/******************************************************************************

* The MIT License (MIT)

*

* Copyright (c) 2014 Baldur Karlsson

*

* Permission is hereby granted, free of charge, to any person obtaining a copy

* of this software and associated documentation files (the "Software"), to deal

* in the Software without restriction, including without limitation the rights

* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell

* copies of the Software, and to permit persons to whom the Software is

* furnished to do so, subject to the following conditions:

*

* The above copyright notice and this permission notice shall be included in

* all copies or substantial portions of the Software.

*

* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE

* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,

* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN

* THE SOFTWARE.

******************************************************************************/

#include "common/common.h"

#include <stdint.h>

#include "dds_readwrite.h"

static const uint32_t dds_fourcc = MAKE_FOURCC('D', 'D', 'S', ' ');

// from MSDN

struct DDS_PIXELFORMAT {

uint32_t dwSize;

uint32_t dwFlags;

uint32_t dwFourCC;

uint32_t dwRGBBitCount;

uint32_t dwRBitMask;

uint32_t dwGBitMask;

uint32_t dwBBitMask;

uint32_t dwABitMask;

};

struct DDS_HEADER {

uint32_t dwSize;

uint32_t dwFlags;

uint32_t dwHeight;

uint32_t dwWidth;

uint32_t dwPitchOrLinearSize;

uint32_t dwDepth;

uint32_t dwMipMapCount;

uint32_t dwReserved1[11];

DDS_PIXELFORMAT ddspf;

uint32_t dwCaps;

uint32_t dwCaps2;

uint32_t dwCaps3;

uint32_t dwCaps4;

uint32_t dwReserved2;

};

// from d3d10.h

enum D3D10_RESOURCE_DIMENSION

{

D3D10_RESOURCE_DIMENSION_UNKNOWN = 0,

D3D10_RESOURCE_DIMENSION_BUFFER = 1,

D3D10_RESOURCE_DIMENSION_TEXTURE1D = 2,

D3D10_RESOURCE_DIMENSION_TEXTURE2D = 3,

D3D10_RESOURCE_DIMENSION_TEXTURE3D = 4

};

