sort opaque meshes first.

MarginallyClever · Sep 25, 2024 · c59558c · c59558c
1 parent 4a22ef5
commit c59558c
Showing 1 changed file with 9 additions and 1 deletion.
diff --git a/src/main/java/com/marginallyclever/ro3/apps/viewport/renderpasses/DrawMeshes.java b/src/main/java/com/marginallyclever/ro3/apps/viewport/renderpasses/DrawMeshes.java
@@ -219,8 +219,16 @@ private void sortMeshMaterialList(List<MeshMaterial> meshMaterial) {
             if(m1==null) return -1;
             if(m2==null) return 1;
 
-            // TODO sort opaque materials first
+            // sort opaque materials first
+            var a1 = m1.getDiffuseColor().getAlpha();
+            var a2 = m2.getDiffuseColor().getAlpha();
+            if(a1!=255 || a2!=255) {
+                return a2-a1;
+            }
+
             // TODO sort transparent materials by distance from camera
+
+            // sort by UniqueID so there's a consistent order
             return m1.getUniqueID().compareTo(m2.getUniqueID());
         });
     }