It can actually load and link something

- Lots of refactoring in the shader loading code.
 - Abstract all the different shader source transformations into ProcessingStage.
 - An ordered list of ProcessingStages is called a ShaderTransformer.
 - When you acquire sources, a Shader now keeps track of the source location, shader type, and source code all together.

src/main/java/com/jozufozu/flywheel/backend/ShaderContext.java

@@ -7,7 +7,8 @@ import com.jozufozu.flywheel.backend.gl.shader.GlProgram;
 import com.jozufozu.flywheel.backend.gl.shader.IMultiProgram;
 import com.jozufozu.flywheel.backend.gl.shader.ProgramSpec;
 import com.jozufozu.flywheel.backend.gl.shader.ShaderSpecLoader;
-import com.jozufozu.flywheel.backend.gl.shader.ShaderType;
+import com.jozufozu.flywheel.backend.loading.ProcessingStage;
+import com.jozufozu.flywheel.backend.loading.Shader;
 
 import net.minecraft.util.ResourceLocation;
 
@@ -32,8 +33,11 @@ public abstract class ShaderContext<P extends GlProgram> {
 		Backend.log.debug("Loaded program {}", programSpec.name);
 	}
 
-	public String preProcess(ShaderLoader loader, ShaderType type, ResourceLocation shader, String shaderSrc) {
-		return shaderSrc;
+	public void preProcess(ShaderLoader loader, Shader shader) {
+	}
+
+	public ProcessingStage loadingStage(ShaderLoader loader) {
+		return shader -> this.preProcess(loader, shader);
 	}
 
 	public P getProgram(ProgramSpec spec) {

src/main/java/com/jozufozu/flywheel/backend/ShaderLoader.java

@@ -14,6 +14,7 @@ import java.util.ArrayList;
 import java.util.Collection;
 import java.util.HashMap;
 import java.util.HashSet;
+import java.util.List;
 import java.util.Map;
 import java.util.Set;
 import java.util.function.Predicate;
@@ -25,12 +26,12 @@ import java.util.stream.Stream;
 import org.lwjgl.system.MemoryUtil;
 
 import com.google.common.collect.Lists;
-import com.jozufozu.flywheel.backend.gl.attrib.IVertexAttrib;
+import com.jozufozu.flywheel.backend.gl.GlObject;
 import com.jozufozu.flywheel.backend.gl.shader.GlProgram;
 import com.jozufozu.flywheel.backend.gl.shader.GlShader;
-import com.jozufozu.flywheel.backend.gl.shader.ProgramSpec;
-import com.jozufozu.flywheel.backend.gl.shader.ShaderConstants;
 import com.jozufozu.flywheel.backend.gl.shader.ShaderType;
+import com.jozufozu.flywheel.backend.loading.Shader;
+import com.jozufozu.flywheel.backend.loading.ShaderTransformer;
 import com.mojang.blaze3d.systems.RenderSystem;
 
 import net.minecraft.resources.IResource;
@@ -58,15 +59,24 @@ public class ShaderLoader {
 				shaderSource.clear();
 				loadShaderSources(manager);
 
-//				ResourceLocation test = new ResourceLocation("create", "model_new.vert");
-//				ResourceLocation vert = new ResourceLocation("create", "skeleton/instanced/instanced.vert");
+//				InstancedArraysTemplate template = new InstancedArraysTemplate(this);
 //
-//				InstancedArraysShaderTemplate template = new InstancedArraysShaderTemplate(getShaderSource(vert));
-//				ParsedShader parsedShader = new ParsedShader(getShaderSource(test));
+//				ResourceLocation name = new ResourceLocation("create", "test");
+//				ResourceLocation vert = new ResourceLocation("create", "model_new.vert");
+//				ResourceLocation frag = new ResourceLocation("create", "block_new.frag");
 //
-//				String apply = template.apply(parsedShader);
+//				ShaderTransformer transformer = new ShaderTransformer()
+//						.pushStage(WorldContext.INSTANCE.loadingStage(this))
+//						.pushStage(this::processIncludes)
+//						.pushStage(template)
+//						.pushStage(this::processIncludes);
 //
-//				printSource(test, apply);
+//				Shader vertexFile = this.source(vert, ShaderType.VERTEX);
+//				Shader fragmentFile = this.source(frag, ShaderType.FRAGMENT);
+//
+//				GlProgram.Builder builder = loadProgram(name, transformer, vertexFile, fragmentFile);
+//
+//				BasicProgram program = new BasicProgram(builder, GlFogMode.NONE.getFogFactory());
 
