1 files changed, 5 insertions, 0 deletions
diff --git a/tests/autodiff/material2/DiffuseMaterial.slang b/tests/autodiff/material2/DiffuseMaterial.slang
index d4ae579ff..1422ee30c 100644
--- a/tests/autodiff/material2/DiffuseMaterial.slang
+++ b/tests/autodiff/material2/DiffuseMaterial.slang
@@ -21,6 +21,11 @@ public struct DiffuseMaterial : IMaterial
         float3 albedo = getAlbedo(baseColor);
         DiffuseMaterialInstance mi = { baseColor };
         for (uint i = 0; i < 3; i++) miData.data[i] = albedo[i];
+
+        // unused
+        miData.data[3] = 0.f;
+        miData.data[4] = 0.f;
+        
         return mi;
     }
 };