// from dxgiformat.h

enum DXGI_FORMAT

{

DXGI_FORMAT_UNKNOWN = 0,

DXGI_FORMAT_R32G32B32A32_TYPELESS = 1,

DXGI_FORMAT_R32G32B32A32_FLOAT = 2,

DXGI_FORMAT_R32G32B32A32_UINT = 3,

DXGI_FORMAT_R32G32B32A32_SINT = 4,

DXGI_FORMAT_R32G32B32_TYPELESS = 5,

DXGI_FORMAT_R32G32B32_FLOAT = 6,

DXGI_FORMAT_R32G32B32_UINT = 7,

DXGI_FORMAT_R32G32B32_SINT = 8,

DXGI_FORMAT_R16G16B16A16_TYPELESS = 9,

DXGI_FORMAT_R16G16B16A16_FLOAT = 10,

DXGI_FORMAT_R16G16B16A16_UNORM = 11,

DXGI_FORMAT_R16G16B16A16_UINT = 12,

DXGI_FORMAT_R16G16B16A16_SNORM = 13,

DXGI_FORMAT_R16G16B16A16_SINT = 14,

DXGI_FORMAT_R32G32_TYPELESS = 15,

DXGI_FORMAT_R32G32_FLOAT = 16,

DXGI_FORMAT_R32G32_UINT = 17,

DXGI_FORMAT_R32G32_SINT = 18,

DXGI_FORMAT_R32G8X24_TYPELESS = 19,

DXGI_FORMAT_D32_FLOAT_S8X24_UINT = 20,

DXGI_FORMAT_R32_FLOAT_X8X24_TYPELESS = 21,

DXGI_FORMAT_X32_TYPELESS_G8X24_UINT = 22,

DXGI_FORMAT_R10G10B10A2_TYPELESS = 23,

DXGI_FORMAT_R10G10B10A2_UNORM = 24,

DXGI_FORMAT_R10G10B10A2_UINT = 25,

DXGI_FORMAT_R11G11B10_FLOAT = 26,

DXGI_FORMAT_R8G8B8A8_TYPELESS = 27,

DXGI_FORMAT_R8G8B8A8_UNORM = 28,

DXGI_FORMAT_R8G8B8A8_UNORM_SRGB = 29,

DXGI_FORMAT_R8G8B8A8_UINT = 30,

DXGI_FORMAT_R8G8B8A8_SNORM = 31,

DXGI_FORMAT_R8G8B8A8_SINT = 32,

DXGI_FORMAT_R16G16_TYPELESS = 33,

DXGI_FORMAT_R16G16_FLOAT = 34,

DXGI_FORMAT_R16G16_UNORM = 35,

DXGI_FORMAT_R16G16_UINT = 36,

DXGI_FORMAT_R16G16_SNORM = 37,

DXGI_FORMAT_R16G16_SINT = 38,

DXGI_FORMAT_R32_TYPELESS = 39,

DXGI_FORMAT_D32_FLOAT = 40,

DXGI_FORMAT_R32_FLOAT = 41,

DXGI_FORMAT_R32_UINT = 42,

DXGI_FORMAT_R32_SINT = 43,

DXGI_FORMAT_R24G8_TYPELESS = 44,

DXGI_FORMAT_D24_UNORM_S8_UINT = 45,

DXGI_FORMAT_R24_UNORM_X8_TYPELESS = 46,

DXGI_FORMAT_X24_TYPELESS_G8_UINT = 47,

DXGI_FORMAT_R8G8_TYPELESS = 48,

DXGI_FORMAT_R8G8_UNORM = 49,

DXGI_FORMAT_R8G8_UINT = 50,

DXGI_FORMAT_R8G8_SNORM = 51,

DXGI_FORMAT_R8G8_SINT = 52,

DXGI_FORMAT_R16_TYPELESS = 53,

DXGI_FORMAT_R16_FLOAT = 54,

DXGI_FORMAT_D16_UNORM = 55,

DXGI_FORMAT_R16_UNORM = 56,

DXGI_FORMAT_R16_UINT = 57,

DXGI_FORMAT_R16_SNORM = 58,

DXGI_FORMAT_R16_SINT = 59,

DXGI_FORMAT_R8_TYPELESS = 60,

DXGI_FORMAT_R8_UNORM = 61,

DXGI_FORMAT_R8_UINT = 62,

DXGI_FORMAT_R8_SNORM = 63,

DXGI_FORMAT_R8_SINT = 64,

DXGI_FORMAT_A8_UNORM = 65,

DXGI_FORMAT_R1_UNORM = 66,

DXGI_FORMAT_R9G9B9E5_SHAREDEXP = 67,

DXGI_FORMAT_R8G8_B8G8_UNORM = 68,

DXGI_FORMAT_G8R8_G8B8_UNORM = 69,

DXGI_FORMAT_BC1_TYPELESS = 70,

DXGI_FORMAT_BC1_UNORM = 71,

DXGI_FORMAT_BC1_UNORM_SRGB = 72,

DXGI_FORMAT_BC2_TYPELESS = 73,

DXGI_FORMAT_BC2_UNORM = 74,

DXGI_FORMAT_BC2_UNORM_SRGB = 75,

DXGI_FORMAT_BC3_TYPELESS = 76,

DXGI_FORMAT_BC3_UNORM = 77,

DXGI_FORMAT_BC3_UNORM_SRGB = 78,

DXGI_FORMAT_BC4_TYPELESS = 79,

DXGI_FORMAT_BC4_UNORM = 80,

DXGI_FORMAT_BC4_SNORM = 81,

DXGI_FORMAT_BC5_TYPELESS = 82,

DXGI_FORMAT_BC5_UNORM = 83,

DXGI_FORMAT_BC5_SNORM = 84,

DXGI_FORMAT_B5G6R5_UNORM = 85,

DXGI_FORMAT_B5G5R5A1_UNORM = 86,

DXGI_FORMAT_B8G8R8A8_UNORM = 87,

DXGI_FORMAT_B8G8R8X8_UNORM = 88,

DXGI_FORMAT_R10G10B10_XR_BIAS_A2_UNORM = 89,

DXGI_FORMAT_B8G8R8A8_TYPELESS = 90,

DXGI_FORMAT_B8G8R8A8_UNORM_SRGB = 91,

DXGI_FORMAT_B8G8R8X8_TYPELESS = 92,

DXGI_FORMAT_B8G8R8X8_UNORM_SRGB = 93,

DXGI_FORMAT_BC6H_TYPELESS = 94,

DXGI_FORMAT_BC6H_UF16 = 95,

DXGI_FORMAT_BC6H_SF16 = 96,

DXGI_FORMAT_BC7_TYPELESS = 97,

DXGI_FORMAT_BC7_UNORM = 98,

DXGI_FORMAT_BC7_UNORM_SRGB = 99,

DXGI_FORMAT_AYUV = 100,

DXGI_FORMAT_Y410 = 101,

DXGI_FORMAT_Y416 = 102,

DXGI_FORMAT_NV12 = 103,

DXGI_FORMAT_P010 = 104,

DXGI_FORMAT_P016 = 105,

DXGI_FORMAT_420_OPAQUE = 106,

DXGI_FORMAT_YUY2 = 107,

DXGI_FORMAT_Y210 = 108,

DXGI_FORMAT_Y216 = 109,

DXGI_FORMAT_NV11 = 110,

DXGI_FORMAT_AI44 = 111,

DXGI_FORMAT_IA44 = 112,

DXGI_FORMAT_P8 = 113,

DXGI_FORMAT_A8P8 = 114,

DXGI_FORMAT_B4G4R4A4_UNORM = 115,

DXGI_FORMAT_FORCE_UINT = 0xffffffff

};

struct DDS_HEADER_DXT10 {

DXGI_FORMAT dxgiFormat;

D3D10_RESOURCE_DIMENSION resourceDimension;

uint32_t miscFlag;

uint32_t arraySize;

uint32_t reserved;

};