 				for (ShaderContext<?> context : Backend.contexts.values()) {
 					context.load(this);
@@ -108,48 +118,41 @@ public class ShaderLoader {
 		}
 	}
 
-	public GlProgram.Builder loadProgram(ShaderContext<?> ctx, ProgramSpec programSpec) {
-		return loadProgram(ctx, programSpec, programSpec.defines);
+	public Shader source(ResourceLocation name, ShaderType type) {
+		return new Shader(type, name, getShaderSource(name));
 	}
 
-	public GlProgram.Builder loadProgram(ShaderContext<?> ctx, ProgramSpec programSpec, ShaderConstants defines) {
-		return loadProgram(ctx, programSpec.name, programSpec.vert, programSpec.frag, programSpec.attributes, defines);
+	public GlProgram.Builder loadProgram(ResourceLocation name, ShaderTransformer transformer, Shader... shaders) {
+		return loadProgram(name, transformer, Lists.newArrayList(shaders));
 	}
 
-	public GlProgram.Builder loadProgram(ShaderContext<?> ctx, ResourceLocation name, ResourceLocation vert, ResourceLocation frag, Collection<IVertexAttrib> attribs, ShaderConstants defines) {
-		GlShader vsh = null;
-		GlShader fsh = null;
+	/**
+	 * Ingests the given shaders, compiling them and linking them together after applying the transformer to the source.
+	 *
+	 * @param name        What should we call this program if something goes wrong?
+	 * @param transformer What should we do to the sources before compilation?
+	 * @param shaders     What are the different shader stages that should be linked together?
+	 * @return A linked program builder.
+	 */
+	public GlProgram.Builder loadProgram(ResourceLocation name, ShaderTransformer transformer, Collection<Shader> shaders) {
+		List<GlShader> compiled = new ArrayList<>(shaders.size());
 		try {
-			vsh = loadShader(ctx, vert, ShaderType.VERTEX, defines);
-			fsh = loadShader(ctx, frag, ShaderType.FRAGMENT, defines);
+			GlProgram.Builder builder = GlProgram.builder(name);
 
-			return GlProgram.builder(name)
-					.attachShader(vsh)
-					.attachShader(fsh)
-					.addAttributes(attribs)
-					.link();
+			for (Shader shader : shaders) {
+				transformer.transformSource(shader);
+				GlShader sh = new GlShader(shader);
+				compiled.add(sh);
+
+				builder.attachShader(sh);
+			}
+
+			return builder.link();
 		} finally {
-			if (vsh != null) vsh.delete();
-			if (fsh != null) fsh.delete();
+			compiled.forEach(GlObject::delete);
 		}
 	}
 
-	public GlShader loadShader(ShaderContext<?> ctx, ResourceLocation name, ShaderType type, ShaderConstants defines) {
-		String source = shaderSource.get(name);
-
-		source = ctx.preProcess(this, type, name, source);
-		source = processIncludes(source, name);
-
-		if (defines != null)
-			source = defines.process(source);
-
-		if (debugDumpFile) {
-			printSource(name, source);
-		}
-
-		return new GlShader(type, name, source);
-	}
-
 	private void printSource(ResourceLocation name, String source) {
 		Backend.log.debug("Finished processing '" + name + "':");
 		int i = 1;
@@ -158,11 +161,12 @@ public class ShaderLoader {
 		}
 	}
 
-	private String processIncludes(String source, ResourceLocation baseName) {
+	public void processIncludes(Shader shader) {
 		HashSet<ResourceLocation> seen = new HashSet<>();
-		seen.add(baseName);
+		seen.add(shader.name);
 
