Fix BufferBuilderReader endianness

- Set split ByteBuffer's order to that of the BufferBuilder's ByteBuffer
in BufferBuilderReader
- Move Fabric-only mixins from mixin.fabric to fabric.mixin and create
separate mixin config

src/main/java/com/jozufozu/flywheel/fabric/helper/BufferBuilderHelper.java

@@ -1,10 +1,16 @@
 package com.jozufozu.flywheel.fabric.helper;
 
-import com.jozufozu.flywheel.mixin.fabric.BufferBuilderAccessor;
+import java.nio.ByteBuffer;
+
+import com.jozufozu.flywheel.fabric.mixin.BufferBuilderAccessor;
 import com.mojang.blaze3d.vertex.BufferBuilder;
 import com.mojang.blaze3d.vertex.VertexFormat;
 
 public final class BufferBuilderHelper {
+	public static void fixByteOrder(BufferBuilder self, ByteBuffer buffer) {
+		buffer.order(((BufferBuilderAccessor) self).getBuffer().order());
+	}
+
 	public static VertexFormat getVertexFormat(BufferBuilder self) {
 		return ((BufferBuilderAccessor) self).getFormat();
 	}

src/main/java/com/jozufozu/flywheel/fabric/helper/VertexFormatHelper.java

@@ -1,6 +1,6 @@
 package com.jozufozu.flywheel.fabric.helper;
 
-import com.jozufozu.flywheel.mixin.fabric.VertexFormatAccessor;
+import com.jozufozu.flywheel.fabric.mixin.VertexFormatAccessor;
 import com.mojang.blaze3d.vertex.VertexFormat;
 
 public final class VertexFormatHelper {

src/main/java/com/jozufozu/flywheel/fabric/mixin/BufferBuilderAccessor.java

@@ -1,4 +1,6 @@
-package com.jozufozu.flywheel.mixin.fabric;
+package com.jozufozu.flywheel.fabric.mixin;
+
+import java.nio.ByteBuffer;
 
 import org.spongepowered.asm.mixin.Mixin;
 import org.spongepowered.asm.mixin.gen.Accessor;
@@ -8,6 +10,9 @@ import com.mojang.blaze3d.vertex.VertexFormat;
 
 @Mixin(BufferBuilder.class)
 public interface BufferBuilderAccessor {
+	@Accessor("buffer")
+	ByteBuffer getBuffer();
+
 	@Accessor("format")
 	VertexFormat getFormat();
 }

src/main/java/com/jozufozu/flywheel/fabric/mixin/DebugScreenOverlayMixin.java

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

src/main/java/com/jozufozu/flywheel/fabric/mixin/Matrix4fMixin.java

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

src/main/java/com/jozufozu/flywheel/fabric/mixin/MinecraftMixin.java

@@ -1,4 +1,4 @@
-package com.jozufozu.flywheel.mixin.fabric;
+package com.jozufozu.flywheel.fabric.mixin;
 
 import org.objectweb.asm.Opcodes;
 import org.spongepowered.asm.mixin.Mixin;

src/main/java/com/jozufozu/flywheel/fabric/mixin/TextureAtlasMixin.java

@@ -1,4 +1,4 @@
-package com.jozufozu.flywheel.mixin.fabric;
+package com.jozufozu.flywheel.fabric.mixin;
 
 import org.spongepowered.asm.mixin.Mixin;
 import org.spongepowered.asm.mixin.injection.At;

src/main/java/com/jozufozu/flywheel/fabric/mixin/VertexFormatAccessor.java

@@ -1,4 +1,4 @@
-package com.jozufozu.flywheel.mixin.fabric;
+package com.jozufozu.flywheel.fabric.mixin;
 
 import org.spongepowered.asm.mixin.Mixin;
 import org.spongepowered.asm.mixin.gen.Accessor;

src/main/java/com/jozufozu/flywheel/util/BufferBuilderReader.java

@@ -18,6 +18,7 @@ public class BufferBuilderReader {
 		VertexFormat vertexFormat = BufferBuilderHelper.getVertexFormat(builder);
 		Pair<BufferBuilder.DrawState, ByteBuffer> data = builder.popNextBuffer();
 		buffer = data.getSecond();
+		BufferBuilderHelper.fixByteOrder(builder, buffer);
 
 		formatSize = vertexFormat.getVertexSize();
 

src/main/resources/fabric.mod.json

@@ -25,7 +25,8 @@
     ]
   },
   "mixins": [
-    "flywheel.mixins.json"
+    "flywheel.mixins.json",
+    "flywheel.fabric.mixins.json"
   ],
 
   "depends": {

src/main/resources/flywheel.fabric.mixins.json

@@ -0,0 +1,17 @@
+{
+  "required": true,
+  "minVersion": "0.8",
+  "package": "com.jozufozu.flywheel.fabric.mixin",
+  "compatibilityLevel": "JAVA_17",
+  "client": [
+    "BufferBuilderAccessor",
+    "DebugScreenOverlayMixin",
+    "Matrix4fMixin",
+    "MinecraftMixin",
+    "TextureAtlasMixin",
+    "VertexFormatAccessor"
+  ],
+  "injectors": {
+    "defaultRequire": 1
+  }
+}

src/main/resources/flywheel.mixins.json

@@ -21,13 +21,6 @@
         "matrix.Matrix3fMixin",
         "matrix.Matrix4fMixin",
         "matrix.PoseStackMixin"
-        ,
-        "fabric.BufferBuilderAccessor",
-        "fabric.DebugScreenOverlayMixin",
-        "fabric.Matrix4fMixin",
-        "fabric.MinecraftMixin",
-        "fabric.TextureAtlasMixin",
-        "fabric.VertexFormatAccessor"
     ],
     "injectors": {
         "defaultRequire": 1