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 } 103
