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Added WIC_FLAGS_DEFAULT_SRGB flag (#178)

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Chuck Walbourn 2020-05-27 02:29:55 -07:00 committed by GitHub
parent 07c0aaa045
commit 21f7e28b80
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4 changed files with 73 additions and 44 deletions
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7
DirectXTex/DirectXTex.h
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@ -1,6 +1,6 @@
//------------------------------------------------------------------------------------- //-------------------------------------------------------------------------------------
// DirectXTex.h // DirectXTex.h
// //
// DirectX Texture Library // DirectX Texture Library
// //
// Copyright (c) Microsoft Corporation. All rights reserved. // Copyright (c) Microsoft Corporation. All rights reserved.
@ -146,7 +146,7 @@ namespace DirectX
// Assume pitch is DWORD aligned instead of BYTE aligned (used by some legacy DDS files) // Assume pitch is DWORD aligned instead of BYTE aligned (used by some legacy DDS files)
DDS_FLAGS_NO_LEGACY_EXPANSION = 0x2, DDS_FLAGS_NO_LEGACY_EXPANSION = 0x2,
// Do not implicitly convert legacy formats that result in larger pixel sizes (24 bpp, 3:3:2, A8L8, A4L4, P8, A8P8) // Do not implicitly convert legacy formats that result in larger pixel sizes (24 bpp, 3:3:2, A8L8, A4L4, P8, A8P8)
DDS_FLAGS_NO_R10B10G10A2_FIXUP = 0x4, DDS_FLAGS_NO_R10B10G10A2_FIXUP = 0x4,
// Do not use work-around for long-standing D3DX DDS file format issue which reversed the 10:10:10:2 color order masks // Do not use work-around for long-standing D3DX DDS file format issue which reversed the 10:10:10:2 color order masks
@ -202,6 +202,9 @@ namespace DirectX
WIC_FLAGS_FORCE_LINEAR = 0x80, WIC_FLAGS_FORCE_LINEAR = 0x80,
// Writes linear gamma metadata into the file reguardless of format // Writes linear gamma metadata into the file reguardless of format
WIC_FLAGS_DEFAULT_SRGB = 0x100,
// If no colorspace is specified, assume sRGB
WIC_FLAGS_DITHER = 0x10000, WIC_FLAGS_DITHER = 0x10000,
// Use ordered 4x4 dithering for any required conversions // Use ordered 4x4 dithering for any required conversions

88
DirectXTex/DirectXTexWIC.cpp
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@ -1,6 +1,6 @@
//------------------------------------------------------------------------------------- //-------------------------------------------------------------------------------------
// DirectXTexWIC.cpp // DirectXTexWIC.cpp
// //
// DirectX Texture Library - WIC-based file reader/writer // DirectX Texture Library - WIC-based file reader/writer
// //
// Copyright (c) Microsoft Corporation. All rights reserved. // Copyright (c) Microsoft Corporation. All rights reserved.
@ -89,24 +89,24 @@ namespace
// Directly support the formats listed in XnaTexUtil::g_WICFormats, so no conversion required // Directly support the formats listed in XnaTexUtil::g_WICFormats, so no conversion required
// Note target GUID in this conversion table must be one of those directly supported formats. // Note target GUID in this conversion table must be one of those directly supported formats.