#define DDSD_CAPS 0x1

#define DDSD_HEIGHT 0x2

#define DDSD_WIDTH 0x4

#define DDSD_PITCH 0x8

#define DDSD_PIXELFORMAT 0x1000

#define DDSD_MIPMAPCOUNT 0x20000

#define DDSD_LINEARSIZE 0x80000

#define DDSD_DEPTH 0x800000

#define DDSCAPS_COMPLEX 0x8

#define DDSCAPS_MIPMAP 0x400000

#define DDSCAPS_TEXTURE 0x1000

#define DDSCAPS2_CUBEMAP 0x0200 // d3d10+ requires all cubemap faces

#define DDSCAPS2_CUBEMAP_ALLFACES 0xfc00

#define DDSCAPS2_VOLUME 0x200000

#define DDS_RESOURCE_MISC_TEXTURECUBE 0x4

#define DDPF_ALPHAPIXELS 0x1

#define DDPF_ALPHA 0x2

#define DDPF_FOURCC 0x4

#define DDPF_RGB 0x40

#define DDPF_YUV 0x200

#define DDPF_LUMINANCE 0x20000

#define DDPF_RGBA (DDPF_RGB|DDPF_ALPHAPIXELS)

ResourceFormat DXGIFormat2ResourceFormat(DXGI_FORMAT format)

{

ResourceFormat special;

ResourceFormat fmt32, fmt16, fmt8;

fmt32.compByteWidth = 4;

fmt32.compCount = 1;

fmt32.compType = eCompType_Float;

fmt32.special = false;

fmt16.compByteWidth = 2;

fmt16.compCount = 1;

fmt16.compType = eCompType_Float;

fmt16.special = false;

fmt8.compByteWidth = 1;

fmt8.compCount = 1;

fmt8.compType = eCompType_UNorm;

fmt8.special = false;

switch(format)

{

case DXGI_FORMAT_BC1_UNORM:

case DXGI_FORMAT_BC1_UNORM_SRGB:

special.specialFormat = eSpecial_BC1;

special.srgbCorrected = (format == DXGI_FORMAT_BC1_UNORM_SRGB ? true : false);

return special;

case DXGI_FORMAT_BC2_UNORM:

case DXGI_FORMAT_BC2_UNORM_SRGB:

special.specialFormat = eSpecial_BC2;

special.srgbCorrected = (format == DXGI_FORMAT_BC2_UNORM_SRGB ? true : false);

return special;

case DXGI_FORMAT_BC3_UNORM:

case DXGI_FORMAT_BC3_UNORM_SRGB:

special.specialFormat = eSpecial_BC3;

special.srgbCorrected = (format == DXGI_FORMAT_BC3_UNORM_SRGB ? true : false);

return special;

case DXGI_FORMAT_BC4_UNORM:

case DXGI_FORMAT_BC4_SNORM:

special.specialFormat = eSpecial_BC4;

special.compType = (format == DXGI_FORMAT_BC4_UNORM ? eCompType_UNorm : eCompType_SNorm);

return special;

case DXGI_FORMAT_BC5_UNORM:

case DXGI_FORMAT_BC5_SNORM:

special.specialFormat = eSpecial_BC5;

special.compType = (format == DXGI_FORMAT_BC5_UNORM ? eCompType_UNorm : eCompType_SNorm);

return special;

case DXGI_FORMAT_BC6H_UF16:

case DXGI_FORMAT_BC6H_SF16:

special.specialFormat = eSpecial_BC6;

special.compType = (format == DXGI_FORMAT_BC6H_UF16 ? eCompType_UNorm : eCompType_SNorm);

return special;

case DXGI_FORMAT_BC7_UNORM:

case DXGI_FORMAT_BC7_UNORM_SRGB:

special.specialFormat = eSpecial_BC7;

special.srgbCorrected = (format == DXGI_FORMAT_BC7_UNORM_SRGB ? true : false);

return special;

case DXGI_FORMAT_R10G10B10A2_UNORM:

case DXGI_FORMAT_R10G10B10A2_UINT:

special.specialFormat = eSpecial_R10G10B10A2;

special.compType = (format == DXGI_FORMAT_R10G10B10A2_UNORM ? eCompType_UNorm : eCompType_UInt);

return special;

case DXGI_FORMAT_B8G8R8A8_UNORM:

case DXGI_FORMAT_B8G8R8A8_UNORM_SRGB:

special.specialFormat = eSpecial_B8G8R8A8;

special.srgbCorrected = (format == DXGI_FORMAT_B8G8R8A8_UNORM_SRGB ? true : false);

return special;

case DXGI_FORMAT_R11G11B10_FLOAT:

special.specialFormat = eSpecial_R11G11B10;

return special;

case DXGI_FORMAT_B5G6R5_UNORM:

special.specialFormat = eSpecial_B5G6R5;

return special;

case DXGI_FORMAT_B5G5R5A1_UNORM:

special.specialFormat = eSpecial_B5G5R5A1;

return special;

case DXGI_FORMAT_R9G9B9E5_SHAREDEXP:

special.specialFormat = eSpecial_R9G9B9E5;

return special;

case DXGI_FORMAT_B4G4R4A4_UNORM:

special.specialFormat = eSpecial_B4G4R4A4;

return special;

case DXGI_FORMAT_D24_UNORM_S8_UINT:

special.specialFormat = eSpecial_D24S8;

return special;

case DXGI_FORMAT_D32_FLOAT_S8X24_UINT:

special.specialFormat = eSpecial_D32S8;

return special;

case DXGI_FORMAT_R32G32B32A32_UINT:

fmt32.compType = eCompType_UInt;

fmt32.compCount = 4;

return fmt32;

case DXGI_FORMAT_R32G32B32A32_SINT:

fmt32.compType = eCompType_SInt;

