mirror of
https://github.com/w23/xash3d-fwgs
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117 lines
4.0 KiB
C
117 lines
4.0 KiB
C
/*
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img_dds.h - dds format reference
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Copyright (C) 2015 Uncle Mike
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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*/
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#ifndef IMG_DDS_H
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#define IMG_DDS_H
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/*
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========================================================================
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.DDS image format
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========================================================================
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*/
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#define DDSHEADER ((' '<<24)+('S'<<16)+('D'<<8)+'D') // little-endian "DDS "
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// various four-cc types
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#define TYPE_DXT1 (('1'<<24)+('T'<<16)+('X'<<8)+'D') // little-endian "DXT1"
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#define TYPE_DXT2 (('2'<<24)+('T'<<16)+('X'<<8)+'D') // little-endian "DXT2"
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#define TYPE_DXT3 (('3'<<24)+('T'<<16)+('X'<<8)+'D') // little-endian "DXT3"
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#define TYPE_DXT4 (('4'<<24)+('T'<<16)+('X'<<8)+'D') // little-endian "DXT4"
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#define TYPE_DXT5 (('5'<<24)+('T'<<16)+('X'<<8)+'D') // little-endian "DXT5"
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#define TYPE_ATI1 (('1'<<24)+('I'<<16)+('T'<<8)+'A') // little-endian "ATI1"
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#define TYPE_ATI2 (('2'<<24)+('I'<<16)+('T'<<8)+'A') // little-endian "ATI2"
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#define TYPE_RXGB (('B'<<24)+('G'<<16)+('X'<<8)+'R') // little-endian "RXGB" doom3 normalmaps
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#define TYPE_$ (('\0'<<24)+('\0'<<16)+('\0'<<8)+'$') // little-endian "$"
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#define TYPE_o (('\0'<<24)+('\0'<<16)+('\0'<<8)+'o') // little-endian "o"
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#define TYPE_p (('\0'<<24)+('\0'<<16)+('\0'<<8)+'p') // little-endian "p"
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#define TYPE_q (('\0'<<24)+('\0'<<16)+('\0'<<8)+'q') // little-endian "q"
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#define TYPE_r (('\0'<<24)+('\0'<<16)+('\0'<<8)+'r') // little-endian "r"
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#define TYPE_s (('\0'<<24)+('\0'<<16)+('\0'<<8)+'s') // little-endian "s"
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#define TYPE_t (('\0'<<24)+('\0'<<16)+('\0'<<8)+'t') // little-endian "t"
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// dwFlags1
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#define DDS_CAPS 0x00000001L
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#define DDS_HEIGHT 0x00000002L
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#define DDS_WIDTH 0x00000004L
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#define DDS_PITCH 0x00000008L
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#define DDS_PIXELFORMAT 0x00001000L
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#define DDS_MIPMAPCOUNT 0x00020000L
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#define DDS_LINEARSIZE 0x00080000L
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#define DDS_DEPTH 0x00800000L
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// dwFlags2
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#define DDS_ALPHAPIXELS 0x00000001L
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#define DDS_ALPHA 0x00000002L
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#define DDS_FOURCC 0x00000004L
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#define DDS_RGB 0x00000040L
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#define DDS_RGBA 0x00000041L // (DDS_RGB|DDS_ALPHAPIXELS)
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#define DDS_LUMINANCE 0x00020000L
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#define DDS_DUDV 0x00080000L
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// dwCaps1
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#define DDS_COMPLEX 0x00000008L
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#define DDS_TEXTURE 0x00001000L
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#define DDS_MIPMAP 0x00400000L
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// dwCaps2
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#define DDS_CUBEMAP 0x00000200L
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#define DDS_CUBEMAP_POSITIVEX 0x00000400L
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#define DDS_CUBEMAP_NEGATIVEX 0x00000800L
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#define DDS_CUBEMAP_POSITIVEY 0x00001000L
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#define DDS_CUBEMAP_NEGATIVEY 0x00002000L
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#define DDS_CUBEMAP_POSITIVEZ 0x00004000L
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#define DDS_CUBEMAP_NEGATIVEZ 0x00008000L
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#define DDS_CUBEMAP_ALL_SIDES 0x0000FC00L
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#define DDS_VOLUME 0x00200000L
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typedef struct dds_pf_s
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{
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uint32_t dwSize;
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uint32_t dwFlags;
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uint32_t dwFourCC;
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uint32_t dwRGBBitCount;
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uint32_t dwRBitMask;
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uint32_t dwGBitMask;
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uint32_t dwBBitMask;
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uint32_t dwABitMask;
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} dds_pixf_t;
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// DDCAPS2
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typedef struct dds_caps_s
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{
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uint32_t dwCaps1;
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uint32_t dwCaps2;
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uint32_t dwCaps3; // currently unused
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uint32_t dwCaps4; // currently unused
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} dds_caps_t;
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typedef struct dds_s
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{
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uint32_t dwIdent; // must matched with DDSHEADER
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uint32_t dwSize;
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uint32_t dwFlags; // determines what fields are valid
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uint32_t dwHeight;
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uint32_t dwWidth;
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uint32_t dwLinearSize; // Formless late-allocated optimized surface size
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uint32_t dwDepth; // depth if a volume texture
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uint32_t dwMipMapCount; // number of mip-map levels requested
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uint32_t dwAlphaBitDepth; // depth of alpha buffer requested
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uint32_t dwReserved1[10]; // reserved for future expansions
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dds_pixf_t dsPixelFormat;
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dds_caps_t dsCaps;
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uint32_t dwTextureStage;
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} dds_t;
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#endif // IMG_DDS_H
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