Beispiel #1
0
//---------------------------------------------------------------------------------
static size_t _WICBitsPerPixel( REFGUID targetGuid )
{
    IWICImagingFactory* pWIC = _GetWIC();
    if ( !pWIC )
        return 0;
 
    ScopedObject<IWICComponentInfo> cinfo;
    if ( FAILED( pWIC->CreateComponentInfo( targetGuid, &cinfo ) ) )
        return 0;

    WICComponentType type;
    if ( FAILED( cinfo->GetComponentType( &type ) ) )
        return 0;

    if ( type != WICPixelFormat )
        return 0;

    ScopedObject<IWICPixelFormatInfo> pfinfo;
    if ( FAILED( cinfo->QueryInterface( __uuidof(IWICPixelFormatInfo), reinterpret_cast<void**>( &pfinfo )  ) ) )
        return 0;

    UINT bpp;
    if ( FAILED( pfinfo->GetBitsPerPixel( &bpp ) ) )
        return 0;

    return bpp;
}
//-------------------------------------------------------------------------------------
// Do flip/rotate operation using WIC
//-------------------------------------------------------------------------------------
static HRESULT _PerformFlipRotateUsingWIC( _In_ const Image& srcImage, _In_ DWORD flags,
                                           _In_ const WICPixelFormatGUID& pfGUID, _In_ const Image& destImage )
{
    if ( !srcImage.pixels || !destImage.pixels )
        return E_POINTER;

    assert( srcImage.format == destImage.format );

    IWICImagingFactory* pWIC = _GetWIC();
    if ( !pWIC )
        return E_NOINTERFACE;

    ScopedObject<IWICBitmap> source;
    HRESULT hr = pWIC->CreateBitmapFromMemory( static_cast<UINT>( srcImage.width ), static_cast<UINT>( srcImage.height ), pfGUID,
                                               static_cast<UINT>( srcImage.rowPitch ), static_cast<UINT>( srcImage.slicePitch ),
                                               srcImage.pixels, &source );
    if ( FAILED(hr) )
        return hr;

    ScopedObject<IWICBitmapFlipRotator> FR;
    hr = pWIC->CreateBitmapFlipRotator( &FR );
    if ( FAILED(hr) )
        return hr;

    hr = FR->Initialize( source.Get(), static_cast<WICBitmapTransformOptions>( flags ) );
    if ( FAILED(hr) )
        return hr;

    WICPixelFormatGUID pfFR;
    hr = FR->GetPixelFormat( &pfFR );
    if ( FAILED(hr) )
        return hr;

    if ( memcmp( &pfFR, &pfGUID, sizeof(GUID) ) != 0 )
    {
        // Flip/rotate should return the same format as the source...
        return HRESULT_FROM_WIN32( ERROR_NOT_SUPPORTED );
    }

    UINT nwidth, nheight;
    hr = FR->GetSize( &nwidth, &nheight );
    if ( FAILED(hr) )
        return hr;

    if ( destImage.width != nwidth || destImage.height != nheight )
        return E_FAIL;

    hr = FR->CopyPixels( 0, static_cast<UINT>( destImage.rowPitch ), static_cast<UINT>( destImage.slicePitch ), destImage.pixels );
    if ( FAILED(hr) )
        return hr;

    return S_OK;
}
Beispiel #3
0
	HRESULT loadAsShaderResource( const std::wstring &file, ID3D11Resource **texture, ID3D11ShaderResourceView **shaderView,
									ID3D11Device *dxDev, ID3D11DeviceContext *dxDevCont )
	{
		if ( !dxDev || !dxDevCont )
			return E_INVALIDARG;

		if ( !comIsInit )
		{
			CoInitialize(NULL);
			comIsInit = true;
		}

		ScopedObject<IWICBitmapDecoder> decoder;
		HRESULT res = getWIC()->CreateDecoderFromFilename( file.c_str(), 0, GENERIC_READ, WICDecodeMetadataCacheOnDemand, &decoder );
		if ( FAILED(res) )
			return res;

		ScopedObject<IWICBitmapFrameDecode> frame;
		res = decoder->GetFrame(0, &frame);
		if ( FAILED(res) )
			return res;

		UINT width, height;
		res = frame->GetSize( &width, &height );
		if ( FAILED(res) )
			return res;

		assert( width > 0 && height > 0 );

		//calculate max width and height
		UINT maxSize = D3D11_REQ_TEXTURE2D_U_OR_V_DIMENSION;
		UINT tWidth, tHeight;
		if ( width > maxSize || height > maxSize )
		{
			float ar = (float)height / width;
			if ( width > height )
			{
				tWidth  = maxSize;
				tHeight = (UINT)(float(maxSize) * ar);
			}
			else
			{
				tWidth  = (UINT)(float(maxSize) / ar);
				tHeight = maxSize;
			}
			assert( tWidth <= maxSize && tHeight <= maxSize );
		}
		else
		{
			tWidth  = width;
			tHeight = height;
		}


		// Determine format
		WICPixelFormatGUID pixelFormat;
		res = frame->GetPixelFormat( &pixelFormat );
		WICPixelFormatGUID convertGUID;
		memcpy( &convertGUID, &pixelFormat, sizeof(WICPixelFormatGUID) );

		size_t bpp = 0;

		DXGI_FORMAT format = wicToDXGI( pixelFormat );
		if ( format == DXGI_FORMAT_UNKNOWN )
		{
			for( size_t i = 0; i < _countof(wicConvertList); ++i )
			{
				if ( memcmp( &wicConvertList[i].source, &pixelFormat, sizeof(WICPixelFormatGUID) ) == 0 )
				{
					memcpy( &convertGUID, &wicConvertList[i].target, sizeof(WICPixelFormatGUID) );

					format = wicToDXGI( wicConvertList[i].target );
					assert( format != DXGI_FORMAT_UNKNOWN );
					bpp = wicBitsPerPixel( convertGUID );
					break;
				}
			}

			if ( format == DXGI_FORMAT_UNKNOWN )
				return HRESULT_FROM_WIN32( ERROR_NOT_SUPPORTED );
		}
		else
		{
			bpp = wicBitsPerPixel( pixelFormat );
		}

		if ( !bpp )
			return E_FAIL;


		// Verify our target format is supported by the current device
		// (handles WDDM 1.0 or WDDM 1.1 device driver cases as well as DirectX 11.0 Runtime without 16bpp format support)
		UINT support = 0;
		res = dxDev->CheckFormatSupport( format, &support );
		if ( FAILED(res) || !(support & D3D11_FORMAT_SUPPORT_TEXTURE2D) )
		{
			// Fallback to RGBA 32-bit format which is supported by all devices
			memcpy( &convertGUID, &GUID_WICPixelFormat32bppRGBA, sizeof(WICPixelFormatGUID) );
			format = DXGI_FORMAT_R8G8B8A8_UNORM;
			bpp    = 32;
		}


