fixed normal calculation with draco meshes

KhronosGroup · Jul 16, 2023 · 752c581 · 752c581
1 parent 644e631
commit 752c581
Showing 1 changed file with 6 additions and 11 deletions.
diff --git a/UnityGLTF/Assets/UnityGLTF/Runtime/Scripts/SceneImporter/ImporterMeshes.cs b/UnityGLTF/Assets/UnityGLTF/Runtime/Scripts/SceneImporter/ImporterMeshes.cs
@@ -233,16 +233,6 @@ protected async Task ConstructUnityMesh(GLTFMesh gltfMesh,DracoMeshLoader.Decode
 				}
 			}
 
-			if (decodeResults[0].calculateNormals)
-			{
-				mesh.RecalculateNormals();
-			}
-
-			if (requireTangents)
-			{
-				mesh.RecalculateTangents();
-			}
-
 			await YieldOnTimeoutAndThrowOnLowMemory();
 
 			verticesLength = (uint) mesh.vertexCount;
@@ -299,11 +289,16 @@ protected async Task ConstructUnityMesh(GLTFMesh gltfMesh,DracoMeshLoader.Decode
 			}
 			await YieldOnTimeoutAndThrowOnLowMemory();
 
-			if (mesh.normals != null && mesh.normals.Length > 0 && mesh.GetTopology(0) == MeshTopology.Triangles)
+			if (decodeResults[0].calculateNormals && mesh.normals != null && mesh.normals.Length > 0 && mesh.GetTopology(0) == MeshTopology.Triangles)
 			{
 				mesh.RecalculateNormals();
 			}
 
+			if (requireTangents)
+			{
+				mesh.RecalculateTangents();
+			}
+
 			if (!KeepCPUCopyOfMesh)
 			{
 				mesh.UploadMeshData(true);