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author | Fernando S <fsahmkow27@gmail.com> | 2023-05-24 03:55:45 +0200 |
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committer | GitHub <noreply@github.com> | 2023-05-24 03:55:45 +0200 |
commit | 76f63889692a0836dafd626841aa050ef26b407b (patch) | |
tree | 442b586dc2ead257e4411101b05a06298c97e423 /externals/stb/stb_dxt.h | |
parent | Merge pull request #10388 from GPUCode/fence-wait (diff) | |
parent | textures: add BC1 and BC3 compressors and recompression setting (diff) | |
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Diffstat (limited to 'externals/stb/stb_dxt.h')
-rw-r--r-- | externals/stb/stb_dxt.h | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/externals/stb/stb_dxt.h b/externals/stb/stb_dxt.h new file mode 100644 index 000000000..07d1d1de4 --- /dev/null +++ b/externals/stb/stb_dxt.h @@ -0,0 +1,36 @@ +// SPDX-FileCopyrightText: fabian "ryg" giesen +// SPDX-License-Identifier: MIT + +// stb_dxt.h - v1.12 - DXT1/DXT5 compressor + +#ifndef STB_INCLUDE_STB_DXT_H +#define STB_INCLUDE_STB_DXT_H + +#ifdef __cplusplus +extern "C" { +#endif + +#ifdef STB_DXT_STATIC +#define STBDDEF static +#else +#define STBDDEF extern +#endif + +// compression mode (bitflags) +#define STB_DXT_NORMAL 0 +#define STB_DXT_DITHER 1 // use dithering. was always dubious, now deprecated. does nothing! +#define STB_DXT_HIGHQUAL \ + 2 // high quality mode, does two refinement steps instead of 1. ~30-40% slower. + +STBDDEF void stb_compress_bc1_block(unsigned char* dest, + const unsigned char* src_rgba_four_bytes_per_pixel, int alpha, + int mode); + +STBDDEF void stb_compress_bc3_block(unsigned char* dest, const unsigned char* src, int mode); + +#define STB_COMPRESS_DXT_BLOCK + +#ifdef __cplusplus +} +#endif +#endif // STB_INCLUDE_STB_DXT_H |