Added a helper Renderer11::resolveMultisampledTexture method.
TRAC #22416
Signed-off-by: Jamie Madill
Signed-off-by: Shannon Woods
Author: Geoff Lang
git-svn-id: https://angleproject.googlecode.com/svn/branches/dx11proto@1866 736b8ea6-26fd-11df-bfd4-992fa37f6226
diff --git a/src/libGLESv2/renderer/Renderer11.cpp b/src/libGLESv2/renderer/Renderer11.cpp
index 38c408a..b63d361 100644
--- a/src/libGLESv2/renderer/Renderer11.cpp
+++ b/src/libGLESv2/renderer/Renderer11.cpp
@@ -3153,4 +3153,42 @@
stagingTex = NULL;
}
+ID3D11Texture2D *Renderer11::resolveMultisampledTexture(ID3D11Texture2D *source, unsigned int subresource)
+{
+ D3D11_TEXTURE2D_DESC textureDesc;
+ source->GetDesc(&textureDesc);
+
+ if (textureDesc.SampleDesc.Count > 1)
+ {
+ D3D11_TEXTURE2D_DESC resolveDesc;
+ resolveDesc.Width = textureDesc.Width;
+ resolveDesc.Height = textureDesc.Height;
+ resolveDesc.MipLevels = 1;
+ resolveDesc.ArraySize = 1;
+ resolveDesc.Format = textureDesc.Format;
+ resolveDesc.SampleDesc.Count = 1;
+ resolveDesc.SampleDesc.Quality = 0;
+ resolveDesc.Usage = textureDesc.Usage;
+ resolveDesc.BindFlags = textureDesc.BindFlags;
+ resolveDesc.CPUAccessFlags = 0;
+ resolveDesc.MiscFlags = 0;
+
+ ID3D11Texture2D *resolveTexture = NULL;
+ HRESULT result = mDevice->CreateTexture2D(&resolveDesc, NULL, &resolveTexture);
+ if (FAILED(result))
+ {
+ ERR("Failed to create a multisample resolve texture, HRESULT: 0x%X.", result);
+ return NULL;
+ }
+
+ mDeviceContext->ResolveSubresource(resolveTexture, 0, source, subresource, textureDesc.Format);
+ return resolveTexture;
+ }
+ else
+ {
+ source->AddRef();
+ return source;
+ }
+}
+
}