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nov2021
DirectXTex/ScreenGrab/ScreenGrab11.cpp

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//--------------------------------------------------------------------------------------
// File: ScreenGrab11.cpp
//
// Function for capturing a 2D texture and saving it to a file (aka a 'screenshot'
// when used on a Direct3D Render Target).
//
// Note these functions are useful as a light-weight runtime screen grabber. For
// full-featured texture capture, DDS writer, and texture processing pipeline,
// see the 'Texconv' sample and the 'DirectXTex' library.
//
// Copyright (c) Microsoft Corporation.
// Licensed under the MIT License.
//
// http://go.microsoft.com/fwlink/?LinkId=248926
// http://go.microsoft.com/fwlink/?LinkId=248929
//--------------------------------------------------------------------------------------
// Does not capture 1D textures or 3D textures (volume maps)
// Does not capture mipmap chains, only the top-most texture level is saved
// For 2D array textures and cubemaps, it captures only the first image in the array
#include "ScreenGrab11.h"
#include <algorithm>
#include <cassert>
#include <cstddef>
#include <cstring>
#include <memory>
#include <new>
#include <tuple>
#include <wincodec.h>
#include <wrl\client.h>
#ifdef __clang__
#pragma clang diagnostic ignored "-Wcovered-switch-default"
#pragma clang diagnostic ignored "-Wswitch-enum"
#endif
using Microsoft::WRL::ComPtr;
//--------------------------------------------------------------------------------------
// Macros
//--------------------------------------------------------------------------------------
#ifndef MAKEFOURCC
#define MAKEFOURCC(ch0, ch1, ch2, ch3) \
((uint32_t)(uint8_t)(ch0) | ((uint32_t)(uint8_t)(ch1) << 8) | \
((uint32_t)(uint8_t)(ch2) << 16) | ((uint32_t)(uint8_t)(ch3) << 24 ))
#endif /* defined(MAKEFOURCC) */
//--------------------------------------------------------------------------------------
// DDS file structure definitions
//
// See DDS.h in the 'Texconv' sample and the 'DirectXTex' library
//--------------------------------------------------------------------------------------
namespace
{
#pragma pack(push,1)
#define DDS_MAGIC 0x20534444 // "DDS "
struct DDS_PIXELFORMAT
{
uint32_t size;
uint32_t flags;
uint32_t fourCC;
uint32_t RGBBitCount;
uint32_t RBitMask;
uint32_t GBitMask;
uint32_t BBitMask;
uint32_t ABitMask;
};
#define DDS_FOURCC 0x00000004 // DDPF_FOURCC
#define DDS_RGB 0x00000040 // DDPF_RGB
#define DDS_RGBA 0x00000041 // DDPF_RGB | DDPF_ALPHAPIXELS
#define DDS_LUMINANCE 0x00020000 // DDPF_LUMINANCE
#define DDS_LUMINANCEA 0x00020001 // DDPF_LUMINANCE | DDPF_ALPHAPIXELS
#define DDS_ALPHA 0x00000002 // DDPF_ALPHA
#define DDS_BUMPDUDV 0x00080000 // DDPF_BUMPDUDV
#define DDS_HEADER_FLAGS_TEXTURE 0x00001007 // DDSD_CAPS | DDSD_HEIGHT | DDSD_WIDTH | DDSD_PIXELFORMAT
#define DDS_HEADER_FLAGS_MIPMAP 0x00020000 // DDSD_MIPMAPCOUNT
#define DDS_HEADER_FLAGS_PITCH 0x00000008 // DDSD_PITCH
#define DDS_HEADER_FLAGS_LINEARSIZE 0x00080000 // DDSD_LINEARSIZE
#define DDS_SURFACE_FLAGS_TEXTURE 0x00001000 // DDSCAPS_TEXTURE
struct DDS_HEADER
{
uint32_t size;
uint32_t flags;
uint32_t height;
uint32_t width;
uint32_t pitchOrLinearSize;
uint32_t depth; // only if DDS_HEADER_FLAGS_VOLUME is set in flags
uint32_t mipMapCount;
uint32_t reserved1[11];
DDS_PIXELFORMAT ddspf;
uint32_t caps;
uint32_t caps2;
uint32_t caps3;
uint32_t caps4;
uint32_t reserved2;
};
struct DDS_HEADER_DXT10
{
DXGI_FORMAT dxgiFormat;
uint32_t resourceDimension;
uint32_t miscFlag; // see D3D11_RESOURCE_MISC_FLAG
uint32_t arraySize;
uint32_t reserved;
};
#pragma pack(pop)
const DDS_PIXELFORMAT DDSPF_DXT1 =
{ sizeof(DDS_PIXELFORMAT), DDS_FOURCC, MAKEFOURCC('D','X','T','1'), 0, 0, 0, 0, 0 };
const DDS_PIXELFORMAT DDSPF_DXT3 =
{ sizeof(DDS_PIXELFORMAT), DDS_FOURCC, MAKEFOURCC('D','X','T','3'), 0, 0, 0, 0, 0 };
const DDS_PIXELFORMAT DDSPF_DXT5 =
{ sizeof(DDS_PIXELFORMAT), DDS_FOURCC, MAKEFOURCC('D','X','T','5'), 0, 0, 0, 0, 0 };
const DDS_PIXELFORMAT DDSPF_BC4_UNORM =
{ sizeof(DDS_PIXELFORMAT), DDS_FOURCC, MAKEFOURCC('B','C','4','U'), 0, 0, 0, 0, 0 };
const DDS_PIXELFORMAT DDSPF_BC4_SNORM =
{ sizeof(DDS_PIXELFORMAT), DDS_FOURCC, MAKEFOURCC('B','C','4','S'), 0, 0, 0, 0, 0 };
const DDS_PIXELFORMAT DDSPF_BC5_UNORM =
{ sizeof(DDS_PIXELFORMAT), DDS_FOURCC, MAKEFOURCC('B','C','5','U'), 0, 0, 0, 0, 0 };
const DDS_PIXELFORMAT DDSPF_BC5_SNORM =
{ sizeof(DDS_PIXELFORMAT), DDS_FOURCC, MAKEFOURCC('B','C','5','S'), 0, 0, 0, 0, 0 };
const DDS_PIXELFORMAT DDSPF_R8G8_B8G8 =
{ sizeof(DDS_PIXELFORMAT), DDS_FOURCC, MAKEFOURCC('R','G','B','G'), 0, 0, 0, 0, 0 };
const DDS_PIXELFORMAT DDSPF_G8R8_G8B8 =
{ sizeof(DDS_PIXELFORMAT), DDS_FOURCC, MAKEFOURCC('G','R','G','B'), 0, 0, 0, 0, 0 };
