Use normal to calculate quad facing

Author: xCollateral

src/main/java/net/vulkanmod/mixin/render/block/BakedQuadM.java

@@ -31,14 +31,9 @@ public class BakedQuadM implements ModelQuadView {
     private void onInit(int[] vertices, int tintIndex, Direction face, TextureAtlasSprite textureAtlasSprite, boolean shade, CallbackInfo ci) {
         this.flags = ModelQuadFlags.getQuadFlags(this, face);
 
-        if (face != null) {
-            this.facing = QuadFacing.fromDirection(face);
-            this.normal = NormalHelper.packedNormalFromDirection(face);
-        } else {
-            int packedNormal = NormalHelper.computePackedNormal(this);
-            this.facing = QuadFacing.fromNormal(packedNormal);
-            this.normal = packedNormal;
-        }
+        int packedNormal = NormalHelper.computePackedNormal(this);
+        this.normal = packedNormal;
+        this.facing = QuadFacing.fromNormal(packedNormal);
     }
 
     @Override

src/main/java/net/vulkanmod/render/chunk/build/frapi/mesh/QuadViewImpl.java

@@ -73,7 +73,7 @@ public void load() {
 		isGeometryInvalid = false;
 		nominalFace = lightFace();
 		NormalHelper.unpackNormal(packedFaceNormal(), faceNormal);
-		facing = QuadFacing.fromDirection(lightFace());
+		facing = QuadFacing.fromNormal(faceNormal);
 	}
 
 	protected void computeGeometry() {
@@ -90,7 +90,7 @@ protected void computeGeometry() {
 			// depends on light face
 			data[baseIndex + HEADER_BITS] = EncodingFormat.geometryFlags(data[baseIndex + HEADER_BITS], ModelQuadFlags.getQuadFlags(this, lightFace));
 
-			facing = QuadFacing.fromDirection(lightFace);
+			facing = QuadFacing.fromNormal(faceNormal);
 		}
 	}
 

src/main/java/net/vulkanmod/render/chunk/cull/QuadFacing.java

@@ -3,6 +3,7 @@
 import net.minecraft.core.Direction;
 import net.minecraft.util.Mth;
 import net.vulkanmod.render.vertex.format.I32_SNorm;
+import org.joml.Vector3f;
 
 public enum QuadFacing {
     X_POS,
@@ -32,6 +33,14 @@ public static QuadFacing fromNormal(int packedNormal) {
         final float y = I32_SNorm.unpackY(packedNormal);
         final float z = I32_SNorm.unpackZ(packedNormal);
 
+        return fromNormal(x, y, z);
+    }
+
+    public static QuadFacing fromNormal(Vector3f normal) {
+        return fromNormal(normal.x(), normal.y(), normal.z());
+    }
+
+    public static QuadFacing fromNormal(float x, float y, float z) {
         final float absX = Math.abs(x);
         final float absY = Math.abs(y);
         final float absZ = Math.abs(z);

src/main/java/net/vulkanmod/render/model/quad/ModelQuad.java

@@ -4,6 +4,9 @@
 import net.minecraft.core.Direction;
 import net.vulkanmod.render.chunk.cull.QuadFacing;
 
+/**
+ * Only used by FluidRenderer
+ */
 public class ModelQuad implements ModelQuadView {
     public static final int VERTEX_SIZE = 8;