		// Allocate temporary memory for image
		size_t rowPitch  = ( tWidth * bpp + 7 ) / 8;
		size_t imageSize = rowPitch * tHeight;

		std::unique_ptr<uint8_t[]> temp( new uint8_t[ imageSize ] );
		// Load image data
		if ( memcmp( &convertGUID, &pixelFormat, sizeof(GUID) ) == 0
				&& tWidth == width
				&& tHeight == height )
		{
			// No format conversion or resize needed
			res = frame->CopyPixels( 0, (UINT)rowPitch, (UINT)imageSize, temp.get() );  
			if ( FAILED(res) )
				return res;
		} else if ( tWidth != width || tHeight != height )
		{
			// Resize
			IWICImagingFactory* pWIC = getWIC();
			if ( !pWIC )
				return E_NOINTERFACE;

			ScopedObject<IWICBitmapScaler> scaler;
			res = pWIC->CreateBitmapScaler( &scaler );
			if ( FAILED(res) )
				return res;

			res = scaler->Initialize( frame.get(), tWidth, tHeight, WICBitmapInterpolationModeFant );
			if ( FAILED(res) )
				return res;

			WICPixelFormatGUID pfScaler;
			res = scaler->GetPixelFormat( &pfScaler );
			if ( FAILED(res) )
				return res;

			if ( memcmp( &convertGUID, &pfScaler, sizeof(GUID) ) == 0 )
			{
				// No format conversion needed
				res = scaler->CopyPixels( 0, (UINT)rowPitch, (UINT)imageSize, temp.get() );  
				if ( FAILED(res) )
					return res;
			} else
			{
				ScopedObject<IWICFormatConverter> FC;
				res = pWIC->CreateFormatConverter( &FC );
				if ( FAILED(res) )
					return res;

				res = FC->Initialize( scaler.get(), convertGUID, WICBitmapDitherTypeErrorDiffusion, 0, 0, WICBitmapPaletteTypeCustom );
				if ( FAILED(res) )
					return res;

				res = FC->CopyPixels( 0, (UINT)rowPitch, (UINT)imageSize, temp.get() );  
				if ( FAILED(res) )
					return res;
			}
		} else
		{
			// Format conversion but no resize
			IWICImagingFactory* pWIC = getWIC();
			if ( !pWIC )
				return E_NOINTERFACE;

			ScopedObject<IWICFormatConverter> FC;
			res = pWIC->CreateFormatConverter( &FC );
			if ( FAILED(res) )
				return res;

			res = FC->Initialize( frame.get(), convertGUID, WICBitmapDitherTypeErrorDiffusion, 0, 0, WICBitmapPaletteTypeCustom );
			if ( FAILED(res) )
				return res;

			res = FC->CopyPixels( 0, static_cast<UINT>( rowPitch ), static_cast<UINT>( imageSize ), temp.get() );  
			if ( FAILED(res) )
				return res;
		}


		// See if format is supported for auto-gen mipmaps
		bool autogen = false;
		if ( dxDevCont != 0 && shaderView != 0 ) // Must have context and shader-view to auto generate mipmaps
		{
			UINT fmtSupport = 0;
			res = dxDev->CheckFormatSupport( format, &fmtSupport );
			if ( SUCCEEDED(res) && ( fmtSupport & D3D11_FORMAT_SUPPORT_MIP_AUTOGEN ) )
				autogen = true;
		}


		// Create texture
		D3D11_TEXTURE2D_DESC desc;
		desc.Width				= tWidth;
		desc.Height				= tHeight;
		desc.MipLevels			= autogen ? 0 : 1;
		desc.ArraySize			= 1;
		desc.Format				= format;
		desc.SampleDesc.Count   = 1;
		desc.SampleDesc.Quality = 0;
		desc.Usage				= D3D11_USAGE_DEFAULT;
		desc.BindFlags			= autogen ? (D3D11_BIND_SHADER_RESOURCE | D3D11_BIND_RENDER_TARGET) : (D3D11_BIND_SHADER_RESOURCE);
		desc.CPUAccessFlags		= 0;
		desc.MiscFlags			= autogen ? D3D11_RESOURCE_MISC_GENERATE_MIPS : 0;

		D3D11_SUBRESOURCE_DATA initData;
		initData.pSysMem		  = temp.get();
		initData.SysMemPitch	  = (UINT)rowPitch;
		initData.SysMemSlicePitch = (UINT)imageSize;

		ID3D11Texture2D *tex = nullptr;
		res = dxDev->CreateTexture2D( &desc, autogen ? nullptr : &initData, &tex );
		if ( SUCCEEDED(res) && tex != 0 )
		{
			if (shaderView != 0)
			{
				D3D11_SHADER_RESOURCE_VIEW_DESC SRVDesc;
				memset( &SRVDesc, 0, sizeof( SRVDesc ) );
				SRVDesc.Format				= format;
				SRVDesc.ViewDimension		= D3D11_SRV_DIMENSION_TEXTURE2D;
				SRVDesc.Texture2D.MipLevels = autogen ? -1 : 1;

				res = dxDev->CreateShaderResourceView( tex, &SRVDesc, shaderView );
				if ( FAILED(res) )
				{
					tex->Release();
					return res;
				}

				if ( autogen )
				{
					assert( dxDevCont != 0 );
					dxDevCont->UpdateSubresource( tex, 0, nullptr, temp.get(), (UINT)rowPitch, (UINT)imageSize );
					dxDevCont->GenerateMips( *shaderView );
				}
			}

			if (texture != 0)
				*texture = tex;
			else
				tex->Release();
		}

		return S_OK;
	}
Beispiel #4
0
//---------------------------------------------------------------------------------
static HRESULT CreateTextureFromWIC( _In_ ID3D11Device* d3dDevice,
                                     _In_opt_ ID3D11DeviceContext* d3dContext,
                                     _In_ IWICBitmapFrameDecode *frame,
                                     _Out_opt_ ID3D11Resource** texture,
                                     _Out_opt_ ID3D11ShaderResourceView** textureView,
                                     _In_ size_t maxsize )
{
    UINT width, height;
    HRESULT hr = frame->GetSize( &width, &height );
    if ( FAILED(hr) )
        return hr;

    assert( width > 0 && height > 0 );

    if ( !maxsize )
    {
        // This is a bit conservative because the hardware could support larger textures than
        // the Feature Level defined minimums, but doing it this way is much easier and more
        // performant for WIC than the 'fail and retry' model used by DDSTextureLoader

        switch( d3dDevice->GetFeatureLevel() )
        {
            case D3D_FEATURE_LEVEL_9_1:
            case D3D_FEATURE_LEVEL_9_2:
                maxsize = 2048 /*D3D_FL9_1_REQ_TEXTURE2D_U_OR_V_DIMENSION*/;
                break;

            case D3D_FEATURE_LEVEL_9_3:
                maxsize = 4096 /*D3D_FL9_3_REQ_TEXTURE2D_U_OR_V_DIMENSION*/;
                break;

            case D3D_FEATURE_LEVEL_10_0:
            case D3D_FEATURE_LEVEL_10_1:
                maxsize = 8192 /*D3D10_REQ_TEXTURE2D_U_OR_V_DIMENSION*/;
                break;

            default:
                maxsize = D3D11_REQ_TEXTURE2D_U_OR_V_DIMENSION;
                break;
        }
    }

    assert( maxsize > 0 );

