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* gltc: GL Texture Compression library.
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* Copyright (c) 2007 Nicolas Martyanoff <khaelin@gmail.com>
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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#ifndef __GLTC_GLTC_H__
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#define __GLTC_GLTC_H__
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/* -------------------------------------------------------------------
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* The features supported by this version.
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* ------------------------------------------------------------------- */
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/* Uncompressed formats */
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#define GLTC_HAS_A4_R4_G4_B4 1
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#define GLTC_HAS_A1_R5_G5_B5 1
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#define GLTC_HAS_R5_G6_B5 1
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#define GLTC_HAS_R8_G8_B8 1
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#define GLTC_HAS_A8_R8_G8_B8 1
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#define GLTC_HAS_DXT1C 1
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#define GLTC_HAS_DXT1A 1
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#define GLTC_HAS_DXT3 1
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#define GLTC_HAS_DXT5 1
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/* -------------------------------------------------------------------
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* ------------------------------------------------------------------- */
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typedef unsigned char gltc_byte;
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typedef unsigned short gltc_word;
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typedef unsigned long gltc_dword;
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/* -------------------------------------------------------------------
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* Texture compression formats.
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* ------------------------------------------------------------------- */
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/* Raw uncompressed formats */
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#define GLTC_A4_R4_G4_B4 0 /* 16 bits alpha uncompressed. */
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#define GLTC_A1_R5_G5_B5 1 /* 16 bits alpha uncompressed. */
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#define GLTC_R5_G6_B5 2 /* 16 bits alpha-less uncompressed. */
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#define GLTC_R8_G8_B8 3 /* 24 bits uncompressed. */
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#define GLTC_A8_R8_G8_B8 4 /* 32 bits alpha uncompressed. */
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/* S3TC compressed formats */
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#define GLTC_DXT1C 5 /* Alpha-less. */
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#define GLTC_DXT1A 6 /* 1bit alpha. */
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#define GLTC_DXT3 7 /* Direct alpha encoding. */
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#define GLTC_DXT5 8 /* Interpolated alpha encoding. */
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/* -------------------------------------------------------------------
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* ------------------------------------------------------------------- */
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#define GLTC_DDS 0 /* The DirectDraw Surface format. */
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/* -------------------------------------------------------------------
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* ------------------------------------------------------------------- */
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#define GLTC_BADFILE 5
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const char* gltc_error_string(gltc_dword error);
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void gltc_dlog(const char *filename, ...);
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/* -------------------------------------------------------------------
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* A mipmap level in an image.
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* ------------------------------------------------------------------- */
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/* -------------------------------------------------------------------
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* ------------------------------------------------------------------- */
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struct gltc_level *mipmap;
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gltc_dword num_levels;
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void (*get_texel)(const struct gltc_image*, gltc_dword,
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gltc_dword, gltc_dword, gltc_byte[4]);
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gltc_dword gltc_image_width(const struct gltc_image *img,
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gltc_dword gltc_image_height(const struct gltc_image *img,
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gltc_byte* gltc_image_data(const struct gltc_image *img,
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gltc_dword gltc_image_size(const struct gltc_image *img,
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gltc_dword gltc_image_num_levels(const struct gltc_image *img);
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gltc_dword gltc_image_bpp(const struct gltc_image *img,
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gltc_dword gltc_image_create(struct gltc_image *img, gltc_dword format,
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gltc_dword width, gltc_dword height, gltc_dword num_levels);
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void gltc_image_delete(struct gltc_image *img);
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void gltc_image_get_texel(const struct gltc_image *img,
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gltc_dword level, gltc_dword x, gltc_dword y, gltc_byte col[4]);
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gltc_dword gltc_image_convert(struct gltc_image *src,
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struct gltc_image *dst, gltc_dword format);
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gltc_dword gltc_file_load(const char *filename,
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struct gltc_image *img, gltc_dword format);
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gltc_dword gltc_file_save(const char *filename,
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const struct gltc_image *img, gltc_dword format);
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gltc_dword gltc_has_format(gltc_dword format);
added
removed
progs/demos/gltc.h