-		return includeRecursive(source, seen).collect(Collectors.joining("\n"));
+		String includesInjected = includeRecursive(shader.getSource(), seen).collect(Collectors.joining("\n"));
+		shader.setSource(includesInjected);
 	}
 
 	private Stream<String> includeRecursive(String source, Set<ResourceLocation> seen) {

src/main/java/com/jozufozu/flywheel/backend/core/BasicProgram.java

@@ -22,6 +22,10 @@ public class BasicProgram extends GlProgram {
 	protected int uBlockAtlas;
 	protected int uLightMap;
 
+	public BasicProgram(GlProgram.Builder builder, ProgramFogMode.Factory fogFactory) {
+		this(builder.name, builder.program, fogFactory);
+	}
+
 	public BasicProgram(ResourceLocation name, int handle, ProgramFogMode.Factory fogFactory) {
 		super(name, handle);
 		uTime = getUniformLocation("uTime");

src/main/java/com/jozufozu/flywheel/backend/core/WorldContext.java

@@ -14,6 +14,7 @@ import com.jozufozu.flywheel.backend.gl.shader.IMultiProgram;
 import com.jozufozu.flywheel.backend.gl.shader.ShaderSpecLoader;
 import com.jozufozu.flywheel.backend.gl.shader.ShaderType;
 import com.jozufozu.flywheel.backend.instancing.MaterialSpec;
+import com.jozufozu.flywheel.backend.loading.Shader;
 
 import net.minecraft.util.ResourceLocation;
 
@@ -50,15 +51,15 @@ public class WorldContext<P extends BasicProgram> extends ShaderContext<P> {
 	}
 
 	@Override
-	public String preProcess(ShaderLoader loader, ShaderType type, ResourceLocation shader, String shaderSrc) {
-		String builtinSrc = loader.getShaderSource(builtins.get(type));
+	public void preProcess(ShaderLoader loader, Shader shader) {
+		String builtinSrc = loader.getShaderSource(builtins.get(shader.type));
 
-		Matcher matcher = builtinPattern.matcher(shaderSrc);
+		Matcher matcher = builtinPattern.matcher(shader.getSource());
 
 		if (matcher.find())
-			return matcher.replaceFirst(builtinSrc);
-
-		throw new RuntimeException(String.format("%s shader '%s' is missing %s, cannot use in World Context", type.name, shader, declaration));
+			shader.setSource(matcher.replaceFirst(builtinSrc));
+		else
+			throw new RuntimeException(String.format("%s shader '%s' is missing %s, cannot use in World Context", shader.type.name, shader.name, declaration));
 	}
 
 	@Override

src/main/java/com/jozufozu/flywheel/backend/gl/shader/FogSensitiveProgram.java

@@ -45,7 +45,7 @@ public class FogSensitiveProgram<P extends GlProgram> implements IMultiProgram<P
 
 				defines.defineAll(fogMode.getDefines());
 
-				GlProgram.Builder builder = loader.loadProgram(ctx, spec, defines);
+				GlProgram.Builder builder = spec.loadProgram(ctx, defines, loader);
 
 				programs.put(fogMode, fogProgramLoader.create(builder.name, builder.program, fogMode.getFogFactory()));
 			}

src/main/java/com/jozufozu/flywheel/backend/gl/shader/GlShader.java

@@ -5,6 +5,7 @@ import org.lwjgl.opengl.GL20;
 import com.jozufozu.flywheel.backend.Backend;
 import com.jozufozu.flywheel.backend.gl.GlObject;
 import com.jozufozu.flywheel.backend.gl.versioned.GlCompat;
+import com.jozufozu.flywheel.backend.loading.Shader;
 
 import net.minecraft.util.ResourceLocation;
 
@@ -13,6 +14,10 @@ public class GlShader extends GlObject {
 	public final ResourceLocation name;
 	public final ShaderType type;
 