    UINT twidth, theight;
    if ( width > maxsize || height > maxsize )
    {
        float ar = static_cast<float>(height) / static_cast<float>(width);
        if ( width > height )
        {
            twidth = static_cast<UINT>( maxsize );
            theight = static_cast<UINT>( static_cast<float>(maxsize) * ar );
        }
        else
        {
            theight = static_cast<UINT>( maxsize );
            twidth = static_cast<UINT>( static_cast<float>(maxsize) / ar );
        }
        assert( twidth <= maxsize && theight <= maxsize );
    }
    else
    {
        twidth = width;
        theight = height;
    }

	UINT nwidth = 1;
	while(nwidth < twidth)
		nwidth <<= 1;
	if (nwidth != twidth)
		twidth = nwidth;

	UINT nheight = 1;
	while(nheight < theight)
		nheight <<= 1;
	if (nheight != theight)
		theight = nheight;

    // Determine format
    WICPixelFormatGUID pixelFormat;
    hr = frame->GetPixelFormat( &pixelFormat );
    if ( FAILED(hr) )
        return hr;

    WICPixelFormatGUID convertGUID;
    memcpy( &convertGUID, &pixelFormat, sizeof(WICPixelFormatGUID) );

    size_t bpp = 0;

    DXGI_FORMAT format = _WICToDXGI( pixelFormat );
    if ( format == DXGI_FORMAT_UNKNOWN )
    {
        for( size_t i=0; i < _countof(g_WICConvert); ++i )
        {
            if ( memcmp( &g_WICConvert[i].source, &pixelFormat, sizeof(WICPixelFormatGUID) ) == 0 )
            {
                memcpy( &convertGUID, &g_WICConvert[i].target, sizeof(WICPixelFormatGUID) );

                format = _WICToDXGI( g_WICConvert[i].target );
                assert( format != DXGI_FORMAT_UNKNOWN );
                bpp = _WICBitsPerPixel( convertGUID );
                break;
            }
        }

        if ( format == DXGI_FORMAT_UNKNOWN )
            return HRESULT_FROM_WIN32( ERROR_NOT_SUPPORTED );
    }
    else
    {
        bpp = _WICBitsPerPixel( pixelFormat );
    }

    if ( !bpp )
        return E_FAIL;

    // Verify our target format is supported by the current device
    // (handles WDDM 1.0 or WDDM 1.1 device driver cases as well as DirectX 11.0 Runtime without 16bpp format support)
    UINT support = 0;
    hr = d3dDevice->CheckFormatSupport( format, &support );
    if ( FAILED(hr) || !(support & D3D11_FORMAT_SUPPORT_TEXTURE2D) )
    {
        // Fallback to RGBA 32-bit format which is supported by all devices
        memcpy( &convertGUID, &GUID_WICPixelFormat32bppRGBA, sizeof(WICPixelFormatGUID) );
        format = DXGI_FORMAT_R8G8B8A8_UNORM;
        bpp = 32;
    }

    // Allocate temporary memory for image
    size_t rowPitch = ( twidth * bpp + 7 ) / 8;
    size_t imageSize = rowPitch * theight;

    std::unique_ptr<uint8_t[]> temp( new uint8_t[ imageSize ] );

    // Load image data
    if ( memcmp( &convertGUID, &pixelFormat, sizeof(GUID) ) == 0
         && twidth == width
         && theight == height )
    {
        // No format conversion or resize needed
        hr = frame->CopyPixels( 0, static_cast<UINT>( rowPitch ), static_cast<UINT>( imageSize ), temp.get() );  
        if ( FAILED(hr) )
            return hr;
    }
    else if ( twidth != width || theight != height )
    {
        // Resize
        IWICImagingFactory* pWIC = _GetWIC();
        if ( !pWIC )
            return E_NOINTERFACE;

        ScopedObject<IWICBitmapScaler> scaler;
        hr = pWIC->CreateBitmapScaler( &scaler );
        if ( FAILED(hr) )
            return hr;

        hr = scaler->Initialize( frame, twidth, theight, WICBitmapInterpolationModeFant );
        if ( FAILED(hr) )
            return hr;

        WICPixelFormatGUID pfScaler;
        hr = scaler->GetPixelFormat( &pfScaler );
        if ( FAILED(hr) )
            return hr;

        if ( memcmp( &convertGUID, &pfScaler, sizeof(GUID) ) == 0 )
        {
            // No format conversion needed
            hr = scaler->CopyPixels( 0, static_cast<UINT>( rowPitch ), static_cast<UINT>( imageSize ), temp.get() );  
            if ( FAILED(hr) )
                return hr;
        }
        else
        {
            ScopedObject<IWICFormatConverter> FC;
            hr = pWIC->CreateFormatConverter( &FC );
            if ( FAILED(hr) )
                return hr;

            hr = FC->Initialize( scaler.Get(), convertGUID, WICBitmapDitherTypeErrorDiffusion, 0, 0, WICBitmapPaletteTypeCustom );
            if ( FAILED(hr) )
                return hr;

            hr = FC->CopyPixels( 0, static_cast<UINT>( rowPitch ), static_cast<UINT>( imageSize ), temp.get() );  
            if ( FAILED(hr) )
                return hr;
        }
    }
    else
    {
        // Format conversion but no resize
        IWICImagingFactory* pWIC = _GetWIC();
        if ( !pWIC )
            return E_NOINTERFACE;

        ScopedObject<IWICFormatConverter> FC;
        hr = pWIC->CreateFormatConverter( &FC );
        if ( FAILED(hr) )
            return hr;

        hr = FC->Initialize( frame, convertGUID, WICBitmapDitherTypeErrorDiffusion, 0, 0, WICBitmapPaletteTypeCustom );
        if ( FAILED(hr) )
            return hr;

        hr = FC->CopyPixels( 0, static_cast<UINT>( rowPitch ), static_cast<UINT>( imageSize ), temp.get() );  
        if ( FAILED(hr) )
            return hr;
    }