const DDS_PIXELFORMAT DDSPF_YUY2 =
{ sizeof(DDS_PIXELFORMAT), DDS_FOURCC, MAKEFOURCC('Y','U','Y','2'), 0, 0, 0, 0, 0 };
const DDS_PIXELFORMAT DDSPF_A8R8G8B8 =
{ sizeof(DDS_PIXELFORMAT), DDS_RGBA, 0, 32, 0x00ff0000, 0x0000ff00, 0x000000ff, 0xff000000 };
const DDS_PIXELFORMAT DDSPF_X8R8G8B8 =
{ sizeof(DDS_PIXELFORMAT), DDS_RGB, 0, 32, 0x00ff0000, 0x0000ff00, 0x000000ff, 0 };
const DDS_PIXELFORMAT DDSPF_A8B8G8R8 =
{ sizeof(DDS_PIXELFORMAT), DDS_RGBA, 0, 32, 0x000000ff, 0x0000ff00, 0x00ff0000, 0xff000000 };
const DDS_PIXELFORMAT DDSPF_G16R16 =
{ sizeof(DDS_PIXELFORMAT), DDS_RGB, 0, 32, 0x0000ffff, 0xffff0000, 0, 0 };
const DDS_PIXELFORMAT DDSPF_R5G6B5 =
{ sizeof(DDS_PIXELFORMAT), DDS_RGB, 0, 16, 0xf800, 0x07e0, 0x001f, 0 };
const DDS_PIXELFORMAT DDSPF_A1R5G5B5 =
{ sizeof(DDS_PIXELFORMAT), DDS_RGBA, 0, 16, 0x7c00, 0x03e0, 0x001f, 0x8000 };
const DDS_PIXELFORMAT DDSPF_A4R4G4B4 =
{ sizeof(DDS_PIXELFORMAT), DDS_RGBA, 0, 16, 0x0f00, 0x00f0, 0x000f, 0xf000 };
const DDS_PIXELFORMAT DDSPF_L8 =
{ sizeof(DDS_PIXELFORMAT), DDS_LUMINANCE, 0, 8, 0xff, 0, 0, 0 };
const DDS_PIXELFORMAT DDSPF_L16 =
{ sizeof(DDS_PIXELFORMAT), DDS_LUMINANCE, 0, 16, 0xffff, 0, 0, 0 };
const DDS_PIXELFORMAT DDSPF_A8L8 =
{ sizeof(DDS_PIXELFORMAT), DDS_LUMINANCEA, 0, 16, 0x00ff, 0, 0, 0xff00 };
const DDS_PIXELFORMAT DDSPF_A8 =
{ sizeof(DDS_PIXELFORMAT), DDS_ALPHA, 0, 8, 0, 0, 0, 0xff };
const DDS_PIXELFORMAT DDSPF_V8U8 =
{ sizeof(DDS_PIXELFORMAT), DDS_BUMPDUDV, 0, 16, 0x00ff, 0xff00, 0, 0 };
const DDS_PIXELFORMAT DDSPF_Q8W8V8U8 =
{ sizeof(DDS_PIXELFORMAT), DDS_BUMPDUDV, 0, 32, 0x000000ff, 0x0000ff00, 0x00ff0000, 0xff000000 };
const DDS_PIXELFORMAT DDSPF_V16U16 =
{ sizeof(DDS_PIXELFORMAT), DDS_BUMPDUDV, 0, 32, 0x0000ffff, 0xffff0000, 0, 0 };
// DXGI_FORMAT_R10G10B10A2_UNORM should be written using DX10 extension to avoid D3DX 10:10:10:2 reversal issue
// This indicates the DDS_HEADER_DXT10 extension is present (the format is in dxgiFormat)
const DDS_PIXELFORMAT DDSPF_DX10 =
{ sizeof(DDS_PIXELFORMAT), DDS_FOURCC, MAKEFOURCC('D','X','1','0'), 0, 0, 0, 0, 0 };
//-----------------------------------------------------------------------------
struct handle_closer { void operator()(HANDLE h) noexcept { if (h) CloseHandle(h); } };
using ScopedHandle = std::unique_ptr<void, handle_closer>;
inline HANDLE safe_handle(HANDLE h) noexcept { return (h == INVALID_HANDLE_VALUE) ? nullptr : h; }
class auto_delete_file
{
public:
auto_delete_file(HANDLE hFile) noexcept : m_handle(hFile) {}
~auto_delete_file()
{
if (m_handle)
{
FILE_DISPOSITION_INFO info = {};
info.DeleteFile = TRUE;
std::ignore = SetFileInformationByHandle(m_handle, FileDispositionInfo, &info, sizeof(info));
}
}
auto_delete_file(const auto_delete_file&) = delete;
auto_delete_file& operator=(const auto_delete_file&) = delete;
auto_delete_file(const auto_delete_file&&) = delete;
auto_delete_file& operator=(const auto_delete_file&&) = delete;
void clear() noexcept { m_handle = nullptr; }
private:
HANDLE m_handle;
};
class auto_delete_file_wic
{
public:
auto_delete_file_wic(ComPtr<IWICStream>& hFile, const wchar_t* szFile) noexcept : m_filename(szFile), m_handle(hFile) {}
~auto_delete_file_wic()
{
if (m_filename)
{
m_handle.Reset();
DeleteFileW(m_filename);
}
}
auto_delete_file_wic(const auto_delete_file_wic&) = delete;
auto_delete_file_wic& operator=(const auto_delete_file_wic&) = delete;
auto_delete_file_wic(const auto_delete_file_wic&&) = delete;
auto_delete_file_wic& operator=(const auto_delete_file_wic&&) = delete;
void clear() noexcept { m_filename = nullptr; }
private:
const wchar_t* m_filename;
ComPtr<IWICStream>& m_handle;
};
//--------------------------------------------------------------------------------------
// Return the BPP for a particular format
//--------------------------------------------------------------------------------------
size_t BitsPerPixel(_In_ DXGI_FORMAT fmt) noexcept
{
switch (fmt)
{
case DXGI_FORMAT_R32G32B32A32_TYPELESS:
case DXGI_FORMAT_R32G32B32A32_FLOAT:
case DXGI_FORMAT_R32G32B32A32_UINT:
case DXGI_FORMAT_R32G32B32A32_SINT:
return 128;
case DXGI_FORMAT_R32G32B32_TYPELESS:
case DXGI_FORMAT_R32G32B32_FLOAT:
case DXGI_FORMAT_R32G32B32_UINT:
case DXGI_FORMAT_R32G32B32_SINT:
return 96;
case DXGI_FORMAT_R16G16B16A16_TYPELESS:
case DXGI_FORMAT_R16G16B16A16_FLOAT:
case DXGI_FORMAT_R16G16B16A16_UNORM:
case DXGI_FORMAT_R16G16B16A16_UINT:
case DXGI_FORMAT_R16G16B16A16_SNORM:
case DXGI_FORMAT_R16G16B16A16_SINT:
case DXGI_FORMAT_R32G32_TYPELESS:
case DXGI_FORMAT_R32G32_FLOAT:
case DXGI_FORMAT_R32G32_UINT:
case DXGI_FORMAT_R32G32_SINT:
case DXGI_FORMAT_R32G8X24_TYPELESS:
case DXGI_FORMAT_D32_FLOAT_S8X24_UINT:
case DXGI_FORMAT_R32_FLOAT_X8X24_TYPELESS:
case DXGI_FORMAT_X32_TYPELESS_G8X24_UINT:
case DXGI_FORMAT_Y416:
case DXGI_FORMAT_Y210:
case DXGI_FORMAT_Y216:
return 64;
case DXGI_FORMAT_R10G10B10A2_TYPELESS:
case DXGI_FORMAT_R10G10B10A2_UNORM:
case DXGI_FORMAT_R10G10B10A2_UINT:
case DXGI_FORMAT_R11G11B10_FLOAT:
case DXGI_FORMAT_R8G8B8A8_TYPELESS:
case DXGI_FORMAT_R8G8B8A8_UNORM:
case DXGI_FORMAT_R8G8B8A8_UNORM_SRGB:
case DXGI_FORMAT_R8G8B8A8_UINT:
case DXGI_FORMAT_R8G8B8A8_SNORM:
case DXGI_FORMAT_R8G8B8A8_SINT:
case DXGI_FORMAT_R16G16_TYPELESS:
case DXGI_FORMAT_R16G16_FLOAT:
case DXGI_FORMAT_R16G16_UNORM:
case DXGI_FORMAT_R16G16_UINT:
case DXGI_FORMAT_R16G16_SNORM:
case DXGI_FORMAT_R16G16_SINT:
case DXGI_FORMAT_R32_TYPELESS:
case DXGI_FORMAT_D32_FLOAT:
case DXGI_FORMAT_R32_FLOAT:
case DXGI_FORMAT_R32_UINT:
case DXGI_FORMAT_R32_SINT:
case DXGI_FORMAT_R24G8_TYPELESS:
case DXGI_FORMAT_D24_UNORM_S8_UINT:
case DXGI_FORMAT_R24_UNORM_X8_TYPELESS:
case DXGI_FORMAT_X24_TYPELESS_G8_UINT:
case DXGI_FORMAT_R9G9B9E5_SHAREDEXP:
case DXGI_FORMAT_R8G8_B8G8_UNORM:
case DXGI_FORMAT_G8R8_G8B8_UNORM:
case DXGI_FORMAT_B8G8R8A8_UNORM:
case DXGI_FORMAT_B8G8R8X8_UNORM:
case DXGI_FORMAT_R10G10B10_XR_BIAS_A2_UNORM:
case DXGI_FORMAT_B8G8R8A8_TYPELESS:
case DXGI_FORMAT_B8G8R8A8_UNORM_SRGB:
case DXGI_FORMAT_B8G8R8X8_TYPELESS:
case DXGI_FORMAT_B8G8R8X8_UNORM_SRGB:
case DXGI_FORMAT_AYUV:
case DXGI_FORMAT_Y410:
case DXGI_FORMAT_YUY2:
return 32;
case DXGI_FORMAT_P010:
case DXGI_FORMAT_P016:
return 24;
case DXGI_FORMAT_R8G8_TYPELESS:
case DXGI_FORMAT_R8G8_UNORM:
case DXGI_FORMAT_R8G8_UINT:
case DXGI_FORMAT_R8G8_SNORM:
case DXGI_FORMAT_R8G8_SINT:
case DXGI_FORMAT_R16_TYPELESS:
case DXGI_FORMAT_R16_FLOAT:
case DXGI_FORMAT_D16_UNORM:
case DXGI_FORMAT_R16_UNORM:
case DXGI_FORMAT_R16_UINT:
case DXGI_FORMAT_R16_SNORM:
case DXGI_FORMAT_R16_SINT:
case DXGI_FORMAT_B5G6R5_UNORM:
case DXGI_FORMAT_B5G5R5A1_UNORM:
case DXGI_FORMAT_A8P8:
case DXGI_FORMAT_B4G4R4A4_UNORM:
return 16;
case DXGI_FORMAT_NV12:
case DXGI_FORMAT_420_OPAQUE:
case DXGI_FORMAT_NV11:
return 12;
case DXGI_FORMAT_R8_TYPELESS:
case DXGI_FORMAT_R8_UNORM:
case DXGI_FORMAT_R8_UINT:
case DXGI_FORMAT_R8_SNORM:
case DXGI_FORMAT_R8_SINT:
case DXGI_FORMAT_A8_UNORM:
case DXGI_FORMAT_BC2_TYPELESS:
case DXGI_FORMAT_BC2_UNORM:
case DXGI_FORMAT_BC2_UNORM_SRGB:
case DXGI_FORMAT_BC3_TYPELESS:
case DXGI_FORMAT_BC3_UNORM:
case DXGI_FORMAT_BC3_UNORM_SRGB:
case DXGI_FORMAT_BC5_TYPELESS:
case DXGI_FORMAT_BC5_UNORM:
case DXGI_FORMAT_BC5_SNORM:
case DXGI_FORMAT_BC6H_TYPELESS:
case DXGI_FORMAT_BC6H_UF16:
case DXGI_FORMAT_BC6H_SF16:
case DXGI_FORMAT_BC7_TYPELESS:
case DXGI_FORMAT_BC7_UNORM:
case DXGI_FORMAT_BC7_UNORM_SRGB:
case DXGI_FORMAT_AI44:
case DXGI_FORMAT_IA44:
case DXGI_FORMAT_P8:
return 8;
case DXGI_FORMAT_R1_UNORM:
return 1;
case DXGI_FORMAT_BC1_TYPELESS:
case DXGI_FORMAT_BC1_UNORM:
case DXGI_FORMAT_BC1_UNORM_SRGB:
case DXGI_FORMAT_BC4_TYPELESS:
case DXGI_FORMAT_BC4_UNORM:
case DXGI_FORMAT_BC4_SNORM:
return 4;
default:
return 0;
}
}
//--------------------------------------------------------------------------------------
// Determines if the format is block compressed
//--------------------------------------------------------------------------------------
bool IsCompressed(_In_ DXGI_FORMAT fmt) noexcept
{
switch (fmt)
{
case DXGI_FORMAT_BC1_TYPELESS:
case DXGI_FORMAT_BC1_UNORM:
case DXGI_FORMAT_BC1_UNORM_SRGB:
case DXGI_FORMAT_BC2_TYPELESS:
case DXGI_FORMAT_BC2_UNORM:
case DXGI_FORMAT_BC2_UNORM_SRGB:
case DXGI_FORMAT_BC3_TYPELESS:
case DXGI_FORMAT_BC3_UNORM:
case DXGI_FORMAT_BC3_UNORM_SRGB:
case DXGI_FORMAT_BC4_TYPELESS:
case DXGI_FORMAT_BC4_UNORM:
case DXGI_FORMAT_BC4_SNORM:
case DXGI_FORMAT_BC5_TYPELESS:
case DXGI_FORMAT_BC5_UNORM:
case DXGI_FORMAT_BC5_SNORM:
case DXGI_FORMAT_BC6H_TYPELESS:
case DXGI_FORMAT_BC6H_UF16:
case DXGI_FORMAT_BC6H_SF16:
case DXGI_FORMAT_BC7_TYPELESS:
case DXGI_FORMAT_BC7_UNORM:
case DXGI_FORMAT_BC7_UNORM_SRGB:
return true;
default:
return false;
}
}
//--------------------------------------------------------------------------------------
// Get surface information for a particular format
//--------------------------------------------------------------------------------------
HRESULT GetSurfaceInfo(
_In_ size_t width,
_In_ size_t height,
_In_ DXGI_FORMAT fmt,
_Out_opt_ size_t* outNumBytes,
_Out_opt_ size_t* outRowBytes,
_Out_opt_ size_t* outNumRows) noexcept
{
uint64_t numBytes = 0;
uint64_t rowBytes = 0;
uint64_t numRows = 0;
bool bc = false;
bool packed = false;
bool planar = false;
size_t bpe = 0;
switch (fmt)
{
case DXGI_FORMAT_BC1_TYPELESS:
case DXGI_FORMAT_BC1_UNORM:
case DXGI_FORMAT_BC1_UNORM_SRGB:
case DXGI_FORMAT_BC4_TYPELESS:
case DXGI_FORMAT_BC4_UNORM:
case DXGI_FORMAT_BC4_SNORM:
bc = true;
bpe = 8;
break;
case DXGI_FORMAT_BC2_TYPELESS:
case DXGI_FORMAT_BC2_UNORM:
case DXGI_FORMAT_BC2_UNORM_SRGB:
case DXGI_FORMAT_BC3_TYPELESS:
case DXGI_FORMAT_BC3_UNORM:
case DXGI_FORMAT_BC3_UNORM_SRGB:
case DXGI_FORMAT_BC5_TYPELESS:
case DXGI_FORMAT_BC5_UNORM:
case DXGI_FORMAT_BC5_SNORM:
case DXGI_FORMAT_BC6H_TYPELESS:
case DXGI_FORMAT_BC6H_UF16:
case DXGI_FORMAT_BC6H_SF16:
case DXGI_FORMAT_BC7_TYPELESS:
case DXGI_FORMAT_BC7_UNORM:
case DXGI_FORMAT_BC7_UNORM_SRGB:
bc = true;
bpe = 16;
break;
case DXGI_FORMAT_R8G8_B8G8_UNORM:
case DXGI_FORMAT_G8R8_G8B8_UNORM:
case DXGI_FORMAT_YUY2:
packed = true;
bpe = 4;
break;
case DXGI_FORMAT_Y210:
case DXGI_FORMAT_Y216:
packed = true;
bpe = 8;
break;
case DXGI_FORMAT_NV12:
case DXGI_FORMAT_420_OPAQUE:
planar = true;
bpe = 2;
break;
case DXGI_FORMAT_P010:
case DXGI_FORMAT_P016:
planar = true;
bpe = 4;
break;
default:
break;
}
if (bc)
{
uint64_t numBlocksWide = 0;
if (width > 0)
{
numBlocksWide = std::max<uint64_t>(1u, (uint64_t(width) + 3u) / 4u);
}
uint64_t numBlocksHigh = 0;
if (height > 0)
{
numBlocksHigh = std::max<uint64_t>(1u, (uint64_t(height) + 3u) / 4u);
}
rowBytes = numBlocksWide * bpe;
numRows = numBlocksHigh;
numBytes = rowBytes * numBlocksHigh;
}
else if (packed)
{
rowBytes = ((uint64_t(width) + 1u) >> 1) * bpe;
numRows = uint64_t(height);
numBytes = rowBytes * height;
}
else if (fmt == DXGI_FORMAT_NV11)
{
rowBytes = ((uint64_t(width) + 3u) >> 2) * 4u;
numRows = uint64_t(height) * 2u; // Direct3D makes this simplifying assumption, although it is larger than the 4:1:1 data
numBytes = rowBytes * numRows;
}
else if (planar)
{
rowBytes = ((uint64_t(width) + 1u) >> 1) * bpe;
numBytes = (rowBytes * uint64_t(height)) + ((rowBytes * uint64_t(height) + 1u) >> 1);
numRows = height + ((uint64_t(height) + 1u) >> 1);
}
else
{
size_t bpp = BitsPerPixel(fmt);
if (!bpp)
return E_INVALIDARG;
rowBytes = (uint64_t(width) * bpp + 7u) / 8u; // round up to nearest byte
numRows = uint64_t(height);
numBytes = rowBytes * height;
}
#if defined(_M_IX86) || defined(_M_ARM) || defined(_M_HYBRID_X86_ARM64)
static_assert(sizeof(size_t) == 4, "Not a 32-bit platform!");
if (numBytes > UINT32_MAX || rowBytes > UINT32_MAX || numRows > UINT32_MAX)
return HRESULT_FROM_WIN32(ERROR_ARITHMETIC_OVERFLOW);
#else
static_assert(sizeof(size_t) == 8, "Not a 64-bit platform!");
#endif
if (outNumBytes)
{
*outNumBytes = static_cast<size_t>(numBytes);
}
if (outRowBytes)
{
*outRowBytes = static_cast<size_t>(rowBytes);
}
if (outNumRows)
{
*outNumRows = static_cast<size_t>(numRows);
}
return S_OK;
}
//--------------------------------------------------------------------------------------
DXGI_FORMAT EnsureNotTypeless(DXGI_FORMAT fmt) noexcept
{
// Assumes UNORM or FLOAT; doesn't use UINT or SINT
switch (fmt)
{
case DXGI_FORMAT_R32G32B32A32_TYPELESS: return DXGI_FORMAT_R32G32B32A32_FLOAT;
case DXGI_FORMAT_R32G32B32_TYPELESS: return DXGI_FORMAT_R32G32B32_FLOAT;
case DXGI_FORMAT_R16G16B16A16_TYPELESS: return DXGI_FORMAT_R16G16B16A16_UNORM;
case DXGI_FORMAT_R32G32_TYPELESS: return DXGI_FORMAT_R32G32_FLOAT;
case DXGI_FORMAT_R10G10B10A2_TYPELESS: return DXGI_FORMAT_R10G10B10A2_UNORM;
case DXGI_FORMAT_R8G8B8A8_TYPELESS: return DXGI_FORMAT_R8G8B8A8_UNORM;
case DXGI_FORMAT_R16G16_TYPELESS: return DXGI_FORMAT_R16G16_UNORM;
case DXGI_FORMAT_R32_TYPELESS: return DXGI_FORMAT_R32_FLOAT;
case DXGI_FORMAT_R8G8_TYPELESS: return DXGI_FORMAT_R8G8_UNORM;
case DXGI_FORMAT_R16_TYPELESS: return DXGI_FORMAT_R16_UNORM;
case DXGI_FORMAT_R8_TYPELESS: return DXGI_FORMAT_R8_UNORM;
case DXGI_FORMAT_BC1_TYPELESS: return DXGI_FORMAT_BC1_UNORM;
case DXGI_FORMAT_BC2_TYPELESS: return DXGI_FORMAT_BC2_UNORM;
case DXGI_FORMAT_BC3_TYPELESS: return DXGI_FORMAT_BC3_UNORM;
case DXGI_FORMAT_BC4_TYPELESS: return DXGI_FORMAT_BC4_UNORM;
case DXGI_FORMAT_BC5_TYPELESS: return DXGI_FORMAT_BC5_UNORM;
case DXGI_FORMAT_B8G8R8A8_TYPELESS: return DXGI_FORMAT_B8G8R8A8_UNORM;
case DXGI_FORMAT_B8G8R8X8_TYPELESS: return DXGI_FORMAT_B8G8R8X8_UNORM;
case DXGI_FORMAT_BC7_TYPELESS: return DXGI_FORMAT_BC7_UNORM;
default: return fmt;
}
}
//--------------------------------------------------------------------------------------
HRESULT CaptureTexture(
_In_ ID3D11DeviceContext* pContext,
_In_ ID3D11Resource* pSource,
D3D11_TEXTURE2D_DESC& desc,
ComPtr<ID3D11Texture2D>& pStaging) noexcept
{
if (!pContext || !pSource)
return E_INVALIDARG;
D3D11_RESOURCE_DIMENSION resType = D3D11_RESOURCE_DIMENSION_UNKNOWN;
pSource->GetType(&resType);
if (resType != D3D11_RESOURCE_DIMENSION_TEXTURE2D)
return HRESULT_FROM_WIN32(ERROR_NOT_SUPPORTED);
ComPtr<ID3D11Texture2D> pTexture;
HRESULT hr = pSource->QueryInterface(IID_ID3D11Texture2D, reinterpret_cast<void**>(pTexture.GetAddressOf()));
if (FAILED(hr))
return hr;
assert(pTexture);
pTexture->GetDesc(&desc);
ComPtr<ID3D11Device> d3dDevice;
pContext->GetDevice(d3dDevice.GetAddressOf());