+	public GlShader(Shader shader) {
+		this(shader.type, shader.name, shader.getSource());
+	}
+
 	public GlShader(ShaderType type, ResourceLocation name, String source) {
 		this.type = type;
 		this.name = name;
@@ -38,13 +43,4 @@ public class GlShader extends GlObject {
 	protected void deleteInternal(int handle) {
 		GL20.glDeleteShader(handle);
 	}
-
-	@FunctionalInterface
-	public interface PreProcessor {
-		String process(String source);
-
-		default PreProcessor andThen(PreProcessor that) {
-			return source -> that.process(this.process(source));
-		}
-	}
 }

src/main/java/com/jozufozu/flywheel/backend/gl/shader/ProgramSpec.java

@@ -3,7 +3,12 @@ package com.jozufozu.flywheel.backend.gl.shader;
 import java.util.ArrayList;
 import java.util.Arrays;
 
+import com.jozufozu.flywheel.backend.ShaderContext;
+import com.jozufozu.flywheel.backend.ShaderLoader;
 import com.jozufozu.flywheel.backend.gl.attrib.IVertexAttrib;
+import com.jozufozu.flywheel.backend.loading.InstancedArraysTemplate;
+import com.jozufozu.flywheel.backend.loading.Shader;
+import com.jozufozu.flywheel.backend.loading.ShaderTransformer;
 
 import net.minecraft.util.ResourceLocation;
 
@@ -30,6 +35,24 @@ public class ProgramSpec {
 		this.attributes = attributes;
 	}
 
+	public GlProgram.Builder loadProgram(ShaderContext<?> ctx, ShaderConstants defines, ShaderLoader loader) {
+		InstancedArraysTemplate template = new InstancedArraysTemplate(loader);
+
+		ShaderTransformer transformer = new ShaderTransformer()
+				.pushStage(ctx.loadingStage(loader))
+//				.pushStage(loader::processIncludes)
+//				.pushStage(template)
+				.pushStage(loader::processIncludes);
+
+		if (defines != null)
+			transformer.pushStage(defines);
+
+		Shader vertexFile = loader.source(vert, ShaderType.VERTEX);
+		Shader fragmentFile = loader.source(frag, ShaderType.FRAGMENT);
+		return loader.loadProgram(name, transformer, vertexFile, fragmentFile)
+				.addAttributes(attributes);
+	}
+
 	public static class Builder {
 		private ResourceLocation vert;
 		private ResourceLocation frag;

src/main/java/com/jozufozu/flywheel/backend/gl/shader/ShaderConstants.java

@@ -8,8 +8,10 @@ import java.util.stream.Collectors;
 import java.util.stream.Stream;
 
 import com.google.common.collect.Lists;
+import com.jozufozu.flywheel.backend.loading.ProcessingStage;
+import com.jozufozu.flywheel.backend.loading.Shader;
 
-public class ShaderConstants implements GlShader.PreProcessor {
+public class ShaderConstants implements ProcessingStage {
 	public static final ShaderConstants EMPTY = new ShaderConstants();
 
 	private final ArrayList<String> defines;
@@ -45,8 +47,8 @@ public class ShaderConstants implements GlShader.PreProcessor {
 	}
 
 	@Override
-	public String process(String source) {
-		return new BufferedReader(new StringReader(source)).lines().flatMap(line -> {
+	public void process(Shader shader) {
+		shader.setSource(new BufferedReader(new StringReader(shader.getSource())).lines().flatMap(line -> {
 			Stream<String> map = Stream.of(line);
 
 			if (line.startsWith("#version")) {
@@ -54,6 +56,6 @@ public class ShaderConstants implements GlShader.PreProcessor {
 			}
 
 			return map;
-		}).collect(Collectors.joining("\n"));
+		}).collect(Collectors.joining("\n")));
 	}
 }

src/main/java/com/jozufozu/flywheel/backend/gl/shader/SingleProgram.java

@@ -31,7 +31,7 @@ public class SingleProgram<P extends GlProgram> implements IMultiProgram<P> {
 