{ GUID_WICPixelFormat1bppIndexed, GUID_WICPixelFormat32bppRGBA, TEX_ALPHA_MODE_UNKNOWN }, // DXGI_FORMAT_R8G8B8A8_UNORM { GUID_WICPixelFormat1bppIndexed, GUID_WICPixelFormat32bppRGBA, TEX_ALPHA_MODE_UNKNOWN }, // DXGI_FORMAT_R8G8B8A8_UNORM
{ GUID_WICPixelFormat2bppIndexed, GUID_WICPixelFormat32bppRGBA, TEX_ALPHA_MODE_UNKNOWN }, // DXGI_FORMAT_R8G8B8A8_UNORM { GUID_WICPixelFormat2bppIndexed, GUID_WICPixelFormat32bppRGBA, TEX_ALPHA_MODE_UNKNOWN }, // DXGI_FORMAT_R8G8B8A8_UNORM
{ GUID_WICPixelFormat4bppIndexed, GUID_WICPixelFormat32bppRGBA, TEX_ALPHA_MODE_UNKNOWN }, // DXGI_FORMAT_R8G8B8A8_UNORM { GUID_WICPixelFormat4bppIndexed, GUID_WICPixelFormat32bppRGBA, TEX_ALPHA_MODE_UNKNOWN }, // DXGI_FORMAT_R8G8B8A8_UNORM
{ GUID_WICPixelFormat8bppIndexed, GUID_WICPixelFormat32bppRGBA, TEX_ALPHA_MODE_UNKNOWN }, // DXGI_FORMAT_R8G8B8A8_UNORM { GUID_WICPixelFormat8bppIndexed, GUID_WICPixelFormat32bppRGBA, TEX_ALPHA_MODE_UNKNOWN }, // DXGI_FORMAT_R8G8B8A8_UNORM
{ GUID_WICPixelFormat2bppGray, GUID_WICPixelFormat8bppGray, TEX_ALPHA_MODE_UNKNOWN }, // DXGI_FORMAT_R8_UNORM { GUID_WICPixelFormat2bppGray, GUID_WICPixelFormat8bppGray, TEX_ALPHA_MODE_UNKNOWN }, // DXGI_FORMAT_R8_UNORM
{ GUID_WICPixelFormat4bppGray, GUID_WICPixelFormat8bppGray, TEX_ALPHA_MODE_UNKNOWN }, // DXGI_FORMAT_R8_UNORM { GUID_WICPixelFormat4bppGray, GUID_WICPixelFormat8bppGray, TEX_ALPHA_MODE_UNKNOWN }, // DXGI_FORMAT_R8_UNORM
{ GUID_WICPixelFormat16bppGrayFixedPoint, GUID_WICPixelFormat16bppGrayHalf, TEX_ALPHA_MODE_UNKNOWN }, // DXGI_FORMAT_R16_FLOAT { GUID_WICPixelFormat16bppGrayFixedPoint, GUID_WICPixelFormat16bppGrayHalf, TEX_ALPHA_MODE_UNKNOWN }, // DXGI_FORMAT_R16_FLOAT
{ GUID_WICPixelFormat32bppGrayFixedPoint, GUID_WICPixelFormat32bppGrayFloat, TEX_ALPHA_MODE_UNKNOWN }, // DXGI_FORMAT_R32_FLOAT { GUID_WICPixelFormat32bppGrayFixedPoint, GUID_WICPixelFormat32bppGrayFloat, TEX_ALPHA_MODE_UNKNOWN }, // DXGI_FORMAT_R32_FLOAT
{ GUID_WICPixelFormat16bppBGR555, GUID_WICPixelFormat16bppBGRA5551, TEX_ALPHA_MODE_OPAQUE }, // DXGI_FORMAT_B5G5R5A1_UNORM { GUID_WICPixelFormat16bppBGR555, GUID_WICPixelFormat16bppBGRA5551, TEX_ALPHA_MODE_OPAQUE }, // DXGI_FORMAT_B5G5R5A1_UNORM
{ GUID_WICPixelFormat32bppBGR101010, GUID_WICPixelFormat32bppRGBA1010102, TEX_ALPHA_MODE_OPAQUE }, // DXGI_FORMAT_R10G10B10A2_UNORM { GUID_WICPixelFormat32bppBGR101010, GUID_WICPixelFormat32bppRGBA1010102, TEX_ALPHA_MODE_OPAQUE }, // DXGI_FORMAT_R10G10B10A2_UNORM
{ GUID_WICPixelFormat24bppBGR, GUID_WICPixelFormat32bppRGBA, TEX_ALPHA_MODE_OPAQUE }, // DXGI_FORMAT_R8G8B8A8_UNORM { GUID_WICPixelFormat24bppBGR, GUID_WICPixelFormat32bppRGBA, TEX_ALPHA_MODE_OPAQUE }, // DXGI_FORMAT_R8G8B8A8_UNORM
{ GUID_WICPixelFormat24bppRGB, GUID_WICPixelFormat32bppRGBA, TEX_ALPHA_MODE_OPAQUE }, // DXGI_FORMAT_R8G8B8A8_UNORM { GUID_WICPixelFormat24bppRGB, GUID_WICPixelFormat32bppRGBA, TEX_ALPHA_MODE_OPAQUE }, // DXGI_FORMAT_R8G8B8A8_UNORM
