEX = Names.DEFAULT.withSuffix(".vert");
+		public static final ResourceLocation DEFAULT_FRAGMENT = Names.DEFAULT.withSuffix(".frag");
 		public static final ResourceLocation CRUMBLING_VERTEX = Names.CRUMBLING.withSuffix(".vert");
 		public static final ResourceLocation CRUMBLING_FRAGMENT = Names.CRUMBLING.withSuffix(".frag");
 	}
 
 	public static final class Names {
-		public static final ResourceLocation WORLD = Flywheel.rl("context/world");
+		public static final ResourceLocation DEFAULT = Flywheel.rl("context/default");
 		public static final ResourceLocation CRUMBLING = Flywheel.rl("context/crumbling");
 	}
 }

src/main/java/com/jozufozu/flywheel/lib/instance/AbstractInstance.java

@@ -14,12 +14,12 @@ public abstract class AbstractInstance implements Instance {
 	}
 
 	@Override
-	public InstanceType<?> type() {
+	public final InstanceType<?> type() {
 		return type;
 	}
 
 	@Override
-	public InstanceHandle handle() {
+	public final InstanceHandle handle() {
 		return handle;
 	}
 

src/main/java/com/jozufozu/flywheel/lib/material/CutoutShaders.java

@@ -14,6 +14,10 @@ public class CutoutShaders {
 	 * Discard fragments with alpha close to or equal to zero.
 	 */
 	public static final CutoutShader EPSILON = CutoutShader.REGISTRY.registerAndGet(new SimpleCutoutShader(Flywheel.rl("cutout/epsilon.glsl")));
+	/**
+	 * Discard fragments with alpha less than to 0.1.
+	 */
+	public static final CutoutShader ONE_TENTH = CutoutShader.REGISTRY.registerAndGet(new SimpleCutoutShader(Flywheel.rl("cutout/one_tenth.glsl")));
 	/**
 	 * Discard fragments with alpha less than to 0.5.
 	 */

src/main/java/com/jozufozu/flywheel/lib/material/Materials.java

@@ -39,27 +39,27 @@ public final class Materials {
 			.build();
 
 	public static final Material CHUNK_CUTOUT_MIPPED_SHADED = SimpleMaterial.builder()
-			.cutout(CutoutShaders.EPSILON)
+			.cutout(CutoutShaders.HALF)
 			.useOverlay(false)
 			.fallbackRenderType(RenderType.cutoutMipped())
 			.vertexTransformer(SHADING_TRANSFORMER)
 			.build();
 	public static final Material CHUNK_CUTOUT_MIPPED_UNSHADED = SimpleMaterial.builder()
-			.cutout(CutoutShaders.EPSILON)
+			.cutout(CutoutShaders.HALF)
 			.useOverlay(false)
 			.diffuse(false)
 			.fallbackRenderType(RenderType.cutoutMipped())
 			.build();
 
 	public static final Material CHUNK_CUTOUT_SHADED = SimpleMaterial.builder()
-			.cutout(CutoutShaders.EPSILON)
+			.cutout(CutoutShaders.ONE_TENTH)
 			.mipmap(false)
 			.useOverlay(false)
 			.fallbackRenderType(RenderType.cutout())
 			.vertexTransformer(SHADING_TRANSFORMER)
 			.build();
 	public static final Material CHUNK_CUTOUT_UNSHADED = SimpleMaterial.builder()
-			.cutout(CutoutShaders.EPSILON)
+			.cutout(CutoutShaders.ONE_TENTH)
 			.mipmap(false)
 			.useOverlay(false)
 			.diffuse(false)
@@ -80,14 +80,14 @@ public final class Materials {
 			.build();
 
 	public static final Material CHUNK_TRIPWIRE_SHADED = SimpleMaterial.builder()
-			.cutout(CutoutShaders.EPSILON)
+			.cutout(CutoutShaders.ONE_TENTH)
 			.transparency(Transparency.TRANSLUCENT)
 			.useOverlay(false)
 			.fallbackRenderType(RenderType.tripwire())
 			.vertexTransformer(SHADING_TRANSFORMER)
 			.build();
 	public static final Material CHUNK_TRIPWIRE_UNSHADED = SimpleMaterial.builder()
-			.cutout(CutoutShaders.EPSILON)
+			.cutout(CutoutShaders.ONE_TENTH)
 			.transparency(Transparency.TRANSLUCENT)
 			.useOverlay(false)
 			.diffuse(false)
@@ -95,13 +95,14 @@ public final class Materials {
 			.build();
 
 	public static final Material CHEST = SimpleMaterial.builder()
-			.baseTexture(Sheets.CHEST_SHEET)
+			.cutout(CutoutShaders.ONE_TENTH)
+			.texture(Sheets.CHEST_SHEET)
 			.mipmap(false)
 			.fallbackRenderType(Sheets.chestSheet())
 			.build();
 	public static final Material SHULKER = SimpleMaterial.builder()
-			.cutout(CutoutShaders.EPSILON)
-			.baseTexture(Sheets.SHULKER_SHEET)
+			.cutout(CutoutShaders.ONE_TENTH)
+			.texture(Sheets.SHULKER_SHEET)
 			.mipmap(false)
 			.backfaceCulling(false)
 			.fallbackRenderType(Sheets.shulkerBoxSheet())
@@ -111,7 +112,7 @@ public final class Materials {
 			.fallbackRenderType(Sheets.solidBlockSheet())
 			.build();
 	public static final Material MINECART = SimpleMaterial.builder()
-			.baseTexture(MINECART_LOCATION)
+			.texture(MINECART_LOCATION)
 			.mipmap(false)
 			.fallbackRenderType(RenderType.entitySolid(MINECART_LOCATION))
 			.build();

src/main/java/com/jozufozu/flywheel/lib/material/SimpleMaterial.java

@@ -21,7 +21,7 @@ public class SimpleMaterial implements Material {
 	protected final FogShader fog;
 	protected final CutoutShader cutout;
 
-	protected final ResourceLocation baseTexture;
+	protected final ResourceLocation texture;
 	protected final boolean blur;
 	protected final boolean mipmap;
 
@@ -41,7 +41,7 @@ public class SimpleMaterial implements Material {
 		shaders = builder.shaders();
 		fog = builder.fog();
 		cutout = builder.cutout();
-		baseTexture = builder.baseTexture();
+		texture = builder.texture();
 		blur = builder.blur();
 		mipmap = builder.mipmap();
 		backfaceCulling = builder.backfaceCulling();
@@ -88,8 +88,8 @@ public class SimpleMaterial implements Material {
 	}
 
 	@Override
-	public ResourceLocation baseTexture() {
-		return baseTexture;
+	public ResourceLocation texture() {
+		return texture;
 	}
 
 	@Override
@@ -150,7 +150,7 @@ public class SimpleMaterial implements Material {
 		protected FogShader fog;
 		protected CutoutShader cutout;
 
-		protected ResourceLocation baseTexture;
+		protected ResourceLocation texture;
 		protected boolean blur;
 		protected boolean mipmap;
 
@@ -171,14 +171,14 @@ public class SimpleMaterial implements Material {
 			shaders = StandardMaterialShaders.DEFAULT;
 			fog = FogShaders.LINEAR;
 			cutout = CutoutShaders.OFF;
-			baseTexture = InventoryMenu.BLOCK_ATLAS;
+			texture = InventoryMenu.BLOCK_ATLAS;
 			blur = false;
 			mipmap = true;
 			backfaceCulling = true;
 			polygonOffset = false;
 			depthTest = DepthTest.LEQUAL;
 			transparency = Transparency.OPAQUE;
-			writeMask = WriteMask.BOTH;
+			writeMask = WriteMask.COLOR_DEPTH;
 			useOverlay = true;
 			useLight = true;
 			diffuse = true;
@@ -194,7 +194,7 @@ public class SimpleMaterial implements Material {
 			shaders = material.shaders();
 			fog = material.fog();
 			cutout = material.cutout();
-			baseTexture = material.baseTexture();
+			texture = material.texture();
 			blur = material.blur();
 			mipmap = material.mipmap();
 			backfaceCulling = material.backfaceCulling();
@@ -233,8 +233,8 @@ public class SimpleMaterial implements Material {
 			return this;
 		}
 
-		public Builder baseTexture(ResourceLocation value) {
-			this.baseTexture = value;
+		public Builder texture(ResourceLocation value) {
+			this.texture = value;
 			return this;
 		}
 
@@ -314,8 +314,8 @@ public class SimpleMaterial implements Material {
 		}
 
 		@Override
-		public ResourceLocation baseTexture() {
-			return baseTexture;
+		public ResourceLocation texture() {
+			return texture;
 		}
 
 		@Override

src/main/java/com/jozufozu/flywheel/lib/model/ModelUtil.java

@@ -2,7 +2,6 @@ package com.jozufozu.flywheel.lib.model;
 
 import java.lang.reflect.Field;
 import java.nio.ByteBuffer;
-import java.util.Collection;
 
 import org.jetbrains.annotations.Nullable;
 import org.joml.Vector4f;
@@ -101,29 +100,33 @@ public final class ModelUtil {
 		return null;
 	}
 