    // See if format is supported for auto-gen mipmaps (varies by feature level)
    bool autogen = false;
    if ( d3dContext != 0 && textureView != 0 ) // Must have context and shader-view to auto generate mipmaps
    {
        UINT fmtSupport = 0;
        hr = d3dDevice->CheckFormatSupport( format, &fmtSupport );
        if ( SUCCEEDED(hr) && ( fmtSupport & D3D11_FORMAT_SUPPORT_MIP_AUTOGEN ) )
        {
            autogen = true;
        }
    }

    // Create texture
    D3D11_TEXTURE2D_DESC desc;
    desc.Width = twidth;
    desc.Height = theight;
    desc.MipLevels = (autogen) ? 0 : 1;
    desc.ArraySize = 1;
    desc.Format = format;
    desc.SampleDesc.Count = 1;
    desc.SampleDesc.Quality = 0;
    desc.Usage = D3D11_USAGE_DEFAULT;
    desc.BindFlags = (autogen) ? (D3D11_BIND_SHADER_RESOURCE | D3D11_BIND_RENDER_TARGET) : (D3D11_BIND_SHADER_RESOURCE);
    desc.CPUAccessFlags = 0;
    desc.MiscFlags = (autogen) ? D3D11_RESOURCE_MISC_GENERATE_MIPS : 0;

    D3D11_SUBRESOURCE_DATA initData;
    initData.pSysMem = temp.get();
    initData.SysMemPitch = static_cast<UINT>( rowPitch );
    initData.SysMemSlicePitch = static_cast<UINT>( imageSize );

    ID3D11Texture2D* tex = nullptr;
    hr = d3dDevice->CreateTexture2D( &desc, (autogen) ? nullptr : &initData, &tex );
    if ( SUCCEEDED(hr) && tex != 0 )
    {
        if (textureView != 0)
        {
            D3D11_SHADER_RESOURCE_VIEW_DESC SRVDesc;
            memset( &SRVDesc, 0, sizeof( SRVDesc ) );
            SRVDesc.Format = format;
            SRVDesc.ViewDimension = D3D11_SRV_DIMENSION_TEXTURE2D;
            SRVDesc.Texture2D.MipLevels = (autogen) ? -1 : 1;

            hr = d3dDevice->CreateShaderResourceView( tex, &SRVDesc, textureView );
            if ( FAILED(hr) )
            {
                tex->Release();
                return hr;
            }

            if ( autogen )
            {
                assert( d3dContext != 0 );
                d3dContext->UpdateSubresource( tex, 0, nullptr, temp.get(), static_cast<UINT>(rowPitch), static_cast<UINT>(imageSize) );
                d3dContext->GenerateMips( *textureView );
            }
        }

        if (texture != 0)
        {
            *texture = tex;
        }
        else
        {
#if defined(_DEBUG) || defined(PROFILE)
            tex->SetPrivateData( WKPDID_D3DDebugObjectName,
                                 sizeof("WICTextureLoader")-1,
                                 "WICTextureLoader"
                               );
#endif
            tex->Release();
        }
    }

    return hr;
}
Beispiel #5
0
 	void StubsManager::addStub(ScopedObject<StubsManager::Stub> Stub)
 	{
 		stubs_.insert(stub_map_t::value_type(Stub->getCmdID(), Stub));
 	}
_Use_decl_annotations_
HRESULT DirectX::CreateWICTextureFromFileEx( ID3D11Device* d3dDevice,
                                             ID3D11DeviceContext* d3dContext,
                                             const wchar_t* fileName,
                                             size_t maxsize,
                                             D3D11_USAGE usage,
                                             unsigned int bindFlags,
                                             unsigned int cpuAccessFlags,
                                             unsigned int miscFlags,
                                             bool forceSRGB,
                                             ID3D11Resource** texture,
                                             ID3D11ShaderResourceView** textureView )
{
    if ( texture )
    {
        *texture = nullptr;
    }
    if ( textureView )
    {
        *textureView = nullptr;
    }

    if (!d3dDevice || !fileName || (!texture && !textureView))
        return E_INVALIDARG;

    IWICImagingFactory* pWIC = _GetWIC();
    if ( !pWIC )
        return E_NOINTERFACE;

    // Initialize WIC
    ScopedObject<IWICBitmapDecoder> decoder;
    HRESULT hr = pWIC->CreateDecoderFromFilename( fileName, 0, GENERIC_READ, WICDecodeMetadataCacheOnDemand, &decoder );
    if ( FAILED(hr) )
        return hr;

    ScopedObject<IWICBitmapFrameDecode> frame;
    hr = decoder->GetFrame( 0, &frame );
    if ( FAILED(hr) )
        return hr;

    hr = CreateTextureFromWIC( d3dDevice, d3dContext, frame.Get(), maxsize,
                               usage, bindFlags, cpuAccessFlags, miscFlags, forceSRGB,
                               texture, textureView );
    
#if defined(_DEBUG) || defined(PROFILE)
    if ( SUCCEEDED(hr) )
    {
        if (texture != 0 || textureView != 0)
        {
            CHAR strFileA[MAX_PATH];
            int result = WideCharToMultiByte( CP_ACP,
                                              WC_NO_BEST_FIT_CHARS,
                                              fileName,
                                              -1,
                                              strFileA,
                                              MAX_PATH,
                                              nullptr,
                                              FALSE
                               );
            if ( result > 0 )
            {
                const CHAR* pstrName = strrchr( strFileA, '\\' );
                if (!pstrName)
                {
                    pstrName = strFileA;
                }
                else
                {
                    pstrName++;
                }

                if (texture != 0 && *texture != 0)
                {
                    (*texture)->SetPrivateData( WKPDID_D3DDebugObjectName,
                                                static_cast<UINT>( strnlen_s(pstrName, MAX_PATH) ),
                                                pstrName
                                              );
                }

                if (textureView != 0 && *textureView != 0 )
                {
                    (*textureView)->SetPrivateData( WKPDID_D3DDebugObjectName,
                                                    static_cast<UINT>( strnlen_s(pstrName, MAX_PATH) ),
                                                    pstrName
                                                  );
                }
            }
        }
    }
#endif

    return hr;
}
_Use_decl_annotations_
HRESULT DirectX::CreateWICTextureFromMemoryEx( ID3D11Device* d3dDevice,
                                               ID3D11DeviceContext* d3dContext,
                                               const uint8_t* wicData,
                                               size_t wicDataSize,
                                               size_t maxsize,
                                               D3D11_USAGE usage,
                                               unsigned int bindFlags,
                                               unsigned int cpuAccessFlags,
                                               unsigned int miscFlags,
                                               bool forceSRGB,
                                               ID3D11Resource** texture,
                                               ID3D11ShaderResourceView** textureView )
{
    if ( texture )
    {
        *texture = nullptr;
    }
    if ( textureView )
    {
        *textureView = nullptr;
    }

    if (!d3dDevice || !wicData || (!texture && !textureView))
        return E_INVALIDARG;

    if ( !wicDataSize )
        return E_FAIL;

