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DirectXTex/DDSTextureLoader/DDSTextureLoader12.cpp
Chuck Walbourn 91d783dc22 Reformat code
2020-05-09 17:41:45 -07:00

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//--------------------------------------------------------------------------------------
// File: DDSTextureLoader12.cpp
//
// Functions for loading a DDS texture and creating a Direct3D runtime resource for it
//
// Note these functions are useful as a light-weight runtime loader for DDS files. For
// a full-featured DDS file reader, writer, and texture processing pipeline see
// the 'Texconv' sample and the 'DirectXTex' library.
//
// Copyright (c) Microsoft Corporation. All rights reserved.
// Licensed under the MIT License.
//
// http://go.microsoft.com/fwlink/?LinkId=248926
// http://go.microsoft.com/fwlink/?LinkID=615561
//--------------------------------------------------------------------------------------
#include "DDSTextureLoader12.h"
#include <assert.h>
#include <algorithm>
#include <memory>
#ifdef __clang__
#pragma clang diagnostic ignored "-Wtautological-type-limit-compare"
#pragma clang diagnostic ignored "-Wcovered-switch-default"
#pragma clang diagnostic ignored "-Wswitch"
#pragma clang diagnostic ignored "-Wswitch-enum"
#endif
#pragma warning(disable : 4062)
#define D3DX12_NO_STATE_OBJECT_HELPERS
#include "d3dx12.h"
using namespace DirectX;
//--------------------------------------------------------------------------------------
// 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
//--------------------------------------------------------------------------------------
#pragma pack(push,1)
const uint32_t 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_LUMINANCE 0x00020000 // DDPF_LUMINANCE
#define DDS_ALPHA 0x00000002 // DDPF_ALPHA
#define DDS_BUMPDUDV 0x00080000 // DDPF_BUMPDUDV
#define DDS_HEADER_FLAGS_VOLUME 0x00800000 // DDSD_DEPTH
#define DDS_HEIGHT 0x00000002 // DDSD_HEIGHT
#define DDS_CUBEMAP_POSITIVEX 0x00000600 // DDSCAPS2_CUBEMAP | DDSCAPS2_CUBEMAP_POSITIVEX
#define DDS_CUBEMAP_NEGATIVEX 0x00000a00 // DDSCAPS2_CUBEMAP | DDSCAPS2_CUBEMAP_NEGATIVEX
#define DDS_CUBEMAP_POSITIVEY 0x00001200 // DDSCAPS2_CUBEMAP | DDSCAPS2_CUBEMAP_POSITIVEY
#define DDS_CUBEMAP_NEGATIVEY 0x00002200 // DDSCAPS2_CUBEMAP | DDSCAPS2_CUBEMAP_NEGATIVEY
#define DDS_CUBEMAP_POSITIVEZ 0x00004200 // DDSCAPS2_CUBEMAP | DDSCAPS2_CUBEMAP_POSITIVEZ
#define DDS_CUBEMAP_NEGATIVEZ 0x00008200 // DDSCAPS2_CUBEMAP | DDSCAPS2_CUBEMAP_NEGATIVEZ
#define DDS_CUBEMAP_ALLFACES ( DDS_CUBEMAP_POSITIVEX | DDS_CUBEMAP_NEGATIVEX |\
DDS_CUBEMAP_POSITIVEY | DDS_CUBEMAP_NEGATIVEY |\
DDS_CUBEMAP_POSITIVEZ | DDS_CUBEMAP_NEGATIVEZ )
#define DDS_CUBEMAP 0x00000200 // DDSCAPS2_CUBEMAP
enum DDS_MISC_FLAGS2
{
DDS_MISC_FLAGS2_ALPHA_MODE_MASK = 0x7L,
};
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 miscFlags2;
};
#pragma pack(pop)
//--------------------------------------------------------------------------------------
namespace
{
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; }
template<UINT TNameLength>
inline void SetDebugObjectName(_In_ ID3D12DeviceChild* resource, _In_z_ const wchar_t(&name)[TNameLength]) noexcept
{
#if !defined(NO_D3D12_DEBUG_NAME) && ( defined(_DEBUG) || defined(PROFILE) )
resource->SetName(name);
#else
UNREFERENCED_PARAMETER(resource);
UNREFERENCED_PARAMETER(name);
#endif
}
inline uint32_t CountMips(uint32_t width, uint32_t height) noexcept
{
if (width == 0 || height == 0)
return 0;
uint32_t count = 1;
while (width > 1 || height > 1)
{
width >>= 1;
height >>= 1;
count++;
}
return count;
}
//--------------------------------------------------------------------------------------
HRESULT LoadTextureDataFromMemory(
_In_reads_(ddsDataSize) const uint8_t* ddsData,