-	public static Vector4f computeBoundingSphere(Collection<Mesh> values) {
-		int totalVertices = 0;
-		for (Mesh value : values) {
-			totalVertices += value.vertexCount();
+	public static int computeTotalVertexCount(Iterable<Mesh> meshes) {
+		int vertexCount = 0;
+		for (Mesh mesh : meshes) {
+			vertexCount += mesh.vertexCount();
 		}
-		var block = MemoryBlock.malloc((long) totalVertices * PositionOnlyVertexList.STRIDE);
+		return vertexCount;
+	}
 
+	public static Vector4f computeBoundingSphere(Iterable<Mesh> meshes) {
+		int vertexCount = computeTotalVertexCount(meshes);
+		var block = MemoryBlock.malloc((long) vertexCount * PositionOnlyVertexList.STRIDE);
 		var vertexList = new PositionOnlyVertexList();
 
 		int baseVertex = 0;
-		for (Mesh value : values) {
+		for (Mesh mesh : meshes) {
 			vertexList.ptr(block.ptr() + (long) baseVertex * PositionOnlyVertexList.STRIDE);
-			value.write(vertexList);
-			baseVertex += value.vertexCount();
+			mesh.write(vertexList);
+			baseVertex += mesh.vertexCount();
 		}
 
 		vertexList.ptr(block.ptr());
-		vertexList.vertexCount(totalVertices);
-
-		var out = computeBoundingSphere(vertexList);
+		vertexList.vertexCount(vertexCount);
+		var sphere = computeBoundingSphere(vertexList);
 
 		block.free();
-		return out;
+
+		return sphere;
 	}
 
 	public static Vector4f computeBoundingSphere(VertexList vertexList) {

src/main/java/com/jozufozu/flywheel/lib/model/SimpleModel.java

@@ -2,27 +2,42 @@ package com.jozufozu.flywheel.lib.model;
 
 import java.util.Map;
 
+import org.joml.Vector4fc;
+
 import com.google.common.collect.ImmutableMap;
 import com.jozufozu.flywheel.api.material.Material;
 import com.jozufozu.flywheel.api.model.Mesh;
 import com.jozufozu.flywheel.api.model.Model;
 
 public class SimpleModel implements Model {
-	private final Mesh mesh;
-	private final Map<Material, Mesh> meshMap;
+	private final ImmutableMap<Material, Mesh> meshes;
+	private final Vector4fc boundingSphere;
+	private final int vertexCount;
 
-	public SimpleModel(Mesh mesh, Material material) {
-		this.mesh = mesh;
-		meshMap = ImmutableMap.of(material, mesh);
+	public SimpleModel(ImmutableMap<Material, Mesh> meshes) {
+		this.meshes = meshes;
+		this.boundingSphere = ModelUtil.computeBoundingSphere(meshes.values());
+		this.vertexCount = ModelUtil.computeTotalVertexCount(meshes.values());
 	}
 
 	@Override
-	public Map<Material, Mesh> getMeshes() {
-		return meshMap;
+	public Map<Material, Mesh> meshes() {
+		return meshes;
+	}
+
+	@Override
+	public Vector4fc boundingSphere() {
+		return boundingSphere;
+	}
+
+	@Override
+	public int vertexCount() {
+		return vertexCount;
 	}
 
 	@Override
 	public void delete() {
-		mesh.delete();
+		meshes.values()
+				.forEach(Mesh::delete);
 	}
 }

src/main/java/com/jozufozu/flywheel/lib/model/SingleMeshModel.java

@@ -0,0 +1,40 @@
+package com.jozufozu.flywheel.lib.model;
+
+import java.util.Map;
+
+import org.joml.Vector4fc;
+
+import com.google.common.collect.ImmutableMap;
+import com.jozufozu.flywheel.api.material.Material;
+import com.jozufozu.flywheel.api.model.Mesh;
+import com.jozufozu.flywheel.api.model.Model;
+
+public class SingleMeshModel implements Model {
+	private final Mesh mesh;
+	private final Map<Material, Mesh> meshMap;
+
+	public SingleMeshModel(Mesh mesh, Material material) {
+		this.mesh = mesh;
+		meshMap = ImmutableMap.of(material, mesh);
+	}
+
+	@Override
+	public Map<Material, Mesh> meshes() {
+		return meshMap;
+	}
+
+	@Override
+	public Vector4fc boundingSphere() {
+		return mesh.boundingSphere();
+	}
+
+	@Override
+	public int vertexCount() {
+		return mesh.vertexCount();
+	}
+
+	@Override
+	public void delete() {
+		mesh.delete();
+	}
+}

src/main/java/com/jozufozu/flywheel/lib/model/baked/TessellatedModel.java

@@ -1,32 +1,18 @@
 package com.jozufozu.flywheel.lib.model.baked;
 
-import java.util.Map;
-
 import com.google.common.collect.ImmutableMap;
 import com.jozufozu.flywheel.api.material.Material;
 import com.jozufozu.flywheel.api.model.Mesh;
-import com.jozufozu.flywheel.api.model.Model;
+import com.jozufozu.flywheel.lib.model.SimpleModel;
 
-public class TessellatedModel implements Model {
-	private final ImmutableMap<Material, Mesh> meshes;
+public class TessellatedModel extends SimpleModel {
 	private final boolean shadeSeparated;
 
 	public TessellatedModel(ImmutableMap<Material, Mesh> meshes, boolean shadeSeparated) {
-		this.meshes = meshes;
+		super(meshes);
 		this.shadeSeparated = shadeSeparated;
 	}
 
-	@Override
-	public Map<Material, Mesh> getMeshes() {
-		return meshes;
-	}
-
-	@Override
-	public void delete() {
-		meshes.values()
-				.forEach(Mesh::delete);
-	}
-
 	public boolean isShadeSeparated() {
 		return shadeSeparated;
 	}

src/main/java/com/jozufozu/flywheel/lib/uniform/FlwShaderUniforms.java

@@ -24,9 +24,9 @@ public class FlwShaderUniforms implements ShaderUniforms {
 	public static final ResourceLocation FILE = Flywheel.rl("uniform/flywheel.glsl");
 	public static final int SIZE = 224;
 
-	public static boolean FRUSTUM_PAUSED = false;
-	public static boolean FRUSTUM_CAPTURE = false;
-	public static boolean FOG_UPDATE = true;
+	public static boolean frustumPaused = false;
+	public static boolean frustumCapture = false;
+	public static boolean fogUpdate = true;
 
 	@Override
 	public int byteSize() {
@@ -94,9 +94,9 @@ public class FlwShaderUniforms implements ShaderUniforms {
 			MemoryUtil.memPutFloat(ptr + 108, 0f); // vec4 alignment
 			MemoryUtil.memPutInt(ptr + 112, getConstantAmbientLightFlag(context));
 
-			if (!FRUSTUM_PAUSED || FRUSTUM_CAPTURE) {
+			if (!frustumPaused || frustumCapture) {
 				MatrixMath.writePackedFrustumPlanes(ptr + 128, viewProjection);
-				FRUSTUM_CAPTURE = false;
+				frustumCapture = false;
 			}
 
 			dirty = true;
@@ -110,7 +110,7 @@ public class FlwShaderUniforms implements ShaderUniforms {
 		}
 
 		private boolean maybeUpdateFog() {
-			if (!FOG_UPDATE || ptr == MemoryUtil.NULL) {
+			if (!fogUpdate || ptr == MemoryUtil.NULL) {
 				return false;
 			}
 
@@ -125,7 +125,7 @@ public class FlwShaderUniforms implements ShaderUniforms {
 			MemoryUtil.memPutInt(ptr + 24, RenderSystem.getShaderFogShape()
 					.getIndex());
 
-			FOG_UPDATE = false;
+			fogUpdate = false;
 
 			return true;
 		}

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

@@ -14,7 +14,7 @@ import net.minecraft.client.renderer.FogRenderer;
 abstract class FogUpdateMixin {
 	@Unique
 	private static void flywheel$updateFog() {
-		FlwShaderUniforms.FOG_UPDATE = true;
+		FlwShaderUniforms.fogUpdate = true;
 	}
 
 	@Inject(method = "setupNoFog()V", at = @At("RETURN"))

src/main/java/com/jozufozu/flywheel/vanilla/BellVisual.java

@@ -15,7 +15,7 @@ import com.jozufozu.flywheel.lib.instance.InstanceTypes;
 import com.jozufozu.flywheel.lib.instance.OrientedInstance;
 import com.jozufozu.flywheel.lib.material.Materials;
 import com.jozufozu.flywheel.lib.model.ModelHolder;
-import com.jozufozu.flywheel.lib.model.SimpleModel;
+import com.jozufozu.flywheel.lib.model.SingleMeshModel;
 import com.jozufozu.flywheel.lib.model.part.ModelPartConverter;
 import com.jozufozu.flywheel.lib.visual.AbstractBlockEntityVisual;
 
