cuda-samples/Samples/5_Domain_Specific/dxtc/dds.h

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#ifndef DDS_H
#define DDS_H

#if !defined(MAKEFOURCC)
#define MAKEFOURCC(ch0, ch1, ch2, ch3)                \
  ((unsigned int)(ch0) | ((unsigned int)(ch1) << 8) | \
   ((unsigned int)(ch2) << 16) | ((unsigned int)(ch3) << 24))
#endif

typedef unsigned int uint;
typedef unsigned short ushort;

struct DDSPixelFormat {
  uint size;
  uint flags;
  uint fourcc;
  uint bitcount;
  uint rmask;
  uint gmask;
  uint bmask;
  uint amask;
};

struct DDSCaps {
  uint caps1;
  uint caps2;
  uint caps3;
  uint caps4;
};

/// DDS file header.
struct DDSHeader {
  uint fourcc;
  uint size;
  uint flags;
  uint height;
  uint width;
  uint pitch;
  uint depth;
  uint mipmapcount;
  uint reserved[11];
  DDSPixelFormat pf;
  DDSCaps caps;
  uint notused;
};

static const uint FOURCC_DDS = MAKEFOURCC('D', 'D', 'S', ' ');
static const uint FOURCC_DXT1 = MAKEFOURCC('D', 'X', 'T', '1');
static const uint DDSD_WIDTH = 0x00000004U;
static const uint DDSD_HEIGHT = 0x00000002U;
static const uint DDSD_CAPS = 0x00000001U;
static const uint DDSD_PIXELFORMAT = 0x00001000U;
static const uint DDSCAPS_TEXTURE = 0x00001000U;
static const uint DDPF_FOURCC = 0x00000004U;
static const uint DDSD_LINEARSIZE = 0x00080000U;

#endif  // DDS_H