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/*
* Mesa 3-D graphics library
*
* 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
* THE AUTHORS OR COPYRIGHT HOLDERS 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);
}
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