workbench/libs/mesa/src/mesa/math/m_dotprod_tmp.h

   1
   2 /*
   3  * Mesa 3-D graphics library
   4  * Version:  3.5
   5  *
   6  * Copyright (C) 1999-2001  Brian Paul   All Rights Reserved.
   7  *
   8  * Permission is hereby granted, free of charge, to any person obtaining a
   9  * copy of this software and associated documentation files (the "Software"),
  10  * to deal in the Software without restriction, including without limitation
  11  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  12  * and/or sell copies of the Software, and to permit persons to whom the
  13  * Software is furnished to do so, subject to the following conditions:
  14  *
  15  * The above copyright notice and this permission notice shall be included
  16  * in all copies or substantial portions of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  20  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  21  * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
  22  * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  23  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  24  */
  25
  26 /*
  27  * New (3.1) transformation code written by Keith Whitwell.
  28  */
  29
  30
  31 /* Note - respects the stride of the output vector.
  32  */
  33 static void TAG(dotprod_vec2)( GLfloat *out,
  34                                GLuint outstride,
  35                                const GLvector4f *coord_vec,
  36                                const GLfloat plane[4] )
  37 {
  38    GLuint stride = coord_vec->stride;
  39    GLfloat *coord = coord_vec->start;
  40    GLuint count = coord_vec->count;
  41
  42    GLuint i;
  43
  44    const GLfloat plane0 = plane[0], plane1 = plane[1], plane3 = plane[3];
  45
  46    for (i=0;i<count;i++,STRIDE_F(coord,stride),STRIDE_F(out,outstride)) {
  47       *out = (coord[0] * plane0 +
  48               coord[1] * plane1 +
  49               plane3);
  50    }
  51 }
  52
  53 static void TAG(dotprod_vec3)( GLfloat *out,
  54                                GLuint outstride,
  55                                const GLvector4f *coord_vec,
  56                                const GLfloat plane[4] )
  57 {
  58    GLuint stride = coord_vec->stride;
  59    GLfloat *coord = coord_vec->start;
  60    GLuint count = coord_vec->count;
  61
  62    GLuint i;
  63
  64    const GLfloat plane0 = plane[0], plane1 = plane[1], plane2 = plane[2];
  65    const GLfloat plane3 = plane[3];
  66
  67    for (i=0;i<count;i++,STRIDE_F(coord,stride),STRIDE_F(out,outstride)) {
  68       *out = (coord[0] * plane0 +
  69               coord[1] * plane1 +
  70               coord[2] * plane2 +
  71               plane3);
  72    }
  73 }
  74
  75 static void TAG(dotprod_vec4)( GLfloat *out,
  76                                GLuint outstride,
  77                                const GLvector4f *coord_vec,
  78                                const GLfloat plane[4] )
  79 {
  80    GLuint stride = coord_vec->stride;
  81    GLfloat *coord = coord_vec->start;
  82    GLuint count = coord_vec->count;
  83    GLuint i;
  84
  85    const GLfloat plane0 = plane[0], plane1 = plane[1], plane2 = plane[2];
  86    const GLfloat plane3 = plane[3];
  87
  88    for (i=0;i<count;i++,STRIDE_F(coord,stride),STRIDE_F(out,outstride)) {
  89       *out = (coord[0] * plane0 +
  90               coord[1] * plane1 +
  91               coord[2] * plane2 +
  92               coord[3] * plane3);
  93    }
  94 }
  95
  96
  97 static void TAG(init_dotprod)( void )
  98 {
  99    _mesa_dotprod_tab[2] = TAG(dotprod_vec2);
 100    _mesa_dotprod_tab[3] = TAG(dotprod_vec3);
 101    _mesa_dotprod_tab[4] = TAG(dotprod_vec4);
 102 }