size_t ddsDataSize,
const DDS_HEADER** header,
const uint8_t** bitData,
size_t* bitSize) noexcept
{
if (!header || !bitData || !bitSize)
{
return E_POINTER;
}
if (ddsDataSize > UINT32_MAX)
{
return E_FAIL;
}
if (ddsDataSize < (sizeof(uint32_t) + sizeof(DDS_HEADER)))
{
return E_FAIL;
}
// DDS files always start with the same magic number ("DDS ")
auto dwMagicNumber = *reinterpret_cast<const uint32_t*>(ddsData);
if (dwMagicNumber != DDS_MAGIC)
{
return E_FAIL;
}
auto hdr = reinterpret_cast<const DDS_HEADER*>(ddsData + sizeof(uint32_t));
// Verify header to validate DDS file
if (hdr->size != sizeof(DDS_HEADER) ||
hdr->ddspf.size != sizeof(DDS_PIXELFORMAT))
{
return E_FAIL;
}
// Check for DX10 extension
bool bDXT10Header = false;
if ((hdr->ddspf.flags & DDS_FOURCC) &&
(MAKEFOURCC('D', 'X', '1', '0') == hdr->ddspf.fourCC))
{
// Must be long enough for both headers and magic value
if (ddsDataSize < (sizeof(DDS_HEADER) + sizeof(uint32_t) + sizeof(DDS_HEADER_DXT10)))
{
return E_FAIL;
}
bDXT10Header = true;
}
// setup the pointers in the process request
*header = hdr;
auto offset = sizeof(uint32_t)
+ sizeof(DDS_HEADER)
+ (bDXT10Header ? sizeof(DDS_HEADER_DXT10) : 0);
*bitData = ddsData + offset;
*bitSize = ddsDataSize - offset;
return S_OK;
}
//--------------------------------------------------------------------------------------
HRESULT LoadTextureDataFromFile(
_In_z_ const wchar_t* fileName,
std::unique_ptr<uint8_t[]>& ddsData,
const DDS_HEADER** header,
const uint8_t** bitData,
size_t* bitSize) noexcept
{
if (!header || !bitData || !bitSize)
{
return E_POINTER;
}
// open the file
ScopedHandle hFile(safe_handle(CreateFile2(fileName,
GENERIC_READ,
FILE_SHARE_READ,
OPEN_EXISTING,
nullptr)));
if (!hFile)
{
return HRESULT_FROM_WIN32(GetLastError());
}
// Get the file size
FILE_STANDARD_INFO fileInfo;
if (!GetFileInformationByHandleEx(hFile.get(), FileStandardInfo, &fileInfo, sizeof(fileInfo)))
{
return HRESULT_FROM_WIN32(GetLastError());
}
// File is too big for 32-bit allocation, so reject read
if (fileInfo.EndOfFile.HighPart > 0)
{
return E_FAIL;
}
// Need at least enough data to fill the header and magic number to be a valid DDS
if (fileInfo.EndOfFile.LowPart < (sizeof(DDS_HEADER) + sizeof(uint32_t)))
{
return E_FAIL;
}
// create enough space for the file data
ddsData.reset(new (std::nothrow) uint8_t[fileInfo.EndOfFile.LowPart]);
if (!ddsData)
{
return E_OUTOFMEMORY;
}
// read the data in
DWORD BytesRead = 0;
if (!ReadFile(hFile.get(),
ddsData.get(),
fileInfo.EndOfFile.LowPart,
&BytesRead,
nullptr
))
{
return HRESULT_FROM_WIN32(GetLastError());
}
if (BytesRead < fileInfo.EndOfFile.LowPart)
{
return E_FAIL;
}
// DDS files always start with the same magic number ("DDS ")
auto dwMagicNumber = *reinterpret_cast<const uint32_t*>(ddsData.get());
if (dwMagicNumber != DDS_MAGIC)
{
return E_FAIL;
}
auto hdr = reinterpret_cast<const DDS_HEADER*>(ddsData.get() + sizeof(uint32_t));
// Verify header to validate DDS file
if (hdr->size != sizeof(DDS_HEADER) ||
hdr->ddspf.size != sizeof(DDS_PIXELFORMAT))
{
return E_FAIL;
}
// Check for DX10 extension
bool bDXT10Header = false;
if ((hdr->ddspf.flags & DDS_FOURCC) &&
(MAKEFOURCC('D', 'X', '1', '0') == hdr->ddspf.fourCC))
{
// Must be long enough for both headers and magic value
if (fileInfo.EndOfFile.LowPart < (sizeof(DDS_HEADER) + sizeof(uint32_t) + sizeof(DDS_HEADER_DXT10)))
{
return E_FAIL;
}
bDXT10Header = true;
}
// setup the pointers in the process request
*header = hdr;
auto offset = sizeof(uint32_t) + sizeof(DDS_HEADER)
+ (bDXT10Header ? sizeof(DDS_HEADER_DXT10) : 0);
*bitData = ddsData.get() + offset;
*bitSize = fileInfo.EndOfFile.LowPart - offset;
return S_OK;
}
//--------------------------------------------------------------------------------------
