Bug 1417373 - Add initialize setting to texture Cb's property description; r=jya

MozReview-Commit-ID: DzIx5vdIE48

--HG--
extra : rebase_source : cfae6b5b7ef31bf541d5c5c59f1f6ee38bcf5c01

gfx/layers/D3D11YCbCrImage.cpp

@@ -206,6 +206,13 @@ D3D11YCbCrImage::GetAsSourceSurface()
   desc.Usage = D3D11_USAGE_STAGING;
 
   dev->CreateTexture2D(&desc, nullptr, getter_AddRefs(softTexCb));
+
+  texCr->GetDesc(&desc);
+  desc.BindFlags = 0;
+  desc.MiscFlags = 0;
+  desc.CPUAccessFlags = D3D11_CPU_ACCESS_READ;
+  desc.Usage = D3D11_USAGE_STAGING;
+
   dev->CreateTexture2D(&desc, nullptr, getter_AddRefs(softTexCr));
 
   RefPtr<ID3D11DeviceContext> ctx;