Method CaptureFrame

framework/d3d11/amd_sdk/src/HelperFunctions.cpp:220–274

-------------------------------------------------------------------------------------- Captures a frame and dumps it to disk --------------------------------------------------------------------------------------

// Captures a frame and dumps it to disk
//--------------------------------------------------------------------------------------
void AMD::CaptureFrame( ID3D11Texture2D* pCaptureTexture, WCHAR* pszCaptureFileName )
{
    assert( NULL != pCaptureTexture );
    assert( NULL != pszCaptureFileName );

    // Retrieve RT resource
    ID3D11Resource *pRTResource;
    DXUTGetD3D11RenderTargetView()->GetResource( &pRTResource );

    // Retrieve a Texture2D interface from resource
    ID3D11Texture2D* RTTexture;
    pRTResource->QueryInterface( __uuidof(ID3D11Texture2D), (LPVOID*)&RTTexture );

    // Check if RT is multisampled or not
    D3D11_TEXTURE2D_DESC TexDesc;
    RTTexture->GetDesc( &TexDesc );
    if (TexDesc.SampleDesc.Count > 1)
    {
        // RT is multisampled, need resolving before dumping to disk

        // Create single-sample RT of the same type and dimensions
        DXGI_SAMPLE_DESC SingleSample = { 1, 0 };
        TexDesc.CPUAccessFlags = D3D11_CPU_ACCESS_READ;
        TexDesc.MipLevels = 1;
        TexDesc.Usage = D3D11_USAGE_DEFAULT;
        TexDesc.CPUAccessFlags = 0;
        TexDesc.BindFlags = 0;
        TexDesc.SampleDesc = SingleSample;

        ID3D11Texture2D *pSingleSampleTexture;
        DXUTGetD3D11Device()->CreateTexture2D( &TexDesc, NULL, &pSingleSampleTexture );

        DXUTGetD3D11DeviceContext()->ResolveSubresource( pSingleSampleTexture, 0, RTTexture, 0, TexDesc.Format );

        // Copy RT into STAGING texture
        DXUTGetD3D11DeviceContext()->CopyResource( pCaptureTexture, pSingleSampleTexture );

        DXUTSaveTextureToFile( DXUTGetD3D11DeviceContext(), pCaptureTexture, false, pszCaptureFileName );

        SAFE_RELEASE( pSingleSampleTexture );
    }
    else
    {
        // Single sample case

        // Copy RT into STAGING texture
        DXUTGetD3D11DeviceContext()->CopyResource( pCaptureTexture, pRTResource );

        DXUTSaveTextureToFile( DXUTGetD3D11DeviceContext(), pCaptureTexture, false, pszCaptureFileName );
    }

    SAFE_RELEASE( RTTexture );

    SAFE_RELEASE( pRTResource );
}


//--------------------------------------------------------------------------------------