// 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:
case DXGI_FORMAT_V408:
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:
case DXGI_FORMAT_P208:
case DXGI_FORMAT_V208:
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_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;
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:
return 8;
default:
return 0;
}
}
//--------------------------------------------------------------------------------------
// Get surface information for a particular format
//--------------------------------------------------------------------------------------
HRESULT GetSurfaceInfo(
_In_ size_t width,
_In_ size_t height,
_In_ DXGI_FORMAT fmt,
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:
case DXGI_FORMAT_P208:
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;
}
//--------------------------------------------------------------------------------------
#define ISBITMASK( r,g,b,a ) ( ddpf.RBitMask == r && ddpf.GBitMask == g && ddpf.BBitMask == b && ddpf.ABitMask == a )
DXGI_FORMAT GetDXGIFormat( const DDS_PIXELFORMAT& ddpf ) noexcept
{
if (ddpf.flags & DDS_RGB)
{
// Note that sRGB formats are written using the "DX10" extended header
switch (ddpf.RGBBitCount)
{
case 32:
if (ISBITMASK(0x000000ff,0x0000ff00,0x00ff0000,0xff000000))
{
return DXGI_FORMAT_R8G8B8A8_UNORM;
}
if (ISBITMASK(0x00ff0000,0x0000ff00,0x000000ff,0xff000000))
{
return DXGI_FORMAT_B8G8R8A8_UNORM;
}
if (ISBITMASK(0x00ff0000,0x0000ff00,0x000000ff,0))
{
return DXGI_FORMAT_B8G8R8X8_UNORM;
}
// No DXGI format maps to ISBITMASK(0x000000ff,0x0000ff00,0x00ff0000,0) aka D3DFMT_X8B8G8R8
// Note that many common DDS reader/writers (including D3DX) swap the
// the RED/BLUE masks for 10:10:10:2 formats. We assume
// below that the 'backwards' header mask is being used since it is most
// likely written by D3DX. The more robust solution is to use the 'DX10'
// header extension and specify the DXGI_FORMAT_R10G10B10A2_UNORM format directly
// For 'correct' writers, this should be 0x000003ff,0x000ffc00,0x3ff00000 for RGB data
if (ISBITMASK(0x3ff00000,0x000ffc00,0x000003ff,0xc0000000))
{
return DXGI_FORMAT_R10G10B10A2_UNORM;
}
// No DXGI format maps to ISBITMASK(0x000003ff,0x000ffc00,0x3ff00000,0xc0000000) aka D3DFMT_A2R10G10B10
if (ISBITMASK(0x0000ffff,0xffff0000,0,0))
{
return DXGI_FORMAT_R16G16_UNORM;
}
if (ISBITMASK(0xffffffff,0,0,0))
{
// Only 32-bit color channel format in D3D9 was R32F
return DXGI_FORMAT_R32_FLOAT; // D3DX writes this out as a FourCC of 114
}
break;
case 24:
// No 24bpp DXGI formats aka D3DFMT_R8G8B8
break;
case 16:
if (ISBITMASK(0x7c00,0x03e0,0x001f,0x8000))
{
return DXGI_FORMAT_B5G5R5A1_UNORM;
}
if (ISBITMASK(0xf800,0x07e0,0x001f,0))
{
return DXGI_FORMAT_B5G6R5_UNORM;
}
// No DXGI format maps to ISBITMASK(0x7c00,0x03e0,0x001f,0) aka D3DFMT_X1R5G5B5
if (ISBITMASK(0x0f00,0x00f0,0x000f,0xf000))
{
return DXGI_FORMAT_B4G4R4A4_UNORM;
}
// No DXGI format maps to ISBITMASK(0x0f00,0x00f0,0x000f,0) aka D3DFMT_X4R4G4B4
// No 3:3:2, 3:3:2:8, or paletted DXGI formats aka D3DFMT_A8R3G3B2, D3DFMT_R3G3B2, D3DFMT_P8, D3DFMT_A8P8, etc.
break;
}
}
else if (ddpf.flags & DDS_LUMINANCE)
{
if (8 == ddpf.RGBBitCount)
{
if (ISBITMASK(0xff,0,0,0))
{
return DXGI_FORMAT_R8_UNORM; // D3DX10/11 writes this out as DX10 extension
}
// No DXGI format maps to ISBITMASK(0x0f,0,0,0xf0) aka D3DFMT_A4L4
if (ISBITMASK(0x00ff, 0, 0, 0xff00))
{
return DXGI_FORMAT_R8G8_UNORM; // Some DDS writers assume the bitcount should be 8 instead of 16
}
}
if (16 == ddpf.RGBBitCount)
{
if (ISBITMASK(0xffff,0,0,0))
{
return DXGI_FORMAT_R16_UNORM; // D3DX10/11 writes this out as DX10 extension
}
if (ISBITMASK(0x00ff,0,0,0xff00))
{