 		@Override
 		public IMultiProgram<P> create(ShaderLoader loader, ShaderContext<P> ctx, ProgramSpec spec) {
-			GlProgram.Builder builder = loader.loadProgram(ctx, spec);
+			GlProgram.Builder builder = spec.loadProgram(ctx, spec.defines, loader);
 
 			return new SingleProgram<>(factory.create(builder.name, builder.program));
 		}

src/main/java/com/jozufozu/flywheel/backend/loading/InstancedArraysTemplate.java

@@ -0,0 +1,21 @@
+package com.jozufozu.flywheel.backend.loading;
+
+import com.jozufozu.flywheel.backend.ShaderLoader;
+import com.jozufozu.flywheel.backend.gl.shader.ShaderType;
+
+import net.minecraft.util.ResourceLocation;
+
+public class InstancedArraysTemplate extends ProgramTemplate {
+	public static final String[] requiredVert = {"FLWInstanceData", "FLWVertexData", "FLWFragment"};
+	public static final String[] requiredFrag = {"FLWFragment"};
+
+	public static final ResourceLocation vert = new ResourceLocation("create", "template/instanced/instanced.vert");
+	public static final ResourceLocation frag = new ResourceLocation("create", "template/instanced/instanced.frag");
+
+	public InstancedArraysTemplate(ShaderLoader loader) {
+		super(loader);
+
+		templates.put(ShaderType.VERTEX, new ShaderTemplate(requiredVert, loader.getShaderSource(vert)));
+		templates.put(ShaderType.FRAGMENT, new ShaderTemplate(requiredFrag, loader.getShaderSource(frag)));
+	}
+}

src/main/java/com/jozufozu/flywheel/backend/loading/ParsedShader.java

@@ -5,17 +5,20 @@ import java.util.Map;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 
+import net.minecraft.util.ResourceLocation;
+
 public class ParsedShader {
 	private static final Pattern decorator = Pattern.compile("#\\[([\\w_]*)]");
 	private static final Pattern taggedStruct = Pattern.compile("#\\[([\\w_]*)]\\s*struct\\s+([\\w\\d_]*)\\s*\\{(\\s*(?:.*;\\s*\\n)+\\s*)}\\s*;");
 
+	final ResourceLocation loc;
 	final String src;
 
 	final Map<String, TaggedStruct> tag2Struct = new HashMap<>();
 	final Map<String, TaggedStruct> name2Struct = new HashMap<>();
 
-	public ParsedShader(String src) {
-
+	public ParsedShader(ResourceLocation loc, String src) {
+		this.loc = loc;
 		Matcher structs = taggedStruct.matcher(src);
 
 		StringBuffer strippedSrc = new StringBuffer();

src/main/java/com/jozufozu/flywheel/backend/loading/ProcessingStage.java

@@ -0,0 +1,7 @@
+package com.jozufozu.flywheel.backend.loading;
+
+@FunctionalInterface
+public interface ProcessingStage {
+
+	void process(Shader shader);
+}

src/main/java/com/jozufozu/flywheel/backend/loading/ProgramTemplate.java

@@ -0,0 +1,28 @@
+package com.jozufozu.flywheel.backend.loading;
+
+import java.util.EnumMap;
+import java.util.Map;
+
+import com.jozufozu.flywheel.backend.ShaderLoader;
+import com.jozufozu.flywheel.backend.gl.shader.ShaderType;
+
+public class ProgramTemplate implements ProcessingStage {
+
+	protected final ShaderLoader loader;
+	protected Map<ShaderType, ShaderTemplate> templates = new EnumMap<>(ShaderType.class);
+
+	public ProgramTemplate(ShaderLoader loader) {
+		this.loader = loader;
+	}
+
+	@Override
+	public void process(Shader shader) {
+		ShaderTemplate template = templates.get(shader.type);
+
+		if (template == null) return;
+
+		ParsedShader parsedShader = new ParsedShader(shader.name, shader.getSource());
+
+		shader.setSource(template.apply(parsedShader));
+	}
+}