if (desc.SampleDesc.Count > 1)
{
// MSAA content must be resolved before being copied to a staging texture
desc.SampleDesc.Count = 1;
desc.SampleDesc.Quality = 0;
ComPtr<ID3D11Texture2D> pTemp;
hr = d3dDevice->CreateTexture2D(&desc, nullptr, pTemp.GetAddressOf());
if (FAILED(hr))
return hr;
assert(pTemp);
DXGI_FORMAT fmt = EnsureNotTypeless(desc.Format);
UINT support = 0;
hr = d3dDevice->CheckFormatSupport(fmt, &support);
if (FAILED(hr))
return hr;
if (!(support & D3D11_FORMAT_SUPPORT_MULTISAMPLE_RESOLVE))
return E_FAIL;
for (UINT item = 0; item < desc.ArraySize; ++item)
{
for (UINT level = 0; level < desc.MipLevels; ++level)
{
UINT index = D3D11CalcSubresource(level, item, desc.MipLevels);
pContext->ResolveSubresource(pTemp.Get(), index, pSource, index, fmt);
}
}
desc.BindFlags = 0;
desc.MiscFlags &= D3D11_RESOURCE_MISC_TEXTURECUBE;
desc.CPUAccessFlags = D3D11_CPU_ACCESS_READ;
desc.Usage = D3D11_USAGE_STAGING;
hr = d3dDevice->CreateTexture2D(&desc, nullptr, pStaging.ReleaseAndGetAddressOf());
if (FAILED(hr))
return hr;
assert(pStaging);
pContext->CopyResource(pStaging.Get(), pTemp.Get());
}
else if ((desc.Usage == D3D11_USAGE_STAGING) && (desc.CPUAccessFlags & D3D11_CPU_ACCESS_READ))
{
// Handle case where the source is already a staging texture we can use directly
pStaging = pTexture;
}
else
{
// Otherwise, create a staging texture from the non-MSAA source
desc.BindFlags = 0;
desc.MiscFlags &= D3D11_RESOURCE_MISC_TEXTURECUBE;
desc.CPUAccessFlags = D3D11_CPU_ACCESS_READ;
desc.Usage = D3D11_USAGE_STAGING;
hr = d3dDevice->CreateTexture2D(&desc, nullptr, pStaging.ReleaseAndGetAddressOf());
if (FAILED(hr))
return hr;
assert(pStaging);
pContext->CopyResource(pStaging.Get(), pSource);
}
return S_OK;
}
//--------------------------------------------------------------------------------------
bool g_WIC2 = false;
BOOL WINAPI InitializeWICFactory(PINIT_ONCE, PVOID, PVOID* ifactory) noexcept
{
#if (_WIN32_WINNT >= _WIN32_WINNT_WIN8) || defined(_WIN7_PLATFORM_UPDATE)
HRESULT hr = CoCreateInstance(
CLSID_WICImagingFactory2,
nullptr,
CLSCTX_INPROC_SERVER,
__uuidof(IWICImagingFactory2),
ifactory
);
if (SUCCEEDED(hr))
{
// WIC2 is available on Windows 10, Windows 8.x, and Windows 7 SP1 with KB 2670838 installed
g_WIC2 = true;
return TRUE;
}
else
{
hr = CoCreateInstance(
CLSID_WICImagingFactory1,
nullptr,
CLSCTX_INPROC_SERVER,
__uuidof(IWICImagingFactory),
ifactory
);
return SUCCEEDED(hr) ? TRUE : FALSE;
}
#else
return SUCCEEDED(CoCreateInstance(
CLSID_WICImagingFactory,
nullptr,
CLSCTX_INPROC_SERVER,
__uuidof(IWICImagingFactory),
ifactory)) ? TRUE : FALSE;
#endif
}
IWICImagingFactory* _GetWIC() noexcept
{
static INIT_ONCE s_initOnce = INIT_ONCE_STATIC_INIT;
IWICImagingFactory* factory = nullptr;
if (!InitOnceExecuteOnce(&s_initOnce,
InitializeWICFactory,
nullptr,
reinterpret_cast<LPVOID*>(&factory)))
{
return nullptr;
}
return factory;
}
} // anonymous namespace
//--------------------------------------------------------------------------------------
_Use_decl_annotations_
HRESULT DirectX::SaveDDSTextureToFile(
ID3D11DeviceContext* pContext,
ID3D11Resource* pSource,
const wchar_t* fileName) noexcept
{
if (!fileName)
return E_INVALIDARG;
D3D11_TEXTURE2D_DESC desc = {};
ComPtr<ID3D11Texture2D> pStaging;
HRESULT hr = CaptureTexture(pContext, pSource, desc, pStaging);
if (FAILED(hr))
return hr;
// Create file
#if (_WIN32_WINNT >= _WIN32_WINNT_WIN8)
ScopedHandle hFile(safe_handle(CreateFile2(fileName,
GENERIC_WRITE | DELETE, 0, CREATE_ALWAYS, nullptr)));
#else
ScopedHandle hFile(safe_handle(CreateFileW(fileName,
GENERIC_WRITE | DELETE, 0, nullptr, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, nullptr)));
#endif
if (!hFile)
return HRESULT_FROM_WIN32(GetLastError());
auto_delete_file delonfail(hFile.get());
// Setup header
const size_t MAX_HEADER_SIZE = sizeof(uint32_t) + sizeof(DDS_HEADER) + sizeof(DDS_HEADER_DXT10);
uint8_t fileHeader[MAX_HEADER_SIZE] = {};
*reinterpret_cast<uint32_t*>(&fileHeader[0]) = DDS_MAGIC;
auto header = reinterpret_cast<DDS_HEADER*>(&fileHeader[0] + sizeof(uint32_t));
size_t headerSize = sizeof(uint32_t) + sizeof(DDS_HEADER);
header->size = sizeof(DDS_HEADER);
header->flags = DDS_HEADER_FLAGS_TEXTURE | DDS_HEADER_FLAGS_MIPMAP;
header->height = desc.Height;
header->width = desc.Width;
header->mipMapCount = 1;
header->caps = DDS_SURFACE_FLAGS_TEXTURE;
// Try to use a legacy .DDS pixel format for better tools support, otherwise fallback to 'DX10' header extension
DDS_HEADER_DXT10* extHeader = nullptr;
switch (desc.Format)
{
case DXGI_FORMAT_R8G8B8A8_UNORM: memcpy_s(&header->ddspf, sizeof(header->ddspf), &DDSPF_A8B8G8R8, sizeof(DDS_PIXELFORMAT)); break;
case DXGI_FORMAT_R16G16_UNORM: memcpy_s(&header->ddspf, sizeof(header->ddspf), &DDSPF_G16R16, sizeof(DDS_PIXELFORMAT)); break;
