src/mesa/x86/3dnow.h

   1 /* $Id: 3dnow.h,v 1.1 1999/08/19 00:55:42 jtg Exp $ */
   2
   3 /*
   4  * Mesa 3-D graphics library
   5  * Version:  3.1
   6  *
   7  * Copyright (C) 1999  Brian Paul   All Rights Reserved.
   8  *
   9  * Permission is hereby granted, free of charge, to any person obtaining a
  10  * copy of this software and associated documentation files (the "Software"),
  11  * to deal in the Software without restriction, including without limitation
  12  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  13  * and/or sell copies of the Software, and to permit persons to whom the
  14  * Software is furnished to do so, subject to the following conditions:
  15  *
  16  * The above copyright notice and this permission notice shall be included
  17  * in all copies or substantial portions of the Software.
  18  *
  19  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  20  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  21  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  22  * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
  23  * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  24  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  */
  26
  27
  28 /*
  29  * 3DNow! optimizations contributed by
  30  * Holger Waechtler <holger@akaflieg.extern.tu-berlin.de>
  31  */
  32
  33
  34 #ifndef _3dnow_h
  35 #define _3dnow_h
  36
  37
  38
  39 #include "xform.h"
  40
  41
  42 void gl_init_3dnow_asm_transforms (void);
  43
  44
  45
  46
  47 #if 0
  48 GLvector4f *gl_project_points( GLvector4f *proj_vec,
  49                                const GLvector4f *clip_vec )
  50 {
  51    __asm__ (
  52    "   femms                                                              \n"
  53    "                                                                      \n"
  54    "   movq       (%0),     %%mm0      # x1             | x0              \n"
  55    "   movq       8(%0),    %%mm1      # oow            | x2              \n"
  56    "                                                                      \n"
  57    "1: movq       %%mm1,    %%mm2      # oow            | x2              \n"
  58    "   addl       %2,       %0         # next point                       \n"
  59    "                                                                      \n"
  60    "   punpckhdq  %%mm2,    %%mm2      # oow            | oow             \n"
  61    "   addl       $16,      %1         # next point                       \n"
  62    "                                                                      \n"
  63    "   pfrcp      %%mm2,    %%mm3      # 1/oow          | 1/oow           \n"
  64    "   decl       %3                                                      \n"
  65    "                                                                      \n"
  66    "   pfmul      %%mm3,    %%mm0      # x1/oow         | x0/oow          \n"
  67    "   movq       %%mm0,    -16(%1)    # write r0, r1                     \n"
  68    "                                                                      \n"
  69    "   pfmul      %%mm3,    %%mm1      # 1              | x2/oow          \n"
  70    "   movq       (%0),     %%mm0      # x1             | x0              \n"
  71    "                                                                      \n"
  72    "   movd       %%mm1,    8(%1)      # write r2                         \n"
  73    "   movd       %%mm3,    12(%1)     # write r3                         \n"
  74    "                                                                      \n"
  75    "   movq       8(%0),    %%mm1      # oow            | x2              \n"
  76    "   ja         1b                                                      \n"
  77    "                                                                      \n"
  78    "   femms                                                              \n"
  79    "                                                                        "
  80    ::"a" (clip_vec->start),
  81    "c" (proj_vec->start),
  82    "g" (clip_vec->stride),
  83    "d" (clip_vec->count)
  84    );
  85
  86    proj_vec->flags |= VEC_SIZE_4;
  87    proj_vec->size = 3;
  88    proj_vec->count = clip_vec->count;
  89    return proj_vec;
  90 }
  91 #endif
  92
  93
  94
  95 #endif