src/mesa/main/txc_dxtn.h

   1 /*
   2  * libtxc_dxtn
   3  * Version:  1.0
   4  *
   5  * Copyright (C) 2004  Roland Scheidegger   All Rights Reserved.
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a
   8  * copy of this software and associated documentation files (the "Software"),
   9  * to deal in the Software without restriction, including without limitation
  10  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  11  * and/or sell copies of the Software, and to permit persons to whom the
  12  * Software is furnished to do so, subject to the following conditions:
  13  *
  14  * The above copyright notice and this permission notice shall be included
  15  * in all copies or substantial portions of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  18  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  20  * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
  21  * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  22  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  23  */
  24
  25 #ifndef _TXC_DXTN_H
  26 #define _TXC_DXTN_H
  27
  28 #ifdef __APPLE__
  29 #include <OpenGL/gl.h>
  30 #else
  31 #include <GL/gl.h>
  32 #endif
  33
  34 typedef GLubyte GLchan;
  35 #define UBYTE_TO_CHAN(b)  (b)
  36 #define CHAN_MAX 255
  37 #define RCOMP 0
  38 #define GCOMP 1
  39 #define BCOMP 2
  40 #define ACOMP 3
  41
  42 void fetch_2d_texel_rgb_dxt1(GLint srcRowStride, const GLubyte *pixdata,
  43                              GLint i, GLint j, GLvoid *texel);
  44 void fetch_2d_texel_rgba_dxt1(GLint srcRowStride, const GLubyte *pixdata,
  45                              GLint i, GLint j, GLvoid *texel);
  46 void fetch_2d_texel_rgba_dxt3(GLint srcRowStride, const GLubyte *pixdata,
  47                              GLint i, GLint j, GLvoid *texel);
  48 void fetch_2d_texel_rgba_dxt5(GLint srcRowStride, const GLubyte *pixdata,
  49                              GLint i, GLint j, GLvoid *texel);
  50
  51 void tx_compress_dxtn(GLint srccomps, GLint width, GLint height,
  52                       const GLubyte *srcPixData, GLenum destformat,
  53                       GLubyte *dest, GLint dstRowStride);
  54
  55 #endif /* _TXC_DXTN_H */