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//header file to load .dds files
//these use dxtc texture compression
#ifndef __DDS_H
#define __DDS_H
#include "globalincs/pstypes.h"
#include "cfile/cfile.h"
#define DDS_ERROR_NONE 0 // everything went fine
#define DDS_ERROR_INVALID_FILENAME 1 // bad or missing file
#define DDS_ERROR_UNSUPPORTED 2 // a known format but one we don't support
#define DDS_ERROR_INVALID_FORMAT 3 // format that's not supported
#define DDS_ERROR_BAD_HEADER 4 // header was not "DDS "
#define DDS_ERROR_NO_COMPRESSION 5 // file is compressed, compression isn't supported
#define DDS_ERROR_NON_POWER_OF_2 6 // file is not a power of 2 in dimensions
#define DDS_ERROR_CUBEMAP_FACES 7 // file is a cubemap, but doesn't have all six faces
#define DDS_DXT_INVALID -1
#define DDS_UNCOMPRESSED 0
#define DDS_DXT1 1
#define DDS_DXT3 3
#define DDS_DXT5 5
#define DDS_CUBEMAP_UNCOMPRESSED 10
#define DDS_CUBEMAP_DXT1 11
#define DDS_CUBEMAP_DXT3 13
#define DDS_CUBEMAP_DXT5 15
#ifndef MAKEFOURCC
#define MAKEFOURCC(ch0, ch1, ch2, ch3) \
((uint)(ubyte)(ch0) | ((uint)(ubyte)(ch1) << 8) | \
((uint)(ubyte)(ch2) << 16) | ((uint)(ubyte)(ch3) << 24 ))
#endif //defined(MAKEFOURCC)
// FOURCC codes for DX compressed-texture pixel formats
#define FOURCC_DXT1 (MAKEFOURCC('D','X','T','1'))
#define FOURCC_DXT2 (MAKEFOURCC('D','X','T','2'))
#define FOURCC_DXT3 (MAKEFOURCC('D','X','T','3'))
#define FOURCC_DXT4 (MAKEFOURCC('D','X','T','4'))
#define FOURCC_DXT5 (MAKEFOURCC('D','X','T','5'))
#define DDS_FILECODE 0x20534444 // "DDS " in file
// DDS format stuff ...
#define DDSD_LINEARSIZE 0x00080000
#define DDSD_PITCH 0x00000008
#define DDPF_ALPHAPIXELS 0x00000001
#define DDPF_FOURCC 0x00000004
#define DDPF_PALETTEINDEXED4 0x00000008
#define DDPF_PALETTEINDEXEDTO8 0x00000010
#define DDPF_PALETTEINDEXED8 0x00000020
#define DDPF_RGB 0x00000040
#define DDSD_PIXELFORMAT 0x00001000
#define DDSD_WIDTH 0x00000004
#define DDSD_HEIGHT 0x00000002
#define DDSD_CAPS 0x00000001
#define DDSD_MIPMAPCOUNT 0x00020000
#define DDSCAPS_COMPLEX 0x00000008
#define DDSCAPS_PRIMARYSURFACE 0x00000200
#define DDSCAPS_MIPMAP 0x00400000
#define DDSCAPS_TEXTURE 0x00001000
#define DDSCAPS2_CUBEMAP 0x00000200
#define DDSCAPS2_VOLUME 0x00200000
#define DDSCAPS2_CUBEMAP_POSITIVEX 0x00000400
#define DDSCAPS2_CUBEMAP_NEGATIVEX 0x00000800
#define DDSCAPS2_CUBEMAP_POSITIVEY 0x00001000
#define DDSCAPS2_CUBEMAP_NEGATIVEY 0x00002000
#define DDSCAPS2_CUBEMAP_POSITIVEZ 0x00004000
#define DDSCAPS2_CUBEMAP_NEGATIVEZ 0x00008000
#define DDSCAPS2_CUBEMAP_ALLFACES ( DDSCAPS2_CUBEMAP_POSITIVEX | \
DDSCAPS2_CUBEMAP_NEGATIVEX | \
DDSCAPS2_CUBEMAP_POSITIVEY | \
DDSCAPS2_CUBEMAP_NEGATIVEY | \
DDSCAPS2_CUBEMAP_POSITIVEZ | \
DDSCAPS2_CUBEMAP_NEGATIVEZ )
#pragma pack(1)
// these structures are the headers for a dds file
/*typedef struct _DDPIXELFORMAT {
uint dwSize;
uint dwFlags;
uint dwFourCC;
uint dwRGBBitCount;
uint dwRBitMask;
uint dwGBitMask;
uint dwBBitMask;
uint dwRGBAlphaBitMask;
} DDPIXELFORMAT;
typedef struct _DDSCAPS2
{
uint dwCaps1;
uint dwCaps2;
uint Reserved[2];
} DDSCAPS2;*/
typedef struct _DDSURFACEDESC2
{
uint dwSize; // size of the DDSURFACEDESC structure
uint dwFlags; // determines what fields are valid
uint dwHeight; // height of surface to be created
uint dwWidth; // width of input surface
uint dwPitchOrLinearSize;
uint dwDepth;
uint dwMipMapCount;
uint dwReserved1[11];
struct {
uint dwSize;
uint dwFlags;
uint dwFourCC;
uint dwRGBBitCount;
uint dwRBitMask;
uint dwGBitMask;
uint dwBBitMask;
uint dwRGBAlphaBitMask;
} ddpfPixelFormat;
struct {
uint dwCaps1;
uint dwCaps2;
uint Reserved[2];
} ddsCaps;
// DDPIXELFORMAT ddpfPixelFormat;
// DDSCAPS2 ddsCaps; // direct draw surface capabilities
uint dwReserved2;
} DDSURFACEDESC2;
#pragma pack()
#define DDS_OFFSET 4+sizeof(DDSURFACEDESC2) //place where the data starts -- should be 128
//reads a dds header
//returns one of the error values
//'compression_type' comes back as one of the DDS_DXTC* defines
int dds_read_header(const char *filename, CFILE *img_cfp = NULL, int *width = 0, int *height = 0, int *bpp = 0, int *compression_type = 0, int *levels = 0, int *size = 0, ubyte *palette = NULL);
//reads bitmap
//size of the data it stored in size
int dds_read_bitmap(const char *filename, ubyte *data, ubyte *bpp = NULL, int cf_type = CF_TYPE_ANY);
// writes a DDS file using given data
void dds_save_image(int width, int height, int bpp, int num_mipmaps, ubyte *data = NULL, int cubemap = 0, const char *filename = NULL);
//returns a string from a DDS error code
const char *dds_error_string(int code);
extern int Texture_compression_available;
extern int Use_compressed_textures;
#endif //__DDS_H
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