case DXGI_FORMAT_R8G8_UNORM: memcpy_s(&header->ddspf, sizeof(header->ddspf), &DDSPF_A8L8, sizeof(DDS_PIXELFORMAT)); break;
case DXGI_FORMAT_R16_UNORM: memcpy_s(&header->ddspf, sizeof(header->ddspf), &DDSPF_L16, sizeof(DDS_PIXELFORMAT)); break;
case DXGI_FORMAT_R8_UNORM: memcpy_s(&header->ddspf, sizeof(header->ddspf), &DDSPF_L8, sizeof(DDS_PIXELFORMAT)); break;
case DXGI_FORMAT_A8_UNORM: memcpy_s(&header->ddspf, sizeof(header->ddspf), &DDSPF_A8, sizeof(DDS_PIXELFORMAT)); break;
case DXGI_FORMAT_R8G8_B8G8_UNORM: memcpy_s(&header->ddspf, sizeof(header->ddspf), &DDSPF_R8G8_B8G8, sizeof(DDS_PIXELFORMAT)); break;
case DXGI_FORMAT_G8R8_G8B8_UNORM: memcpy_s(&header->ddspf, sizeof(header->ddspf), &DDSPF_G8R8_G8B8, sizeof(DDS_PIXELFORMAT)); break;
case DXGI_FORMAT_BC1_UNORM: memcpy_s(&header->ddspf, sizeof(header->ddspf), &DDSPF_DXT1, sizeof(DDS_PIXELFORMAT)); break;
case DXGI_FORMAT_BC2_UNORM: memcpy_s(&header->ddspf, sizeof(header->ddspf), &DDSPF_DXT3, sizeof(DDS_PIXELFORMAT)); break;
case DXGI_FORMAT_BC3_UNORM: memcpy_s(&header->ddspf, sizeof(header->ddspf), &DDSPF_DXT5, sizeof(DDS_PIXELFORMAT)); break;
case DXGI_FORMAT_BC4_UNORM: memcpy_s(&header->ddspf, sizeof(header->ddspf), &DDSPF_BC4_UNORM, sizeof(DDS_PIXELFORMAT)); break;
case DXGI_FORMAT_BC4_SNORM: memcpy_s(&header->ddspf, sizeof(header->ddspf), &DDSPF_BC4_SNORM, sizeof(DDS_PIXELFORMAT)); break;
case DXGI_FORMAT_BC5_UNORM: memcpy_s(&header->ddspf, sizeof(header->ddspf), &DDSPF_BC5_UNORM, sizeof(DDS_PIXELFORMAT)); break;
case DXGI_FORMAT_BC5_SNORM: memcpy_s(&header->ddspf, sizeof(header->ddspf), &DDSPF_BC5_SNORM, sizeof(DDS_PIXELFORMAT)); break;
case DXGI_FORMAT_B5G6R5_UNORM: memcpy_s(&header->ddspf, sizeof(header->ddspf), &DDSPF_R5G6B5, sizeof(DDS_PIXELFORMAT)); break;
case DXGI_FORMAT_B5G5R5A1_UNORM: memcpy_s(&header->ddspf, sizeof(header->ddspf), &DDSPF_A1R5G5B5, sizeof(DDS_PIXELFORMAT)); break;
case DXGI_FORMAT_R8G8_SNORM: memcpy_s(&header->ddspf, sizeof(header->ddspf), &DDSPF_V8U8, sizeof(DDS_PIXELFORMAT)); break;
case DXGI_FORMAT_R8G8B8A8_SNORM: memcpy_s(&header->ddspf, sizeof(header->ddspf), &DDSPF_Q8W8V8U8, sizeof(DDS_PIXELFORMAT)); break;
case DXGI_FORMAT_R16G16_SNORM: memcpy_s(&header->ddspf, sizeof(header->ddspf), &DDSPF_V16U16, sizeof(DDS_PIXELFORMAT)); break;
case DXGI_FORMAT_B8G8R8A8_UNORM: memcpy_s(&header->ddspf, sizeof(header->ddspf), &DDSPF_A8R8G8B8, sizeof(DDS_PIXELFORMAT)); break; // DXGI 1.1
case DXGI_FORMAT_B8G8R8X8_UNORM: memcpy_s(&header->ddspf, sizeof(header->ddspf), &DDSPF_X8R8G8B8, sizeof(DDS_PIXELFORMAT)); break; // DXGI 1.1
case DXGI_FORMAT_YUY2: memcpy_s(&header->ddspf, sizeof(header->ddspf), &DDSPF_YUY2, sizeof(DDS_PIXELFORMAT)); break; // DXGI 1.2
case DXGI_FORMAT_B4G4R4A4_UNORM: memcpy_s(&header->ddspf, sizeof(header->ddspf), &DDSPF_A4R4G4B4, sizeof(DDS_PIXELFORMAT)); break; // DXGI 1.2
// Legacy D3DX formats using D3DFMT enum value as FourCC
case DXGI_FORMAT_R32G32B32A32_FLOAT: header->ddspf.size = sizeof(DDS_PIXELFORMAT); header->ddspf.flags = DDS_FOURCC; header->ddspf.fourCC = 116; break; // D3DFMT_A32B32G32R32F
case DXGI_FORMAT_R16G16B16A16_FLOAT: header->ddspf.size = sizeof(DDS_PIXELFORMAT); header->ddspf.flags = DDS_FOURCC; header->ddspf.fourCC = 113; break; // D3DFMT_A16B16G16R16F
case DXGI_FORMAT_R16G16B16A16_UNORM: header->ddspf.size = sizeof(DDS_PIXELFORMAT); header->ddspf.flags = DDS_FOURCC; header->ddspf.fourCC = 36; break; // D3DFMT_A16B16G16R16
case DXGI_FORMAT_R16G16B16A16_SNORM: header->ddspf.size = sizeof(DDS_PIXELFORMAT); header->ddspf.flags = DDS_FOURCC; header->ddspf.fourCC = 110; break; // D3DFMT_Q16W16V16U16
case DXGI_FORMAT_R32G32_FLOAT: header->ddspf.size = sizeof(DDS_PIXELFORMAT); header->ddspf.flags = DDS_FOURCC; header->ddspf.fourCC = 115; break; // D3DFMT_G32R32F
case DXGI_FORMAT_R16G16_FLOAT: header->ddspf.size = sizeof(DDS_PIXELFORMAT); header->ddspf.flags = DDS_FOURCC; header->ddspf.fourCC = 112; break; // D3DFMT_G16R16F
case DXGI_FORMAT_R32_FLOAT: header->ddspf.size = sizeof(DDS_PIXELFORMAT); header->ddspf.flags = DDS_FOURCC; header->ddspf.fourCC = 114; break; // D3DFMT_R32F
case DXGI_FORMAT_R16_FLOAT: header->ddspf.size = sizeof(DDS_PIXELFORMAT); header->ddspf.flags = DDS_FOURCC; header->ddspf.fourCC = 111; break; // D3DFMT_R16F
case DXGI_FORMAT_AI44:
case DXGI_FORMAT_IA44:
case DXGI_FORMAT_P8:
case DXGI_FORMAT_A8P8:
return HRESULT_FROM_WIN32(ERROR_NOT_SUPPORTED);
default:
memcpy_s(&header->ddspf, sizeof(header->ddspf), &DDSPF_DX10, sizeof(DDS_PIXELFORMAT));
headerSize += sizeof(DDS_HEADER_DXT10);
extHeader = reinterpret_cast<DDS_HEADER_DXT10*>(fileHeader + sizeof(uint32_t) + sizeof(DDS_HEADER));
extHeader->dxgiFormat = desc.Format;
extHeader->resourceDimension = D3D11_RESOURCE_DIMENSION_TEXTURE2D;