fmt32.compCount = 4;

return fmt32;

case DXGI_FORMAT_R32G32B32A32_FLOAT:

fmt32.compCount = 4;

return fmt32;

case DXGI_FORMAT_R32G32B32_UINT:

fmt32.compType = eCompType_UInt;

fmt32.compCount = 3;

return fmt32;

case DXGI_FORMAT_R32G32B32_SINT:

fmt32.compType = eCompType_SInt;

fmt32.compCount = 3;

return fmt32;

case DXGI_FORMAT_R32G32B32_FLOAT:

fmt32.compCount = 3;

return fmt32;

case DXGI_FORMAT_R32G32_UINT:

fmt32.compType = eCompType_UInt;

fmt32.compCount = 2;

return fmt32;

case DXGI_FORMAT_R32G32_SINT:

fmt32.compType = eCompType_SInt;

fmt32.compCount = 2;

return fmt32;

case DXGI_FORMAT_R32G32_FLOAT:

fmt32.compCount = 2;

return fmt32;

case DXGI_FORMAT_R32_UINT:

fmt32.compType = eCompType_UInt;

return fmt32;

case DXGI_FORMAT_R32_SINT:

fmt32.compType = eCompType_SInt;

return fmt32;

case DXGI_FORMAT_R32_FLOAT:

return fmt32;

case DXGI_FORMAT_R16G16B16A16_UINT:

fmt16.compType = eCompType_UInt;

fmt16.compCount = 4;

return fmt16;

case DXGI_FORMAT_R16G16B16A16_SINT:

fmt16.compType = eCompType_SInt;

fmt16.compCount = 4;

return fmt16;

case DXGI_FORMAT_R16G16B16A16_UNORM:

fmt16.compType = eCompType_UNorm;

fmt16.compCount = 4;

return fmt16;

case DXGI_FORMAT_R16G16B16A16_SNORM:

fmt16.compType = eCompType_SNorm;

fmt16.compCount = 4;

return fmt16;

case DXGI_FORMAT_R16G16B16A16_FLOAT:

fmt16.compCount = 4;

return fmt16;

case DXGI_FORMAT_R16G16_UINT:

fmt16.compType = eCompType_UInt;

fmt16.compCount = 2;

return fmt16;

case DXGI_FORMAT_R16G16_SINT:

fmt16.compType = eCompType_SInt;

fmt16.compCount = 2;

return fmt16;

case DXGI_FORMAT_R16G16_UNORM:

fmt16.compType = eCompType_UNorm;

fmt16.compCount = 2;

return fmt16;

case DXGI_FORMAT_R16G16_SNORM:

fmt16.compType = eCompType_SNorm;

fmt16.compCount = 2;

return fmt16;

case DXGI_FORMAT_R16G16_FLOAT:

fmt16.compCount = 2;

return fmt16;

case DXGI_FORMAT_R16_UINT:

fmt16.compType = eCompType_UInt;

return fmt16;

case DXGI_FORMAT_R16_SINT:

fmt16.compType = eCompType_SInt;

return fmt16;

case DXGI_FORMAT_R16_UNORM:

fmt16.compType = eCompType_UNorm;

return fmt16;

case DXGI_FORMAT_R16_SNORM:

fmt16.compType = eCompType_SNorm;

return fmt16;

case DXGI_FORMAT_R16_FLOAT:

return fmt16;

case DXGI_FORMAT_R8G8B8A8_UINT:

fmt8.compType = eCompType_UInt;

fmt8.compCount = 4;

return fmt8;

case DXGI_FORMAT_R8G8B8A8_SINT:

fmt8.compType = eCompType_SInt;

fmt8.compCount = 4;

return fmt8;

case DXGI_FORMAT_R8G8B8A8_SNORM:

fmt8.compType = eCompType_SNorm;

fmt8.compCount = 4;

return fmt8;

case DXGI_FORMAT_R8G8B8A8_UNORM_SRGB:

fmt8.compType = eCompType_UNorm;

fmt8.srgbCorrected = true;

fmt8.compCount = 4;

return fmt8;

case DXGI_FORMAT_R8G8B8A8_UNORM:

fmt8.compCount = 4;

return fmt8;

case DXGI_FORMAT_R8G8_UINT:

fmt8.compType = eCompType_UInt;

fmt8.compCount = 2;

return fmt8;

case DXGI_FORMAT_R8G8_SINT:

fmt8.compType = eCompType_SInt;

fmt8.compCount = 2;

return fmt8;

case DXGI_FORMAT_R8G8_SNORM:

fmt8.compType = eCompType_SNorm;

fmt8.compCount = 2;

return fmt8;

case DXGI_FORMAT_R8G8_UNORM:

fmt8.compCount = 2;

return fmt8;

case DXGI_FORMAT_R8_UINT:

fmt8.compType = eCompType_UInt;

return fmt8;

case DXGI_FORMAT_R8_SINT:

fmt8.compType = eCompType_SInt;

return fmt8;

case DXGI_FORMAT_R8_SNORM:

fmt8.compType = eCompType_SNorm;

return fmt8;

case DXGI_FORMAT_R8_UNORM:

return fmt8;

default:

RDCWARN("Unsupported DXGI_FORMAT: %u", (uint32_t)format);

}

return ResourceFormat();

