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DDSTextureLoader.cpp
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DDSTextureLoader.cpp
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//--------------------------------------------------------------------------------------
// File: DDSTextureLoader.cpp
//
// Function for loading a DDS texture and creating a Direct3D 11 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.
//
// THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF
// ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO
// THE IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A
// PARTICULAR PURPOSE.
//
// Copyright (c) Microsoft Corporation. All rights reserved.
//
// http://go.microsoft.com/fwlink/?LinkId=248926
// http://go.microsoft.com/fwlink/?LinkId=248929
//--------------------------------------------------------------------------------------"
#include <dxgiformat.h>
#include <assert.h>
#include <algorithm>
#include <memory>
#include "DDSTextureLoader.h"
// fix for win 7 machines
//#undef _WIN32_WINNT
//#define _WIN32_WINNT _WIN32_WINNT_WIN7
#if (_WIN32_WINNT >= 0x0602 /*_WIN32_WINNT_WIN8*/) && !defined(DXGI_1_2_FORMATS)
#define DXGI_1_2_FORMATS
#endif
//--------------------------------------------------------------------------------------
// 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)
#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_PAL8 0x00000020 // DDPF_PALETTEINDEXED8
#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_VOLUME 0x00800000 // DDSD_DEPTH
#define DDS_HEADER_FLAGS_PITCH 0x00000008 // DDSD_PITCH
#define DDS_HEADER_FLAGS_LINEARSIZE 0x00080000 // DDSD_LINEARSIZE
#define DDS_HEIGHT 0x00000002 // DDSD_HEIGHT
#define DDS_WIDTH 0x00000004 // DDSD_WIDTH
#define DDS_SURFACE_FLAGS_TEXTURE 0x00001000 // DDSCAPS_TEXTURE
#define DDS_SURFACE_FLAGS_MIPMAP 0x00400008 // DDSCAPS_COMPLEX | DDSCAPS_MIPMAP
#define DDS_SURFACE_FLAGS_CUBEMAP 0x00000008 // DDSCAPS_COMPLEX
#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
#define DDS_FLAGS_VOLUME 0x00200000 // DDSCAPS2_VOLUME
typedef struct
{
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;
} DDS_HEADER;
typedef struct
{
DXGI_FORMAT dxgiFormat;
uint32_t resourceDimension;
uint32_t miscFlag; // see D3D11_RESOURCE_MISC_FLAG
uint32_t arraySize;
uint32_t reserved;
} DDS_HEADER_DXT10;
#pragma pack(pop)
//---------------------------------------------------------------------------------
struct handle_closer { void operator()(HANDLE h) { if (h) CloseHandle(h); } };
typedef public std::unique_ptr<void, handle_closer> ScopedHandle;
inline HANDLE safe_handle( HANDLE h ) { return (h == INVALID_HANDLE_VALUE) ? 0 : h; }
//--------------------------------------------------------------------------------------
static HRESULT LoadTextureDataFromFile( _In_z_ const wchar_t* fileName,
std::unique_ptr<uint8_t[]>& ddsData,
DDS_HEADER** header,
uint8_t** bitData,
size_t* bitSize
)
{
if (!header || !bitData || !bitSize)
{
return E_POINTER;
}
// open the file
#if (_WIN32_WINNT >= 0x0602 /*_WIN32_WINNT_WIN8*/)
ScopedHandle hFile( safe_handle( CreateFile2( fileName,
GENERIC_READ,
FILE_SHARE_READ,
OPEN_EXISTING,
nullptr ) ) );
#else
ScopedHandle hFile( safe_handle( CreateFileW( fileName,
GENERIC_READ,
FILE_SHARE_READ,
nullptr,
OPEN_EXISTING,
FILE_ATTRIBUTE_NORMAL,
nullptr ) ) );
#endif
if ( !hFile )
{
return HRESULT_FROM_WIN32( GetLastError() );
}
// Get the file size
LARGE_INTEGER FileSize = { 0 };
#if (_WIN32_WINNT >= _WIN32_WINNT_VISTA)
FILE_STANDARD_INFO fileInfo;