@@ -26,7 +26,7 @@ import net.minecraft.world.level.block.entity.BellBlockEntity;
 
 public class BellVisual extends AbstractBlockEntityVisual<BellBlockEntity> implements DynamicVisual {
 	private static final ModelHolder BELL_MODEL = new ModelHolder(() -> {
-		return new SimpleModel(ModelPartConverter.convert(ModelLayers.BELL, BellRenderer.BELL_RESOURCE_LOCATION.sprite(), "bell_body"), Materials.BELL);
+		return new SingleMeshModel(ModelPartConverter.convert(ModelLayers.BELL, BellRenderer.BELL_RESOURCE_LOCATION.sprite(), "bell_body"), Materials.BELL);
 	});
 
 	private OrientedInstance bell;

src/main/java/com/jozufozu/flywheel/vanilla/ChestVisual.java

@@ -17,7 +17,7 @@ import com.jozufozu.flywheel.lib.instance.OrientedInstance;
 import com.jozufozu.flywheel.lib.instance.TransformedInstance;
 import com.jozufozu.flywheel.lib.material.Materials;
 import com.jozufozu.flywheel.lib.model.ModelCache;
-import com.jozufozu.flywheel.lib.model.SimpleModel;
+import com.jozufozu.flywheel.lib.model.SingleMeshModel;
 import com.jozufozu.flywheel.lib.model.part.ModelPartConverter;
 import com.jozufozu.flywheel.lib.util.Pair;
 import com.jozufozu.flywheel.lib.visual.AbstractBlockEntityVisual;
@@ -45,13 +45,13 @@ public class ChestVisual<T extends BlockEntity & LidBlockEntity> extends Abstrac
 	}
 
 	private static final ModelCache<Pair<ChestType, Material>> BOTTOM_MODELS = new ModelCache<>(key -> {
-		return new SimpleModel(ModelPartConverter.convert(LAYER_LOCATIONS.get(key.first()), key.second().sprite(), "bottom"), Materials.CHEST);
+		return new SingleMeshModel(ModelPartConverter.convert(LAYER_LOCATIONS.get(key.first()), key.second().sprite(), "bottom"), Materials.CHEST);
 	});
 	private static final ModelCache<Pair<ChestType, Material>> LID_MODELS = new ModelCache<>(key -> {
-		return new SimpleModel(ModelPartConverter.convert(LAYER_LOCATIONS.get(key.first()), key.second().sprite(), "lid"), Materials.CHEST);
+		return new SingleMeshModel(ModelPartConverter.convert(LAYER_LOCATIONS.get(key.first()), key.second().sprite(), "lid"), Materials.CHEST);
 	});
 	private static final ModelCache<Pair<ChestType, Material>> LOCK_MODELS = new ModelCache<>(key -> {
-		return new SimpleModel(ModelPartConverter.convert(LAYER_LOCATIONS.get(key.first()), key.second().sprite(), "lock"), Materials.CHEST);
+		return new SingleMeshModel(ModelPartConverter.convert(LAYER_LOCATIONS.get(key.first()), key.second().sprite(), "lock"), Materials.CHEST);
 	});
 
 	private OrientedInstance bottom;

src/main/java/com/jozufozu/flywheel/vanilla/MinecartVisual.java

@@ -11,7 +11,7 @@ import com.jozufozu.flywheel.lib.instance.TransformedInstance;
 import com.jozufozu.flywheel.lib.material.Materials;
 import com.jozufozu.flywheel.lib.model.ModelHolder;
 import com.jozufozu.flywheel.lib.model.Models;
-import com.jozufozu.flywheel.lib.model.SimpleModel;
+import com.jozufozu.flywheel.lib.model.SingleMeshModel;
 import com.jozufozu.flywheel.lib.model.part.ModelPartConverter;
 import com.jozufozu.flywheel.lib.visual.AbstractEntityVisual;
 import com.mojang.blaze3d.vertex.PoseStack;
@@ -26,7 +26,7 @@ import net.minecraft.world.phys.Vec3;
 
 public class MinecartVisual<T extends AbstractMinecart> extends AbstractEntityVisual<T> implements TickableVisual, DynamicVisual {
 	private static final ModelHolder BODY_MODEL = new ModelHolder(() -> {
-		return new SimpleModel(ModelPartConverter.convert(ModelLayers.MINECART), Materials.MINECART);
+		return new SingleMeshModel(ModelPartConverter.convert(ModelLayers.MINECART), Materials.MINECART);
 	});
 
 	private TransformedInstance body;

src/main/java/com/jozufozu/flywheel/vanilla/ShulkerBoxVisual.java

@@ -13,7 +13,7 @@ import com.jozufozu.flywheel.lib.instance.InstanceTypes;
 import com.jozufozu.flywheel.lib.instance.TransformedInstance;
 import com.jozufozu.flywheel.lib.material.Materials;
 import com.jozufozu.flywheel.lib.model.ModelCache;
-import com.jozufozu.flywheel.lib.model.SimpleModel;
+import com.jozufozu.flywheel.lib.model.SingleMeshModel;
 import com.jozufozu.flywheel.lib.model.part.ModelPartConverter;
 import com.jozufozu.flywheel.lib.transform.TransformStack;
 import com.jozufozu.flywheel.lib.visual.AbstractBlockEntityVisual;
@@ -30,10 +30,10 @@ import net.minecraft.world.level.block.entity.ShulkerBoxBlockEntity;
 
 public class ShulkerBoxVisual extends AbstractBlockEntityVisual<ShulkerBoxBlockEntity> implements DynamicVisual {
 	private static final ModelCache<Material> BASE_MODELS = new ModelCache<>(texture -> {
-		return new SimpleModel(ModelPartConverter.convert(ModelLayers.SHULKER, texture.sprite(), "base"), Materials.SHULKER);
+		return new SingleMeshModel(ModelPartConverter.convert(ModelLayers.SHULKER, texture.sprite(), "base"), Materials.SHULKER);
 	});
 	private static final ModelCache<Material> LID_MODELS = new ModelCache<>(texture -> {
-		return new SimpleModel(ModelPartConverter.convert(ModelLayers.SHULKER, texture.sprite(), "lid"), Materials.SHULKER);
+		return new SingleMeshModel(ModelPartConverter.convert(ModelLayers.SHULKER, texture.sprite(), "lid"), Materials.SHULKER);
 	});
 
 	private TransformedInstance base;

src/main/resources/assets/flywheel/flywheel/context/crumbling.frag

@@ -1,5 +1,3 @@
-#include "flywheel:api/fragment.glsl"
-
 uniform sampler2D _flw_crumblingTex;
 
 in vec2 crumblingTexCoord;
@@ -7,16 +5,12 @@ in vec2 crumblingTexCoord;
 vec4 crumblingSampleColor;
 
 void flw_beginFragment() {
-    crumblingSampleColor = texture(_flw_crumblingTex, crumblingTexCoord);
-
-    // Make the crumbling overlay transparent when the diffuse layer is transparent.
-    crumblingSampleColor.a *= flw_fragColor.a;
-
-    if (crumblingSampleColor.a < 0.01) {
-        discard;
-    }
 }
 
 void flw_endFragment() {
-    flw_fragColor = crumblingSampleColor;
+    crumblingSampleColor = texture(_flw_crumblingTex, crumblingTexCoord);
+
+    // Make the crumbling overlay transparent when the fragment color after the material shader is transparent.
+    flw_fragColor.rgb = crumblingSampleColor.rgb;
+    flw_fragColor.a *= crumblingSampleColor.a;
 }

src/main/resources/assets/flywheel/flywheel/context/crumbling.vert

@@ -1,6 +1,3 @@
-#include "flywheel:api/vertex.glsl"
-#include "flywheel:util/fog.glsl"
-
 out vec2 crumblingTexCoord;
 
 const int DOWN = 0;

src/main/resources/assets/flywheel/flywheel/context/default.frag

@@ -1,5 +1,3 @@
-#include "flywheel:api/fragment.glsl"
-
 void flw_beginFragment() {
 }
 

src/main/resources/assets/flywheel/flywheel/context/default.vert

@@ -0,0 +1,5 @@
+void flw_beginVertex() {
+}
+
+void flw_endVertex() {
+}

src/main/resources/assets/flywheel/flywheel/context/world.vert

@@ -1,8 +0,0 @@
-#include "flywheel:api/vertex.glsl"
-#include "flywheel:util/fog.glsl"
-
-void flw_beginVertex() {
-}
-
-void flw_endVertex() {
-}

src/main/resources/assets/flywheel/flywheel/cutout/epsilon.glsl

@@ -1,3 +1,3 @@
-bool flw_discardPredicate(vec4 finalColor) {
-    return finalColor.a < 0.01;
+bool flw_discardPredicate(vec4 color) {
+    return color.a < 0.01;
 }

src/main/resources/assets/flywheel/flywheel/cutout/half.glsl

@@ -1,3 +1,3 @@
-bool flw_discardPredicate(vec4 finalColor) {
-    return finalColor.a < 0.5;
+bool flw_discardPredicate(vec4 color) {
+    return color.a < 0.5;
 }