{ GUID_WICPixelFormat32bppPBGRA, GUID_WICPixelFormat32bppRGBA, TEX_ALPHA_MODE_UNKNOWN }, // DXGI_FORMAT_R8G8B8A8_UNORM { GUID_WICPixelFormat32bppPBGRA, GUID_WICPixelFormat32bppRGBA, TEX_ALPHA_MODE_UNKNOWN }, // DXGI_FORMAT_R8G8B8A8_UNORM
{ GUID_WICPixelFormat32bppPRGBA, GUID_WICPixelFormat32bppRGBA, TEX_ALPHA_MODE_UNKNOWN }, // DXGI_FORMAT_R8G8B8A8_UNORM { GUID_WICPixelFormat32bppPRGBA, GUID_WICPixelFormat32bppRGBA, TEX_ALPHA_MODE_UNKNOWN }, // DXGI_FORMAT_R8G8B8A8_UNORM
{ GUID_WICPixelFormat48bppRGB, GUID_WICPixelFormat64bppRGBA, TEX_ALPHA_MODE_OPAQUE }, // DXGI_FORMAT_R16G16B16A16_UNORM { GUID_WICPixelFormat48bppRGB, GUID_WICPixelFormat64bppRGBA, TEX_ALPHA_MODE_OPAQUE }, // DXGI_FORMAT_R16G16B16A16_UNORM
{ GUID_WICPixelFormat48bppBGR, GUID_WICPixelFormat64bppRGBA, TEX_ALPHA_MODE_OPAQUE }, // DXGI_FORMAT_R16G16B16A16_UNORM { GUID_WICPixelFormat48bppBGR, GUID_WICPixelFormat64bppRGBA, TEX_ALPHA_MODE_OPAQUE }, // DXGI_FORMAT_R16G16B16A16_UNORM
@ -114,19 +114,19 @@ namespace
{ GUID_WICPixelFormat64bppPRGBA, GUID_WICPixelFormat64bppRGBA, TEX_ALPHA_MODE_UNKNOWN }, // DXGI_FORMAT_R16G16B16A16_UNORM { GUID_WICPixelFormat64bppPRGBA, GUID_WICPixelFormat64bppRGBA, TEX_ALPHA_MODE_UNKNOWN }, // DXGI_FORMAT_R16G16B16A16_UNORM
{ GUID_WICPixelFormat64bppPBGRA, GUID_WICPixelFormat64bppRGBA, TEX_ALPHA_MODE_UNKNOWN }, // DXGI_FORMAT_R16G16B16A16_UNORM { GUID_WICPixelFormat64bppPBGRA, GUID_WICPixelFormat64bppRGBA, TEX_ALPHA_MODE_UNKNOWN }, // DXGI_FORMAT_R16G16B16A16_UNORM
{ GUID_WICPixelFormat48bppRGBFixedPoint, GUID_WICPixelFormat64bppRGBAHalf, TEX_ALPHA_MODE_OPAQUE }, // DXGI_FORMAT_R16G16B16A16_FLOAT { GUID_WICPixelFormat48bppRGBFixedPoint, GUID_WICPixelFormat64bppRGBAHalf, TEX_ALPHA_MODE_OPAQUE }, // DXGI_FORMAT_R16G16B16A16_FLOAT
{ GUID_WICPixelFormat48bppBGRFixedPoint, GUID_WICPixelFormat64bppRGBAHalf, TEX_ALPHA_MODE_OPAQUE }, // DXGI_FORMAT_R16G16B16A16_FLOAT { GUID_WICPixelFormat48bppBGRFixedPoint, GUID_WICPixelFormat64bppRGBAHalf, TEX_ALPHA_MODE_OPAQUE }, // DXGI_FORMAT_R16G16B16A16_FLOAT
{ GUID_WICPixelFormat64bppRGBAFixedPoint, GUID_WICPixelFormat64bppRGBAHalf, TEX_ALPHA_MODE_UNKNOWN }, // DXGI_FORMAT_R16G16B16A16_FLOAT { GUID_WICPixelFormat64bppRGBAFixedPoint, GUID_WICPixelFormat64bppRGBAHalf, TEX_ALPHA_MODE_UNKNOWN }, // DXGI_FORMAT_R16G16B16A16_FLOAT
{ GUID_WICPixelFormat64bppBGRAFixedPoint, GUID_WICPixelFormat64bppRGBAHalf, TEX_ALPHA_MODE_UNKNOWN }, // DXGI_FORMAT_R16G16B16A16_FLOAT { GUID_WICPixelFormat64bppBGRAFixedPoint, GUID_WICPixelFormat64bppRGBAHalf, TEX_ALPHA_MODE_UNKNOWN }, // DXGI_FORMAT_R16G16B16A16_FLOAT
{ GUID_WICPixelFormat64bppRGBFixedPoint, GUID_WICPixelFormat64bppRGBAHalf, TEX_ALPHA_MODE_OPAQUE }, // DXGI_FORMAT_R16G16B16A16_FLOAT { GUID_WICPixelFormat64bppRGBFixedPoint, GUID_WICPixelFormat64bppRGBAHalf, TEX_ALPHA_MODE_OPAQUE }, // DXGI_FORMAT_R16G16B16A16_FLOAT
