src/mesa/math/m_translate.h

   1 /*
   2  * Mesa 3-D graphics library
   3  * Version:  6.5.1
   4  *
   5  * Copyright (C) 1999-2006  Brian Paul   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
  26 #ifndef _M_TRANSLATE_H_
  27 #define _M_TRANSLATE_H_
  28
  29 #include "main/config.h"
  30 #include "main/mtypes.h"                /* hack for GLchan */
  31
  32
  33 /**
  34  * Array translation.
  35  * For example, convert array of GLushort[3] to GLfloat[4].
  36  * The function name specifies the destination format/size.
  37  * \param  to  the destination address
  38  * \param  ptr  the source address
  39  * \param  stride  the source stride (in bytes) between elements
  40  * \param  type  the source datatype (GL_SHORT, GL_UNSIGNED_INT, etc)
  41  * \param  size  number of values per element in source array (1,2,3 or 4)
  42  * \param  start  first element in source array to convert
  43  * \param  n  number of elements to convert
  44  *
  45  * Note: "element" means a tuple like GLfloat[3] or GLubyte[4].
  46  */
  47
  48
  49 extern void _math_trans_1f(GLfloat *to,
  50                            CONST void *ptr,
  51                            GLuint stride,
  52                            GLenum type,
  53                            GLuint start,
  54                            GLuint n );
  55
  56 extern void _math_trans_1ui(GLuint *to,
  57                             CONST void *ptr,
  58                             GLuint stride,
  59                             GLenum type,
  60                             GLuint start,
  61                             GLuint n );
  62
  63 extern void _math_trans_1ub(GLubyte *to,
  64                             CONST void *ptr,
  65                             GLuint stride,
  66                             GLenum type,
  67                             GLuint start,
  68                             GLuint n );
  69
  70 extern void _math_trans_4ub(GLubyte (*to)[4],
  71                             CONST void *ptr,
  72                             GLuint stride,
  73                             GLenum type,
  74                             GLuint size,
  75                             GLuint start,
  76                             GLuint n );
  77
  78 extern void _math_trans_4chan( GLchan (*to)[4],
  79                                CONST void *ptr,
  80                                GLuint stride,
  81                                GLenum type,
  82                                GLuint size,
  83                                GLuint start,
  84                                GLuint n );
  85
  86 extern void _math_trans_4us(GLushort (*to)[4],
  87                             CONST void *ptr,
  88                             GLuint stride,
  89                             GLenum type,
  90                             GLuint size,
  91                             GLuint start,
  92                             GLuint n );
  93
  94 /** Convert to floats w/out normalization (i.e. just cast) */
  95 extern void _math_trans_4f(GLfloat (*to)[4],
  96                            CONST void *ptr,
  97                            GLuint stride,
  98                            GLenum type,
  99                            GLuint size,
 100                            GLuint start,
 101                            GLuint n );
 102
 103 /** Convert to normalized floats in [0,1] or [-1, 1] */
 104 extern void _math_trans_4fn(GLfloat (*to)[4],
 105                             CONST void *ptr,
 106                             GLuint stride,
 107                             GLenum type,
 108                             GLuint size,
 109                             GLuint start,
 110                             GLuint n );
 111
 112 extern void _math_trans_3fn(GLfloat (*to)[3],
 113                            CONST void *ptr,
 114                            GLuint stride,
 115                            GLenum type,
 116                            GLuint start,
 117                            GLuint n );
 118
 119 extern void _math_init_translate( void );
 120
 121
 122 #endif