src/main/java/com/jozufozu/flywheel/backend/loading/Shader.java

@@ -0,0 +1,33 @@
+package com.jozufozu.flywheel.backend.loading;
+
+import com.jozufozu.flywheel.backend.gl.shader.ShaderType;
+
+import net.minecraft.util.ResourceLocation;
+
+public class Shader {
+	public ShaderType type;
+	public ResourceLocation name;
+	private String source;
+
+	public Shader(ShaderType type, ResourceLocation name, String source) {
+		this.type = type;
+		this.name = name;
+		this.setSource(source);
+	}
+
+	public static Shader vert(ResourceLocation fileLoc, String source) {
+		return new Shader(ShaderType.VERTEX, fileLoc, source);
+	}
+
+	public static Shader frag(ResourceLocation fileLoc, String source) {
+		return new Shader(ShaderType.FRAGMENT, fileLoc, source);
+	}
+
+	public String getSource() {
+		return source;
+	}
+
+	public void setSource(String source) {
+		this.source = source;
+	}
+}

src/main/java/com/jozufozu/flywheel/backend/loading/ShaderTemplate.java

@@ -1,22 +1,26 @@
 package com.jozufozu.flywheel.backend.loading;
 
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 
-public class InstancedArraysShaderTemplate {
+public class ShaderTemplate {
 
 	private static final String delimiter = "#flwbeginbody";
 	private static final Pattern headerFinder = Pattern.compile(delimiter);
 
-	private static final Pattern prefixer = Pattern.compile("#FLWPrefixFields\\((\\S+),\\s*([^\\n]+)\\)");
+	private static final Pattern prefixer = Pattern.compile("#FLWPrefixFields\\((\\w+),\\s*(\\w+),\\s*([\\w\\d]+)\\)");
 	private static final Pattern assigner = Pattern.compile("#FLWAssignFields\\(([\\w\\d_]+),\\s*([\\w\\d_.]+),\\s*([\\w\\d_.]+)\\)");
 
-	public static final String[] required = {"FLWInstanceData", "FLWVertexData", "FLWFragment"};
+	final String[] requiredStructs;
 
 	final String header;
 	final String body;
 
-	public InstancedArraysShaderTemplate(String templateSrc) {
+	public ShaderTemplate(String[] requiredStructs, String templateSrc) {
+		this.requiredStructs = requiredStructs;
 		Matcher matcher = headerFinder.matcher(templateSrc);
 
 		if (!matcher.find()) {
@@ -38,10 +42,21 @@ public class InstancedArraysShaderTemplate {
 	public String processBody(ParsedShader shader) {
 		String s = body;
 
-		for (String name : required) {
+		List<String> missing = new ArrayList<>();
+
+		for (String name : requiredStructs) {
 			TaggedStruct struct = shader.getTag(name);
 
+			if (struct != null) {
 				s = s.replace(name, struct.name);
+			} else {
+				missing.add(name);
+			}
+		}
+
+		if (!missing.isEmpty()) {
+			String err = shader.loc + " is missing: " + String.join(", ", missing);
+			throw new RuntimeException(err);
 		}
 
 		s = fillPrefixes(shader, s);
@@ -56,14 +71,19 @@ public class InstancedArraysShaderTemplate {
 		StringBuffer out = new StringBuffer();
 		while (prefixMatches.find()) {
 			String structName = prefixMatches.group(1);
-			String prefix = prefixMatches.group(2);
+			String modifier = prefixMatches.group(2);
+			String prefix = prefixMatches.group(3);
 
 			TaggedStruct struct = shader.getStruct(structName);
 