{ GUID_WICPixelFormat64bppRGBHalf, GUID_WICPixelFormat64bppRGBAHalf, TEX_ALPHA_MODE_OPAQUE }, // DXGI_FORMAT_R16G16B16A16_FLOAT { GUID_WICPixelFormat64bppRGBHalf, GUID_WICPixelFormat64bppRGBAHalf, TEX_ALPHA_MODE_OPAQUE }, // DXGI_FORMAT_R16G16B16A16_FLOAT
{ GUID_WICPixelFormat48bppRGBHalf, GUID_WICPixelFormat64bppRGBAHalf, TEX_ALPHA_MODE_OPAQUE }, // DXGI_FORMAT_R16G16B16A16_FLOAT { GUID_WICPixelFormat48bppRGBHalf, GUID_WICPixelFormat64bppRGBAHalf, TEX_ALPHA_MODE_OPAQUE }, // DXGI_FORMAT_R16G16B16A16_FLOAT
{ GUID_WICPixelFormat128bppPRGBAFloat, GUID_WICPixelFormat128bppRGBAFloat, TEX_ALPHA_MODE_UNKNOWN }, // DXGI_FORMAT_R32G32B32A32_FLOAT { GUID_WICPixelFormat128bppPRGBAFloat, GUID_WICPixelFormat128bppRGBAFloat, TEX_ALPHA_MODE_UNKNOWN }, // DXGI_FORMAT_R32G32B32A32_FLOAT
{ GUID_WICPixelFormat128bppRGBFloat, GUID_WICPixelFormat128bppRGBAFloat, TEX_ALPHA_MODE_OPAQUE }, // DXGI_FORMAT_R32G32B32A32_FLOAT { GUID_WICPixelFormat128bppRGBFloat, GUID_WICPixelFormat128bppRGBAFloat, TEX_ALPHA_MODE_OPAQUE }, // DXGI_FORMAT_R32G32B32A32_FLOAT
{ GUID_WICPixelFormat128bppRGBAFixedPoint, GUID_WICPixelFormat128bppRGBAFloat, TEX_ALPHA_MODE_UNKNOWN }, // DXGI_FORMAT_R32G32B32A32_FLOAT { GUID_WICPixelFormat128bppRGBAFixedPoint, GUID_WICPixelFormat128bppRGBAFloat, TEX_ALPHA_MODE_UNKNOWN }, // DXGI_FORMAT_R32G32B32A32_FLOAT
{ GUID_WICPixelFormat128bppRGBFixedPoint, GUID_WICPixelFormat128bppRGBAFloat, TEX_ALPHA_MODE_OPAQUE }, // DXGI_FORMAT_R32G32B32A32_FLOAT { GUID_WICPixelFormat128bppRGBFixedPoint, GUID_WICPixelFormat128bppRGBAFloat, TEX_ALPHA_MODE_OPAQUE }, // DXGI_FORMAT_R32G32B32A32_FLOAT
{ GUID_WICPixelFormat32bppRGBE, GUID_WICPixelFormat128bppRGBAFloat, TEX_ALPHA_MODE_OPAQUE }, // DXGI_FORMAT_R32G32B32A32_FLOAT { GUID_WICPixelFormat32bppRGBE, GUID_WICPixelFormat128bppRGBAFloat, TEX_ALPHA_MODE_OPAQUE }, // DXGI_FORMAT_R32G32B32A32_FLOAT
{ GUID_WICPixelFormat32bppCMYK, GUID_WICPixelFormat32bppRGBA, TEX_ALPHA_MODE_OPAQUE }, // DXGI_FORMAT_R8G8B8A8_UNORM { GUID_WICPixelFormat32bppCMYK, GUID_WICPixelFormat32bppRGBA, TEX_ALPHA_MODE_OPAQUE }, // DXGI_FORMAT_R8G8B8A8_UNORM
{ GUID_WICPixelFormat64bppCMYK, GUID_WICPixelFormat64bppRGBA, TEX_ALPHA_MODE_OPAQUE }, // DXGI_FORMAT_R16G16B16A16_UNORM { GUID_WICPixelFormat64bppCMYK, GUID_WICPixelFormat64bppRGBA, TEX_ALPHA_MODE_OPAQUE }, // DXGI_FORMAT_R16G16B16A16_UNORM
@ -136,7 +136,7 @@ namespace
#if (_WIN32_WINNT >= _WIN32_WINNT_WIN8) || defined(_WIN7_PLATFORM_UPDATE) #if (_WIN32_WINNT >= _WIN32_WINNT_WIN8) || defined(_WIN7_PLATFORM_UPDATE)
{ GUID_WICPixelFormat32bppRGB, GUID_WICPixelFormat32bppRGBA, TEX_ALPHA_MODE_OPAQUE }, // DXGI_FORMAT_R8G8B8A8_UNORM { GUID_WICPixelFormat32bppRGB, GUID_WICPixelFormat32bppRGBA, TEX_ALPHA_MODE_OPAQUE }, // DXGI_FORMAT_R8G8B8A8_UNORM