#ifdef _M_AMD64
    if ( wicDataSize > 0xFFFFFFFF )
        return HRESULT_FROM_WIN32( ERROR_FILE_TOO_LARGE );
#endif

    IWICImagingFactory* pWIC = _GetWIC();
    if ( !pWIC )
        return E_NOINTERFACE;

    // Create input stream for memory
    ScopedObject<IWICStream> stream;
    HRESULT hr = pWIC->CreateStream( &stream );
    if ( FAILED(hr) )
        return hr;

    hr = stream->InitializeFromMemory( const_cast<uint8_t*>( wicData ), static_cast<DWORD>( wicDataSize ) );
    if ( FAILED(hr) )
        return hr;

    // Initialize WIC
    ScopedObject<IWICBitmapDecoder> decoder;
    hr = pWIC->CreateDecoderFromStream( stream.Get(), 0, WICDecodeMetadataCacheOnDemand, &decoder );
    if ( FAILED(hr) )
        return hr;

    ScopedObject<IWICBitmapFrameDecode> frame;
    hr = decoder->GetFrame( 0, &frame );
    if ( FAILED(hr) )
        return hr;

    hr = CreateTextureFromWIC( d3dDevice, d3dContext, frame.Get(), maxsize,
                               usage, bindFlags, cpuAccessFlags, miscFlags, forceSRGB,
                               texture, textureView );
    if ( FAILED(hr)) 
        return hr;

    if (texture != 0 && *texture != 0)
    {
        SetDebugObjectName(*texture, "WICTextureLoader");
    }

    if (textureView != 0 && *textureView != 0)
    {
        SetDebugObjectName(*textureView, "WICTextureLoader");
    }

    return hr;
}
Beispiel #8
0
//---------------------------------------------------------------------------------
static HRESULT CreateTextureFromWIC( _In_ ID3D11Device* d3dDevice,
                                     _In_opt_ ID3D11DeviceContext* d3dContext,
                                     _In_ IWICBitmapFrameDecode *frame,
                                     _In_ size_t maxsize,
                                     _In_ D3D11_USAGE usage,
                                     _In_ unsigned int bindFlags,
                                     _In_ unsigned int cpuAccessFlags,
                                     _In_ unsigned int miscFlags,
                                     _In_ bool forceSRGB,
                                     _Out_opt_ ID3D11Resource** texture,
                                     _Out_opt_ ID3D11ShaderResourceView** textureView )
{
    UINT width, height;
    HRESULT hr = frame->GetSize( &width, &height );
    if ( FAILED(hr) )
        return hr;

    assert( width > 0 && height > 0 );

    if ( !maxsize )
    {
        // This is a bit conservative because the hardware could support larger textures than
        // the Feature Level defined minimums, but doing it this way is much easier and more
        // performant for WIC than the 'fail and retry' model used by DDSTextureLoader

        switch( d3dDevice->GetFeatureLevel() )
        {
            case D3D_FEATURE_LEVEL_9_1:
            case D3D_FEATURE_LEVEL_9_2:
                maxsize = 2048 /*D3D_FL9_1_REQ_TEXTURE2D_U_OR_V_DIMENSION*/;
                break;

            case D3D_FEATURE_LEVEL_9_3:
                maxsize = 4096 /*D3D_FL9_3_REQ_TEXTURE2D_U_OR_V_DIMENSION*/;
                break;

            case D3D_FEATURE_LEVEL_10_0:
            case D3D_FEATURE_LEVEL_10_1:
                maxsize = 8192 /*D3D10_REQ_TEXTURE2D_U_OR_V_DIMENSION*/;
                break;

            default:
                maxsize = D3D11_REQ_TEXTURE2D_U_OR_V_DIMENSION;
                break;
        }
    }

    assert( maxsize > 0 );

    UINT twidth, theight;
    if ( width > maxsize || height > maxsize )
    {
        float ar = static_cast<float>(height) / static_cast<float>(width);
        if ( width > height )
        {
            twidth = static_cast<UINT>( maxsize );
            theight = static_cast<UINT>( static_cast<float>(maxsize) * ar );
        }
        else
        {
            theight = static_cast<UINT>( maxsize );
            twidth = static_cast<UINT>( static_cast<float>(maxsize) / ar );
        }
        assert( twidth <= maxsize && theight <= maxsize );
    }
    else
    {
        twidth = width;
        theight = height;
    }

    // Determine format
    WICPixelFormatGUID pixelFormat;
    hr = frame->GetPixelFormat( &pixelFormat );
    if ( FAILED(hr) )
        return hr;

    WICPixelFormatGUID convertGUID;
    memcpy( &convertGUID, &pixelFormat, sizeof(WICPixelFormatGUID) );

    size_t bpp = 0;

    DXGI_FORMAT format = _WICToDXGI( pixelFormat );
    if ( format == DXGI_FORMAT_UNKNOWN )
    {
        if ( memcmp( &GUID_WICPixelFormat96bppRGBFixedPoint, &pixelFormat, sizeof(WICPixelFormatGUID) ) == 0 )
        {
#if (_WIN32_WINNT >= 0x0602 /*_WIN32_WINNT_WIN8*/) || defined(_WIN7_PLATFORM_UPDATE)
            if ( g_WIC2 )
            {
                memcpy( &convertGUID, &GUID_WICPixelFormat96bppRGBFloat, sizeof(WICPixelFormatGUID) );
                format = DXGI_FORMAT_R32G32B32_FLOAT;
            }
            else
#endif
            {
                memcpy( &convertGUID, &GUID_WICPixelFormat128bppRGBAFloat, sizeof(WICPixelFormatGUID) );
                format = DXGI_FORMAT_R32G32B32A32_FLOAT;
            }
        }
        else
        {
            for( size_t i=0; i < _countof(g_WICConvert); ++i )
            {
                if ( memcmp( &g_WICConvert[i].source, &pixelFormat, sizeof(WICPixelFormatGUID) ) == 0 )
                {
                    memcpy( &convertGUID, &g_WICConvert[i].target, sizeof(WICPixelFormatGUID) );

                    format = _WICToDXGI( g_WICConvert[i].target );
                    assert( format != DXGI_FORMAT_UNKNOWN );
                    bpp = _WICBitsPerPixel( convertGUID );
                    break;
                }
            }
        }

        if ( format == DXGI_FORMAT_UNKNOWN )
            return HRESULT_FROM_WIN32( ERROR_NOT_SUPPORTED );
    }
    else
    {
        bpp = _WICBitsPerPixel( pixelFormat );
    }