return DXGI_FORMAT_R8G8_UNORM; // D3DX10/11 writes this out as DX10 extension
}
}
}
else if (ddpf.flags & DDS_ALPHA)
{
if (8 == ddpf.RGBBitCount)
{
return DXGI_FORMAT_A8_UNORM;
}
}
else if (ddpf.flags & DDS_BUMPDUDV)
{
if (16 == ddpf.RGBBitCount)
{
if (ISBITMASK(0x00ff, 0xff00, 0, 0))
{
return DXGI_FORMAT_R8G8_SNORM; // D3DX10/11 writes this out as DX10 extension
}
}
if (32 == ddpf.RGBBitCount)
{
if (ISBITMASK(0x000000ff, 0x0000ff00, 0x00ff0000, 0xff000000))
{
return DXGI_FORMAT_R8G8B8A8_SNORM; // D3DX10/11 writes this out as DX10 extension
}
if (ISBITMASK(0x0000ffff, 0xffff0000, 0, 0))
{
return DXGI_FORMAT_R16G16_SNORM; // D3DX10/11 writes this out as DX10 extension
}
// No DXGI format maps to ISBITMASK(0x3ff00000, 0x000ffc00, 0x000003ff, 0xc0000000) aka D3DFMT_A2W10V10U10
}
// No DXGI format maps to DDPF_BUMPLUMINANCE aka D3DFMT_L6V5U5, D3DFMT_X8L8V8U8
}
else if (ddpf.flags & DDS_FOURCC)
{
if (MAKEFOURCC( 'D', 'X', 'T', '1' ) == ddpf.fourCC)
{
return DXGI_FORMAT_BC1_UNORM;
}
if (MAKEFOURCC( 'D', 'X', 'T', '3' ) == ddpf.fourCC)
{
return DXGI_FORMAT_BC2_UNORM;
}
if (MAKEFOURCC( 'D', 'X', 'T', '5' ) == ddpf.fourCC)
{
return DXGI_FORMAT_BC3_UNORM;
}
// While pre-multiplied alpha isn't directly supported by the DXGI formats,
// they are basically the same as these BC formats so they can be mapped
if (MAKEFOURCC( 'D', 'X', 'T', '2' ) == ddpf.fourCC)
{
return DXGI_FORMAT_BC2_UNORM;
}
if (MAKEFOURCC( 'D', 'X', 'T', '4' ) == ddpf.fourCC)
{
return DXGI_FORMAT_BC3_UNORM;
}
if (MAKEFOURCC( 'A', 'T', 'I', '1' ) == ddpf.fourCC)
{
return DXGI_FORMAT_BC4_UNORM;
}
if (MAKEFOURCC( 'B', 'C', '4', 'U' ) == ddpf.fourCC)
{
return DXGI_FORMAT_BC4_UNORM;
}
if (MAKEFOURCC( 'B', 'C', '4', 'S' ) == ddpf.fourCC)
{
return DXGI_FORMAT_BC4_SNORM;
}
if (MAKEFOURCC( 'A', 'T', 'I', '2' ) == ddpf.fourCC)
{
return DXGI_FORMAT_BC5_UNORM;
}
if (MAKEFOURCC( 'B', 'C', '5', 'U' ) == ddpf.fourCC)
{
return DXGI_FORMAT_BC5_UNORM;
}
if (MAKEFOURCC( 'B', 'C', '5', 'S' ) == ddpf.fourCC)
{
return DXGI_FORMAT_BC5_SNORM;
}
// BC6H and BC7 are written using the "DX10" extended header
if (MAKEFOURCC( 'R', 'G', 'B', 'G' ) == ddpf.fourCC)
{
return DXGI_FORMAT_R8G8_B8G8_UNORM;
}
if (MAKEFOURCC( 'G', 'R', 'G', 'B' ) == ddpf.fourCC)
{
return DXGI_FORMAT_G8R8_G8B8_UNORM;
}
if (MAKEFOURCC('Y','U','Y','2') == ddpf.fourCC)
{
return DXGI_FORMAT_YUY2;
}
// Check for D3DFORMAT enums being set here
switch( ddpf.fourCC )
{
case 36: // D3DFMT_A16B16G16R16
return DXGI_FORMAT_R16G16B16A16_UNORM;
case 110: // D3DFMT_Q16W16V16U16
return DXGI_FORMAT_R16G16B16A16_SNORM;
case 111: // D3DFMT_R16F
return DXGI_FORMAT_R16_FLOAT;
case 112: // D3DFMT_G16R16F
return DXGI_FORMAT_R16G16_FLOAT;
case 113: // D3DFMT_A16B16G16R16F
return DXGI_FORMAT_R16G16B16A16_FLOAT;
case 114: // D3DFMT_R32F
return DXGI_FORMAT_R32_FLOAT;
case 115: // D3DFMT_G32R32F
return DXGI_FORMAT_R32G32_FLOAT;
case 116: // D3DFMT_A32B32G32R32F
return DXGI_FORMAT_R32G32B32A32_FLOAT;
// No DXGI format maps to D3DFMT_CxV8U8
}
}
return DXGI_FORMAT_UNKNOWN;
}
#undef ISBITMASK
//--------------------------------------------------------------------------------------
DXGI_FORMAT MakeSRGB( _In_ DXGI_FORMAT format ) noexcept
{
switch( format )
{
case DXGI_FORMAT_R8G8B8A8_UNORM:
return DXGI_FORMAT_R8G8B8A8_UNORM_SRGB;
case DXGI_FORMAT_BC1_UNORM:
return DXGI_FORMAT_BC1_UNORM_SRGB;
case DXGI_FORMAT_BC2_UNORM:
return DXGI_FORMAT_BC2_UNORM_SRGB;
case DXGI_FORMAT_BC3_UNORM:
return DXGI_FORMAT_BC3_UNORM_SRGB;
case DXGI_FORMAT_B8G8R8A8_UNORM:
return DXGI_FORMAT_B8G8R8A8_UNORM_SRGB;
case DXGI_FORMAT_B8G8R8X8_UNORM:
return DXGI_FORMAT_B8G8R8X8_UNORM_SRGB;
case DXGI_FORMAT_BC7_UNORM:
return DXGI_FORMAT_BC7_UNORM_SRGB;
default:
return format;
}
}
//--------------------------------------------------------------------------------------