if ( !GetFileInformationByHandleEx( hFile.get(), FileStandardInfo, &fileInfo, sizeof(fileInfo) ) )
{
return HRESULT_FROM_WIN32( GetLastError() );
}
FileSize = fileInfo.EndOfFile;
#else
GetFileSizeEx( hFile.get(), &FileSize );
#endif
// File is too big for 32-bit allocation, so reject read
if (FileSize.HighPart > 0)
{
return E_FAIL;
}
// Need at least enough data to fill the header and magic number to be a valid DDS
if (FileSize.LowPart < ( sizeof(DDS_HEADER) + sizeof(uint32_t) ) )
{
return E_FAIL;
}
// create enough space for the file data
ddsData.reset( new uint8_t[ FileSize.LowPart ] );
if (!ddsData )
{
return E_OUTOFMEMORY;
}
// read the data in
DWORD BytesRead = 0;
if (!ReadFile( hFile.get(),
ddsData.get(),
FileSize.LowPart,
&BytesRead,
nullptr
))
{
return HRESULT_FROM_WIN32( GetLastError() );
}
if (BytesRead < FileSize.LowPart)
{
return E_FAIL;
}
// DDS files always start with the same magic number ("DDS ")
uint32_t dwMagicNumber = *( const uint32_t* )( ddsData.get() );
if (dwMagicNumber != DDS_MAGIC)
{
return E_FAIL;
}
DDS_HEADER* hdr = reinterpret_cast<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 (FileSize.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;
ptrdiff_t offset = sizeof( uint32_t ) + sizeof( DDS_HEADER )
+ (bDXT10Header ? sizeof( DDS_HEADER_DXT10 ) : 0);
*bitData = ddsData.get() + offset;
*bitSize = FileSize.LowPart - offset;
return S_OK;
}
//--------------------------------------------------------------------------------------
// Return the BPP for a particular format
//--------------------------------------------------------------------------------------
static size_t BitsPerPixel( _In_ DXGI_FORMAT fmt )
{
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:
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:
return 32;
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:
#ifdef DXGI_1_2_FORMATS
case DXGI_FORMAT_B4G4R4A4_UNORM:
#endif
return 16;
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:
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
//--------------------------------------------------------------------------------------
static void 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 )
{
size_t numBytes = 0;
size_t rowBytes = 0;
size_t numRows = 0;
bool bc = false;
bool packed = false;
size_t bcnumBytesPerBlock = 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;
bcnumBytesPerBlock = 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;
bcnumBytesPerBlock = 16;
break;
case DXGI_FORMAT_R8G8_B8G8_UNORM:
case DXGI_FORMAT_G8R8_G8B8_UNORM:
packed = true;
break;
}
if (bc)
{
size_t numBlocksWide = 0;
if (width > 0)
{
numBlocksWide = std::max<size_t>( 1, (width + 3) / 4 );
}
size_t numBlocksHigh = 0;
if (height > 0)
{
numBlocksHigh = std::max<size_t>( 1, (height + 3) / 4 );
}
rowBytes = numBlocksWide * bcnumBytesPerBlock;
numRows = numBlocksHigh;
}
else if (packed)
{
rowBytes = ( ( width + 1 ) >> 1 ) * 4;
numRows = height;
}
else
{
size_t bpp = BitsPerPixel( fmt );
rowBytes = ( width * bpp + 7 ) / 8; // round up to nearest byte
numRows = height;
}
numBytes = rowBytes * numRows;
if (outNumBytes)
{
*outNumBytes = numBytes;
}
if (outRowBytes)
{
*outRowBytes = rowBytes;
}
if (outNumRows)
{
*outNumRows = numRows;
}
}
//--------------------------------------------------------------------------------------
#define ISBITMASK( r,g,b,a ) ( ddpf.RBitMask == r && ddpf.GBitMask == g && ddpf.BBitMask == b && ddpf.ABitMask == a )
static DXGI_FORMAT GetDXGIFormat( const DDS_PIXELFORMAT& ddpf )
{
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,0x00000000))
{
return DXGI_FORMAT_B8G8R8X8_UNORM;
