diff --git a/util/test/demos/d3d12/d3d12_parameter_zoo.cpp b/util/test/demos/d3d12/d3d12_parameter_zoo.cpp
index 0d4060f1e..3158155c2 100644
--- a/util/test/demos/d3d12/d3d12_parameter_zoo.cpp
+++ b/util/test/demos/d3d12/d3d12_parameter_zoo.cpp
@@ -142,8 +142,8 @@ float4 main() : SV_Target0
 
     ID3D12RootSignaturePtr duplicateSig = MakeSig(
         {
-            cbvParam(D3D12_SHADER_VISIBILITY_PIXEL, 0, 0),
-            constParam(D3D12_SHADER_VISIBILITY_PIXEL, 0, 1, 1),
+            cbvParam(D3D12_SHADER_VISIBILITY_ALL, 0, 0),
+            constParam(D3D12_SHADER_VISIBILITY_ALL, 0, 1, 1),
         },
         D3D12_ROOT_SIGNATURE_FLAG_NONE);
 
@@ -347,6 +347,10 @@ float4 main() : SV_Target0
 
       cmd->SetDescriptorHeaps(2, heaps);
 
+      cmd->SetComputeRootSignature(duplicateSig);
+      cmd->SetComputeRoot32BitConstants(1, 0, &debug, 0);
+      cmd->SetGraphicsRoot32BitConstants(1, 0, &debug, 0);
+
       IASetVertexBuffer(cmd, vb2, sizeof(DefaultA2V), 0);
       IASetVertexBuffer(cmd, vb, sizeof(DefaultA2V), 0);
       D3D12_INDEX_BUFFER_VIEW view;