| |
| /* |
| * Mesa 3-D graphics library |
| * Version: 3.5 |
| * |
| * Copyright (C) 1999-2001 Brian Paul All Rights Reserved. |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a |
| * copy of this software and associated documentation files (the "Software"), |
| * to deal in the Software without restriction, including without limitation |
| * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| * and/or sell copies of the Software, and to permit persons to whom the |
| * Software is furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included |
| * in all copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
| * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN |
| * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
| * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
| */ |
| |
| /* |
| * New (3.1) transformation code written by Keith Whitwell. |
| */ |
| |
| |
| /* Note - respects the stride of the output vector. |
| */ |
| static void TAG(dotprod_vec2)( GLfloat *out, |
| GLuint outstride, |
| const GLvector4f *coord_vec, |
| const GLfloat plane[4] ) |
| { |
| GLuint stride = coord_vec->stride; |
| GLfloat *coord = coord_vec->start; |
| GLuint count = coord_vec->count; |
| |
| GLuint i; |
| |
| const GLfloat plane0 = plane[0], plane1 = plane[1], plane3 = plane[3]; |
| |
| for (i=0;i<count;i++,STRIDE_F(coord,stride),STRIDE_F(out,outstride)) { |
| *out = (coord[0] * plane0 + |
| coord[1] * plane1 + |
| plane3); |
| } |
| } |
| |
| static void TAG(dotprod_vec3)( GLfloat *out, |
| GLuint outstride, |
| const GLvector4f *coord_vec, |
| const GLfloat plane[4] ) |
| { |
| GLuint stride = coord_vec->stride; |
| GLfloat *coord = coord_vec->start; |
| GLuint count = coord_vec->count; |
| |
| GLuint i; |
| |
| const GLfloat plane0 = plane[0], plane1 = plane[1], plane2 = plane[2]; |
| const GLfloat plane3 = plane[3]; |
| |
| for (i=0;i<count;i++,STRIDE_F(coord,stride),STRIDE_F(out,outstride)) { |
| *out = (coord[0] * plane0 + |
| coord[1] * plane1 + |
| coord[2] * plane2 + |
| plane3); |
| } |
| } |
| |
| static void TAG(dotprod_vec4)( GLfloat *out, |
| GLuint outstride, |
| const GLvector4f *coord_vec, |
| const GLfloat plane[4] ) |
| { |
| GLuint stride = coord_vec->stride; |
| GLfloat *coord = coord_vec->start; |
| GLuint count = coord_vec->count; |
| GLuint i; |
| |
| const GLfloat plane0 = plane[0], plane1 = plane[1], plane2 = plane[2]; |
| const GLfloat plane3 = plane[3]; |
| |
| for (i=0;i<count;i++,STRIDE_F(coord,stride),STRIDE_F(out,outstride)) { |
| *out = (coord[0] * plane0 + |
| coord[1] * plane1 + |
| coord[2] * plane2 + |
| coord[3] * plane3); |
| } |
| } |
| |
| |
| static void TAG(init_dotprod)( void ) |
| { |
| _mesa_dotprod_tab[2] = TAG(dotprod_vec2); |
| _mesa_dotprod_tab[3] = TAG(dotprod_vec3); |
| _mesa_dotprod_tab[4] = TAG(dotprod_vec4); |
| } |