extHeader->arraySize = 1;
break;
}
size_t rowPitch, slicePitch, rowCount;
hr = GetSurfaceInfo(desc.Width, desc.Height, desc.Format, &slicePitch, &rowPitch, &rowCount);
if (FAILED(hr))
return hr;
if (rowPitch > UINT32_MAX || slicePitch > UINT32_MAX)
return HRESULT_FROM_WIN32(ERROR_ARITHMETIC_OVERFLOW);
if (IsCompressed(desc.Format))
{
header->flags |= DDS_HEADER_FLAGS_LINEARSIZE;
header->pitchOrLinearSize = static_cast<uint32_t>(slicePitch);
}
else
{
header->flags |= DDS_HEADER_FLAGS_PITCH;
header->pitchOrLinearSize = static_cast<uint32_t>(rowPitch);
}
// Setup pixels
std::unique_ptr<uint8_t[]> pixels(new (std::nothrow) uint8_t[slicePitch]);
if (!pixels)
return E_OUTOFMEMORY;
D3D11_MAPPED_SUBRESOURCE mapped;
hr = pContext->Map(pStaging.Get(), 0, D3D11_MAP_READ, 0, &mapped);
if (FAILED(hr))
return hr;
auto sptr = static_cast<const uint8_t*>(mapped.pData);
if (!sptr)
{
pContext->Unmap(pStaging.Get(), 0);
return E_POINTER;
}
uint8_t* dptr = pixels.get();
size_t msize = std::min<size_t>(rowPitch, mapped.RowPitch);
for (size_t h = 0; h < rowCount; ++h)
{
memcpy_s(dptr, rowPitch, sptr, msize);
sptr += mapped.RowPitch;
dptr += rowPitch;
}
pContext->Unmap(pStaging.Get(), 0);
// Write header & pixels
DWORD bytesWritten;
if (!WriteFile(hFile.get(), fileHeader, static_cast<DWORD>(headerSize), &bytesWritten, nullptr))
return HRESULT_FROM_WIN32(GetLastError());
if (bytesWritten != headerSize)
return E_FAIL;
if (!WriteFile(hFile.get(), pixels.get(), static_cast<DWORD>(slicePitch), &bytesWritten, nullptr))
return HRESULT_FROM_WIN32(GetLastError());
if (bytesWritten != slicePitch)
return E_FAIL;
delonfail.clear();
return S_OK;
}
//--------------------------------------------------------------------------------------
_Use_decl_annotations_
HRESULT DirectX::SaveWICTextureToFile(
ID3D11DeviceContext* pContext,
ID3D11Resource* pSource,
REFGUID guidContainerFormat,
const wchar_t* fileName,
const GUID* targetFormat,
std::function<void(IPropertyBag2*)> setCustomProps,
bool forceSRGB)
{
if (!fileName)
return E_INVALIDARG;
D3D11_TEXTURE2D_DESC desc = {};
ComPtr<ID3D11Texture2D> pStaging;
HRESULT hr = CaptureTexture(pContext, pSource, desc, pStaging);
if (FAILED(hr))
return hr;
// Determine source format's WIC equivalent
WICPixelFormatGUID pfGuid = {};
bool sRGB = forceSRGB;
switch (desc.Format)
{
case DXGI_FORMAT_R32G32B32A32_FLOAT: pfGuid = GUID_WICPixelFormat128bppRGBAFloat; break;
case DXGI_FORMAT_R16G16B16A16_FLOAT: pfGuid = GUID_WICPixelFormat64bppRGBAHalf; break;
case DXGI_FORMAT_R16G16B16A16_UNORM: pfGuid = GUID_WICPixelFormat64bppRGBA; break;
case DXGI_FORMAT_R10G10B10_XR_BIAS_A2_UNORM: pfGuid = GUID_WICPixelFormat32bppRGBA1010102XR; break; // DXGI 1.1
case DXGI_FORMAT_R10G10B10A2_UNORM: pfGuid = GUID_WICPixelFormat32bppRGBA1010102; break;
case DXGI_FORMAT_B5G5R5A1_UNORM: pfGuid = GUID_WICPixelFormat16bppBGRA5551; break;
case DXGI_FORMAT_B5G6R5_UNORM: pfGuid = GUID_WICPixelFormat16bppBGR565; break;
case DXGI_FORMAT_R32_FLOAT: pfGuid = GUID_WICPixelFormat32bppGrayFloat; break;
case DXGI_FORMAT_R16_FLOAT: pfGuid = GUID_WICPixelFormat16bppGrayHalf; break;
case DXGI_FORMAT_R16_UNORM: pfGuid = GUID_WICPixelFormat16bppGray; break;
case DXGI_FORMAT_R8_UNORM: pfGuid = GUID_WICPixelFormat8bppGray; break;
case DXGI_FORMAT_A8_UNORM: pfGuid = GUID_WICPixelFormat8bppAlpha; break;
case DXGI_FORMAT_R8G8B8A8_UNORM:
pfGuid = GUID_WICPixelFormat32bppRGBA;
break;
case DXGI_FORMAT_R8G8B8A8_UNORM_SRGB:
pfGuid = GUID_WICPixelFormat32bppRGBA;
sRGB = true;
break;
case DXGI_FORMAT_B8G8R8A8_UNORM: // DXGI 1.1
pfGuid = GUID_WICPixelFormat32bppBGRA;
break;
case DXGI_FORMAT_B8G8R8A8_UNORM_SRGB: // DXGI 1.1
pfGuid = GUID_WICPixelFormat32bppBGRA;
sRGB = true;
break;
case DXGI_FORMAT_B8G8R8X8_UNORM: // DXGI 1.1
pfGuid = GUID_WICPixelFormat32bppBGR;
break;
case DXGI_FORMAT_B8G8R8X8_UNORM_SRGB: // DXGI 1.1
pfGuid = GUID_WICPixelFormat32bppBGR;
sRGB = true;
break;
default:
return HRESULT_FROM_WIN32(ERROR_NOT_SUPPORTED);
}
auto pWIC = _GetWIC();
if (!pWIC)
return E_NOINTERFACE;
ComPtr<IWICStream> stream;
hr = pWIC->CreateStream(stream.GetAddressOf());
if (FAILED(hr))
return hr;
hr = stream->InitializeFromFilename(fileName, GENERIC_WRITE);
if (FAILED(hr))
return hr;
auto_delete_file_wic delonfail(stream, fileName);
ComPtr<IWICBitmapEncoder> encoder;
hr = pWIC->CreateEncoder(guidContainerFormat, nullptr, encoder.GetAddressOf());
if (FAILED(hr))
return hr;
hr = encoder->Initialize(stream.Get(), WICBitmapEncoderNoCache);
if (FAILED(hr))
return hr;
ComPtr<IWICBitmapFrameEncode> frame;
ComPtr<IPropertyBag2> props;
hr = encoder->CreateNewFrame(frame.GetAddressOf(), props.GetAddressOf());
if (FAILED(hr))
return hr;
if (targetFormat && memcmp(&guidContainerFormat, &GUID_ContainerFormatBmp, sizeof(WICPixelFormatGUID)) == 0 && g_WIC2)
