3 files changed, 3 insertions, 0 deletions
diff --git a/tests/autodiff/material2/DiffuseMaterial.slang b/tests/autodiff/material2/DiffuseMaterial.slang
index 1422ee30c..a5c0aaa30 100644
--- a/tests/autodiff/material2/DiffuseMaterial.slang
+++ b/tests/autodiff/material2/DiffuseMaterial.slang
@@ -16,6 +16,7 @@ public struct DiffuseMaterial : IMaterial
     }
 
     [BackwardDifferentiable]
+    [NoDiffThis]
     public DiffuseMaterialInstance setupMaterialInstance(out MaterialInstanceData miData)
     {
         float3 albedo = getAlbedo(baseColor);
diff --git a/tests/autodiff/material2/GlossyMaterial.slang b/tests/autodiff/material2/GlossyMaterial.slang
index 1070c6e63..12fbc5f73 100644
--- a/tests/autodiff/material2/GlossyMaterial.slang
+++ b/tests/autodiff/material2/GlossyMaterial.slang
@@ -30,6 +30,7 @@ public struct GlossyMaterial : IMaterial
     }
 
     [BackwardDifferentiable]
+    [NoDiffThis]
     public GlossyMaterialInstance setupMaterialInstance(out MaterialInstanceData miData)
     {
         float3 albedo = getAlbedo(baseColor);
diff --git a/tests/autodiff/material2/MxLayeredMaterial.slang b/tests/autodiff/material2/MxLayeredMaterial.slang
index fabfde80c..9e88d2ce9 100644
--- a/tests/autodiff/material2/MxLayeredMaterial.slang
+++ b/tests/autodiff/material2/MxLayeredMaterial.slang
@@ -52,6 +52,7 @@ public struct MxLayeredMaterial : IMaterial
     }
 
     [Differentiable]
+    [NoDiffThis]
     public UsedMaterialInstance setupMaterialInstance(out MaterialInstanceData miData)
     {
         float3 albedo = getAlbedo(baseColor);