{ GUID_WICPixelFormat64bppRGB, GUID_WICPixelFormat64bppRGBA, TEX_ALPHA_MODE_OPAQUE }, // DXGI_FORMAT_R16G16B16A16_UNORM { GUID_WICPixelFormat64bppRGB, GUID_WICPixelFormat64bppRGBA, TEX_ALPHA_MODE_OPAQUE }, // DXGI_FORMAT_R16G16B16A16_UNORM
{ GUID_WICPixelFormat64bppPRGBAHalf, GUID_WICPixelFormat64bppRGBAHalf, TEX_ALPHA_MODE_UNKNOWN }, // DXGI_FORMAT_R16G16B16A16_FLOAT { GUID_WICPixelFormat64bppPRGBAHalf, GUID_WICPixelFormat64bppRGBAHalf, TEX_ALPHA_MODE_UNKNOWN }, // DXGI_FORMAT_R16G16B16A16_FLOAT
#endif #endif
// We don't support n-channel formats // We don't support n-channel formats
@ -318,33 +318,53 @@ namespace
PROPVARIANT value; PROPVARIANT value;
PropVariantInit(&value); PropVariantInit(&value);
// Check for colorspace chunks
if (memcmp(&containerFormat, &GUID_ContainerFormatPng, sizeof(GUID)) == 0) if (memcmp(&containerFormat, &GUID_ContainerFormatPng, sizeof(GUID)) == 0)
{ {
// Check for sRGB chunk
if (SUCCEEDED(metareader->GetMetadataByName(L"/sRGB/RenderingIntent", &value)) && value.vt == VT_UI1) if (SUCCEEDED(metareader->GetMetadataByName(L"/sRGB/RenderingIntent", &value)) && value.vt == VT_UI1)
{ {
sRGB = true; sRGB = true;
} }
else if (SUCCEEDED(metareader->GetMetadataByName(L"/gAMA/ImageGamma", &value)) && value.vt == VT_UI4)
{
sRGB = (value.uintVal == 45455);
}
else
{
sRGB = (flags & WIC_FLAGS_DEFAULT_SRGB) != 0;
}
} }
#if defined(_XBOX_ONE) && defined(_TITLE) #if defined(_XBOX_ONE) && defined(_TITLE)
else if (memcmp(&containerFormat, &GUID_ContainerFormatJpeg, sizeof(GUID)) == 0) else if (memcmp(&containerFormat, &GUID_ContainerFormatJpeg, sizeof(GUID)) == 0)
{ {
if (SUCCEEDED(metareader->GetMetadataByName(L"/app1/ifd/exif/{ushort=40961}", &value)) && value.vt == VT_UI2 && value.uiVal == 1) if (SUCCEEDED(metareader->GetMetadataByName(L"/app1/ifd/exif/{ushort=40961}", &value)) && value.vt == VT_UI2)
{ {
sRGB = true; sRGB = (value.uiVal == 1);
}
else
{
sRGB = (flags & WIC_FLAGS_DEFAULT_SRGB) != 0;
} }
} }
else if (memcmp(&containerFormat, &GUID_ContainerFormatTiff, sizeof(GUID)) == 0) else if (memcmp(&containerFormat, &GUID_ContainerFormatTiff, sizeof(GUID)) == 0)
{ {
if (SUCCEEDED(metareader->GetMetadataByName(L"/ifd/exif/{ushort=40961}", &value)) && value.vt == VT_UI2 && value.uiVal == 1) if (SUCCEEDED(metareader->GetMetadataByName(L"/ifd/exif/{ushort=40961}", &value)) && value.vt == VT_UI2)
{ {
sRGB = true; sRGB = (value.uiVal == 1);
}
else
{
sRGB = (flags & WIC_FLAGS_DEFAULT_SRGB) != 0;
} }
} }
#else #else
else if (SUCCEEDED(metareader->GetMetadataByName(L"System.Image.ColorSpace", &value)) && value.vt == VT_UI2 && value.uiVal == 1) else if (SUCCEEDED(metareader->GetMetadataByName(L"System.Image.ColorSpace", &value)) && value.vt == VT_UI2)
{ {
sRGB = true; sRGB = (value.uiVal == 1);
}
else
