src/mesa/x86/common_x86.c

   1 /* $Id: common_x86.c,v 1.7 2000/10/23 00:16:28 gareth Exp $ */
   2
   3 /*
   4  * Mesa 3-D graphics library
   5  * Version:  3.5
   6  *
   7  * Copyright (C) 1999-2000  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  * Check CPU capabilities & initialize optimized funtions for this particular
  30  * processor.
  31  *
  32  * Written by Holger Waechtler <holger@akaflieg.extern.tu-berlin.de>
  33  * Changed by Andre Werthmann <wertmann@cs.uni-potsdam.de> for using the
  34  * new Katmai functions.
  35  */
  36
  37 #include <stdlib.h>
  38 #include <stdio.h>
  39
  40 #include "common_x86_asm.h"
  41
  42
  43 int gl_x86_cpu_features = 0;
  44
  45 /* No reason for this to be public.
  46  */
  47 extern int gl_identify_x86_cpu_features( void );
  48
  49
  50 static void message( const char *msg )
  51 {
  52    if ( getenv( "MESA_DEBUG" ) ) {
  53       fprintf( stderr, "%s\n", msg );
  54    }
  55 }
  56
  57
  58 void gl_init_all_x86_transform_asm( void )
  59 {
  60 #ifdef USE_X86_ASM
  61    gl_x86_cpu_features = gl_identify_x86_cpu_features();
  62
  63    if ( getenv( "MESA_NO_ASM" ) ) {
  64       gl_x86_cpu_features = 0;
  65    }
  66
  67    if ( gl_x86_cpu_features ) {
  68       gl_init_x86_transform_asm();
  69    }
  70
  71 #ifdef USE_MMX_ASM
  72    if ( cpu_has_mmx ) {
  73       if ( getenv( "MESA_NO_MMX" ) == 0 ) {
  74          message( "MMX cpu detected." );
  75       } else {
  76          gl_x86_cpu_features &= ~(X86_FEATURE_MMX);
  77       }
  78    }
  79 #endif
  80
  81 #ifdef USE_3DNOW_ASM
  82    if ( cpu_has_3dnow ) {
  83       if ( getenv( "MESA_NO_3DNOW" ) == 0 ) {
  84          message( "3Dnow cpu detected." );
  85          gl_init_3dnow_transform_asm();
  86       } else {
  87          gl_x86_cpu_features &= ~(X86_FEATURE_3DNOW);
  88       }
  89    }
  90 #endif
  91
  92 #ifdef USE_KATMAI_ASM
  93    if ( cpu_has_xmm ) {
  94       if ( getenv( "MESA_NO_KATMAI" ) == 0 ) {
  95          message( "Katmai cpu detected." );
  96          gl_init_katmai_transform_asm();
  97       } else {
  98          gl_x86_cpu_features &= ~(X86_FEATURE_XMM);
  99       }
 100    }
 101 #endif
 102 #endif
 103 }
 104
 105 /* Note: the above function must be called before this one, so that
 106  * gl_x86_cpu_features gets correctly initialized.
 107  */
 108 void gl_init_all_x86_vertex_asm( void )
 109 {
 110 #ifdef USE_X86_ASM
 111    if ( gl_x86_cpu_features ) {
 112       gl_init_x86_vertex_asm();
 113    }
 114
 115 #ifdef USE_3DNOW_ASM
 116    if ( cpu_has_3dnow && getenv( "MESA_NO_3DNOW" ) == 0 ) {
 117       gl_init_3dnow_vertex_asm();
 118    }
 119 #endif
 120
 121 #ifdef USE_KATMAI_ASM
 122    if ( cpu_has_xmm && getenv( "MESA_NO_KATMAI" ) == 0 ) {
 123       gl_init_katmai_vertex_asm();
 124    }
 125 #endif
 126 #endif
 127 }