#if (_WIN32_WINNT >= 0x0602 /*_WIN32_WINNT_WIN8*/) || defined(_WIN7_PLATFORM_UPDATE)
    if ( (format == DXGI_FORMAT_R32G32B32_FLOAT) && d3dContext != 0 && textureView != 0 )
    {
        // Special case test for optional device support for autogen mipchains for R32G32B32_FLOAT 
        UINT fmtSupport = 0;
        hr = d3dDevice->CheckFormatSupport( DXGI_FORMAT_R32G32B32_FLOAT, &fmtSupport );
        if ( FAILED(hr) || !( fmtSupport & D3D11_FORMAT_SUPPORT_MIP_AUTOGEN ) )
        {
            // Use R32G32B32A32_FLOAT instead which is required for Feature Level 10.0 and up
            memcpy( &convertGUID, &GUID_WICPixelFormat128bppRGBAFloat, sizeof(WICPixelFormatGUID) );
            format = DXGI_FORMAT_R32G32B32A32_FLOAT;
            bpp = 128;
        }
    }
#endif

    if ( !bpp )
        return E_FAIL;

    // Handle sRGB formats
    if ( forceSRGB )
    {
        format = MakeSRGB( format );
    }
    else
    {
        ScopedObject<IWICMetadataQueryReader> metareader;
        if ( SUCCEEDED( frame->GetMetadataQueryReader( &metareader ) ) )
        {
            GUID containerFormat;
            if ( SUCCEEDED( metareader->GetContainerFormat( &containerFormat ) ) )
            {
                // Check for sRGB colorspace metadata
                bool sRGB = false;

                PROPVARIANT value;
                PropVariantInit( &value );

                if ( memcmp( &containerFormat, &GUID_ContainerFormatPng, sizeof(GUID) ) == 0 )
                {
                    // Check for sRGB chunk
                    if ( SUCCEEDED( metareader->GetMetadataByName( L"/sRGB/RenderingIntent", &value ) ) && value.vt == VT_UI1 )
                    {
                        sRGB = true;
                    }
                }
                else if ( SUCCEEDED( metareader->GetMetadataByName( L"System.Image.ColorSpace", &value ) ) && value.vt == VT_UI2 && value.uiVal == 1 )
                {
                    sRGB = true;
                }

                PropVariantClear( &value );

                if ( sRGB )
                    format = MakeSRGB( format );
            }
        }
    }

    // Verify our target format is supported by the current device
    // (handles WDDM 1.0 or WDDM 1.1 device driver cases as well as DirectX 11.0 Runtime without 16bpp format support)
    UINT support = 0;
    hr = d3dDevice->CheckFormatSupport( format, &support );
    if ( FAILED(hr) || !(support & D3D11_FORMAT_SUPPORT_TEXTURE2D) )
    {
        // Fallback to RGBA 32-bit format which is supported by all devices
        memcpy( &convertGUID, &GUID_WICPixelFormat32bppRGBA, sizeof(WICPixelFormatGUID) );
        format = DXGI_FORMAT_R8G8B8A8_UNORM;
        bpp = 32;
    }

    // Allocate temporary memory for image
    size_t rowPitch = ( twidth * bpp + 7 ) / 8;
    size_t imageSize = rowPitch * theight;

    std::unique_ptr<uint8_t[]> temp( new (std::nothrow) uint8_t[ imageSize ] );
    if (!temp)
        return E_OUTOFMEMORY;

    // Load image data
    if ( memcmp( &convertGUID, &pixelFormat, sizeof(GUID) ) == 0
         && twidth == width
         && theight == height )
    {
        // No format conversion or resize needed
        hr = frame->CopyPixels( 0, static_cast<UINT>( rowPitch ), static_cast<UINT>( imageSize ), temp.get() );  
        if ( FAILED(hr) )
            return hr;
    }
    else if ( twidth != width || theight != height )
    {
        // Resize
        IWICImagingFactory* pWIC = _GetWIC();
        if ( !pWIC )
            return E_NOINTERFACE;

        ScopedObject<IWICBitmapScaler> scaler;
        hr = pWIC->CreateBitmapScaler( &scaler );
        if ( FAILED(hr) )
            return hr;

        hr = scaler->Initialize( frame, twidth, theight, WICBitmapInterpolationModeFant );
        if ( FAILED(hr) )
            return hr;

        WICPixelFormatGUID pfScaler;
        hr = scaler->GetPixelFormat( &pfScaler );
        if ( FAILED(hr) )
            return hr;

        if ( memcmp( &convertGUID, &pfScaler, sizeof(GUID) ) == 0 )
        {
            // No format conversion needed
            hr = scaler->CopyPixels( 0, static_cast<UINT>( rowPitch ), static_cast<UINT>( imageSize ), temp.get() );  
            if ( FAILED(hr) )
                return hr;
        }
        else
        {
            ScopedObject<IWICFormatConverter> FC;
            hr = pWIC->CreateFormatConverter( &FC );
            if ( FAILED(hr) )
                return hr;

            hr = FC->Initialize( scaler.Get(), convertGUID, WICBitmapDitherTypeErrorDiffusion, 0, 0, WICBitmapPaletteTypeCustom );
            if ( FAILED(hr) )
                return hr;

            hr = FC->CopyPixels( 0, static_cast<UINT>( rowPitch ), static_cast<UINT>( imageSize ), temp.get() );  
            if ( FAILED(hr) )
                return hr;
        }
    }
    else
    {
        // Format conversion but no resize
        IWICImagingFactory* pWIC = _GetWIC();
        if ( !pWIC )
            return E_NOINTERFACE;

        ScopedObject<IWICFormatConverter> FC;
        hr = pWIC->CreateFormatConverter( &FC );
        if ( FAILED(hr) )
            return hr;

        hr = FC->Initialize( frame, convertGUID, WICBitmapDitherTypeErrorDiffusion, 0, 0, WICBitmapPaletteTypeCustom );
        if ( FAILED(hr) )
            return hr;

        hr = FC->CopyPixels( 0, static_cast<UINT>( rowPitch ), static_cast<UINT>( imageSize ), temp.get() );  
        if ( FAILED(hr) )
            return hr;
    }

    // See if format is supported for auto-gen mipmaps (varies by feature level)
    bool autogen = false;
    if ( d3dContext != 0 && textureView != 0 ) // Must have context and shader-view to auto generate mipmaps
    {
        UINT fmtSupport = 0;
        hr = d3dDevice->CheckFormatSupport( format, &fmtSupport );
        if ( SUCCEEDED(hr) && ( fmtSupport & D3D11_FORMAT_SUPPORT_MIP_AUTOGEN ) )
        {
            autogen = true;
        }
    }

