//---------------------------------------------------------------------------------
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 >= _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 >= _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
{
ComPtr<IWICMetadataQueryReader> metareader;
if ( SUCCEEDED( frame->GetMetadataQueryReader( metareader.GetAddressOf() ) ) )
{
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;
ComPtr<IWICBitmapScaler> scaler;
hr = pWIC->CreateBitmapScaler( scaler.GetAddressOf() );
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
{
ComPtr<IWICFormatConverter> FC;
hr = pWIC->CreateFormatConverter( FC.GetAddressOf() );
if ( FAILED(hr) )
return hr;
BOOL canConvert = FALSE;
hr = FC->CanConvert( pfScaler, convertGUID, &canConvert );
if ( FAILED(hr) || !canConvert )
{
return E_UNEXPECTED;
}
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;
ComPtr<IWICFormatConverter> FC;
hr = pWIC->CreateFormatConverter( FC.GetAddressOf() );
if ( FAILED(hr) )
return hr;
BOOL canConvert = FALSE;
hr = FC->CanConvert( pixelFormat, convertGUID, &canConvert );
if ( FAILED(hr) || !canConvert )
{
return E_UNEXPECTED;
}
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;
}
//---------------------------------------------------------------------------------
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;
}
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;
}
/// <summary>
/// Load an image from a resource into a buffer
/// </summary>
/// <param name="resourceName">name of image resource to load</param>
/// <param name="resourceType">type of resource to load</param>
/// <param name="nOutputWidth">width (in pixels) of scaled output bitmap</param>
/// <param name="nOutputHeight">height (in pixels) of scaled output bitmap</param>
/// <param name="pOutputBuffer">buffer that will hold the loaded image</param>
/// <returns>S_OK on success, otherwise failure code</returns>
HRESULT CCoordinateMappingBasics::LoadResourceImage(PCWSTR resourceName, PCWSTR resourceType, UINT nOutputWidth, UINT nOutputHeight, RGBQUAD* pOutputBuffer)
{
IWICImagingFactory* pIWICFactory = NULL;
IWICBitmapDecoder* pDecoder = NULL;
IWICBitmapFrameDecode* pSource = NULL;
IWICStream* pStream = NULL;
IWICFormatConverter* pConverter = NULL;
IWICBitmapScaler* pScaler = NULL;
HRSRC imageResHandle = NULL;
HGLOBAL imageResDataHandle = NULL;
void *pImageFile = NULL;
DWORD imageFileSize = 0;
HRESULT hrCoInit = CoInitialize(NULL);
HRESULT hr = hrCoInit;
if (SUCCEEDED(hr))
{
hr = CoCreateInstance(CLSID_WICImagingFactory, NULL, CLSCTX_INPROC_SERVER, IID_IWICImagingFactory, (LPVOID*)&pIWICFactory);
}
if (SUCCEEDED(hr))
{
// Locate the resource
imageResHandle = FindResourceW(HINST_THISCOMPONENT, resourceName, resourceType);
hr = imageResHandle ? S_OK : E_FAIL;
}
if (SUCCEEDED(hr))
{
// Load the resource
imageResDataHandle = LoadResource(HINST_THISCOMPONENT, imageResHandle);
hr = imageResDataHandle ? S_OK : E_FAIL;
}
if (SUCCEEDED(hr))
{
// Lock it to get a system memory pointer.
pImageFile = LockResource(imageResDataHandle);
hr = pImageFile ? S_OK : E_FAIL;
}
if (SUCCEEDED(hr))
{
// Calculate the size.
imageFileSize = SizeofResource(HINST_THISCOMPONENT, imageResHandle);
hr = imageFileSize ? S_OK : E_FAIL;
}
if (SUCCEEDED(hr))
{
// Create a WIC stream to map onto the memory.
hr = pIWICFactory->CreateStream(&pStream);
}
if (SUCCEEDED(hr))
{
// Initialize the stream with the memory pointer and size.
hr = pStream->InitializeFromMemory(
reinterpret_cast<BYTE*>(pImageFile),
imageFileSize);
}
if (SUCCEEDED(hr))
{
// Create a decoder for the stream.
hr = pIWICFactory->CreateDecoderFromStream(
pStream,
NULL,
WICDecodeMetadataCacheOnLoad,
&pDecoder);
}
if (SUCCEEDED(hr))
{
// Create the initial frame.
