src/glx/indirect_transpose_matrix.c

   1 /*
   2  * (C) Copyright IBM Corporation 2004
   3  * All Rights Reserved.
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the "Software"),
   7  * to deal in the Software without restriction, including without limitation
   8  * on the rights to use, copy, modify, merge, publish, distribute, sub
   9  * license, and/or sell copies of the Software, and to permit persons to whom
  10  * the Software is furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice (including the next
  13  * paragraph) shall be included in all copies or substantial portions of the
  14  * Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.  IN NO EVENT SHALL
  19  * THE COPYRIGHT HOLDERS AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
  20  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  21  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  22  * USE OR OTHER DEALINGS IN THE SOFTWARE.
  23  */
  24
  25 #include <GL/gl.h>
  26 #include "indirect.h"
  27
  28 static void
  29 TransposeMatrixf(const GLfloat s[16], GLfloat d[16])
  30 {
  31    int i, j;
  32    for (i = 0; i < 4; i++) {
  33       for (j = 0; j < 4; j++) {
  34          d[i * 4 + j] = s[j * 4 + i];
  35       }
  36    }
  37 }
  38
  39 static void
  40 TransposeMatrixd(const GLdouble s[16], GLdouble d[16])
  41 {
  42    int i, j;
  43    for (i = 0; i < 4; i++) {
  44       for (j = 0; j < 4; j++) {
  45          d[i * 4 + j] = s[j * 4 + i];
  46       }
  47    }
  48 }
  49
  50
  51 void
  52 __indirect_glLoadTransposeMatrixd(const GLdouble * m)
  53 {
  54    GLdouble mt[16];
  55
  56    TransposeMatrixd(m, mt);
  57    __indirect_glLoadMatrixd(mt);
  58 }
  59
  60 void
  61 __indirect_glLoadTransposeMatrixf(const GLfloat * m)
  62 {
  63    GLfloat mt[16];
  64
  65    TransposeMatrixf(m, mt);
  66    __indirect_glLoadMatrixf(mt);
  67 }
  68
  69 void
  70 __indirect_glMultTransposeMatrixd(const GLdouble * m)
  71 {
  72    GLdouble mt[16];
  73
  74    TransposeMatrixd(m, mt);
  75    __indirect_glMultMatrixd(mt);
  76 }
  77
  78 void
  79 __indirect_glMultTransposeMatrixf(const GLfloat * m)
  80 {
  81    GLfloat mt[16];
  82
  83    TransposeMatrixf(m, mt);
  84    __indirect_glMultMatrixf(mt);
  85 }