}

DXGI_FORMAT ResourceFormat2DXGIFormat(ResourceFormat format)

{

if(format.special)

{

switch(format.specialFormat)

{

case eSpecial_BC1:

return format.srgbCorrected ? DXGI_FORMAT_BC1_UNORM_SRGB : DXGI_FORMAT_BC1_UNORM;

case eSpecial_BC2:

return format.srgbCorrected ? DXGI_FORMAT_BC2_UNORM_SRGB : DXGI_FORMAT_BC2_UNORM;

case eSpecial_BC3:

return format.srgbCorrected ? DXGI_FORMAT_BC3_UNORM_SRGB : DXGI_FORMAT_BC3_UNORM;

case eSpecial_BC4:

return format.compType == eCompType_UNorm ? DXGI_FORMAT_BC4_UNORM : DXGI_FORMAT_BC4_SNORM;

case eSpecial_BC5:

return format.compType == eCompType_UNorm ? DXGI_FORMAT_BC5_UNORM : DXGI_FORMAT_BC5_SNORM;

case eSpecial_BC6:

return format.compType == eCompType_UNorm ? DXGI_FORMAT_BC6H_UF16 : DXGI_FORMAT_BC6H_SF16;

case eSpecial_BC7:

return format.srgbCorrected ? DXGI_FORMAT_BC7_UNORM_SRGB : DXGI_FORMAT_BC7_UNORM;

case eSpecial_R10G10B10A2:

return format.compType == eCompType_UNorm ? DXGI_FORMAT_R10G10B10A2_UNORM : DXGI_FORMAT_R10G10B10A2_UINT;

case eSpecial_R11G11B10:

return DXGI_FORMAT_R11G11B10_FLOAT;

case eSpecial_B5G6R5:

return DXGI_FORMAT_B5G6R5_UNORM;

case eSpecial_B5G5R5A1:

return DXGI_FORMAT_B5G5R5A1_UNORM;

case eSpecial_R9G9B9E5:

return DXGI_FORMAT_R9G9B9E5_SHAREDEXP;

case eSpecial_B8G8R8A8:

return format.srgbCorrected ? DXGI_FORMAT_B8G8R8A8_UNORM_SRGB : DXGI_FORMAT_B8G8R8A8_UNORM;

case eSpecial_B4G4R4A4:

return DXGI_FORMAT_B4G4R4A4_UNORM;

case eSpecial_D24S8:

return DXGI_FORMAT_D24_UNORM_S8_UINT;

case eSpecial_D32S8:

return DXGI_FORMAT_D32_FLOAT_S8X24_UINT;

default:

case eSpecial_ETC2:

case eSpecial_EAC:

case eSpecial_YUV:

RDCERR("Unsupported writing format %u", format.specialFormat);

return DXGI_FORMAT_UNKNOWN;

}

}

if(format.compCount == 4)

{

if(format.compByteWidth == 4)

{

switch(format.compType)

{

case eCompType_UInt: return DXGI_FORMAT_R32G32B32A32_UINT;

case eCompType_SInt: return DXGI_FORMAT_R32G32B32A32_SINT;

default: return DXGI_FORMAT_R32G32B32A32_FLOAT;

}

}

else if(format.compByteWidth == 2)

{

switch(format.compType)

{

case eCompType_UInt: return DXGI_FORMAT_R16G16B16A16_UINT;

case eCompType_SInt: return DXGI_FORMAT_R16G16B16A16_SINT;

case eCompType_UNorm: return DXGI_FORMAT_R16G16B16A16_UNORM;

case eCompType_SNorm: return DXGI_FORMAT_R16G16B16A16_SNORM;

default: return DXGI_FORMAT_R16G16B16A16_FLOAT;

}

}

else if(format.compByteWidth == 1)

{

switch(format.compType)

{

case eCompType_UInt: return DXGI_FORMAT_R8G8B8A8_UINT;

case eCompType_SInt: return DXGI_FORMAT_R8G8B8A8_SINT;

case eCompType_SNorm: return DXGI_FORMAT_R8G8B8A8_SNORM;

default:

case eCompType_UNorm: if(format.srgbCorrected) return DXGI_FORMAT_R8G8B8A8_UNORM_SRGB;

else return DXGI_FORMAT_R8G8B8A8_UNORM;

}

}

RDCERR("Unexpected component byte width %u for 4-component type", format.compByteWidth);

return DXGI_FORMAT_UNKNOWN;

}

else if(format.compCount == 3)

{

if(format.compByteWidth == 4)

{

switch(format.compType)

{

case eCompType_UInt: return DXGI_FORMAT_R32G32B32_UINT;

case eCompType_SInt: return DXGI_FORMAT_R32G32B32_SINT;

default: return DXGI_FORMAT_R32G32B32_FLOAT;

}

}

RDCERR("Unexpected component byte width %u for 3-component type", format.compByteWidth);

return DXGI_FORMAT_UNKNOWN;

}

else if(format.compCount == 2)

{

if(format.compByteWidth == 4)

{

switch(format.compType)

{

case eCompType_UInt: return DXGI_FORMAT_R32G32_UINT;

case eCompType_SInt: return DXGI_FORMAT_R32G32_SINT;

default: return DXGI_FORMAT_R32G32_FLOAT;

}

}

else if(format.compByteWidth == 2)