hr = pDecoder->GetFrame(0, &pSource);
}
if (SUCCEEDED(hr))
{
// Convert the image format to 32bppPBGRA
// (DXGI_FORMAT_B8G8R8A8_UNORM + D2D1_ALPHA_MODE_PREMULTIPLIED).
hr = pIWICFactory->CreateFormatConverter(&pConverter);
}
if (SUCCEEDED(hr))
{
hr = pIWICFactory->CreateBitmapScaler(&pScaler);
}
if (SUCCEEDED(hr))
{
hr = pScaler->Initialize(
pSource,
nOutputWidth,
nOutputHeight,
WICBitmapInterpolationModeCubic
);
}
if (SUCCEEDED(hr))
{
hr = pConverter->Initialize(
pScaler,
GUID_WICPixelFormat32bppPBGRA,
WICBitmapDitherTypeNone,
NULL,
0.f,
WICBitmapPaletteTypeMedianCut);
}
UINT width = 0;
UINT height = 0;
if (SUCCEEDED(hr))
{
hr = pConverter->GetSize(&width, &height);
}
// make sure the image scaled correctly so the output buffer is big enough
if (SUCCEEDED(hr))
{
if ((width != nOutputWidth) || (height != nOutputHeight))
{
hr = E_FAIL;
}
}
if (SUCCEEDED(hr))
{
hr = pConverter->CopyPixels(NULL, width * sizeof(RGBQUAD), nOutputWidth * nOutputHeight * sizeof(RGBQUAD), reinterpret_cast<BYTE*>(pOutputBuffer));
}
SafeRelease(pScaler);
SafeRelease(pConverter);
SafeRelease(pSource);
SafeRelease(pDecoder);
SafeRelease(pStream);
SafeRelease(pIWICFactory);
if (SUCCEEDED(hrCoInit))
{
CoUninitialize();
}
return hr;
}
HRESULT LoadBitmapFromFile(
PCWSTR uri,
UINT dweight,
UINT dheight,
ID2D1Bitmap **bitmap
)
{
HRESULT hr = S_OK;
IWICImagingFactory* pWICFactory = NULL;
IWICBitmapDecoder* pDecoder = NULL;
IWICBitmapScaler* pScaler = NULL;
IWICBitmapFrameDecode* pSource = NULL;
IWICFormatConverter* pConverter = NULL;
hr = CoCreateInstance(
CLSID_WICImagingFactory,
NULL,
CLSCTX_INPROC_SERVER,
IID_IWICImagingFactory,
(LPVOID*)&pWICFactory);
if (SUCCEEDED(hr))
{
hr = pWICFactory->CreateDecoderFromFilename(
uri,
NULL,
GENERIC_READ,
WICDecodeMetadataCacheOnLoad,
&pDecoder);
}
if (SUCCEEDED(hr))
{
hr = pDecoder->GetFrame(0, &pSource);
}
if (SUCCEEDED(hr))
{
hr = pWICFactory->CreateFormatConverter(&pConverter);
}
if (SUCCEEDED(hr))
{
UINT oWeight, oHeight;
hr = pSource->GetSize(&oWeight, &oHeight);
if (SUCCEEDED(hr))
{
hr = pWICFactory->CreateBitmapScaler(&pScaler);
if (SUCCEEDED(hr))
{
hr = pScaler->Initialize(
pSource,
dweight,
dheight,
WICBitmapInterpolationModeCubic);
}
if (SUCCEEDED(hr))
{
hr = pConverter->Initialize(
pScaler,
GUID_WICPixelFormat32bppPBGRA,
WICBitmapDitherTypeNone,
NULL,
0.f,
WICBitmapPaletteTypeMedianCut
);
}
}
}
if (SUCCEEDED(hr))
{
hr = pRT->CreateBitmapFromWicBitmap(pConverter, bitmap);
}
Safe_Release(pWICFactory);
Safe_Release(pDecoder);
Safe_Release(pScaler);
Safe_Release(pSource);
Safe_Release(pConverter);
return hr;
}
//---------------------------------------------------------------------------------
static HRESULT TexImage2DFromWIC(GLenum target, GLint level, IWICBitmapFrameDecode *frame, bool verticalFlip)
{
UINT width, height;
HRESULT hr = frame->GetSize(&width, &height);
if (FAILED(hr))
return hr;
assert(width > 0 && height > 0);
GLint imaxsize;
glGetIntegerv(GL_MAX_TEXTURE_SIZE, &imaxsize);
assert(imaxsize > 0);
UINT maxsize = static_cast<UINT>(imaxsize);
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;
GLformattype formattype = _WICToGL(pixelFormat);
if (formattype.format == GL_NONE)
{
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));
formattype = _WICToGL(g_WICConvert[i].target);
assert(formattype.format != GL_NONE);
bpp = _WICBitsPerPixel(convertGUID);
break;
}
}
if (formattype.format == GL_NONE)