src/main/resources/assets/flywheel/flywheel/cutout/off.glsl

@@ -1,3 +1,3 @@
-bool flw_discardPredicate(vec4 finalColor) {
+bool flw_discardPredicate(vec4 color) {
     return false;
 }

src/main/resources/assets/flywheel/flywheel/cutout/one_tenth.glsl

@@ -0,0 +1,3 @@
+bool flw_discardPredicate(vec4 color) {
+    return color.a < 0.1;
+}

src/main/resources/assets/flywheel/flywheel/fog/linear.glsl

@@ -1,5 +1,12 @@
-#include "flywheel:util/fog.glsl"
+vec4 linearFog(vec4 color, float distance, float fogStart, float fogEnd, vec4 fogColor) {
+    if (distance <= fogStart) {
+        return color;
+    }
+
+    float fogValue = distance < fogEnd ? smoothstep(fogStart, fogEnd, distance) : 1.0;
+    return vec4(mix(color.rgb, fogColor.rgb, fogValue * fogColor.a), color.a);
+}
 
 vec4 flw_fogFilter(vec4 color) {
-    return linear_fog(color, flw_distance, flywheel.fogRange.x, flywheel.fogRange.y, flywheel.fogColor);
+    return linearFog(color, flw_distance, flywheel.fogRange.x, flywheel.fogRange.y, flywheel.fogColor);
 }

src/main/resources/assets/flywheel/flywheel/fog/linear_fade.glsl

@@ -1,5 +1,13 @@
-#include "flywheel:util/fog.glsl"
+vec4 linearFogFade(vec4 color, float distance, float fogStart, float fogEnd) {
+    if (distance <= fogStart) {
+        return color;
+    } else if (distance >= fogEnd) {
+        return vec4(0.0);
+    }
+
+    return color * smoothstep(fogEnd, fogStart, distance);
+}
 
 vec4 flw_fogFilter(vec4 color) {
-    return linear_fog_fade(color, flw_distance, flywheel.fogRange.x, flywheel.fogRange.y);
+    return linearFogFade(color, flw_distance, flywheel.fogRange.x, flywheel.fogRange.y);
 }

src/main/resources/assets/flywheel/flywheel/instance/oriented.vert

@@ -1,4 +1,3 @@
-#include "flywheel:api/vertex.glsl"
 #include "flywheel:util/quaternion.glsl"
 
 void flw_transformBoundingSphere(in FlwInstance i, inout vec3 center, inout float radius) {

src/main/resources/assets/flywheel/flywheel/instance/transformed.vert

@@ -1,5 +1,3 @@
-#include "flywheel:api/vertex.glsl"
-
 void flw_transformBoundingSphere(in FlwInstance i, inout vec3 center, inout float radius) {
     mat4 pose = i.pose;
     center = (pose * vec4(center, 1.0)).xyz;

src/main/resources/assets/flywheel/flywheel/internal/common_api_impl.frag

@@ -0,0 +1,18 @@
+#include "flywheel:internal/material.glsl"
+
+in vec4 flw_vertexPos;
+in vec4 flw_vertexColor;
+in vec2 flw_vertexTexCoord;
+flat in ivec2 flw_vertexOverlay;
+in vec2 flw_vertexLight;
+in vec3 flw_vertexNormal;
+
+in float flw_distance;
+
+vec4 flw_sampleColor;
+
+FlwMaterial flw_material;
+
+vec4 flw_fragColor;
+ivec2 flw_fragOverlay;
+vec2 flw_fragLight;

src/main/resources/assets/flywheel/flywheel/internal/common_api_impl.vert

@@ -0,0 +1,12 @@
+#include "flywheel:internal/material.glsl"
+
+out vec4 flw_vertexPos;
+out vec4 flw_vertexColor;
+out vec2 flw_vertexTexCoord;
+flat out ivec2 flw_vertexOverlay;
+out vec2 flw_vertexLight;
+out vec3 flw_vertexNormal;
+
+out float flw_distance;
+
+FlwMaterial flw_material;

src/main/resources/assets/flywheel/flywheel/internal/fog_distance.glsl

@@ -0,0 +1,21 @@
+float sphericalDistance(vec3 relativePos) {
+    return length(relativePos);
+}
+
+float cylindricalDistance(vec3 relativePos) {
+    float distXZ = length(relativePos.xz);
+    float distY = abs(relativePos.y);
+    return max(distXZ, distY);
+}
+
+float fogDistance(vec3 relativePos, int fogShape) {
+    if (fogShape == 0) {
+        return sphericalDistance(relativePos);
+    } else {
+        return cylindricalDistance(relativePos);
+    }
+}
+
+float fogDistance(vec3 worldPos, vec3 cameraPos, int fogShape) {
+    return fogDistance(worldPos - cameraPos, fogShape);
+}

src/main/resources/assets/flywheel/flywheel/internal/indirect/api/fragment.glsl

@@ -1,44 +0,0 @@
-// API
-// ------------------------------------------
-
-#include "flywheel:api/material.glsl"
-
-in vec4 flw_vertexPos;
-in vec4 flw_vertexColor;
-in vec2 flw_vertexTexCoord;
-flat in ivec2 flw_vertexOverlay;
-in vec2 flw_vertexLight;
-in vec3 flw_vertexNormal;
-
-in float flw_distance;
-
-in vec4 flw_var0;
-in vec4 flw_var1;
-in vec4 flw_var2;
-in vec4 flw_var3;
-
-FlwMaterial flw_material;
-
-vec4 flw_sampleColor;
-
-vec4 flw_fragColor;
-ivec2 flw_fragOverlay;
-vec2 flw_fragLight;
-
-vec4 flw_fogFilter(vec4 color);
-
-bool flw_discardPredicate(vec4 finalColor);
-
-void flw_beginFragment();
-void flw_materialFragment();
-void flw_endFragment();
-
-// ------------------------------------------
-// INTERNAL
-// ------------------------------------------
-
-uint _flw_materialFragmentID;
-uint _flw_fogID;
-uint _flw_cutoutID;
-
-// ------------------------------------------

src/main/resources/assets/flywheel/flywheel/internal/indirect/api/vertex.glsl

@@ -1,36 +0,0 @@
-// API
-// ------------------------------------------
-
-#include "flywheel:api/material.glsl"
-
-out vec4 flw_vertexPos;
-out vec4 flw_vertexColor;
-out vec2 flw_vertexTexCoord;
-flat out ivec2 flw_vertexOverlay;
-out vec2 flw_vertexLight;
-out vec3 flw_vertexNormal;
-
-out float flw_distance;
-
-out vec4 flw_var0;
-out vec4 flw_var1;
-out vec4 flw_var2;
-out vec4 flw_var3;
-
-FlwMaterial flw_material;
-
-void flw_layoutVertex();
-void flw_beginVertex();
-void flw_instanceVertex(FlwInstance i);
-void flw_materialVertex();
-void flw_endVertex();
-
-// ------------------------------------------
-// INTERNAL
-// ------------------------------------------
-
-uint _flw_materialVertexID;
-
-FlwInstance _flw_unpackInstance(FlwPackedInstance i);
-
-// ------------------------------------------

src/main/resources/assets/flywheel/flywheel/internal/indirect/api_impl.frag

@@ -0,0 +1,5 @@
+#include "flywheel:internal/common_api_impl.frag"
+
+uint _flw_uberMaterialFragmentIndex;
+uint _flw_uberFogIndex;
+uint _flw_uberCutoutIndex;

src/main/resources/assets/flywheel/flywheel/internal/indirect/api_impl.vert

@@ -0,0 +1,3 @@
+#include "flywheel:internal/common_api_impl.vert"
+
+uint _flw_uberMaterialVertexIndex;

src/main/resources/assets/flywheel/flywheel/internal/indirect/apply.glsl

@@ -2,27 +2,25 @@
 #include "flywheel:internal/indirect/model_descriptor.glsl"
 #include "flywheel:internal/indirect/draw_command.glsl"
 
-layout(local_size_x = FLW_SUBGROUP_SIZE) in;
+layout(local_size_x = _FLW_SUBGROUP_SIZE) in;
 
-layout(std430, binding = MODEL_BINDING) restrict readonly buffer ModelDescriptors {
+layout(std430, binding = _FLW_MODEL_BUFFER_BINDING) restrict readonly buffer ModelBuffer {
     ModelDescriptor models[];
 };
 
-layout(std430, binding = DRAW_BINDING) restrict buffer MeshDrawCommands {
+layout(std430, binding = _FLW_DRAW_BUFFER_BINDING) restrict buffer DrawBuffer {
     MeshDrawCommand drawCommands[];
 };
 
 // Apply the results of culling to the draw commands.
 void main() {
-    uint drawID = gl_GlobalInvocationID.x;
+    uint drawIndex = gl_GlobalInvocationID.x;
 
-    if (drawID >= drawCommands.length()) {
+    if (drawIndex >= drawCommands.length()) {
         return;
     }
 