{
sRGB = (flags & WIC_FLAGS_DEFAULT_SRGB) != 0;
} }
#endif #endif

11
WICTextureLoader/WICTextureLoader11.cpp
View File

@ -518,23 +518,26 @@ namespace
GUID containerFormat; GUID containerFormat;
if (SUCCEEDED(metareader->GetContainerFormat(&containerFormat))) if (SUCCEEDED(metareader->GetContainerFormat(&containerFormat)))
{ {
// Check for sRGB colorspace metadata
bool sRGB = false; bool sRGB = false;
PROPVARIANT value; PROPVARIANT value;
PropVariantInit(&value); PropVariantInit(&value);
// Check for colorspace chunks
if (memcmp(&containerFormat, &GUID_ContainerFormatPng, sizeof(GUID)) == 0) if (memcmp(&containerFormat, &GUID_ContainerFormatPng, sizeof(GUID)) == 0)
{ {
// Check for sRGB chunk
if (SUCCEEDED(metareader->GetMetadataByName(L"/sRGB/RenderingIntent", &value)) && value.vt == VT_UI1) if (SUCCEEDED(metareader->GetMetadataByName(L"/sRGB/RenderingIntent", &value)) && value.vt == VT_UI1)
{ {
sRGB = true; sRGB = true;
} }
else if (SUCCEEDED(metareader->GetMetadataByName(L"/gAMA/ImageGamma", &value)) && value.vt == VT_UI4)
{
sRGB = (value.uintVal == 45455);
}
} }
else if (SUCCEEDED(metareader->GetMetadataByName(L"System.Image.ColorSpace", &value)) && value.vt == VT_UI2 && value.uiVal == 1) else if (SUCCEEDED(metareader->GetMetadataByName(L"System.Image.ColorSpace", &value)) && value.vt == VT_UI2)
{ {
sRGB = true; sRGB = (value.uiVal == 1);
} }
(void)PropVariantClear(&value); (void)PropVariantClear(&value);

11
WICTextureLoader/WICTextureLoader12.cpp
View File

@ -429,23 +429,26 @@ namespace
GUID containerFormat; GUID containerFormat;
if (SUCCEEDED(metareader->GetContainerFormat(&containerFormat))) if (SUCCEEDED(metareader->GetContainerFormat(&containerFormat)))
{ {
// Check for sRGB colorspace metadata
bool sRGB = false; bool sRGB = false;
PROPVARIANT value; PROPVARIANT value;
PropVariantInit(&value); PropVariantInit(&value);
// Check for colorspace chunks
if (memcmp(&containerFormat, &GUID_ContainerFormatPng, sizeof(GUID)) == 0) if (memcmp(&containerFormat, &GUID_ContainerFormatPng, sizeof(GUID)) == 0)
{ {
// Check for sRGB chunk
if (SUCCEEDED(metareader->GetMetadataByName(L"/sRGB/RenderingIntent", &value)) && value.vt == VT_UI1) if (SUCCEEDED(metareader->GetMetadataByName(L"/sRGB/RenderingIntent", &value)) && value.vt == VT_UI1)
{ {
sRGB = true; sRGB = true;
} }
else if (SUCCEEDED(metareader->GetMetadataByName(L"/gAMA/ImageGamma", &value)) && value.vt == VT_UI4)
{
sRGB = (value.uintVal == 45455);
}
} }
else if (SUCCEEDED(metareader->GetMetadataByName(L"System.Image.ColorSpace", &value)) && value.vt == VT_UI2 && value.uiVal == 1) else if (SUCCEEDED(metareader->GetMetadataByName(L"System.Image.ColorSpace", &value)) && value.vt == VT_UI2)
{ {
sRGB = true; sRGB = (value.uiVal == 1);
} }
(void)PropVariantClear(&value); (void)PropVariantClear(&value);