fix export of UV offset/tiling for non-main textures

KhronosGroup · Mar 12, 2021 · d49a58b · d49a58b
1 parent 43a4603
commit d49a58b
Showing 1 changed file with 8 additions and 1 deletion.
diff --git a/UnityGLTF/Assets/UnityGLTF/Runtime/Scripts/GLTFSceneExporter.cs b/UnityGLTF/Assets/UnityGLTF/Runtime/Scripts/GLTFSceneExporter.cs
@@ -1362,7 +1362,14 @@ private void ExportTextureTransform(TextureInfo def, Material mat, string texNam
 			Vector2 offset = mat.GetTextureOffset(texName);
 			Vector2 scale = mat.GetTextureScale(texName);
 
-			if (offset == Vector2.zero && scale == Vector2.one) return;
+			if (offset == Vector2.zero && scale == Vector2.one)
+			{
+				// difficult choice here: some shaders might support texture transform per-texture, others use the main transform.
+				offset = mat.mainTextureOffset;
+				scale = mat.mainTextureScale;
+				// offset.x = 1 - offset.x;
+				// return;
+			}
 
 			if (_root.ExtensionsUsed == null)
 			{