{

switch(format.compType)

{

case eCompType_UInt: return DXGI_FORMAT_R16G16_UINT;

case eCompType_SInt: return DXGI_FORMAT_R16G16_SINT;

case eCompType_UNorm: return DXGI_FORMAT_R16G16_UNORM;

case eCompType_SNorm: return DXGI_FORMAT_R16G16_SNORM;

default: return DXGI_FORMAT_R16G16_FLOAT;

}

}

else if(format.compByteWidth == 1)

{

switch(format.compType)

{

case eCompType_UInt: return DXGI_FORMAT_R8G8_UINT;

case eCompType_SInt: return DXGI_FORMAT_R8G8_SINT;

case eCompType_SNorm: return DXGI_FORMAT_R8G8_SNORM;

default: return DXGI_FORMAT_R8G8_UNORM;

}

}

RDCERR("Unexpected component byte width %u for 2-component type", format.compByteWidth);

return DXGI_FORMAT_UNKNOWN;

}

else if(format.compCount == 1)

{

if(format.compByteWidth == 4)

{

switch(format.compType)

{

case eCompType_UInt: return DXGI_FORMAT_R32_UINT;

case eCompType_SInt: return DXGI_FORMAT_R32_SINT;

default: return DXGI_FORMAT_R32_FLOAT;

}

}

else if(format.compByteWidth == 2)

{

switch(format.compType)

{

case eCompType_UInt: return DXGI_FORMAT_R16_UINT;

case eCompType_SInt: return DXGI_FORMAT_R16_SINT;

case eCompType_UNorm: return DXGI_FORMAT_R16_UNORM;

case eCompType_SNorm: return DXGI_FORMAT_R16_SNORM;

default: return DXGI_FORMAT_R16_FLOAT;

}

}

else if(format.compByteWidth == 1)

{

switch(format.compType)

{

case eCompType_UInt: return DXGI_FORMAT_R8_UINT;

case eCompType_SInt: return DXGI_FORMAT_R8_SINT;

case eCompType_SNorm: return DXGI_FORMAT_R8_SNORM;

default: return DXGI_FORMAT_R8_UNORM;

}

}

RDCERR("Unexpected component byte width %u for 1-component type", format.compByteWidth);

return DXGI_FORMAT_UNKNOWN;

}

RDCERR("Unexpected component count %u", format.compCount);

return DXGI_FORMAT_UNKNOWN;

}

bool write_dds_to_file(FILE *f, const dds_data &data)

{

if(!f) return false;

uint32_t magic = dds_fourcc;

DDS_HEADER header;

DDS_HEADER_DXT10 headerDXT10;

RDCEraseEl(header);

RDCEraseEl(headerDXT10);

header.dwSize = sizeof(DDS_HEADER);

header.ddspf.dwSize = sizeof(DDS_PIXELFORMAT);

header.dwWidth = data.width;

header.dwHeight = data.height;

header.dwDepth = data.depth;

header.dwMipMapCount = data.mips;

header.dwFlags = DDSD_CAPS | DDSD_WIDTH | DDSD_HEIGHT | DDSD_PIXELFORMAT;

if(data.mips > 1)

header.dwFlags |= DDSD_MIPMAPCOUNT;

if(data.depth > 1)

header.dwFlags |= DDSD_DEPTH;

bool blockFormat = false;

if(data.format.special)

{

switch(data.format.specialFormat)

{

case eSpecial_BC1:

case eSpecial_BC2:

case eSpecial_BC3:

case eSpecial_BC4:

case eSpecial_BC5:

case eSpecial_BC6:

case eSpecial_BC7:

blockFormat = true;

break;

case eSpecial_ETC2:

case eSpecial_EAC:

RDCERR("Unsupported file format, ETC2/EAC");

return false;

default:

break;

}

}

if(blockFormat)

header.dwFlags |= DDSD_LINEARSIZE;

else

header.dwFlags |= DDSD_PITCH;

header.dwCaps = DDSCAPS_TEXTURE;

if(data.mips > 1)

header.dwCaps |= DDSCAPS_MIPMAP;

if(data.mips > 1 || data.slices > 1 || data.depth > 1)

header.dwCaps |= DDSCAPS_COMPLEX;

header.dwCaps2 = data.depth > 1 ? DDSCAPS2_VOLUME : 0;

bool dx10Header = false;

headerDXT10.dxgiFormat = ResourceFormat2DXGIFormat(data.format);

headerDXT10.resourceDimension = data.depth > 1 ? D3D10_RESOURCE_DIMENSION_TEXTURE3D : D3D10_RESOURCE_DIMENSION_TEXTURE2D;

headerDXT10.miscFlag = 0;

headerDXT10.arraySize = data.slices;

if(headerDXT10.dxgiFormat == DXGI_FORMAT_UNKNOWN)

return false;

if(data.cubemap)

{

header.dwCaps2 = DDSCAPS2_CUBEMAP|DDSCAPS2_CUBEMAP_ALLFACES;

headerDXT10.miscFlag |= DDS_RESOURCE_MISC_TEXTURECUBE;

headerDXT10.arraySize /= 6;

}

if(headerDXT10.arraySize > 1)

dx10Header = true; // need to specify dx10 header to give array size

uint32_t bytesPerPixel = 1;

if(blockFormat)

