1 /* 2 * Mesa 3-D graphics library 3 * 4 * Copyright (C) 1999-2006 Brian Paul All Rights Reserved. 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a 7 * copy of this software and associated documentation files (the "Software"), 8 * to deal in the Software without restriction, including without limitation 9 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 10 * and/or sell copies of the Software, and to permit persons to whom the 11 * Software is furnished to do so, subject to the following conditions: 12 * 13 * The above copyright notice and this permission notice shall be included 14 * in all copies or substantial portions of the Software. 15 * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 17 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR 20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 22 * OTHER DEALINGS IN THE SOFTWARE. 23 */ 24 25 #ifndef TEXCOMPRESS_H 26 #define TEXCOMPRESS_H 27 28 #include "formats.h" 29 #include "glheader.h" 30 31 struct gl_context; 32 33 extern GLenum 34 _mesa_gl_compressed_format_base_format(GLenum format); 35 36 extern GLuint 37 _mesa_get_compressed_formats(struct gl_context *ctx, GLint *formats); 38 39 extern mesa_format 40 _mesa_glenum_to_compressed_format(GLenum format); 41 42 extern GLenum 43 _mesa_compressed_format_to_glenum(struct gl_context *ctx, mesa_format mesaFormat); 44 45 extern GLubyte * 46 _mesa_compressed_image_address(GLint col, GLint row, GLint img, 47 mesa_format mesaFormat, 48 GLsizei width, const GLubyte *image); 49 50 51 /** A function to fetch one texel from a compressed texture */ 52 typedef void (*compressed_fetch_func)(const GLubyte *map, 53 GLint rowStride, 54 GLint i, GLint j, 55 GLfloat *texel); 56 57 extern compressed_fetch_func 58 _mesa_get_compressed_fetch_func(mesa_format format); 59 60 61 extern void 62 _mesa_decompress_image(mesa_format format, GLuint width, GLuint height, 63 const GLubyte *src, GLint srcRowStride, 64 GLfloat *dest); 65 66 #endif /* TEXCOMPRESS_H */ 67