src/glx/x11/indirect_transpose_matrix.c

   1 /* -*- mode: c; tab-width: 3; indent-tabs-mode: nil; c-basic-offset: 3; coding: utf-8-unix -*- */
   2 /*
   3  * (C) Copyright IBM Corporation 2004
   4  * 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  * on the rights to use, copy, modify, merge, publish, distribute, sub
  10  * license, and/or sell copies of the Software, and to permit persons to whom
  11  * the Software is furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice (including the next
  14  * paragraph) shall be included in all copies or substantial portions of the
  15  * Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  18  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.  IN NO EVENT SHALL
  20  * THE COPYRIGHT HOLDERS AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
  21  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  22  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  23  * USE OR OTHER DEALINGS IN THE SOFTWARE.
  24  */
  25
  26 #include <GL/gl.h>
  27 #include "indirect.h"
  28
  29 static void
  30 TransposeMatrixf(const GLfloat s[16], GLfloat d[16])
  31 {
  32    int i, j;
  33    for (i = 0; i < 4; i++) {
  34       for (j = 0; j < 4; j++) {
  35          d[i * 4 + j] = s[j * 4 + i];
  36       }
  37    }
  38 }
  39
  40 static void
  41 TransposeMatrixd(const GLdouble s[16], GLdouble d[16])
  42 {
  43    int i, j;
  44    for (i = 0; i < 4; i++) {
  45       for (j = 0; j < 4; j++) {
  46          d[i * 4 + j] = s[j * 4 + i];
  47       }
  48    }
  49 }
  50
  51
  52 void
  53 __indirect_glLoadTransposeMatrixdARB(const GLdouble * m)
  54 {
  55    GLdouble mt[16];
  56
  57    TransposeMatrixd(m, mt);
  58    __indirect_glLoadMatrixd(mt);
  59 }
  60
  61 void
  62 __indirect_glLoadTransposeMatrixfARB(const GLfloat * m)
  63 {
  64    GLfloat mt[16];
  65
  66    TransposeMatrixf(m, mt);
  67    __indirect_glLoadMatrixf(mt);
  68 }
  69
  70 void
  71 __indirect_glMultTransposeMatrixdARB(const GLdouble * m)
  72 {
  73    GLdouble mt[16];
  74
  75    TransposeMatrixd(m, mt);
  76    __indirect_glMultMatrixd(mt);
  77 }
  78
  79 void
  80 __indirect_glMultTransposeMatrixfARB(const GLfloat * m)
  81 {
  82    GLfloat mt[16];
  83
  84    TransposeMatrixf(m, mt);
  85    __indirect_glMultMatrixf(mt);
  86 }