{
// Opt-in to the WIC2 support for writing 32-bit Windows BMP files with an alpha channel
PROPBAG2 option = {};
option.pstrName = const_cast<wchar_t*>(L"EnableV5Header32bppBGRA");
VARIANT varValue;
varValue.vt = VT_BOOL;
varValue.boolVal = VARIANT_TRUE;
std::ignore = props->Write(1, &option, &varValue);
}
if (setCustomProps)
{
setCustomProps(props.Get());
}
hr = frame->Initialize(props.Get());
if (FAILED(hr))
return hr;
hr = frame->SetSize(desc.Width, desc.Height);
if (FAILED(hr))
return hr;
hr = frame->SetResolution(72, 72);
if (FAILED(hr))
return hr;
// Pick a target format
WICPixelFormatGUID targetGuid = {};
if (targetFormat)
{
targetGuid = *targetFormat;
}
else
{
// Screenshots don't typically include the alpha channel of the render target
switch (desc.Format)
{
#if (_WIN32_WINNT >= _WIN32_WINNT_WIN8) || defined(_WIN7_PLATFORM_UPDATE)
case DXGI_FORMAT_R32G32B32A32_FLOAT:
case DXGI_FORMAT_R16G16B16A16_FLOAT:
if (g_WIC2)
{
targetGuid = GUID_WICPixelFormat96bppRGBFloat;
}
else
{
targetGuid = GUID_WICPixelFormat24bppBGR;
}
break;
#endif
case DXGI_FORMAT_R16G16B16A16_UNORM: targetGuid = GUID_WICPixelFormat48bppBGR; break;
case DXGI_FORMAT_B5G5R5A1_UNORM: targetGuid = GUID_WICPixelFormat16bppBGR555; break;
case DXGI_FORMAT_B5G6R5_UNORM: targetGuid = GUID_WICPixelFormat16bppBGR565; break;
case DXGI_FORMAT_R32_FLOAT:
case DXGI_FORMAT_R16_FLOAT:
case DXGI_FORMAT_R16_UNORM:
case DXGI_FORMAT_R8_UNORM:
case DXGI_FORMAT_A8_UNORM:
targetGuid = GUID_WICPixelFormat8bppGray;
break;
default:
targetGuid = GUID_WICPixelFormat24bppBGR;
break;
}
}
hr = frame->SetPixelFormat(&targetGuid);
if (FAILED(hr))
return hr;
if (targetFormat && memcmp(targetFormat, &targetGuid, sizeof(WICPixelFormatGUID)) != 0)
{
// Requested output pixel format is not supported by the WIC codec
return E_FAIL;
}
// Encode WIC metadata
ComPtr<IWICMetadataQueryWriter> metawriter;
if (SUCCEEDED(frame->GetMetadataQueryWriter(metawriter.GetAddressOf())))
{
PROPVARIANT value;
PropVariantInit(&value);
value.vt = VT_LPSTR;
value.pszVal = const_cast<char*>("DirectXTK");
if (memcmp(&guidContainerFormat, &GUID_ContainerFormatPng, sizeof(GUID)) == 0)
{
// Set Software name
std::ignore = metawriter->SetMetadataByName(L"/tEXt/{str=Software}", &value);
// Set sRGB chunk
if (sRGB)
{
value.vt = VT_UI1;
value.bVal = 0;
std::ignore = metawriter->SetMetadataByName(L"/sRGB/RenderingIntent", &value);
}
else
{
// add gAMA chunk with gamma 1.0
value.vt = VT_UI4;
value.uintVal = 100000; // gama value * 100,000 -- i.e. gamma 1.0
std::ignore = metawriter->SetMetadataByName(L"/gAMA/ImageGamma", &value);
// remove sRGB chunk which is added by default.
std::ignore = metawriter->RemoveMetadataByName(L"/sRGB/RenderingIntent");
}
}
else
{
// Set Software name
std::ignore = metawriter->SetMetadataByName(L"System.ApplicationName", &value);
if (sRGB)
{
// Set EXIF Colorspace of sRGB
value.vt = VT_UI2;
value.uiVal = 1;
std::ignore = metawriter->SetMetadataByName(L"System.Image.ColorSpace", &value);
}
}
}
D3D11_MAPPED_SUBRESOURCE mapped;
hr = pContext->Map(pStaging.Get(), 0, D3D11_MAP_READ, 0, &mapped);
if (FAILED(hr))
return hr;
uint64_t imageSize = uint64_t(mapped.RowPitch) * uint64_t(desc.Height);
if (imageSize > UINT32_MAX)
{
pContext->Unmap(pStaging.Get(), 0);
return HRESULT_FROM_WIN32(ERROR_ARITHMETIC_OVERFLOW);
}
if (memcmp(&targetGuid, &pfGuid, sizeof(WICPixelFormatGUID)) != 0)
{
// Conversion required to write
ComPtr<IWICBitmap> source;
hr = pWIC->CreateBitmapFromMemory(desc.Width, desc.Height,
pfGuid,
mapped.RowPitch, static_cast<UINT>(imageSize),
static_cast<BYTE*>(mapped.pData), source.GetAddressOf());
if (FAILED(hr))
{
pContext->Unmap(pStaging.Get(), 0);
return hr;
}
ComPtr<IWICFormatConverter> FC;
hr = pWIC->CreateFormatConverter(FC.GetAddressOf());
if (FAILED(hr))
{
pContext->Unmap(pStaging.Get(), 0);
return hr;
}
BOOL canConvert = FALSE;
hr = FC->CanConvert(pfGuid, targetGuid, &canConvert);
if (FAILED(hr) || !canConvert)
{
pContext->Unmap(pStaging.Get(), 0);
return E_UNEXPECTED;
}
hr = FC->Initialize(source.Get(), targetGuid, WICBitmapDitherTypeNone, nullptr, 0, WICBitmapPaletteTypeMedianCut);
if (FAILED(hr))
{
pContext->Unmap(pStaging.Get(), 0);
return hr;
}
WICRect rect = { 0, 0, static_cast<INT>(desc.Width), static_cast<INT>(desc.Height) };
hr = frame->WriteSource(FC.Get(), &rect);
}
else
{
// No conversion required
hr = frame->WritePixels(desc.Height,
mapped.RowPitch, static_cast<UINT>(imageSize),
static_cast<BYTE*>(mapped.pData));
}
pContext->Unmap(pStaging.Get(), 0);
if (FAILED(hr))
return hr;
hr = frame->Commit();
if (FAILED(hr))
return hr;
hr = encoder->Commit();
if (FAILED(hr))
return hr;
delonfail.clear();
return S_OK;
}
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