}
// No DXGI format maps to ISBITMASK(0x000000ff,0x0000ff00,0x00ff0000,0x00000000) 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 assumme
// 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,0xffff0000,0x00000000,0x00000000))
{
return DXGI_FORMAT_R16G16_UNORM;
}
if (ISBITMASK(0xffffffff,0x00000000,0x00000000,0x00000000))
{
// 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,0x0000))
{
return DXGI_FORMAT_B5G6R5_UNORM;
}
// No DXGI format maps to ISBITMASK(0x7c00,0x03e0,0x001f,0x0000) aka D3DFMT_X1R5G5B5
#ifdef DXGI_1_2_FORMATS
if (ISBITMASK(0x0f00,0x00f0,0x000f,0xf000))
{
return DXGI_FORMAT_B4G4R4A4_UNORM;
}
// No DXGI format maps to ISBITMASK(0x0f00,0x00f0,0x000f,0x0000) aka D3DFMT_X4R4G4B4
#endif
// 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(0x000000ff,0x00000000,0x00000000,0x00000000))
{
return DXGI_FORMAT_R8_UNORM; // D3DX10/11 writes this out as DX10 extension
}
// No DXGI format maps to ISBITMASK(0x0f,0x00,0x00,0xf0) aka D3DFMT_A4L4
}
if (16 == ddpf.RGBBitCount)
{
if (ISBITMASK(0x0000ffff,0x00000000,0x00000000,0x00000000))
{
return DXGI_FORMAT_R16_UNORM; // D3DX10/11 writes this out as DX10 extension
}
if (ISBITMASK(0x000000ff,0x00000000,0x00000000,0x0000ff00))
{
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_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-mulitplied 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;
}
// 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;
}
}
return DXGI_FORMAT_UNKNOWN;
}
//--------------------------------------------------------------------------------------
static HRESULT FillInitData( _In_ size_t width,
_In_ size_t height,
_In_ size_t depth,
_In_ size_t mipCount,
_In_ size_t arraySize,
_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,
_Out_writes_(mipCount*arraySize) D3D11_SUBRESOURCE_DATA* initData )
{
if ( !bitData || !initData )
return E_POINTER;
skipMip = 0;
twidth = 0;
theight = 0;
tdepth = 0;
size_t NumBytes = 0;
size_t RowBytes = 0;
size_t NumRows = 0;
const uint8_t* pSrcBits = bitData;
const uint8_t* pEndBits = bitData + bitSize;
size_t index = 0;
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++ )
{
GetSurfaceInfo( w,
h,
format,
&NumBytes,
&RowBytes,
&NumRows
);
if ( (mipCount <= 1) || !maxsize || (w <= maxsize && h <= maxsize && d <= maxsize) )
{
if ( !twidth )
{
twidth = w;
theight = h;
tdepth = d;
}
initData[index].pSysMem = ( const void* )pSrcBits;
initData[index].SysMemPitch = static_cast<UINT>( RowBytes );
initData[index].SysMemSlicePitch = static_cast<UINT>( NumBytes );
++index;
}
else
++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 (index > 0) ? S_OK : E_FAIL;
}
//--------------------------------------------------------------------------------------
static HRESULT CreateD3DResources( _In_ ID3D11Device* d3dDevice,
_In_ uint32_t resDim,
_In_ size_t width,
_In_ size_t height,
_In_ size_t depth,
_In_ size_t mipCount,
_In_ size_t arraySize,
_In_ DXGI_FORMAT format,
_In_ bool isCubeMap,
_In_reads_(mipCount*arraySize) D3D11_SUBRESOURCE_DATA* initData,
_Out_opt_ ID3D11Resource** texture,
_Out_opt_ ID3D11ShaderResourceView** textureView )
{
if ( !d3dDevice || !initData )
return E_POINTER;
HRESULT hr = E_FAIL;
switch ( resDim )
{
case D3D11_RESOURCE_DIMENSION_TEXTURE1D:
{
D3D11_TEXTURE1D_DESC desc;
desc.Width = static_cast<UINT>( width );
desc.MipLevels = static_cast<UINT>( mipCount );
desc.ArraySize = static_cast<UINT>( arraySize );
desc.Format = format;
desc.Usage = D3D11_USAGE_DEFAULT;
desc.BindFlags = D3D11_BIND_SHADER_RESOURCE;
desc.CPUAccessFlags = 0;
desc.MiscFlags = 0;