-    uint modelID = drawCommands[drawID].modelID;
-
-    uint instanceCount = models[modelID].instanceCount;
-
-    drawCommands[drawID].instanceCount = instanceCount;
+    uint modelIndex = drawCommands[drawIndex].modelIndex;
+    uint instanceCount = models[modelIndex].instanceCount;
+    drawCommands[drawIndex].instanceCount = instanceCount;
 }

src/main/resources/assets/flywheel/flywheel/internal/indirect/buffers.glsl

@@ -1,4 +1,4 @@
-#define OBJECT_BINDING 0
-#define TARGET_BINDING 1
-#define MODEL_BINDING 2
-#define DRAW_BINDING 3
+#define _FLW_OBJECT_BUFFER_BINDING 0
+#define _FLW_TARGET_BUFFER_BINDING 1
+#define _FLW_MODEL_BUFFER_BINDING 2
+#define _FLW_DRAW_BUFFER_BINDING 3

src/main/resources/assets/flywheel/flywheel/internal/indirect/cull.glsl

@@ -2,7 +2,7 @@
 #include "flywheel:internal/indirect/model_descriptor.glsl"
 #include "flywheel:internal/indirect/object.glsl"
 
-layout(local_size_x = FLW_SUBGROUP_SIZE) in;
+layout(local_size_x = _FLW_SUBGROUP_SIZE) in;
 
 // need to add stubs so the instance shader compiles.
 vec4 flw_vertexPos;
@@ -19,15 +19,15 @@ vec4 flw_var3;
 
 void flw_transformBoundingSphere(in FlwInstance i, inout vec3 center, inout float radius);
 
-layout(std430, binding = OBJECT_BINDING) restrict readonly buffer ObjectBuffer {
+layout(std430, binding = _FLW_OBJECT_BUFFER_BINDING) restrict readonly buffer ObjectBuffer {
     Object objects[];
 };
 
-layout(std430, binding = TARGET_BINDING) restrict writeonly buffer TargetBuffer {
-    uint objectIDs[];
+layout(std430, binding = _FLW_TARGET_BUFFER_BINDING) restrict writeonly buffer TargetBuffer {
+    uint objectIndices[];
 };
 
-layout(std430, binding = MODEL_BINDING) restrict buffer ModelDescriptors {
+layout(std430, binding = _FLW_MODEL_BUFFER_BINDING) restrict buffer ModelBuffer {
     ModelDescriptor models[];
 };
 
@@ -44,14 +44,14 @@ bool testSphere(vec3 center, float radius) {
     return all(xyInside) && all(zInside);
 }
 
-bool isVisible(uint objectID, uint modelID) {
-    BoundingSphere sphere = models[modelID].boundingSphere;
+bool isVisible(uint objectIndex, uint modelIndex) {
+    BoundingSphere sphere = models[modelIndex].boundingSphere;
 
     vec3 center;
     float radius;
-    unpackBoundingSphere(sphere, center, radius);
+    _flw_unpackBoundingSphere(sphere, center, radius);
 
-    FlwInstance instance = _flw_unpackInstance(objects[objectID].instance);
+    FlwInstance instance = _flw_unpackInstance(objects[objectIndex].instance);
 
     flw_transformBoundingSphere(instance, center, radius);
 
@@ -59,18 +59,17 @@ bool isVisible(uint objectID, uint modelID) {
 }
 
 void main() {
-    uint objectID = gl_GlobalInvocationID.x;
+    uint objectIndex = gl_GlobalInvocationID.x;
 
-    if (objectID >= objects.length()) {
+    if (objectIndex >= objects.length()) {
         return;
     }
 
-    uint modelID = objects[objectID].modelID;
+    uint modelIndex = objects[objectIndex].modelIndex;
 
-    if (isVisible(objectID, modelID)) {
-        uint batchIndex = atomicAdd(models[modelID].instanceCount, 1);
-        uint globalIndex = models[modelID].baseInstance + batchIndex;
-
-        objectIDs[globalIndex] = objectID;
+    if (isVisible(objectIndex, modelIndex)) {
+        uint localIndex = atomicAdd(models[modelIndex].instanceCount, 1);
+        uint targetIndex = models[modelIndex].baseInstance + localIndex;
+        objectIndices[targetIndex] = objectIndex;
     }
 }

src/main/resources/assets/flywheel/flywheel/internal/indirect/draw.vert

@@ -1,56 +0,0 @@
-#include "flywheel:internal/indirect/api/vertex.glsl"
-#include "flywheel:internal/indirect/buffers.glsl"
-#include "flywheel:internal/indirect/draw_command.glsl"
-#include "flywheel:internal/indirect/object.glsl"
-#include "flywheel:internal/material.glsl"
-#include "flywheel:internal/vertex_input.glsl"
-#include "flywheel:util/diffuse.glsl"
-
-flat out uvec3 _flw_material;
-
-layout(std430, binding = OBJECT_BINDING) restrict readonly buffer ObjectBuffer {
-    Object objects[];
-};
-
-layout(std430, binding = TARGET_BINDING) restrict readonly buffer TargetBuffer {
-    uint objectIDs[];
-};
-
-layout(std430, binding = DRAW_BINDING) restrict readonly buffer DrawCommands {
-    MeshDrawCommand drawCommands[];
-};
-
-uniform uint _flw_baseDraw;
-
-void main() {
-    uint instanceIndex = objectIDs[gl_BaseInstance + gl_InstanceID];
-    uint batchID = gl_DrawID + _flw_baseDraw;
-    FlwInstance i = _flw_unpackInstance(objects[instanceIndex].instance);
-
-    _flw_materialVertexID = drawCommands[batchID].vertexMaterialID;
-    uint p = drawCommands[batchID].packedMaterialProperties;
-
-    _flw_unpackMaterialProperties(p, flw_material);
-    _flw_material = uvec3(drawCommands[batchID].fragmentMaterialID, drawCommands[batchID].packedFogAndCutout, p);
-
-    _flw_layoutVertex();
-    flw_beginVertex();
-    flw_instanceVertex(i);
-    flw_materialVertex();
-    flw_endVertex();
-
-    flw_vertexNormal = normalize(flw_vertexNormal);
-
-    if (flw_material.diffuse) {
-        float diffuseFactor;
-        if (flywheel.constantAmbientLight == 1) {
-            diffuseFactor = diffuseNether(flw_vertexNormal);
-        } else {
-            diffuseFactor = diffuse(flw_vertexNormal);
-        }
-        flw_vertexColor = vec4(flw_vertexColor.rgb * diffuseFactor, flw_vertexColor.a);
-    }
-
-    flw_distance = fog_distance(flw_vertexPos.xyz, flywheel.cameraPos.xyz, flywheel.fogShape);
-    gl_Position = flywheel.viewProjection * flw_vertexPos;
-}

src/main/resources/assets/flywheel/flywheel/internal/indirect/draw_command.glsl

@@ -5,9 +5,10 @@ struct MeshDrawCommand {
     uint vertexOffset;
     uint baseInstance;
 
-    uint modelID;
-    uint vertexMaterialID;
-    uint fragmentMaterialID;
+    uint modelIndex;
+
+    uint materialVertexIndex;
+    uint materialFragmentIndex;
     uint packedFogAndCutout;
     uint packedMaterialProperties;
 };

src/main/resources/assets/flywheel/flywheel/internal/indirect/main.frag

@@ -1,5 +1,4 @@
-#include "flywheel:internal/indirect/api/fragment.glsl"
-#include "flywheel:internal/material.glsl"
+#include "flywheel:internal/packed_material.glsl"
 
 // optimize discard usage
 #ifdef GL_ARB_conservative_depth
@@ -10,15 +9,14 @@ uniform sampler2D _flw_diffuseTex;
 uniform sampler2D _flw_overlayTex;
 uniform sampler2D _flw_lightTex;
 
-flat in uvec3 _flw_material;
+flat in uvec3 _flw_packedMaterial;
 
-out vec4 _flw_fragColor;
+out vec4 _flw_outputColor;
 
 void main() {
-    _flw_materialFragmentID = _flw_material.x;
-
-    _flw_unpackUint2x16(_flw_material.y, _flw_cutoutID, _flw_fogID);
-    _flw_unpackMaterialProperties(_flw_material.z, flw_material);
+    _flw_uberMaterialFragmentIndex = _flw_packedMaterial.x;
+    _flw_unpackUint2x16(_flw_packedMaterial.y, _flw_uberCutoutIndex, _flw_uberFogIndex);
+    _flw_unpackMaterialProperties(_flw_packedMaterial.z, flw_material);
 
     flw_sampleColor = texture(_flw_diffuseTex, flw_vertexTexCoord);
     flw_fragColor = flw_vertexColor * flw_sampleColor;
@@ -45,5 +43,5 @@ void main() {
         discard;
     }
 
