Makes NVidia Card Default in Ambient Occlusion example. (#740)

Fixes the selection of iGPU before dGPU for this sample
microsoft · Sep 29, 2021 · 7bf2e12 · 7bf2e12
1 parent 05c6b64
commit 7bf2e12
Showing 1 changed file with 9 additions and 2 deletions.
diff --git a/...g/src/D3D12RaytracingRealTimeDenoisedAmbientOcclusion/SampleCore/util/DeviceResources.cpp b/...g/src/D3D12RaytracingRealTimeDenoisedAmbientOcclusion/SampleCore/util/DeviceResources.cpp
@@ -638,8 +638,15 @@ void DeviceResources::InitializeAdapter(IDXGIAdapter1** ppAdapter)
     *ppAdapter = nullptr;
 
     ComPtr<IDXGIAdapter1> adapter;
-    for (UINT adapterID = 0; DXGI_ERROR_NOT_FOUND != m_dxgiFactory->EnumAdapters1(adapterID, &adapter); ++adapterID)
+    ComPtr<IDXGIFactory6> factory6;
+    HRESULT hr = m_dxgiFactory.As(&factory6);
+    if (FAILED(hr))
     {
+        throw exception("DXGI 1.6 not supported");
+    }
+    for (UINT adapterID = 0; DXGI_ERROR_NOT_FOUND != factory6->EnumAdapterByGpuPreference(adapterID, DXGI_GPU_PREFERENCE_HIGH_PERFORMANCE, IID_PPV_ARGS(&adapter)); ++adapterID)
+    {
+
         if (m_adapterIDoverride != UINT_MAX && adapterID != m_adapterIDoverride)
         {
             continue;
@@ -694,4 +701,4 @@ void DeviceResources::InitializeAdapter(IDXGIAdapter1** ppAdapter)
     }
 
     *ppAdapter = adapter.Detach();
-}
+}