inline bool IsDepthStencil(DXGI_FORMAT fmt) noexcept
{
switch (fmt)
{
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_D32_FLOAT:
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_D16_UNORM:
return true;
default:
return false;
}
}
//--------------------------------------------------------------------------------------
inline void AdjustPlaneResource(
_In_ DXGI_FORMAT fmt,
_In_ size_t height,
_In_ size_t slicePlane,
_Inout_ D3D12_SUBRESOURCE_DATA& res) noexcept
{
switch (fmt)
{
case DXGI_FORMAT_NV12:
case DXGI_FORMAT_P010:
case DXGI_FORMAT_P016:
if (!slicePlane)
{
// Plane 0
res.SlicePitch = res.RowPitch * static_cast<LONG>(height);
}
else
{
// Plane 1
res.pData = reinterpret_cast<const uint8_t*>(res.pData) + uintptr_t(res.RowPitch) * height;
res.SlicePitch = res.RowPitch * ((static_cast<LONG>(height) + 1) >> 1);
}
break;
case DXGI_FORMAT_NV11:
if (!slicePlane)
{
// Plane 0
res.SlicePitch = res.RowPitch * static_cast<LONG>(height);
}
else
{
// Plane 1
res.pData = reinterpret_cast<const uint8_t*>(res.pData) + uintptr_t(res.RowPitch) * height;
res.RowPitch = (res.RowPitch >> 1);
res.SlicePitch = res.RowPitch * static_cast<LONG>(height);
}
break;
}
}
//--------------------------------------------------------------------------------------
HRESULT FillInitData(_In_ size_t width,
_In_ size_t height,
_In_ size_t depth,
_In_ size_t mipCount,
_In_ size_t arraySize,
_In_ size_t numberOfPlanes,
_In_ DXGI_FORMAT format,
_In_ size_t maxsize,
_In_ size_t bitSize,
_In_reads_bytes_(bitSize) const uint8_t* bitData,
_Out_ size_t& twidth,
_Out_ size_t& theight,
_Out_ size_t& tdepth,
_Out_ size_t& skipMip,
std::vector<D3D12_SUBRESOURCE_DATA>& initData)
{
if (!bitData)
{
return E_POINTER;
}
skipMip = 0;
twidth = 0;
theight = 0;
tdepth = 0;
size_t NumBytes = 0;
size_t RowBytes = 0;
const uint8_t* pEndBits = bitData + bitSize;
initData.clear();
for (size_t p = 0; p < numberOfPlanes; ++p)
{
const uint8_t* pSrcBits = bitData;
for (size_t j = 0; j < arraySize; j++)
{
size_t w = width;
size_t h = height;
size_t d = depth;
for (size_t i = 0; i < mipCount; i++)
{
HRESULT hr = GetSurfaceInfo(w, h, format, &NumBytes, &RowBytes, nullptr);
if (FAILED(hr))
return hr;
if (NumBytes > UINT32_MAX || RowBytes > UINT32_MAX)
return HRESULT_FROM_WIN32(ERROR_ARITHMETIC_OVERFLOW);
if ((mipCount <= 1) || !maxsize || (w <= maxsize && h <= maxsize && d <= maxsize))
{
if (!twidth)
{
twidth = w;
theight = h;
tdepth = d;
}
D3D12_SUBRESOURCE_DATA res =
{
pSrcBits,
static_cast<LONG_PTR>(RowBytes),
static_cast<LONG_PTR>(NumBytes)
};
AdjustPlaneResource(format, h, p, res);
initData.emplace_back(res);
}
else if (!j)
{
// Count number of skipped mipmaps (first item only)
++skipMip;
}
if (pSrcBits + (NumBytes*d) > pEndBits)
{
return HRESULT_FROM_WIN32(ERROR_HANDLE_EOF);
}
pSrcBits += NumBytes * d;
w = w >> 1;
h = h >> 1;
d = d >> 1;
if (w == 0)
{
w = 1;
}
if (h == 0)
{
h = 1;
}
if (d == 0)
{
d = 1;
}
}
}
}
return initData.empty() ? E_FAIL : S_OK;
}
//--------------------------------------------------------------------------------------
HRESULT CreateTextureResource(
_In_ ID3D12Device* d3dDevice,
D3D12_RESOURCE_DIMENSION resDim,
size_t width,
size_t height,
size_t depth,
size_t mipCount,
size_t arraySize,
DXGI_FORMAT format,
D3D12_RESOURCE_FLAGS resFlags,
unsigned int loadFlags,
_Outptr_ ID3D12Resource** texture) noexcept
{
if (!d3dDevice)
return E_POINTER;
HRESULT hr = E_FAIL;
if (loadFlags & DDS_LOADER_FORCE_SRGB)
{
format = MakeSRGB(format);
}
D3D12_RESOURCE_DESC desc = {};
desc.Width = static_cast<UINT>(width);
desc.Height = static_cast<UINT>(height);
desc.MipLevels = static_cast<UINT16>(mipCount);
desc.DepthOrArraySize = (resDim == D3D12_RESOURCE_DIMENSION_TEXTURE3D) ? static_cast<UINT16>(depth) : static_cast<UINT16>(arraySize);