-    _flw_fragColor = flw_fogFilter(color);
+    _flw_outputColor = flw_fogFilter(color);
 }

src/main/resources/assets/flywheel/flywheel/internal/indirect/main.vert

@@ -0,0 +1,57 @@
+#include "flywheel:internal/diffuse.glsl"
+#include "flywheel:internal/fog_distance.glsl"
+#include "flywheel:internal/vertex_input.glsl"
+#include "flywheel:internal/packed_material.glsl"
+#include "flywheel:internal/indirect/buffers.glsl"
+#include "flywheel:internal/indirect/draw_command.glsl"
+#include "flywheel:internal/indirect/object.glsl"
+
+layout(std430, binding = _FLW_OBJECT_BUFFER_BINDING) restrict readonly buffer ObjectBuffer {
+    Object objects[];
+};
+
+layout(std430, binding = _FLW_TARGET_BUFFER_BINDING) restrict readonly buffer TargetBuffer {
+    uint objectIndices[];
+};
+
+layout(std430, binding = _FLW_DRAW_BUFFER_BINDING) restrict readonly buffer DrawBuffer {
+    MeshDrawCommand drawCommands[];
+};
+
+uniform uint _flw_baseDraw;
+
+flat out uvec3 _flw_packedMaterial;
+
+void main() {
+    uint drawIndex = gl_DrawID + _flw_baseDraw;
+    MeshDrawCommand draw = drawCommands[drawIndex];
+
+    _flw_uberMaterialVertexIndex = draw.materialVertexIndex;
+    uint packedMaterialProperties = draw.packedMaterialProperties;
+    _flw_unpackMaterialProperties(packedMaterialProperties, flw_material);
+    _flw_packedMaterial = uvec3(draw.materialFragmentIndex, draw.packedFogAndCutout, packedMaterialProperties);
+
+    uint objectIndex = objectIndices[gl_BaseInstance + gl_InstanceID];
+    FlwInstance instance = _flw_unpackInstance(objects[objectIndex].instance);
+
+    _flw_layoutVertex();
+    flw_beginVertex();
+    flw_instanceVertex(instance);
+    flw_materialVertex();
+    flw_endVertex();
+
+    flw_vertexNormal = normalize(flw_vertexNormal);
+
+    if (flw_material.diffuse) {
+        float diffuseFactor;
+        if (flywheel.constantAmbientLight == 1) {
+            diffuseFactor = diffuseNether(flw_vertexNormal);
+        } else {
+            diffuseFactor = diffuse(flw_vertexNormal);
+        }
+        flw_vertexColor = vec4(flw_vertexColor.rgb * diffuseFactor, flw_vertexColor.a);
+    }
+
+    flw_distance = fogDistance(flw_vertexPos.xyz, flywheel.cameraPos.xyz, flywheel.fogShape);
+    gl_Position = flywheel.viewProjection * flw_vertexPos;
+}

src/main/resources/assets/flywheel/flywheel/internal/indirect/model_descriptor.glsl

@@ -5,13 +5,13 @@ struct BoundingSphere {
     float radius;
 };
 
-void unpackBoundingSphere(in BoundingSphere sphere, out vec3 center, out float radius) {
-    center = vec3(sphere.x, sphere.y, sphere.z);
-    radius = sphere.radius;
-}
-
 struct ModelDescriptor {
     uint instanceCount;
     uint baseInstance;
     BoundingSphere boundingSphere;
 };
+
+void _flw_unpackBoundingSphere(in BoundingSphere sphere, out vec3 center, out float radius) {
+    center = vec3(sphere.x, sphere.y, sphere.z);
+    radius = sphere.radius;
+}

src/main/resources/assets/flywheel/flywheel/internal/indirect/object.glsl

@@ -1,4 +1,4 @@
 struct Object {
-    uint modelID;
+    uint modelIndex;
     FlwPackedInstance instance;
 };

src/main/resources/assets/flywheel/flywheel/internal/instancing/api/fragment.glsl

@@ -1,43 +0,0 @@
-// API
-// -----------------------------------------
-#include "flywheel:api/material.glsl"
-
-in vec4 flw_vertexPos;
-in vec4 flw_vertexColor;
-in vec2 flw_vertexTexCoord;
-flat in ivec2 flw_vertexOverlay;
-in vec2 flw_vertexLight;
-in vec3 flw_vertexNormal;
-
-in float flw_distance;
-
-in vec4 flw_var0;
-in vec4 flw_var1;
-in vec4 flw_var2;
-in vec4 flw_var3;
-
-vec4 flw_sampleColor;
-
-vec4 flw_fragColor;
-ivec2 flw_fragOverlay;
-vec2 flw_fragLight;
-
-FlwMaterial flw_material;
-
-vec4 flw_fogFilter(vec4 color);
-
-bool flw_discardPredicate(vec4 finalColor);
-
-void flw_beginFragment();
-void flw_materialFragment();
-void flw_endFragment();
-
-// -----------------------------------------
-// INTERNAL
-// -----------------------------------------
-
-uint _flw_materialFragmentID;
-uint _flw_fogID;
-uint _flw_cutoutID;
-
-// -----------------------------------------

src/main/resources/assets/flywheel/flywheel/internal/instancing/api/vertex.glsl

@@ -1,35 +0,0 @@
-// API
-// ------------------------------------
-#include "flywheel:api/material.glsl"
-
-out vec4 flw_vertexPos;
-out vec4 flw_vertexColor;
-out vec2 flw_vertexTexCoord;
-flat out ivec2 flw_vertexOverlay;
-out vec2 flw_vertexLight;
-out vec3 flw_vertexNormal;
-
-out float flw_distance;
-
-out vec4 flw_var0;
-out vec4 flw_var1;
-out vec4 flw_var2;
-out vec4 flw_var3;
-
-FlwMaterial flw_material;
-
-void flw_layoutVertex();
-void flw_beginVertex();
-void flw_instanceVertex(FlwInstance i);
-void flw_materialVertex();
-void flw_endVertex();
-
-// ------------------------------------
-// INTERNAL
-// ------------------------------------
-
-uint _flw_materialVertexID;
-
-FlwInstance _flw_unpackInstance();
-
-// ------------------------------------

src/main/resources/assets/flywheel/flywheel/internal/instancing/api_impl.frag

@@ -0,0 +1,5 @@
+#include "flywheel:internal/common_api_impl.frag"
+
+uint _flw_uberMaterialFragmentIndex;
+uint _flw_uberFogIndex;
+uint _flw_uberCutoutIndex;

src/main/resources/assets/flywheel/flywheel/internal/instancing/api_impl.vert

@@ -0,0 +1,3 @@
+#include "flywheel:internal/common_api_impl.vert"
+
+uint _flw_uberMaterialVertexIndex;

src/main/resources/assets/flywheel/flywheel/internal/instancing/main.frag

@@ -1,5 +1,4 @@
-#include "flywheel:internal/instancing/api/fragment.glsl"
-#include "flywheel:internal/material.glsl"
+#include "flywheel:internal/packed_material.glsl"
 
 // optimize discard usage
 #ifdef GL_ARB_conservative_depth
@@ -12,12 +11,11 @@ uniform sampler2D _flw_lightTex;
 
 uniform uvec4 _flw_packedMaterial;
 
-out vec4 _flw_fragColor;
+out vec4 _flw_outputColor;
 
 void main() {
-    _flw_materialFragmentID = _flw_packedMaterial.y;
-
-    _flw_unpackUint2x16(_flw_packedMaterial.z, _flw_cutoutID, _flw_fogID);
+    _flw_uberMaterialFragmentIndex = _flw_packedMaterial.y;
+    _flw_unpackUint2x16(_flw_packedMaterial.z, _flw_uberCutoutIndex, _flw_uberFogIndex);
     _flw_unpackMaterialProperties(_flw_packedMaterial.w, flw_material);
 
     flw_sampleColor = texture(_flw_diffuseTex, flw_vertexTexCoord);
@@ -45,5 +43,5 @@ void main() {
         discard;
     }
 
-    _flw_fragColor = flw_fogFilter(color);
+    _flw_outputColor = flw_fogFilter(color);
 }

src/main/resources/assets/flywheel/flywheel/internal/instancing/main.vert

@@ -1,20 +1,19 @@
-#include "flywheel:internal/instancing/api/vertex.glsl"
-#include "flywheel:internal/material.glsl"
+#include "flywheel:internal/diffuse.glsl"
+#include "flywheel:internal/fog_distance.glsl"
 #include "flywheel:internal/vertex_input.glsl"
-#include "flywheel:util/diffuse.glsl"
+#include "flywheel:internal/packed_material.glsl"
 
 uniform uvec4 _flw_packedMaterial;
 
 void main() {
-    _flw_materialVertexID = _flw_packedMaterial.x;
-
+    _flw_uberMaterialVertexIndex = _flw_packedMaterial.x;
     _flw_unpackMaterialProperties(_flw_packedMaterial.w, flw_material);
 
-    FlwInstance i = _flw_unpackInstance();
+    FlwInstance instance = _flw_unpackInstance();
 
     _flw_layoutVertex();
     flw_beginVertex();
-    flw_instanceVertex(i);
+    flw_instanceVertex(instance);
     flw_materialVertex();
     flw_endVertex();
 