    // Create texture
    D3D11_TEXTURE2D_DESC desc;
    desc.Width = twidth;
    desc.Height = theight;
    desc.MipLevels = (autogen) ? 0 : 1;
    desc.ArraySize = 1;
    desc.Format = format;
    desc.SampleDesc.Count = 1;
    desc.SampleDesc.Quality = 0;
    desc.Usage = usage;
    desc.CPUAccessFlags = cpuAccessFlags;

    if ( autogen )
    {
        desc.BindFlags = bindFlags | D3D11_BIND_RENDER_TARGET;
        desc.MiscFlags = miscFlags | D3D11_RESOURCE_MISC_GENERATE_MIPS;
    }
    else
    {
        desc.BindFlags = bindFlags;
        desc.MiscFlags = miscFlags;
    }

    D3D11_SUBRESOURCE_DATA initData;
    initData.pSysMem = temp.get();
    initData.SysMemPitch = static_cast<UINT>( rowPitch );
    initData.SysMemSlicePitch = static_cast<UINT>( imageSize );

    ID3D11Texture2D* tex = nullptr;
    hr = d3dDevice->CreateTexture2D( &desc, (autogen) ? nullptr : &initData, &tex );
    if ( SUCCEEDED(hr) && tex != 0 )
    {
        if (textureView != 0)
        {
            D3D11_SHADER_RESOURCE_VIEW_DESC SRVDesc;
            memset( &SRVDesc, 0, sizeof( SRVDesc ) );
            SRVDesc.Format = desc.Format;

            SRVDesc.ViewDimension = D3D11_SRV_DIMENSION_TEXTURE2D;
            SRVDesc.Texture2D.MipLevels = (autogen) ? -1 : 1;

            hr = d3dDevice->CreateShaderResourceView( tex, &SRVDesc, textureView );
            if ( FAILED(hr) )
            {
                tex->Release();
                return hr;
            }

            if ( autogen )
            {
                assert( d3dContext != 0 );
                d3dContext->UpdateSubresource( tex, 0, nullptr, temp.get(), static_cast<UINT>(rowPitch), static_cast<UINT>(imageSize) );
                d3dContext->GenerateMips( *textureView );
            }
        }

        if (texture != 0)
        {
            *texture = tex;
        }
        else
        {
            SetDebugObjectName(tex, "WICTextureLoader");
            tex->Release();
        }
    }

    return hr;
}
Beispiel #9
0
//-------------------------------------------------------------------------------------
_Use_decl_annotations_
HRESULT GPUCompressBC::Compress( const Image& srcImage, const Image& destImage )
{
    if ( !srcImage.pixels || !destImage.pixels )
        return E_INVALIDARG;

    if ( srcImage.width != destImage.width
         || srcImage.height != destImage.height
         || srcImage.width != m_width
         || srcImage.height != m_height
         || srcImage.format != m_srcformat
         || destImage.format != m_bcformat )
    {
        return E_UNEXPECTED;
    }

    //--- Create input texture --------------------------------------------------------
    auto pDevice = m_device.Get();
    if ( !pDevice )
        return E_POINTER;

    // We need to avoid the hardware doing additional colorspace conversion
    DXGI_FORMAT inputFormat = ( m_srcformat == DXGI_FORMAT_R8G8B8A8_UNORM_SRGB ) ? DXGI_FORMAT_R8G8B8A8_UNORM : m_srcformat;

    ScopedObject<ID3D11Texture2D> sourceTex;
    {
        D3D11_TEXTURE2D_DESC desc;
        memset( &desc, 0, sizeof(desc) );
        desc.Width = static_cast<UINT>( srcImage.width );
        desc.Height = static_cast<UINT>( srcImage.height ); 
        desc.MipLevels = 1;
        desc.ArraySize = 1;
        desc.Format = inputFormat;
        desc.SampleDesc.Count = 1;
        desc.Usage = D3D11_USAGE_DEFAULT;
        desc.BindFlags = D3D11_BIND_SHADER_RESOURCE;

        D3D11_SUBRESOURCE_DATA initData;
        initData.pSysMem = srcImage.pixels;
        initData.SysMemPitch = static_cast<DWORD>( srcImage.rowPitch );
        initData.SysMemSlicePitch = static_cast<DWORD>( srcImage.slicePitch );

        HRESULT hr = pDevice->CreateTexture2D( &desc, &initData, sourceTex.GetAddressOf() );
        if ( FAILED(hr) )
        {
            return hr;
        }
    }

    ScopedObject<ID3D11ShaderResourceView> sourceSRV;
    {
        D3D11_SHADER_RESOURCE_VIEW_DESC desc;
        memset( &desc, 0, sizeof(desc) );
        desc.Texture2D.MipLevels = 1;
        desc.Format = inputFormat;
        desc.ViewDimension = D3D11_SRV_DIMENSION_TEXTURE2D;

        HRESULT hr = pDevice->CreateShaderResourceView( sourceTex.Get(), &desc, sourceSRV.ReleaseAndGetAddressOf() );
        if ( FAILED(hr) )
        {
            return hr;
        }
    }

    //--- Compress using DirectCompute ------------------------------------------------
    bool isbc7 = false;
    switch( m_bcformat )
    {
    case DXGI_FORMAT_BC6H_TYPELESS:
    case DXGI_FORMAT_BC6H_UF16:
    case DXGI_FORMAT_BC6H_SF16:
        break;

    case DXGI_FORMAT_BC7_TYPELESS:
    case DXGI_FORMAT_BC7_UNORM:
    case DXGI_FORMAT_BC7_UNORM_SRGB:
        isbc7 = true;
        break;

    default:
        return E_UNEXPECTED;
    }

    const UINT MAX_BLOCK_BATCH = 64;

    auto pContext = m_context.Get();
    if ( !pContext )
        return E_UNEXPECTED;

    size_t xblocks = std::max<size_t>( 1, (m_width + 3) >> 2 );
    size_t yblocks = std::max<size_t>( 1, (m_height + 3) >> 2 );

    UINT num_total_blocks = static_cast<UINT>( xblocks * yblocks );
    UINT num_blocks = num_total_blocks;
    int start_block_id = 0;
    while (num_blocks > 0)
    {
        UINT n = std::min<UINT>( num_blocks, MAX_BLOCK_BATCH );
        UINT uThreadGroupCount = n;

        {
            D3D11_MAPPED_SUBRESOURCE mapped;
            HRESULT hr = pContext->Map( m_constBuffer.Get(), 0, D3D11_MAP_WRITE_DISCARD, 0, &mapped );
            if ( FAILED(hr) )
                return hr;