desc.Format = format;
desc.Flags = resFlags;
desc.SampleDesc.Count = 1;
desc.SampleDesc.Quality = 0;
desc.Dimension = resDim;
CD3DX12_HEAP_PROPERTIES defaultHeapProperties(D3D12_HEAP_TYPE_DEFAULT);
hr = d3dDevice->CreateCommittedResource(
&defaultHeapProperties,
D3D12_HEAP_FLAG_NONE,
&desc,
D3D12_RESOURCE_STATE_COPY_DEST,
nullptr,
IID_ID3D12Resource, reinterpret_cast<void**>(texture));
if (SUCCEEDED(hr))
{
assert(texture != nullptr && *texture != nullptr);
_Analysis_assume_(texture != nullptr && *texture != nullptr);
SetDebugObjectName(*texture, L"DDSTextureLoader");
}
return hr;
}
//--------------------------------------------------------------------------------------
HRESULT CreateTextureFromDDS(_In_ ID3D12Device* d3dDevice,
_In_ const DDS_HEADER* header,
_In_reads_bytes_(bitSize) const uint8_t* bitData,
size_t bitSize,
size_t maxsize,
D3D12_RESOURCE_FLAGS resFlags,
unsigned int loadFlags,
_Outptr_ ID3D12Resource** texture,
std::vector<D3D12_SUBRESOURCE_DATA>& subresources,
_Out_opt_ bool* outIsCubeMap) noexcept(false)
{
HRESULT hr = S_OK;
UINT width = header->width;
UINT height = header->height;
UINT depth = header->depth;
D3D12_RESOURCE_DIMENSION resDim = D3D12_RESOURCE_DIMENSION_UNKNOWN;
UINT arraySize = 1;
DXGI_FORMAT format = DXGI_FORMAT_UNKNOWN;
bool isCubeMap = false;
size_t mipCount = header->mipMapCount;
if (0 == mipCount)
{
mipCount = 1;
}
if ((header->ddspf.flags & DDS_FOURCC) &&
(MAKEFOURCC('D', 'X', '1', '0') == header->ddspf.fourCC))
{
auto d3d10ext = reinterpret_cast<const DDS_HEADER_DXT10*>(reinterpret_cast<const char*>(header) + sizeof(DDS_HEADER));
arraySize = d3d10ext->arraySize;
if (arraySize == 0)
{
return HRESULT_FROM_WIN32(ERROR_INVALID_DATA);
}
switch (d3d10ext->dxgiFormat)
{
case DXGI_FORMAT_AI44:
case DXGI_FORMAT_IA44:
case DXGI_FORMAT_P8:
case DXGI_FORMAT_A8P8:
return HRESULT_FROM_WIN32(ERROR_NOT_SUPPORTED);
default:
if (BitsPerPixel(d3d10ext->dxgiFormat) == 0)
{
return HRESULT_FROM_WIN32(ERROR_NOT_SUPPORTED);
}
}
format = d3d10ext->dxgiFormat;
switch (d3d10ext->resourceDimension)
{
case D3D12_RESOURCE_DIMENSION_TEXTURE1D:
// D3DX writes 1D textures with a fixed Height of 1
if ((header->flags & DDS_HEIGHT) && height != 1)
{
return HRESULT_FROM_WIN32(ERROR_INVALID_DATA);
}
height = depth = 1;
break;
case D3D12_RESOURCE_DIMENSION_TEXTURE2D:
if (d3d10ext->miscFlag & 0x4 /* RESOURCE_MISC_TEXTURECUBE */)
{
arraySize *= 6;
isCubeMap = true;
}
depth = 1;
break;
case D3D12_RESOURCE_DIMENSION_TEXTURE3D:
if (!(header->flags & DDS_HEADER_FLAGS_VOLUME))
{
return HRESULT_FROM_WIN32(ERROR_INVALID_DATA);
}
if (arraySize > 1)
{
return HRESULT_FROM_WIN32(ERROR_NOT_SUPPORTED);
}
break;
default:
return HRESULT_FROM_WIN32(ERROR_NOT_SUPPORTED);
}
resDim = static_cast<D3D12_RESOURCE_DIMENSION>(d3d10ext->resourceDimension);
}
else
{
format = GetDXGIFormat(header->ddspf);
if (format == DXGI_FORMAT_UNKNOWN)
{
return HRESULT_FROM_WIN32(ERROR_NOT_SUPPORTED);
}
if (header->flags & DDS_HEADER_FLAGS_VOLUME)
{
resDim = D3D12_RESOURCE_DIMENSION_TEXTURE3D;
}
else
{
if (header->caps2 & DDS_CUBEMAP)
{
// We require all six faces to be defined
if ((header->caps2 & DDS_CUBEMAP_ALLFACES) != DDS_CUBEMAP_ALLFACES)
{
return HRESULT_FROM_WIN32(ERROR_NOT_SUPPORTED);
}
arraySize = 6;
isCubeMap = true;
}
depth = 1;
resDim = D3D12_RESOURCE_DIMENSION_TEXTURE2D;
// Note there's no way for a legacy Direct3D 9 DDS to express a '1D' texture
}
assert(BitsPerPixel(format) != 0);
}
// Bound sizes (for security purposes we don't trust DDS file metadata larger than the Direct3D hardware requirements)
if (mipCount > D3D12_REQ_MIP_LEVELS)
{
return HRESULT_FROM_WIN32(ERROR_NOT_SUPPORTED);
}
switch (resDim)
{
case D3D12_RESOURCE_DIMENSION_TEXTURE1D:
if ((arraySize > D3D12_REQ_TEXTURE1D_ARRAY_AXIS_DIMENSION) ||