{

int blockSize = (data.format.specialFormat == eSpecial_BC1 || data.format.specialFormat == eSpecial_BC4) ? 8 : 16;

header.dwPitchOrLinearSize = RDCMAX(1U, ((header.dwWidth+3)/4)) * blockSize;

}

else

{

switch(data.format.specialFormat)

{

case eSpecial_R10G10B10A2:

case eSpecial_R9G9B9E5:

case eSpecial_R11G11B10:

case eSpecial_D24S8:

case eSpecial_B8G8R8A8:

bytesPerPixel = 4;

break;

case eSpecial_B5G6R5:

case eSpecial_B5G5R5A1:

case eSpecial_B4G4R4A4:

bytesPerPixel = 2;

break;

case eSpecial_D32S8:

bytesPerPixel = 5;

break;

case eSpecial_YUV:

RDCERR("Unsupported file format");

return false;

default:

bytesPerPixel = data.format.compCount*data.format.compByteWidth;

}

header.dwPitchOrLinearSize = header.dwWidth * bytesPerPixel;

}

// special case a couple of formats to write out non-DX10 style, for

// backwards compatibility

if(data.format.compByteWidth == 1 && data.format.compCount == 4)

{

header.ddspf.dwFlags = DDPF_RGBA;

header.ddspf.dwRGBBitCount = 32;

header.ddspf.dwRBitMask = 0x000000ff;

header.ddspf.dwGBitMask = 0x0000ff00;

header.ddspf.dwBBitMask = 0x00ff0000;

header.ddspf.dwABitMask = 0xff000000;

}

else if(data.format.specialFormat == eSpecial_BC1)

{

header.ddspf.dwFlags = DDPF_FOURCC;

header.ddspf.dwFourCC = MAKE_FOURCC('D', 'X', 'T', '1');

}

else if(data.format.specialFormat == eSpecial_BC2)

{

header.ddspf.dwFlags = DDPF_FOURCC;

header.ddspf.dwFourCC = MAKE_FOURCC('D', 'X', 'T', '3');

}

else if(data.format.specialFormat == eSpecial_BC3)

{

header.ddspf.dwFlags = DDPF_FOURCC;

header.ddspf.dwFourCC = MAKE_FOURCC('D', 'X', 'T', '5');

}

else if(data.format.specialFormat == eSpecial_BC4 && data.format.compType == eCompType_UNorm)

{

header.ddspf.dwFlags = DDPF_FOURCC;

header.ddspf.dwFourCC = MAKE_FOURCC('B', 'C', '4', 'U');

}

else if(data.format.specialFormat == eSpecial_BC4 && data.format.compType == eCompType_SNorm)

{

header.ddspf.dwFlags = DDPF_FOURCC;

header.ddspf.dwFourCC = MAKE_FOURCC('B', 'C', '4', 'S');

}

else if(data.format.specialFormat == eSpecial_BC5 && data.format.compType == eCompType_UNorm)

{

header.ddspf.dwFlags = DDPF_FOURCC;

header.ddspf.dwFourCC = MAKE_FOURCC('A', 'T', 'I', '2');

}

else if(data.format.specialFormat == eSpecial_BC5 && data.format.compType == eCompType_SNorm)

{

header.ddspf.dwFlags = DDPF_FOURCC;

header.ddspf.dwFourCC = MAKE_FOURCC('B', 'C', '5', 'S');

}

else

{

// just write out DX10 header

dx10Header = true;

}

if(dx10Header)

{

header.ddspf.dwFlags = DDPF_FOURCC;

header.ddspf.dwFourCC = MAKE_FOURCC('D', 'X', '1', '0');

}

{

FileIO::fwrite(&magic, sizeof(magic), 1, f);

FileIO::fwrite(&header, sizeof(header), 1, f);

if(dx10Header)

FileIO::fwrite(&headerDXT10, sizeof(headerDXT10), 1, f);

int i=0;

for(int slice=0; slice < RDCMAX(1,data.slices); slice++)

{

for(int mip=0; mip < RDCMAX(1,data.mips); mip++)

{

int numdepths = RDCMAX(1, data.depth>>mip);

for(int d=0; d < numdepths; d++)

{

byte *bytedata = data.subdata[i];

int rowlen = RDCMAX(1, data.width>>mip);

int numRows = RDCMAX(1, data.height>>mip);

int pitch = RDCMAX(1U, rowlen * bytesPerPixel);

// pitch/rows are in blocks, not pixels, for block formats.

if(blockFormat)

{

numRows = RDCMAX(1, numRows/4);

int blockSize = (data.format.specialFormat == eSpecial_BC1 || data.format.specialFormat == eSpecial_BC4) ? 8 : 16;

pitch = RDCMAX(blockSize, (((rowlen+3)/4)) * blockSize);

}

for(int row=0; row < numRows; row++)

{

FileIO::fwrite(bytedata, 1, pitch, f);

bytedata += pitch;

}

i++;

}

}

}

}

return true;

}

bool is_dds_file(FILE *f)

{

FileIO::fseek64(f, 0, SEEK_SET);

uint32_t magic = 0;

FileIO::fread(&magic, sizeof(magic), 1, f);

FileIO::fseek64(f, 0, SEEK_SET);

return magic == dds_fourcc;

}

dds_data load_dds_from_file(FILE *f)

