Add mega hack to disable CCRS lighting, for Multipart quad baking.

In Multipart we need to build baked quads without lighting, via the existing code paths which usually would emit lighting data. Its common for part implemented code to call `ccrs.reset()` prior to doing any rendering. This resets any attempt at disabling lighting. This hack is the easiest way to prevent these. This auto-baking is going away next mc version anyway.

Author: covers1624

src/main/java/codechicken/lib/render/CCRenderState.java

@@ -80,6 +80,12 @@ public class CCRenderState {
      */
     public LightMatrix lightMatrix = new LightMatrix();
 
+    // TODO, REALLY SERIOUSLY NUKE THIS.
+    // This was added as a workaround for Multipart to actually seriously disable the lighting engine,
+    // when building BakedQuads for parts which don't do it themselves.
+    @Deprecated (forRemoval = true)
+    public boolean hackyReallyDontComputeLighting;
+
     //vertex outputs
     public final Vertex5 vert = new Vertex5();
     public final Vector3 normal = new Vector3();
@@ -161,7 +167,7 @@ public void bind(RenderType renderType, MultiBufferSource getter, Matrix4 mat) {
     public void reset() {
         model = null;
         pipeline.reset();
-        computeLighting = true;
+        computeLighting = !hackyReallyDontComputeLighting;
         colour = baseColour = alphaOverride = -1;
     }
 

src/main/java/codechicken/lib/render/pipeline/CCRenderPipeline.java

@@ -57,7 +57,7 @@ public void rebuild() {
         if (renderState.cFmt.hasColor) {
             addAttribute(renderState.colourAttrib);
         }
-        if (renderState.computeLighting) {
+        if (renderState.computeLighting && !renderState.hackyReallyDontComputeLighting) {
             addAttribute(renderState.lightingAttrib);
         }