Xash3D FWGS engine.
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/*
img_dds.h - dds format reference
Copyright (C) 2015 Uncle Mike
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
*/
#ifndef IMG_DDS_H
#define IMG_DDS_H
/*
========================================================================
.DDS image format
========================================================================
*/
#define DDSHEADER ((' '<<24)+('S'<<16)+('D'<<8)+'D') // little-endian "DDS "
// various four-cc types
#define TYPE_DXT1 (('1'<<24)+('T'<<16)+('X'<<8)+'D') // little-endian "DXT1"
#define TYPE_DXT2 (('2'<<24)+('T'<<16)+('X'<<8)+'D') // little-endian "DXT2"
#define TYPE_DXT3 (('3'<<24)+('T'<<16)+('X'<<8)+'D') // little-endian "DXT3"
#define TYPE_DXT4 (('4'<<24)+('T'<<16)+('X'<<8)+'D') // little-endian "DXT4"
#define TYPE_DXT5 (('5'<<24)+('T'<<16)+('X'<<8)+'D') // little-endian "DXT5"
#define TYPE_ATI1 (('1'<<24)+('I'<<16)+('T'<<8)+'A') // little-endian "ATI1"
#define TYPE_ATI2 (('2'<<24)+('I'<<16)+('T'<<8)+'A') // little-endian "ATI2"
#define TYPE_RXGB (('B'<<24)+('G'<<16)+('X'<<8)+'R') // little-endian "RXGB" doom3 normalmaps
#define TYPE_$ (('\0'<<24)+('\0'<<16)+('\0'<<8)+'$') // little-endian "$"
#define TYPE_o (('\0'<<24)+('\0'<<16)+('\0'<<8)+'o') // little-endian "o"
#define TYPE_p (('\0'<<24)+('\0'<<16)+('\0'<<8)+'p') // little-endian "p"
#define TYPE_q (('\0'<<24)+('\0'<<16)+('\0'<<8)+'q') // little-endian "q"
#define TYPE_r (('\0'<<24)+('\0'<<16)+('\0'<<8)+'r') // little-endian "r"
#define TYPE_s (('\0'<<24)+('\0'<<16)+('\0'<<8)+'s') // little-endian "s"
#define TYPE_t (('\0'<<24)+('\0'<<16)+('\0'<<8)+'t') // little-endian "t"
// dwFlags1
#define DDS_CAPS 0x00000001L
#define DDS_HEIGHT 0x00000002L
#define DDS_WIDTH 0x00000004L
#define DDS_PITCH 0x00000008L
#define DDS_PIXELFORMAT 0x00001000L
#define DDS_MIPMAPCOUNT 0x00020000L
#define DDS_LINEARSIZE 0x00080000L
#define DDS_DEPTH 0x00800000L
// dwFlags2
#define DDS_ALPHAPIXELS 0x00000001L
#define DDS_ALPHA 0x00000002L
#define DDS_FOURCC 0x00000004L
#define DDS_RGB 0x00000040L
#define DDS_RGBA 0x00000041L // (DDS_RGB|DDS_ALPHAPIXELS)
#define DDS_LUMINANCE 0x00020000L
#define DDS_DUDV 0x00080000L
// dwCaps1
#define DDS_COMPLEX 0x00000008L
#define DDS_TEXTURE 0x00001000L
#define DDS_MIPMAP 0x00400000L
// dwCaps2
#define DDS_CUBEMAP 0x00000200L
#define DDS_CUBEMAP_POSITIVEX 0x00000400L
#define DDS_CUBEMAP_NEGATIVEX 0x00000800L
#define DDS_CUBEMAP_POSITIVEY 0x00001000L
#define DDS_CUBEMAP_NEGATIVEY 0x00002000L
#define DDS_CUBEMAP_POSITIVEZ 0x00004000L
#define DDS_CUBEMAP_NEGATIVEZ 0x00008000L
#define DDS_CUBEMAP_ALL_SIDES 0x0000FC00L
#define DDS_VOLUME 0x00200000L
typedef struct dds_pf_s
{
uint32_t dwSize;
uint32_t dwFlags;
uint32_t dwFourCC;
uint32_t dwRGBBitCount;
uint32_t dwRBitMask;
uint32_t dwGBitMask;
uint32_t dwBBitMask;
uint32_t dwABitMask;
} dds_pixf_t;
// DDCAPS2
typedef struct dds_caps_s
{
uint32_t dwCaps1;
uint32_t dwCaps2;
uint32_t dwCaps3; // currently unused
uint32_t dwCaps4; // currently unused
} dds_caps_t;
typedef struct dds_s
{
uint32_t dwIdent; // must matched with DDSHEADER
uint32_t dwSize;
uint32_t dwFlags; // determines what fields are valid
uint32_t dwHeight;
uint32_t dwWidth;
uint32_t dwLinearSize; // Formless late-allocated optimized surface size
uint32_t dwDepth; // depth if a volume texture
uint32_t dwMipMapCount; // number of mip-map levels requested
uint32_t dwAlphaBitDepth; // depth of alpha buffer requested
uint32_t dwReserved1[10]; // reserved for future expansions
dds_pixf_t dsPixelFormat;
dds_caps_t dsCaps;
uint32_t dwTextureStage;
} dds_t;
#endif // IMG_DDS_H