 			StringBuilder builder = new StringBuilder();
-			for (String field : struct.fields.keySet()) {
+			for (Map.Entry<String, String> field : struct.fields.entrySet()) {
+				builder.append(modifier);
+				builder.append(' ');
+				builder.append(field.getValue());
+				builder.append(' ');
 				builder.append(prefix);
-				builder.append(field);
+				builder.append(field.getKey());
 				builder.append(";\n");
 			}
 

src/main/java/com/jozufozu/flywheel/backend/loading/ShaderTransformer.java

@@ -0,0 +1,33 @@
+package com.jozufozu.flywheel.backend.loading;
+
+import java.util.LinkedList;
+
+public class ShaderTransformer {
+
+	private final LinkedList<ProcessingStage> stages = new LinkedList<>();
+
+	public ShaderTransformer() {
+	}
+
+	public ShaderTransformer pushStage(ProcessingStage stage) {
+		if (stage != null) {
+			stages.addLast(stage);
+		}
+		return this;
+	}
+
+	public ShaderTransformer prependStage(ProcessingStage stage) {
+		if (stage != null) {
+			stages.addFirst(stage);
+		}
+		return this;
+	}
+
+	public void transformSource(Shader shader) {
+
+		for (ProcessingStage stage : this.stages) {
+			stage.process(shader);
+		}
+	}
+
+}

src/main/resources/assets/create/flywheel/shaders/block_new.frag

@@ -1,5 +1,3 @@
-#version 110
-
 #flwbuiltins
 
 #[FLWFragment]

src/main/resources/assets/create/flywheel/shaders/model_new.vert

@@ -29,12 +29,11 @@ Raster FLWMain(Vertex v, Instance i) {
     vec4 worldPos = i.transform * vec4(v.pos, 1.);
 
     vec3 norm = i.normalMat * v.normal;
+    norm = normalize(norm);
 
     FLWFinalizeWorldPos(worldPos);
     FLWFinalizeNormal(norm);
 
-    norm = normalize(norm);
-
     Raster r;
     r.diffuse = diffuse(norm);
     r.texCoords = v.texCoords;

src/main/resources/assets/create/flywheel/shaders/skeleton/instanced/instanced.frag

@@ -1,12 +0,0 @@
-#version 110
-
-#flwbeginbody
-
-#FLWPrefixFields(FLWFragment, varying __v2f_)
-
-void main() {
-    FLWFragment f;
-    #FLWAssignFields(FLWFragment, f., __v2f_)
-
-    FLWMain(f);
-}

src/main/resources/assets/create/flywheel/shaders/skeleton/instanced/instanced.vert

@@ -1,19 +0,0 @@
-#version 110
-
-#flwbeginbody
-#FLWPrefixFields(FLWVertexData, attribute __a_)
-#FLWPrefixFields(FLWInstanceData, attribute __a_)
-
-#FLWPrefixFields(FLWFragment, varying __v2f_)
-
-void main() {
-    FLWVertexData v;
-    #FLWAssignFields(FLWVertexData, v., __a_)
-
-    FLWInstanceData i;
-    #FLWAssignFields(FLWInstanceData, i., __a_)
-
-    FLWFragment o = FLWMain(v, i);
-
-    #FLWAssignFields(FLWFragment, __v2f_, o.)
-}

src/main/resources/assets/create/flywheel/shaders/template/instanced/instanced.frag

@@ -0,0 +1,12 @@
+#version 110
+
+#flwbeginbody
+
+#FLWPrefixFields(FLWFragment, varying, v2f_)
+
+void main() {
+    FLWFragment f;
+    #FLWAssignFields(FLWFragment, f., v2f_)
+
+    FLWMain(f);
+}

src/main/resources/assets/create/flywheel/shaders/template/instanced/instanced.vert

@@ -0,0 +1,19 @@
+#version 110
+
+#flwbeginbody
+#FLWPrefixFields(FLWVertexData, attribute, a_v_)
+#FLWPrefixFields(FLWInstanceData, attribute, a_i_)
+
+#FLWPrefixFields(FLWFragment, varying, v2f_)
+
+void main() {
+    FLWVertexData v;
+    #FLWAssignFields(FLWVertexData, v., a_v_)
+
+    FLWInstanceData i;
+    #FLWAssignFields(FLWInstanceData, i., a_i_)
+
+    FLWFragment o = FLWMain(v, i);
+
+    #FLWAssignFields(FLWFragment, v2f_, o.)
+}