(width > D3D12_REQ_TEXTURE1D_U_DIMENSION))
{
return HRESULT_FROM_WIN32(ERROR_NOT_SUPPORTED);
}
break;
case D3D12_RESOURCE_DIMENSION_TEXTURE2D:
if (isCubeMap)
{
// This is the right bound because we set arraySize to (NumCubes*6) above
if ((arraySize > D3D12_REQ_TEXTURE2D_ARRAY_AXIS_DIMENSION) ||
(width > D3D12_REQ_TEXTURECUBE_DIMENSION) ||
(height > D3D12_REQ_TEXTURECUBE_DIMENSION))
{
return HRESULT_FROM_WIN32(ERROR_NOT_SUPPORTED);
}
}
else if ((arraySize > D3D12_REQ_TEXTURE2D_ARRAY_AXIS_DIMENSION) ||
(width > D3D12_REQ_TEXTURE2D_U_OR_V_DIMENSION) ||
(height > D3D12_REQ_TEXTURE2D_U_OR_V_DIMENSION))
{
return HRESULT_FROM_WIN32(ERROR_NOT_SUPPORTED);
}
break;
case D3D12_RESOURCE_DIMENSION_TEXTURE3D:
if ((arraySize > 1) ||
(width > D3D12_REQ_TEXTURE3D_U_V_OR_W_DIMENSION) ||
(height > D3D12_REQ_TEXTURE3D_U_V_OR_W_DIMENSION) ||
(depth > D3D12_REQ_TEXTURE3D_U_V_OR_W_DIMENSION))
{
return HRESULT_FROM_WIN32(ERROR_NOT_SUPPORTED);
}
break;
default:
return HRESULT_FROM_WIN32(ERROR_NOT_SUPPORTED);
}
UINT numberOfPlanes = D3D12GetFormatPlaneCount(d3dDevice, format);
if (!numberOfPlanes)
return E_INVALIDARG;
if ((numberOfPlanes > 1) && IsDepthStencil(format))
{
// DirectX 12 uses planes for stencil, DirectX 11 does not
return HRESULT_FROM_WIN32(ERROR_NOT_SUPPORTED);
}
if (outIsCubeMap != nullptr)
{
*outIsCubeMap = isCubeMap;
}
// Create the texture
size_t numberOfResources = (resDim == D3D12_RESOURCE_DIMENSION_TEXTURE3D)
? 1 : arraySize;
numberOfResources *= mipCount;
numberOfResources *= numberOfPlanes;
if (numberOfResources > D3D12_REQ_SUBRESOURCES)
return E_INVALIDARG;
subresources.reserve(numberOfResources);
size_t skipMip = 0;
size_t twidth = 0;
size_t theight = 0;
size_t tdepth = 0;
hr = FillInitData(width, height, depth, mipCount, arraySize,
numberOfPlanes, format,
maxsize, bitSize, bitData,
twidth, theight, tdepth, skipMip, subresources);
if (SUCCEEDED(hr))
{
size_t reservedMips = mipCount;
if (loadFlags & DDS_LOADER_MIP_RESERVE)
{
reservedMips = std::min<size_t>(D3D12_REQ_MIP_LEVELS,
CountMips(width, height));
}
hr = CreateTextureResource(d3dDevice, resDim, twidth, theight, tdepth, reservedMips - skipMip, arraySize,
format, resFlags, loadFlags, texture);
if (FAILED(hr) && !maxsize && (mipCount > 1))
{
subresources.clear();
maxsize = static_cast<size_t>(
(resDim == D3D12_RESOURCE_DIMENSION_TEXTURE3D)
? D3D12_REQ_TEXTURE3D_U_V_OR_W_DIMENSION
: D3D12_REQ_TEXTURE2D_U_OR_V_DIMENSION);
hr = FillInitData(width, height, depth, mipCount, arraySize,
numberOfPlanes, format,
maxsize, bitSize, bitData,
twidth, theight, tdepth, skipMip, subresources);
if (SUCCEEDED(hr))
{
hr = CreateTextureResource(d3dDevice, resDim, twidth, theight, tdepth, mipCount - skipMip, arraySize,
format, resFlags, loadFlags, texture);
}
}
}
if (FAILED(hr))
{
subresources.clear();
}
return hr;
}
//--------------------------------------------------------------------------------------
DDS_ALPHA_MODE GetAlphaMode( _In_ const DDS_HEADER* header ) noexcept
{
if ( header->ddspf.flags & DDS_FOURCC )
{
if ( MAKEFOURCC( 'D', 'X', '1', '0' ) == header->ddspf.fourCC )
{
auto d3d10ext = reinterpret_cast<const DDS_HEADER_DXT10*>(reinterpret_cast<const uint8_t*>(header) + sizeof(DDS_HEADER));
auto mode = static_cast<DDS_ALPHA_MODE>( d3d10ext->miscFlags2 & DDS_MISC_FLAGS2_ALPHA_MODE_MASK );
switch( mode )
{
case DDS_ALPHA_MODE_STRAIGHT:
case DDS_ALPHA_MODE_PREMULTIPLIED:
case DDS_ALPHA_MODE_OPAQUE:
case DDS_ALPHA_MODE_CUSTOM:
return mode;
case DDS_ALPHA_MODE_UNKNOWN:
default:
break;
}
}
else if ( ( MAKEFOURCC( 'D', 'X', 'T', '2' ) == header->ddspf.fourCC )
|| ( MAKEFOURCC( 'D', 'X', 'T', '4' ) == header->ddspf.fourCC ) )
{
return DDS_ALPHA_MODE_PREMULTIPLIED;
}
}
return DDS_ALPHA_MODE_UNKNOWN;
}