@@ -30,6 +29,6 @@ void main() {
         flw_vertexColor = vec4(flw_vertexColor.rgb * diffuseFactor, flw_vertexColor.a);
     }
 
-    flw_distance = fog_distance(flw_vertexPos.xyz, flywheel.cameraPos.xyz, flywheel.fogShape);
+    flw_distance = fogDistance(flw_vertexPos.xyz, flywheel.cameraPos.xyz, flywheel.fogShape);
     gl_Position = flywheel.viewProjection * flw_vertexPos;
 }

src/main/resources/assets/flywheel/flywheel/internal/material.glsl

@@ -1,57 +1,33 @@
-#include "flywheel:api/material.glsl"
+const uint FLW_MAT_DEPTH_TEST_OFF = 0u;
+const uint FLW_MAT_DEPTH_TEST_NEVER = 1u;
+const uint FLW_MAT_DEPTH_TEST_LESS = 2u;
+const uint FLW_MAT_DEPTH_TEST_EQUAL = 3u;
+const uint FLW_MAT_DEPTH_TEST_LEQUAL = 4u;
+const uint FLW_MAT_DEPTH_TEST_GREATER = 5u;
+const uint FLW_MAT_DEPTH_TEST_NOTEQUAL = 6u;
+const uint FLW_MAT_DEPTH_TEST_GEQUAL = 7u;
+const uint FLW_MAT_DEPTH_TEST_ALWAYS = 8u;
 
-// The number of bits each property takes up
-const uint _FLW_BLUR_LENGTH = 1u;
-const uint _FLW_MIPMAP_LENGTH = 1u;
-const uint _FLW_BACKFACE_CULLING_LENGTH = 1u;
-const uint _FLW_POLYGON_OFFSET_LENGTH = 1u;
-const uint _FLW_DEPTH_TEST_LENGTH = 4u;
-const uint _FLW_TRANSPARENCY_LENGTH = 3u;
-const uint _FLW_WRITE_MASK_LENGTH = 2u;
-const uint _FLW_USE_OVERLAY_LENGTH = 1u;
-const uint _FLW_USE_LIGHT_LENGTH = 1u;
-const uint _FLW_DIFFUSE_LENGTH = 1u;
+const uint FLW_MAT_TRANSPARENCY_OPAQUE = 0u;
+const uint FLW_MAT_TRANSPARENCY_ADDITIVE = 1u;
+const uint FLW_MAT_TRANSPARENCY_LIGHTNING = 2u;
+const uint FLW_MAT_TRANSPARENCY_GLINT = 3u;
+const uint FLW_MAT_TRANSPARENCY_CRUMBLING = 4u;
+const uint FLW_MAT_TRANSPARENCY_TRANSLUCENT = 5u;
 
-// The bit offset of each property
-const uint _FLW_BLUR_OFFSET = 0u;
-const uint _FLW_MIPMAP_OFFSET = _FLW_BLUR_OFFSET + _FLW_BLUR_LENGTH;
-const uint _FLW_BACKFACE_CULLING_OFFSET = _FLW_MIPMAP_OFFSET + _FLW_MIPMAP_LENGTH;
-const uint _FLW_POLYGON_OFFSET_OFFSET = _FLW_BACKFACE_CULLING_OFFSET + _FLW_BACKFACE_CULLING_LENGTH;
-const uint _FLW_DEPTH_TEST_OFFSET = _FLW_POLYGON_OFFSET_OFFSET + _FLW_POLYGON_OFFSET_LENGTH;
-const uint _FLW_TRANSPARENCY_OFFSET = _FLW_DEPTH_TEST_OFFSET + _FLW_DEPTH_TEST_LENGTH;
-const uint _FLW_WRITE_MASK_OFFSET = _FLW_TRANSPARENCY_OFFSET + _FLW_TRANSPARENCY_LENGTH;
-const uint _FLW_USE_OVERLAY_OFFSET = _FLW_WRITE_MASK_OFFSET + _FLW_WRITE_MASK_LENGTH;
-const uint _FLW_USE_LIGHT_OFFSET = _FLW_USE_OVERLAY_OFFSET + _FLW_USE_OVERLAY_LENGTH;
-const uint _FLW_DIFFUSE_OFFSET = _FLW_USE_LIGHT_OFFSET + _FLW_USE_LIGHT_LENGTH;
+const uint FLW_MAT_WRITE_MASK_COLOR_DEPTH = 0u;
+const uint FLW_MAT_WRITE_MASK_COLOR = 1u;
+const uint FLW_MAT_WRITE_MASK_DEPTH = 2u;
 
-// The bit mask for each property
-const uint _FLW_BLUR_MASK = ((1u << _FLW_BLUR_LENGTH) - 1u) << _FLW_BLUR_OFFSET;
-const uint _FLW_MIPMAP_MASK = ((1u << _FLW_MIPMAP_LENGTH) - 1u) << _FLW_MIPMAP_OFFSET;
-const uint _FLW_BACKFACE_CULLING_MASK = ((1u << _FLW_BACKFACE_CULLING_LENGTH) - 1u) << _FLW_BACKFACE_CULLING_OFFSET;
-const uint _FLW_POLYGON_OFFSET_MASK = ((1u << _FLW_POLYGON_OFFSET_LENGTH) - 1u) << _FLW_POLYGON_OFFSET_OFFSET;
-const uint _FLW_DEPTH_TEST_MASK = ((1u << _FLW_DEPTH_TEST_LENGTH) - 1u) << _FLW_DEPTH_TEST_OFFSET;
-const uint _FLW_TRANSPARENCY_MASK = ((1u << _FLW_TRANSPARENCY_LENGTH) - 1u) << _FLW_TRANSPARENCY_OFFSET;
-const uint _FLW_WRITE_MASK_MASK = ((1u << _FLW_WRITE_MASK_LENGTH) - 1u) << _FLW_WRITE_MASK_OFFSET;
-const uint _FLW_USE_OVERLAY_MASK = ((1u << _FLW_USE_OVERLAY_LENGTH) - 1u) << _FLW_USE_OVERLAY_OFFSET;
-const uint _FLW_USE_LIGHT_MASK = ((1u << _FLW_USE_LIGHT_LENGTH) - 1u) << _FLW_USE_LIGHT_OFFSET;
-const uint _FLW_DIFFUSE_MASK = ((1u << _FLW_DIFFUSE_LENGTH) - 1u) << _FLW_DIFFUSE_OFFSET;
-
-// Packed format:
-// diffuse[1] | useOverlay[1] | useLight[1] | writeMask[2] | transparency[3] | depthTest[4] | polygonOffset[1] | backfaceCulling[1] | mipmap[1] | blur[1]
-void _flw_unpackMaterialProperties(uint p, out FlwMaterial m) {
-    m.blur = (p & _FLW_BLUR_MASK) != 0u;
-    m.mipmap = (p & _FLW_MIPMAP_MASK) != 0u;
-    m.backfaceCulling = (p & _FLW_BACKFACE_CULLING_MASK) != 0u;
-    m.polygonOffset = (p & _FLW_POLYGON_OFFSET_MASK) != 0u;
-    m.depthTest = (p & _FLW_DEPTH_TEST_MASK) >> _FLW_DEPTH_TEST_OFFSET;
-    m.transparency = (p & _FLW_TRANSPARENCY_MASK) >> _FLW_TRANSPARENCY_OFFSET;
-    m.writeMask = (p & _FLW_WRITE_MASK_MASK) >> _FLW_WRITE_MASK_OFFSET;
-    m.useOverlay = (p & _FLW_USE_OVERLAY_MASK) != 0u;
-    m.useLight = (p & _FLW_USE_LIGHT_MASK) != 0u;
-    m.diffuse = (p & _FLW_DIFFUSE_MASK) != 0u;
-}
-
-void _flw_unpackUint2x16(uint s, out uint hi, out uint lo) {
-    hi = (s >> 16) & 0xFFFFu;
-    lo = s & 0xFFFFu;
-}
+struct FlwMaterial {
+    bool blur;
+    bool mipmap;
+    bool backfaceCulling;
+    bool polygonOffset;
+    uint depthTest;
+    uint transparency;
+    uint writeMask;
+    bool useOverlay;
+    bool useLight;
+    bool diffuse;
+};

