Use COM object dynamic cast for RT resource queries.

src/libGLESv2/renderer/d3d/d3d11/Image11.cpp

@@ -324,8 +324,9 @@ gl::Error Image11::loadCompressedData(GLint xoffset, GLint yoffset, GLint zoffse
 void Image11::copy(GLint xoffset, GLint yoffset, GLint zoffset, const gl::Rectangle &sourceArea, RenderTarget *source)
 {
     RenderTarget11 *renderTarget = RenderTarget11::makeRenderTarget11(source);
+    ASSERT(renderTarget->getTexture());
 
-    ID3D11Texture2D *colorBufferTexture = mRenderer->getRenderTargetResource(renderTarget);
+    ID3D11Texture2D *colorBufferTexture = d3d11::DynamicCastComObject<ID3D11Texture2D>(renderTarget->getTexture());
     unsigned int subresourceIndex = renderTarget->getSubresourceIndex();
 
     if (!colorBufferTexture)

src/libGLESv2/renderer/d3d/d3d11/Renderer11.cpp

@@ -2472,7 +2472,7 @@ gl::Error Renderer11::fastCopyBufferToTexture(const gl::PixelUnpackState &unpack
     return mPixelTransfer->copyBufferToTexture(unpack, offset, destRenderTarget, destinationFormat, sourcePixelsType, destArea);
 }
 
-bool Renderer11::getRenderTargetResource(gl::FramebufferAttachment *colorbuffer, unsigned int *subresourceIndex, ID3D11Texture2D **resource)
+bool Renderer11::getRenderTargetResource(gl::FramebufferAttachment *colorbuffer, unsigned int *subresourceIndexOut, ID3D11Texture2D **texture2DOut)
 {
     ASSERT(colorbuffer != NULL);
 
@@ -2482,39 +2482,12 @@ bool Renderer11::getRenderTargetResource(gl::FramebufferAttachment *colorbuffer,
         return false;
     }
 
-    *subresourceIndex = renderTarget->getSubresourceIndex();
-    *resource = getRenderTargetResource(renderTarget);
+    ID3D11Resource *renderTargetResource = renderTarget->getTexture();
 
-    return (*resource != NULL);
-}
-
-ID3D11Texture2D *Renderer11::getRenderTargetResource(RenderTarget11 *renderTarget)
-{
-    ASSERT(renderTarget);
-
-    ID3D11RenderTargetView *colorBufferRTV = renderTarget->getRenderTargetView();
-    ID3D11Texture2D *texture2D = NULL;
-
-    if (colorBufferRTV)
-    {
-        ID3D11Resource *textureResource = NULL;
-        colorBufferRTV->GetResource(&textureResource);
-
-        if (textureResource)
-        {
-            HRESULT result = textureResource->QueryInterface(__uuidof(ID3D11Texture2D), reinterpret_cast<void**>(&texture2D));
-            SafeRelease(textureResource);
-
-            if (FAILED(result))
-            {
-                ERR("Failed to extract the ID3D11Texture2D from the render target resource, "
-                    "HRESULT: 0x%X.", result);
-                return gl::error(GL_OUT_OF_MEMORY, static_cast <ID3D11Texture2D*>(NULL));
-            }
-        }
-    }
+    *subresourceIndexOut = renderTarget->getSubresourceIndex();
+    *texture2DOut = d3d11::DynamicCastComObject<ID3D11Texture2D>(renderTargetResource);
 
-    return texture2D;
+    return (*texture2DOut != NULL);
 }
 
 gl::Error Renderer11::blitRect(gl::Framebuffer *readTarget, const gl::Rectangle &readRect, gl::Framebuffer *drawTarget, const gl::Rectangle &drawRect,

src/libGLESv2/renderer/d3d/d3d11/Renderer11.h

@@ -189,8 +189,7 @@ class Renderer11 : public Renderer
     virtual gl::Error fastCopyBufferToTexture(const gl::PixelUnpackState &unpack, unsigned int offset, RenderTarget *destRenderTarget,
                                               GLenum destinationFormat, GLenum sourcePixelsType, const gl::Box &destArea);
 
-    bool getRenderTargetResource(gl::FramebufferAttachment *colorbuffer, unsigned int *subresourceIndex, ID3D11Texture2D **resource);
-    ID3D11Texture2D *getRenderTargetResource(RenderTarget11 *renderTarget);
+    bool getRenderTargetResource(gl::FramebufferAttachment *colorbuffer, unsigned int *subresourceIndexOut, ID3D11Texture2D **texture2DOut);
     void unapplyRenderTargets();
     void setOneTimeRenderTarget(ID3D11RenderTargetView *renderTargetView);
     void packPixels(ID3D11Texture2D *readTexture, const PackPixelsParams &params, uint8_t *pixelsOut);