//--------------------------------------------------------------------------------------
void SetDebugTextureInfo(
_In_z_ const wchar_t* fileName,
_In_ ID3D12Resource** texture) noexcept
{
#if !defined(NO_D3D12_DEBUG_NAME) && ( defined(_DEBUG) || defined(PROFILE) )
if (texture && *texture)
{
const wchar_t* pstrName = wcsrchr(fileName, '\\');
if (!pstrName)
{
pstrName = fileName;
}
else
{
pstrName++;
}
(*texture)->SetName(pstrName);
}
#else
UNREFERENCED_PARAMETER(fileName);
UNREFERENCED_PARAMETER(texture);
#endif
}
} // anonymous namespace
//--------------------------------------------------------------------------------------
_Use_decl_annotations_
HRESULT DirectX::LoadDDSTextureFromMemory(
ID3D12Device* d3dDevice,
const uint8_t* ddsData,
size_t ddsDataSize,
ID3D12Resource** texture,
std::vector<D3D12_SUBRESOURCE_DATA>& subresources,
size_t maxsize,
DDS_ALPHA_MODE* alphaMode,
bool* isCubeMap)
{
return LoadDDSTextureFromMemoryEx(
d3dDevice,
ddsData,
ddsDataSize,
maxsize,
D3D12_RESOURCE_FLAG_NONE,
DDS_LOADER_DEFAULT,
texture,
subresources,
alphaMode,
isCubeMap);
}
_Use_decl_annotations_
HRESULT DirectX::LoadDDSTextureFromMemoryEx(
ID3D12Device* d3dDevice,
const uint8_t* ddsData,
size_t ddsDataSize,
size_t maxsize,
D3D12_RESOURCE_FLAGS resFlags,
unsigned int loadFlags,
ID3D12Resource** texture,
std::vector<D3D12_SUBRESOURCE_DATA>& subresources,
DDS_ALPHA_MODE* alphaMode,
bool* isCubeMap)
{
if (texture)
{
*texture = nullptr;
}
if (alphaMode)
{
*alphaMode = DDS_ALPHA_MODE_UNKNOWN;
}
if (isCubeMap)
{
*isCubeMap = false;
}
if (!d3dDevice || !ddsData || !texture)
{
return E_INVALIDARG;
}
// Validate DDS file in memory
const DDS_HEADER* header = nullptr;
const uint8_t* bitData = nullptr;
size_t bitSize = 0;
HRESULT hr = LoadTextureDataFromMemory(ddsData,
ddsDataSize,
&header,
&bitData,
&bitSize
);
if (FAILED(hr))
{
return hr;
}
hr = CreateTextureFromDDS(d3dDevice,
header, bitData, bitSize, maxsize,
resFlags, loadFlags,
texture, subresources, isCubeMap);
if (SUCCEEDED(hr))
{
if (texture && *texture)
{
SetDebugObjectName(*texture, L"DDSTextureLoader");
}
if (alphaMode)
*alphaMode = GetAlphaMode(header);
}
return hr;
}
//--------------------------------------------------------------------------------------
_Use_decl_annotations_
HRESULT DirectX::LoadDDSTextureFromFile(
ID3D12Device* d3dDevice,
const wchar_t* fileName,
ID3D12Resource** texture,
std::unique_ptr<uint8_t[]>& ddsData,
std::vector<D3D12_SUBRESOURCE_DATA>& subresources,
size_t maxsize,
DDS_ALPHA_MODE* alphaMode,
bool* isCubeMap)
{
return LoadDDSTextureFromFileEx(
d3dDevice,
fileName,
maxsize,
D3D12_RESOURCE_FLAG_NONE,
DDS_LOADER_DEFAULT,
texture,
ddsData,
subresources,
alphaMode,
isCubeMap);
}
_Use_decl_annotations_
HRESULT DirectX::LoadDDSTextureFromFileEx(
ID3D12Device* d3dDevice,
const wchar_t* fileName,
size_t maxsize,
D3D12_RESOURCE_FLAGS resFlags,
unsigned int loadFlags,
ID3D12Resource** texture,
std::unique_ptr<uint8_t[]>& ddsData,
std::vector<D3D12_SUBRESOURCE_DATA>& subresources,
DDS_ALPHA_MODE* alphaMode,
bool* isCubeMap)
{
if (texture)
{
*texture = nullptr;
}
if (alphaMode)
{
*alphaMode = DDS_ALPHA_MODE_UNKNOWN;
}
if (isCubeMap)
{
*isCubeMap = false;
}
if (!d3dDevice || !fileName || !texture)
{
return E_INVALIDARG;
}
const DDS_HEADER* header = nullptr;
const uint8_t* bitData = nullptr;
size_t bitSize = 0;
HRESULT hr = LoadTextureDataFromFile(fileName,
ddsData,
&header,
&bitData,
&bitSize
);
if (FAILED(hr))
{
return hr;
}
hr = CreateTextureFromDDS(d3dDevice,
header, bitData, bitSize, maxsize,
resFlags, loadFlags,
texture, subresources, isCubeMap);
if (SUCCEEDED(hr))
{
SetDebugTextureInfo(fileName, texture);
if (alphaMode)
*alphaMode = GetAlphaMode(header);
}
return hr;
}
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