return HRESULT_FROM_WIN32(ERROR_NOT_SUPPORTED);
}
else
{
bpp = _WICBitsPerPixel(pixelFormat);
}
if (!bpp)
return E_FAIL;
// 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 = CopyPixelsHelper(frame, verticalFlip, 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;
ComPtr<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)
{
hr = CopyPixelsHelper(scaler.Get(), verticalFlip, 0, static_cast<UINT>(rowPitch), static_cast<UINT>(imageSize), temp.get());
if (FAILED(hr))
return hr;
}
else
{
ComPtr<IWICFormatConverter> FC;
hr = pWIC->CreateFormatConverter(&FC);
if (FAILED(hr))
return hr;
BOOL canConvert = FALSE;
hr = FC->CanConvert(pfScaler, convertGUID, &canConvert);
if (FAILED(hr) || !canConvert)
{
return E_UNEXPECTED;
}
hr = FC->Initialize(scaler.Get(), convertGUID, WICBitmapDitherTypeErrorDiffusion, 0, 0, WICBitmapPaletteTypeCustom);
if (FAILED(hr))
return hr;
hr = CopyPixelsHelper(FC.Get(), verticalFlip, 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;
ComPtr<IWICFormatConverter> FC;
hr = pWIC->CreateFormatConverter(&FC);
if (FAILED(hr))
return hr;
BOOL canConvert = FALSE;
hr = FC->CanConvert(pixelFormat, convertGUID, &canConvert);
if (FAILED(hr) || !canConvert)
{
return E_UNEXPECTED;
}
hr = FC->Initialize(frame, convertGUID, WICBitmapDitherTypeErrorDiffusion, 0, 0, WICBitmapPaletteTypeCustom);
if (FAILED(hr))
return hr;
hr = CopyPixelsHelper(FC.Get(), verticalFlip, 0, static_cast<UINT>(rowPitch), static_cast<UINT>(imageSize), temp.get());
if (FAILED(hr))
return hr;
}
glTexImage2D(target, level, formattype.format, twidth, theight, 0, formattype.format, formattype.type, temp.get());
if (glGetError() != GL_NO_ERROR)
{
return E_FAIL;
}
return hr;
}
bool Image::Initialize(wchar_t *filename, Graphics *graphics)
{
std::ifstream file;
IWICImagingFactory *pWIC;
IWICStream *stream;
IWICBitmapDecoder *decoder;
IWICBitmapFrameDecode *frame;
unsigned int width, height, twidth, theight, maxsize, bpp, i, support, rowPitch, imageSize;
float ratio;
WICPixelFormatGUID pixelFormat;
DXGI_FORMAT format;
IWICComponentInfo *cinfo;
IWICPixelFormatInfo *pfinfo;
IWICBitmapScaler *scaler;
bool autogen = false;
D3D11_TEXTURE2D_DESC desc;
D3D11_SUBRESOURCE_DATA initData;
D3D11_SHADER_RESOURCE_VIEW_DESC SRVDesc;
file.open(filename, std::ios::in | std::ios::binary | std::ios::ate);
if(!file.is_open()) return false;
m_size = file.tellg();
file.seekg(0, std::ios::beg);
m_bytes = new unsigned char [m_size];
file.read((char *)m_bytes, m_size);
file.close();
RETURN_FAIL( CoCreateInstance( CLSID_WICImagingFactory, nullptr, CLSCTX_INPROC_SERVER, __uuidof(IWICImagingFactory), (LPVOID*)&pWIC ) );
RETURN_FAIL( pWIC->CreateStream( &stream ) );
RETURN_FAIL( stream->InitializeFromMemory( m_bytes, m_size ) );
RETURN_FAIL( pWIC->CreateDecoderFromStream( stream, 0, WICDecodeMetadataCacheOnDemand, &decoder ) );
RETURN_FAIL( decoder->GetFrame( 0, &frame ) );
RETURN_FAIL( frame->GetSize( &width, &height ) );
SAFE_RELEASE( stream );
SAFE_RELEASE( decoder );
if( width <= 0 || height <= 0 ) return false;
maxsize = D3D11_REQ_TEXTURE2D_U_OR_V_DIMENSION;
if( width > maxsize || height > maxsize )
{
ratio = static_cast<float>(height) / static_cast<float>(width);
if(width > height)
{
twidth = maxsize;
theight = static_cast<unsigned int>( static_cast<float>(maxsize) * ratio );
}
else
{
theight = maxsize;
twidth = static_cast<unsigned int>( static_cast<float>(maxsize) / ratio );
}
}
else
{