            ConstantsBC6HBC7 param;
            param.tex_width = static_cast<UINT>( srcImage.width );
            param.num_block_x = static_cast<UINT>( xblocks );
            param.format = m_bcformat;
            param.mode_id = 0;
            param.start_block_id = start_block_id;
            param.num_total_blocks = num_total_blocks;
            param.alpha_weight = m_alphaWeight;
            memcpy( mapped.pData, &param, sizeof( param ) );

            pContext->Unmap( m_constBuffer.Get(), 0 );
        }

        if ( isbc7 )
        {
            //--- BC7 -----------------------------------------------------------------
            ID3D11ShaderResourceView* pSRVs[] = { sourceSRV.Get(), nullptr };
            RunComputeShader( pContext, m_BC7_tryMode456CS.Get(), pSRVs, 2, m_constBuffer.Get(),
                              m_err1UAV.Get(), std::max<UINT>(uThreadGroupCount / 4, 1) );

            for ( UINT i = 0; i < 3; ++i )
            {
                static const UINT modes[] = { 1, 3, 7 };
                {
                    D3D11_MAPPED_SUBRESOURCE mapped;
                    HRESULT hr = pContext->Map( m_constBuffer.Get(), 0, D3D11_MAP_WRITE_DISCARD, 0, &mapped );
                    if ( FAILED(hr) )
                    {
                        ResetContext( pContext );
                        return hr;
                    }

                    ConstantsBC6HBC7 param;
                    param.tex_width = static_cast<UINT>( srcImage.width );
                    param.num_block_x = static_cast<UINT>( xblocks );
                    param.format = m_bcformat;
                    param.mode_id = modes[i];
                    param.start_block_id = start_block_id;
                    param.num_total_blocks = num_total_blocks;
                    param.alpha_weight = m_alphaWeight;
                    memcpy( mapped.pData, &param, sizeof( param ) );
                    pContext->Unmap( m_constBuffer.Get(), 0 );
                }

                pSRVs[1] = (i & 1) ? m_err2SRV.Get() : m_err1SRV.Get();
                RunComputeShader( pContext, m_BC7_tryMode137CS.Get(), pSRVs, 2, m_constBuffer.Get(),
                                  (i & 1) ? m_err1UAV.Get() : m_err2UAV.Get(), uThreadGroupCount );
            }               

            for ( UINT i = 0; i < 2; ++i )
            {
                static const UINT modes[] = { 0, 2 };
                {
                    D3D11_MAPPED_SUBRESOURCE mapped;
                    HRESULT hr = pContext->Map( m_constBuffer.Get(), 0, D3D11_MAP_WRITE_DISCARD, 0, &mapped );
                    if ( FAILED(hr) )
                    {
                        ResetContext( pContext );
                        return hr;
                    }

                    ConstantsBC6HBC7 param;
                    param.tex_width = static_cast<UINT>( srcImage.width );
                    param.num_block_x = static_cast<UINT>( xblocks );
                    param.format = m_bcformat;
                    param.mode_id = modes[i];
                    param.start_block_id = start_block_id;
                    param.num_total_blocks = num_total_blocks;
                    param.alpha_weight = m_alphaWeight;
                    memcpy( mapped.pData, &param, sizeof( param ) );
                    pContext->Unmap( m_constBuffer.Get(), 0 );
                }

                pSRVs[1] = (i & 1) ? m_err1SRV.Get() : m_err2SRV.Get();
                RunComputeShader( pContext, m_BC7_tryMode02CS.Get(), pSRVs, 2, m_constBuffer.Get(),
                                  (i & 1) ? m_err2UAV.Get() : m_err1UAV.Get(), uThreadGroupCount );
            }

            pSRVs[1] = m_err2SRV.Get();
            RunComputeShader( pContext, m_BC7_encodeBlockCS.Get(), pSRVs, 2, m_constBuffer.Get(),
                              m_outputUAV.Get(), std::max<UINT>(uThreadGroupCount / 4, 1) );
        }
        else
        {
            //--- BC6H ----------------------------------------------------------------
            ID3D11ShaderResourceView* pSRVs[] = { sourceSRV.Get(), nullptr };
            RunComputeShader( pContext, m_BC6H_tryModeG10CS.Get(), pSRVs, 2, m_constBuffer.Get(),
                              m_err1UAV.Get(), std::max<UINT>(uThreadGroupCount / 4, 1) );

            for ( UINT i = 0; i < 10; ++i )
            {
                {
                    D3D11_MAPPED_SUBRESOURCE mapped;
                    HRESULT hr = pContext->Map( m_constBuffer.Get(), 0, D3D11_MAP_WRITE_DISCARD, 0, &mapped );
                    if ( FAILED(hr) )
                    {
                        ResetContext( pContext );
                        return hr;
                    }

                    ConstantsBC6HBC7 param;
                    param.tex_width = static_cast<UINT>( srcImage.width );
                    param.num_block_x = static_cast<UINT>( xblocks );
                    param.format = m_bcformat;
                    param.mode_id = i;
                    param.start_block_id = start_block_id;
                    param.num_total_blocks = num_total_blocks;
                    memcpy( mapped.pData, &param, sizeof( param ) );
                    pContext->Unmap( m_constBuffer.Get(), 0 );
                }

                pSRVs[1] = (i & 1) ? m_err2SRV.Get() : m_err1SRV.Get();
                RunComputeShader( pContext, m_BC6H_tryModeLE10CS.Get(), pSRVs, 2, m_constBuffer.Get(),
                                  (i & 1) ? m_err1UAV.Get() : m_err2UAV.Get(), std::max<UINT>(uThreadGroupCount / 2, 1) );
            }               

            pSRVs[1] = m_err1SRV.Get();
            RunComputeShader( pContext, m_BC6H_encodeBlockCS.Get(), pSRVs, 2, m_constBuffer.Get(),
                              m_outputUAV.Get(), std::max<UINT>(uThreadGroupCount / 2, 1) );
        }

        start_block_id += n;
        num_blocks -= n;
    }

    ResetContext( pContext );

    //--- Copy output texture back to CPU ---------------------------------------------

    pContext->CopyResource( m_outputCPU.Get(), m_output.Get() );

    D3D11_MAPPED_SUBRESOURCE mapped;
    HRESULT hr = pContext->Map( m_outputCPU.Get(), 0, D3D11_MAP_READ, 0, &mapped );
    if ( SUCCEEDED(hr) )
    {
        const uint8_t *pSrc = reinterpret_cast<const uint8_t *>( mapped.pData );
        uint8_t *pDest = destImage.pixels;

        size_t pitch = xblocks * sizeof( BufferBC6HBC7 );

        size_t rows = std::max<size_t>( 1, ( destImage.height + 3 ) >> 2 );

        for( size_t h = 0; h < rows; ++h )
        {
            memcpy( pDest, pSrc, destImage.rowPitch );

            pSrc += pitch;
            pDest += destImage.rowPitch;
        }

        pContext->Unmap( m_outputCPU.Get(), 0 );
    }

    return hr;
}