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

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2022-01-13 14:05:24 +08:00
/* Copyright (c) 2022, NVIDIA CORPORATION. All rights reserved.
2021-10-21 19:04:49 +08:00
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of NVIDIA CORPORATION nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#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