src/main/resources/assets/flywheel/flywheel/internal/packed_material.glsl

@@ -0,0 +1,55 @@
+// The number of bits each property takes up
+const uint _FLW_BLUR_LENGTH = 1u;
+const uint _FLW_MIPMAP_LENGTH = 1u;
+const uint _FLW_BACKFACE_CULLING_LENGTH = 1u;
+const uint _FLW_POLYGON_OFFSET_LENGTH = 1u;
+const uint _FLW_DEPTH_TEST_LENGTH = 4u;
+const uint _FLW_TRANSPARENCY_LENGTH = 3u;
+const uint _FLW_WRITE_MASK_LENGTH = 2u;
+const uint _FLW_USE_OVERLAY_LENGTH = 1u;
+const uint _FLW_USE_LIGHT_LENGTH = 1u;
+const uint _FLW_DIFFUSE_LENGTH = 1u;
+
+// The bit offset of each property
+const uint _FLW_BLUR_OFFSET = 0u;
+const uint _FLW_MIPMAP_OFFSET = _FLW_BLUR_OFFSET + _FLW_BLUR_LENGTH;
+const uint _FLW_BACKFACE_CULLING_OFFSET = _FLW_MIPMAP_OFFSET + _FLW_MIPMAP_LENGTH;
+const uint _FLW_POLYGON_OFFSET_OFFSET = _FLW_BACKFACE_CULLING_OFFSET + _FLW_BACKFACE_CULLING_LENGTH;
+const uint _FLW_DEPTH_TEST_OFFSET = _FLW_POLYGON_OFFSET_OFFSET + _FLW_POLYGON_OFFSET_LENGTH;
+const uint _FLW_TRANSPARENCY_OFFSET = _FLW_DEPTH_TEST_OFFSET + _FLW_DEPTH_TEST_LENGTH;
+const uint _FLW_WRITE_MASK_OFFSET = _FLW_TRANSPARENCY_OFFSET + _FLW_TRANSPARENCY_LENGTH;
+const uint _FLW_USE_OVERLAY_OFFSET = _FLW_WRITE_MASK_OFFSET + _FLW_WRITE_MASK_LENGTH;
+const uint _FLW_USE_LIGHT_OFFSET = _FLW_USE_OVERLAY_OFFSET + _FLW_USE_OVERLAY_LENGTH;
+const uint _FLW_DIFFUSE_OFFSET = _FLW_USE_LIGHT_OFFSET + _FLW_USE_LIGHT_LENGTH;
+
+// The bit mask for each property
+const uint _FLW_BLUR_MASK = ((1u << _FLW_BLUR_LENGTH) - 1u) << _FLW_BLUR_OFFSET;
+const uint _FLW_MIPMAP_MASK = ((1u << _FLW_MIPMAP_LENGTH) - 1u) << _FLW_MIPMAP_OFFSET;
+const uint _FLW_BACKFACE_CULLING_MASK = ((1u << _FLW_BACKFACE_CULLING_LENGTH) - 1u) << _FLW_BACKFACE_CULLING_OFFSET;
+const uint _FLW_POLYGON_OFFSET_MASK = ((1u << _FLW_POLYGON_OFFSET_LENGTH) - 1u) << _FLW_POLYGON_OFFSET_OFFSET;
+const uint _FLW_DEPTH_TEST_MASK = ((1u << _FLW_DEPTH_TEST_LENGTH) - 1u) << _FLW_DEPTH_TEST_OFFSET;
+const uint _FLW_TRANSPARENCY_MASK = ((1u << _FLW_TRANSPARENCY_LENGTH) - 1u) << _FLW_TRANSPARENCY_OFFSET;
+const uint _FLW_WRITE_MASK_MASK = ((1u << _FLW_WRITE_MASK_LENGTH) - 1u) << _FLW_WRITE_MASK_OFFSET;
+const uint _FLW_USE_OVERLAY_MASK = ((1u << _FLW_USE_OVERLAY_LENGTH) - 1u) << _FLW_USE_OVERLAY_OFFSET;
+const uint _FLW_USE_LIGHT_MASK = ((1u << _FLW_USE_LIGHT_LENGTH) - 1u) << _FLW_USE_LIGHT_OFFSET;
+const uint _FLW_DIFFUSE_MASK = ((1u << _FLW_DIFFUSE_LENGTH) - 1u) << _FLW_DIFFUSE_OFFSET;
+
+// Packed format:
+// diffuse[1] | useOverlay[1] | useLight[1] | writeMask[2] | transparency[3] | depthTest[4] | polygonOffset[1] | backfaceCulling[1] | mipmap[1] | blur[1]
+void _flw_unpackMaterialProperties(uint p, out FlwMaterial m) {
+    m.blur = (p & _FLW_BLUR_MASK) != 0u;
+    m.mipmap = (p & _FLW_MIPMAP_MASK) != 0u;
+    m.backfaceCulling = (p & _FLW_BACKFACE_CULLING_MASK) != 0u;
+    m.polygonOffset = (p & _FLW_POLYGON_OFFSET_MASK) != 0u;
+    m.depthTest = (p & _FLW_DEPTH_TEST_MASK) >> _FLW_DEPTH_TEST_OFFSET;
+    m.transparency = (p & _FLW_TRANSPARENCY_MASK) >> _FLW_TRANSPARENCY_OFFSET;
+    m.writeMask = (p & _FLW_WRITE_MASK_MASK) >> _FLW_WRITE_MASK_OFFSET;
+    m.useOverlay = (p & _FLW_USE_OVERLAY_MASK) != 0u;
+    m.useLight = (p & _FLW_USE_LIGHT_MASK) != 0u;
+    m.diffuse = (p & _FLW_DIFFUSE_MASK) != 0u;
+}
+
+void _flw_unpackUint2x16(uint s, out uint hi, out uint lo) {
+    hi = (s >> 16) & 0xFFFFu;
+    lo = s & 0xFFFFu;
+}

src/main/resources/assets/flywheel/flywheel/internal/vertex_input.glsl

@@ -1,5 +1,3 @@
-#include "flywheel:api/vertex.glsl"
-
 layout(location = 0) in vec3 _flw_pos;
 layout(location = 1) in vec4 _flw_color;
 layout(location = 2) in vec2 _flw_texCoord;

src/main/resources/assets/flywheel/flywheel/material/default.frag

@@ -1,4 +1,2 @@
-#include "flywheel:api/fragment.glsl"
-
 void flw_materialFragment() {
 }

src/main/resources/assets/flywheel/flywheel/material/default.vert

@@ -1,4 +1,2 @@
-#include "flywheel:api/vertex.glsl"
-
 void flw_materialVertex() {
 }

src/main/resources/assets/flywheel/flywheel/uniform/flywheel.glsl

@@ -1,4 +1,4 @@
-struct FLWPackedPlanes {
+struct FrustumPlanes {
     vec4 xyX; // <nx.x, px.x, ny.x, py.x>
     vec4 xyY; // <nx.y, px.y, ny.y, py.y>
     vec4 xyZ; // <nx.z, px.z, ny.z, py.z>
@@ -9,12 +9,12 @@ struct FLWPackedPlanes {
     vec2 zW; // <nz.w, pz.w>
 };
 
-struct flywheel_uniforms {
+struct FlywheelUniforms {
     vec4 fogColor;
     vec2 fogRange;
     int fogShape;
     mat4 viewProjection;
     vec4 cameraPos;
     int constantAmbientLight;
-    FLWPackedPlanes planes;
+    FrustumPlanes planes;
 };

src/main/resources/assets/flywheel/flywheel/util/fog.glsl

@@ -1,40 +0,0 @@
-float spherical_distance(vec3 relativePos) {
-    return length(relativePos);
-}
-
-float cylindrical_distance(vec3 relativePos) {
-    float distXZ = length(relativePos.xz);
-    float distY = abs(relativePos.y);
-    return max(distXZ, distY);
-}
-
-float fog_distance(vec3 relativePos, int fogShape) {
-    if (fogShape == 0) {
-        return spherical_distance(relativePos);
-    } else {
-        return cylindrical_distance(relativePos);
-    }
-}
-
-float fog_distance(vec3 worldPos, vec3 cameraPos, int fogShape) {
-    return fog_distance(worldPos - cameraPos, fogShape);
-}
-
-vec4 linear_fog(vec4 color, float distance, float fogStart, float fogEnd, vec4 fogColor) {
-    if (distance <= fogStart) {
-        return color;
-    }
-
-    float fogValue = distance < fogEnd ? smoothstep(fogStart, fogEnd, distance) : 1.0;
-    return vec4(mix(color.rgb, fogColor.rgb, fogValue * fogColor.a), color.a);
-}
-
-vec4 linear_fog_fade(vec4 color, float distance, float fogStart, float fogEnd) {
-    if (distance <= fogStart) {
-        return color;
-    } else if (distance >= fogEnd) {
-        return vec4(0.0);
-    }
-
-    return color * smoothstep(fogEnd, fogStart, distance);
-}

src/main/resources/assets/flywheel/flywheel/util/quaternion.glsl

@@ -1,8 +1,8 @@
-#define PIOVER2 1.5707963268
+#define PI_OVER_2 1.5707963268
 
 vec4 quat(vec3 axis, float angle) {
-    float halfAngle = angle * PIOVER2 / 180.0;
-    vec2 cs = sin(vec2(PIOVER2 - halfAngle, halfAngle)); // compute sin and cos in one instruction
+    float halfAngle = angle * PI_OVER_2 / 180.0;
+    vec2 cs = sin(vec2(PI_OVER_2 - halfAngle, halfAngle)); // compute sin and cos in one instruction
     return vec4(axis.xyz * cs.y,  cs.x);
 }