ID3D11Texture1D* tex = nullptr;
hr = d3dDevice->CreateTexture1D( &desc,
initData,
&tex
);
if (SUCCEEDED( hr ) && tex != 0)
{
if (textureView != 0)
{
D3D11_SHADER_RESOURCE_VIEW_DESC SRVDesc;
memset( &SRVDesc, 0, sizeof( SRVDesc ) );
SRVDesc.Format = format;
if (arraySize > 1)
{
SRVDesc.ViewDimension = D3D11_SRV_DIMENSION_TEXTURE1DARRAY;
SRVDesc.Texture1DArray.MipLevels = desc.MipLevels;
SRVDesc.Texture1DArray.ArraySize = static_cast<UINT>( arraySize );
}
else
{
SRVDesc.ViewDimension = D3D11_SRV_DIMENSION_TEXTURE1D;
SRVDesc.Texture1D.MipLevels = desc.MipLevels;
}
hr = d3dDevice->CreateShaderResourceView( tex,
&SRVDesc,
textureView
);
if ( FAILED(hr) )
{
tex->Release();
return hr;
}
}
if (texture != 0)
{
*texture = tex;
}
else
{
#if defined(DEBUG) || defined(PROFILE)
tex->SetPrivateData( WKPDID_D3DDebugObjectName,
sizeof("DDSTextureLoader")-1,
"DDSTextureLoader" );
#endif
tex->Release();
}
}
}
break;
case D3D11_RESOURCE_DIMENSION_TEXTURE2D:
{
D3D11_TEXTURE2D_DESC desc;
desc.Width = static_cast<UINT>( width );
desc.Height = static_cast<UINT>( height );
desc.MipLevels = static_cast<UINT>( mipCount );
desc.ArraySize = static_cast<UINT>( arraySize );
desc.Format = format;
desc.SampleDesc.Count = 1;
desc.SampleDesc.Quality = 0;
desc.Usage = D3D11_USAGE_DEFAULT;
desc.BindFlags = D3D11_BIND_SHADER_RESOURCE;
desc.CPUAccessFlags = 0;
desc.MiscFlags = (isCubeMap) ? D3D11_RESOURCE_MISC_TEXTURECUBE : 0;
ID3D11Texture2D* tex = nullptr;
hr = d3dDevice->CreateTexture2D( &desc,
initData,
&tex
);
if (SUCCEEDED( hr ) && tex != 0)
{
if (textureView != 0)
{
D3D11_SHADER_RESOURCE_VIEW_DESC SRVDesc;
memset( &SRVDesc, 0, sizeof( SRVDesc ) );
SRVDesc.Format = format;
if (isCubeMap)
{
if (arraySize > 6)
{
SRVDesc.ViewDimension = D3D11_SRV_DIMENSION_TEXTURECUBEARRAY;
SRVDesc.TextureCubeArray.MipLevels = desc.MipLevels;
// Earlier we set arraySize to (NumCubes * 6)
SRVDesc.TextureCubeArray.NumCubes = static_cast<UINT>( arraySize / 6 );
}
else
{
SRVDesc.ViewDimension = D3D11_SRV_DIMENSION_TEXTURECUBE;
SRVDesc.TextureCube.MipLevels = desc.MipLevels;
}
}
else if (arraySize > 1)
{
SRVDesc.ViewDimension = D3D11_SRV_DIMENSION_TEXTURE2DARRAY;
SRVDesc.Texture2DArray.MipLevels = desc.MipLevels;
SRVDesc.Texture2DArray.ArraySize = static_cast<UINT>( arraySize );
}
else
{
SRVDesc.ViewDimension = D3D11_SRV_DIMENSION_TEXTURE2D;
SRVDesc.Texture2D.MipLevels = desc.MipLevels;
}
hr = d3dDevice->CreateShaderResourceView( tex,
&SRVDesc,
textureView
);
if ( FAILED(hr) )
{
tex->Release();
return hr;
}
}
if (texture != 0)
{
*texture = tex;
}
else
{
#if defined(DEBUG) || defined(PROFILE)
tex->SetPrivateData( WKPDID_D3DDebugObjectName,
sizeof("DDSTextureLoader")-1,
"DDSTextureLoader"
);
#endif
tex->Release();
}
}
}
break;
case D3D11_RESOURCE_DIMENSION_TEXTURE3D:
{
D3D11_TEXTURE3D_DESC desc;
desc.Width = static_cast<UINT>( width );
desc.Height = static_cast<UINT>( height );
desc.Depth = static_cast<UINT>( depth );
desc.MipLevels = static_cast<UINT>( mipCount );
desc.Format = format;
desc.Usage = D3D11_USAGE_DEFAULT;
desc.BindFlags = D3D11_BIND_SHADER_RESOURCE;
desc.CPUAccessFlags = 0;
desc.MiscFlags = 0;
ID3D11Texture3D* tex = nullptr;
hr = d3dDevice->CreateTexture3D( &desc,
initData,
&tex
);
if (SUCCEEDED( hr ) && tex != 0)
{
if (textureView != 0)
{
D3D11_SHADER_RESOURCE_VIEW_DESC SRVDesc;
memset( &SRVDesc, 0, sizeof( SRVDesc ) );
SRVDesc.Format = format;
SRVDesc.ViewDimension = D3D11_SRV_DIMENSION_TEXTURE3D;
SRVDesc.Texture3D.MipLevels = desc.MipLevels;
hr = d3dDevice->CreateShaderResourceView( tex,
&SRVDesc,
textureView
);
if ( FAILED(hr) )