twidth = width;
theight = height;
}
RETURN_FAIL( frame->GetPixelFormat( &pixelFormat ) );
format = DXGI_FORMAT_UNKNOWN;
for( i = 0; i < _countof(g_WICFormats); ++i )
{
if( memcmp( &g_WICFormats[i].wic, &pixelFormat, sizeof(GUID) ) == 0 )
{
format = g_WICFormats[i].dxgi;
break;
}
}
RETURN_FAIL( pWIC->CreateComponentInfo( pixelFormat, &cinfo ) );
RETURN_FAIL( cinfo->QueryInterface( __uuidof(IWICPixelFormatInfo), (LPVOID*)&pfinfo ) );
RETURN_FAIL( pfinfo->GetBitsPerPixel( &bpp ) );
SAFE_RELEASE( cinfo );
SAFE_RELEASE( pfinfo );
RETURN_FAIL( graphics->GetDevice()->CheckFormatSupport( format, &support ) );
if( !(support & D3D11_FORMAT_SUPPORT_TEXTURE2D) ) return false;
rowPitch = ( twidth * bpp + 7 ) / 8;
imageSize = rowPitch * theight;
std::unique_ptr<uint8_t[]> temp( new (std::nothrow) uint8_t[ imageSize ] );
if( !temp ) return false;
if( twidth == width && theight == height )
{
RETURN_FAIL( frame->CopyPixels( 0, rowPitch, imageSize, temp.get() ) );
}
else
{
RETURN_FAIL( pWIC->CreateBitmapScaler( &scaler ) );
RETURN_FAIL( scaler->Initialize( frame, twidth, theight, WICBitmapInterpolationModeFant ) );
RETURN_FAIL( scaler->CopyPixels( 0, rowPitch, imageSize, temp.get() ) );
SAFE_RELEASE( scaler );
}
SAFE_RELEASE( frame );
if( support & D3D11_FORMAT_SUPPORT_MIP_AUTOGEN )
{
autogen = true;
}
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.CPUAccessFlags = 0;
desc.BindFlags = (autogen) ? D3D11_BIND_SHADER_RESOURCE | D3D11_BIND_RENDER_TARGET : D3D11_BIND_SHADER_RESOURCE;
desc.MiscFlags = (autogen) ? D3D11_RESOURCE_MISC_GENERATE_MIPS : 0;
initData.pSysMem = temp.get();
initData.SysMemPitch = rowPitch;
initData.SysMemSlicePitch = imageSize;
RETURN_FAIL( graphics->GetDevice()->CreateTexture2D( &desc, (autogen) ? nullptr : &initData, &m_texture2D ) );
//ZeroMemory( &SRVDesc, sizeof( SRVDesc ) );
memset( &SRVDesc, 0, sizeof( SRVDesc ) );
SRVDesc.Format = desc.Format;
SRVDesc.ViewDimension = D3D11_SRV_DIMENSION_TEXTURE2D;
SRVDesc.Texture2D.MipLevels = (autogen) ? -1 : 1;
RETURN_FAIL( graphics->GetDevice()->CreateShaderResourceView( m_texture2D, &SRVDesc, &m_shaderResourceView ) );
if( autogen )
{
graphics->GetContext()->UpdateSubresource( m_texture2D, 0, nullptr, temp.get(), rowPitch, imageSize );
graphics->GetContext()->GenerateMips( m_shaderResourceView );
}
SAFE_RELEASE(pWIC);
}
/// <summary>
/// Load an image from a resource into a buffer
/// </summary>
/// <param name="resourceName">name of image resource to load</param>
/// <param name="resourceType">type of resource to load</param>
/// <param name="cOutputBuffer">size of output buffer, in bytes</param>
/// <param name="outputBuffer">buffer that will hold the loaded image</param>
/// <returns>S_OK on success, otherwise failure code</returns>
HRESULT KinectEasyGrabber::LoadResourceImage(
PCWSTR resourceName,
PCWSTR resourceType,
DWORD cOutputBuffer,
BYTE* outputBuffer
)
{
HRESULT hr = S_OK;
IWICImagingFactory* pIWICFactory = NULL;
IWICBitmapDecoder* pDecoder = NULL;
IWICBitmapFrameDecode* pSource = NULL;
IWICStream* pStream = NULL;
IWICFormatConverter* pConverter = NULL;
IWICBitmapScaler* pScaler = NULL;
HRSRC imageResHandle = NULL;
HGLOBAL imageResDataHandle = NULL;
void *pImageFile = NULL;
DWORD imageFileSize = 0;
hr = CoCreateInstance(CLSID_WICImagingFactory, NULL, CLSCTX_INPROC_SERVER, IID_IWICImagingFactory, (LPVOID*)&pIWICFactory);
if ( FAILED(hr) ) return hr;
// Locate the resource.
