diff --git a/util/test/demos/d3d11/d3d11_shader_debug_zoo.cpp b/util/test/demos/d3d11/d3d11_shader_debug_zoo.cpp
index c81b32d38..c082f3de7 100644
--- a/util/test/demos/d3d11/d3d11_shader_debug_zoo.cpp
+++ b/util/test/demos/d3d11/d3d11_shader_debug_zoo.cpp
@@ -1026,7 +1026,7 @@ float4 main(v2f IN, uint samp : SV_SampleIndex) : SV_Target0
     ID3D11Texture2DPtr testTex = MakeTexture(DXGI_FORMAT_R32G32B32A32_FLOAT, 16, 16).Mips(3).SRV();
     ID3D11ShaderResourceViewPtr testSRV = MakeSRV(testTex);
 
-    ID3D11Texture2DPtr msTex = MakeTexture(DXGI_FORMAT_R32_FLOAT, 16, 16).Multisampled(4).RTV().SRV();
+    ID3D11Texture2DPtr msTex = MakeTexture(DXGI_FORMAT_R32_FLOAT, 32, 32).Multisampled(4).RTV().SRV();
     ID3D11ShaderResourceViewPtr msSRV = MakeSRV(msTex);
 
     ID3D11BufferPtr rawBuf = MakeBuffer().SRV().ByteAddressed().Data(testdata);
diff --git a/util/test/demos/d3d12/d3d12_shader_debug_zoo.cpp b/util/test/demos/d3d12/d3d12_shader_debug_zoo.cpp
index 1cc891665..08aae6e56 100644
--- a/util/test/demos/d3d12/d3d12_shader_debug_zoo.cpp
+++ b/util/test/demos/d3d12/d3d12_shader_debug_zoo.cpp
@@ -976,7 +976,7 @@ float4 main(v2f IN, uint samp : SV_SampleIndex) : SV_Target0
         .NumElements(12)
         .CreateGPU(1);
 
-    ID3D12ResourcePtr msTex = MakeTexture(DXGI_FORMAT_R32_FLOAT, 16, 16).Multisampled(4).RTV();
+    ID3D12ResourcePtr msTex = MakeTexture(DXGI_FORMAT_R32_FLOAT, 32, 32).Multisampled(4).RTV();
     MakeSRV(msTex).CreateGPU(4);
 
     Texture rgba8;