{

dds_data ret = {};

dds_data error = {};

FileIO::fseek64(f, 0, SEEK_SET);

uint32_t magic = 0;

FileIO::fread(&magic, sizeof(magic), 1, f);

DDS_HEADER header = {};

FileIO::fread(&header, sizeof(header), 1, f);

bool dx10Header = false;

DDS_HEADER_DXT10 headerDXT10 = {};

if(header.ddspf.dwFlags == DDPF_FOURCC && header.ddspf.dwFourCC == MAKE_FOURCC('D', 'X', '1', '0'))

{

FileIO::fread(&headerDXT10, sizeof(headerDXT10), 1, f);

dx10Header = true;

}

ret.width = RDCMAX(1U, header.dwWidth);

ret.height = RDCMAX(1U, header.dwHeight);

ret.depth = RDCMAX(1U, header.dwDepth);

ret.slices = dx10Header ? RDCMAX(1U, headerDXT10.arraySize) : 1;

ret.mips = RDCMAX(1U, header.dwMipMapCount);

uint32_t cubeFlags = DDSCAPS2_CUBEMAP|DDSCAPS2_CUBEMAP_ALLFACES;

if((header.dwCaps2 & cubeFlags) == cubeFlags && header.dwCaps & DDSCAPS_COMPLEX)

ret.cubemap = true;

if(dx10Header && headerDXT10.miscFlag & DDS_RESOURCE_MISC_TEXTURECUBE)

ret.cubemap = true;

if(ret.cubemap)

ret.slices *= 6;

if(dx10Header)

{

ret.format = DXGIFormat2ResourceFormat(headerDXT10.dxgiFormat);

if(ret.format.special && ret.format.specialFormat == eSpecial_Unknown)

{

RDCWARN("Unsupported DXGI_FORMAT: %u", (uint32_t)headerDXT10.dxgiFormat);

return error;

}

}

else if(header.ddspf.dwFlags & DDPF_FOURCC)

{

switch(header.ddspf.dwFourCC)

{

case MAKE_FOURCC('D', 'X', 'T', '1'):

ret.format = DXGIFormat2ResourceFormat(DXGI_FORMAT_BC1_UNORM);

break;

case MAKE_FOURCC('D', 'X', 'T', '3'):

ret.format = DXGIFormat2ResourceFormat(DXGI_FORMAT_BC2_UNORM);

break;

case MAKE_FOURCC('D', 'X', 'T', '5'):

ret.format = DXGIFormat2ResourceFormat(DXGI_FORMAT_BC3_UNORM);

break;

case MAKE_FOURCC('B', 'C', '4', 'U'):

ret.format = DXGIFormat2ResourceFormat(DXGI_FORMAT_BC4_UNORM);

break;

case MAKE_FOURCC('B', 'C', '4', 'S'):

ret.format = DXGIFormat2ResourceFormat(DXGI_FORMAT_BC4_SNORM);

break;

case MAKE_FOURCC('A', 'T', 'I', '2'):

ret.format = DXGIFormat2ResourceFormat(DXGI_FORMAT_BC5_UNORM);

break;

case MAKE_FOURCC('B', 'C', '5', 'S'):

ret.format = DXGIFormat2ResourceFormat(DXGI_FORMAT_BC5_SNORM);

break;

case MAKE_FOURCC('R', 'G', 'B', 'G'):

ret.format = DXGIFormat2ResourceFormat(DXGI_FORMAT_R8G8_B8G8_UNORM);

break;

case MAKE_FOURCC('G', 'R', 'G', 'B'):

ret.format = DXGIFormat2ResourceFormat(DXGI_FORMAT_G8R8_G8B8_UNORM);

break;

case 36:

ret.format = DXGIFormat2ResourceFormat(DXGI_FORMAT_R16G16B16A16_UNORM);

break;

case 110:

ret.format = DXGIFormat2ResourceFormat(DXGI_FORMAT_R16G16B16A16_SNORM);

break;

case 111:

ret.format = DXGIFormat2ResourceFormat(DXGI_FORMAT_R16_FLOAT);

break;

case 112:

ret.format = DXGIFormat2ResourceFormat(DXGI_FORMAT_R16G16_FLOAT);

break;

case 113:

ret.format = DXGIFormat2ResourceFormat(DXGI_FORMAT_R16G16B16A16_FLOAT);

break;

case 114:

ret.format = DXGIFormat2ResourceFormat(DXGI_FORMAT_R32_FLOAT);

break;

case 115:

ret.format = DXGIFormat2ResourceFormat(DXGI_FORMAT_R32G32_FLOAT);

break;

case 116:

ret.format = DXGIFormat2ResourceFormat(DXGI_FORMAT_R32G32B32A32_FLOAT);

break;

default:

RDCWARN("Unsupported FourCC: %08x", header.ddspf.dwFourCC);

return error;

}

}

else

{

if(header.ddspf.dwRGBBitCount != 32 &&

header.ddspf.dwRGBBitCount != 24 &&

header.ddspf.dwRGBBitCount != 16 &&

header.ddspf.dwRGBBitCount != 8)

{

RDCWARN("Unsupported RGB bit count: %u", header.ddspf.dwRGBBitCount);

return error;

}

ret.format.compByteWidth = 1;

ret.format.compCount = header.ddspf.dwRGBBitCount/8;