imageResHandle = FindResourceW(HINST_THISCOMPONENT, resourceName, resourceType);
hr = imageResHandle ? S_OK : E_FAIL;
if (SUCCEEDED(hr))
{
// Load the resource.
imageResDataHandle = LoadResource(HINST_THISCOMPONENT, imageResHandle);
hr = imageResDataHandle ? S_OK : E_FAIL;
}
if (SUCCEEDED(hr))
{
// Lock it to get a system memory pointer.
pImageFile = LockResource(imageResDataHandle);
hr = pImageFile ? S_OK : E_FAIL;
}
if (SUCCEEDED(hr))
{
// Calculate the size.
imageFileSize = SizeofResource(HINST_THISCOMPONENT, imageResHandle);
hr = imageFileSize ? S_OK : E_FAIL;
}
if (SUCCEEDED(hr))
{
// Create a WIC stream to map onto the memory.
hr = pIWICFactory->CreateStream(&pStream);
}
if (SUCCEEDED(hr))
{
// Initialize the stream with the memory pointer and size.
hr = pStream->InitializeFromMemory(
reinterpret_cast<BYTE*>(pImageFile),
imageFileSize
);
}
if (SUCCEEDED(hr))
{
// Create a decoder for the stream.
hr = pIWICFactory->CreateDecoderFromStream(
pStream,
NULL,
WICDecodeMetadataCacheOnLoad,
&pDecoder
);
}
if (SUCCEEDED(hr))
{
// Create the initial frame.
hr = pDecoder->GetFrame(0, &pSource);
}
if (SUCCEEDED(hr))
{
// Convert the image format to 32bppPBGRA
// (DXGI_FORMAT_B8G8R8A8_UNORM + D2D1_ALPHA_MODE_PREMULTIPLIED).
hr = pIWICFactory->CreateFormatConverter(&pConverter);
}
if (SUCCEEDED(hr))
{
hr = pIWICFactory->CreateBitmapScaler(&pScaler);
}
if (SUCCEEDED(hr))
{
hr = pScaler->Initialize(
pSource,
m_colorWidth,
m_colorHeight,
WICBitmapInterpolationModeCubic
);
}
if (SUCCEEDED(hr))
{
hr = pConverter->Initialize(
pScaler,
GUID_WICPixelFormat32bppPBGRA,
WICBitmapDitherTypeNone,
NULL,
0.f,
WICBitmapPaletteTypeMedianCut
);
}
UINT width = 0;
UINT height = 0;
if (SUCCEEDED(hr))
{
hr = pConverter->GetSize(&width, &height);
}
// make sure the output buffer is large enough
if (SUCCEEDED(hr))
{
if ( width*height*cBytesPerPixel > cOutputBuffer )
{
hr = E_FAIL;
}
}
if (SUCCEEDED(hr))
{
hr = pConverter->CopyPixels(NULL, width*cBytesPerPixel, cOutputBuffer, outputBuffer);
}
SafeRelease(pScaler);
SafeRelease(pConverter);
SafeRelease(pSource);
SafeRelease(pDecoder);
SafeRelease(pStream);
SafeRelease(pIWICFactory);
return hr;
}
