src/mesa/x86-64/x86-64.c

   1
   2 /*
   3  * Mesa 3-D graphics library
   4  * Version:  6.3
   5  *
   6  * Copyright (C) 1999-2003  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  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  22  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  23  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  24  * OTHER DEALINGS IN THE SOFTWARE.
  25  */
  26
  27 /*
  28  * x86-64 optimizations shamelessy converted from x86/sse/3dnow assembly by
  29  * Mikko Tiihonen
  30  */
  31
  32 #ifdef USE_X86_64_ASM
  33
  34 #include "main/glheader.h"
  35 #include "main/context.h"
  36 #include "math/m_xform.h"
  37 #include "tnl/t_context.h"
  38 #include "x86-64.h"
  39 #include "../x86/x86_xform.h"
  40
  41 #ifdef DEBUG
  42 #include "math/m_debug.h"
  43 #endif
  44
  45 extern void _mesa_x86_64_cpuid(unsigned int *regs);
  46
  47 DECLARE_XFORM_GROUP( x86_64, 4 )
  48 DECLARE_XFORM_GROUP( 3dnow, 4 )
  49
  50 #else
  51 /* just to silence warning below */
  52 #include "x86-64.h"
  53 #endif
  54
  55 /*
  56 extern void _mesa_x86_64_transform_points4_general( XFORM_ARGS );
  57 extern void _mesa_x86_64_transform_points4_identity( XFORM_ARGS );
  58 extern void _mesa_x86_64_transform_points4_perspective( XFORM_ARGS );
  59 extern void _mesa_x86_64_transform_points4_3d( XFORM_ARGS );
  60 extern void _mesa_x86_64_transform_points4_3d_no_rot( XFORM_ARGS );
  61 extern void _mesa_x86_64_transform_points4_2d_no_rot( XFORM_ARGS );
  62 extern void _mesa_x86_64_transform_points4_2d( XFORM_ARGS );
  63 */
  64
  65 #ifdef USE_X86_64_ASM
  66 static void message( const char *msg )
  67 {
  68    if (_mesa_getenv("MESA_DEBUG")) {
  69       _mesa_debug( NULL, "%s", msg );
  70    }
  71 }
  72 #endif
  73
  74
  75 void _mesa_init_all_x86_64_transform_asm(void)
  76 {
  77 #ifdef USE_X86_64_ASM
  78    unsigned int regs[4];
  79
  80    if ( _mesa_getenv( "MESA_NO_ASM" ) ) {
  81      return;
  82    }
  83
  84    message("Initializing x86-64 optimizations\n");
  85
  86
  87    _mesa_transform_tab[4][MATRIX_GENERAL] =
  88       _mesa_x86_64_transform_points4_general;
  89    _mesa_transform_tab[4][MATRIX_IDENTITY] =
  90       _mesa_x86_64_transform_points4_identity;
  91    _mesa_transform_tab[4][MATRIX_3D] =
  92       _mesa_x86_64_transform_points4_3d;
  93
  94    regs[0] = 0x80000001;
  95    regs[1] = 0x00000000;
  96    regs[2] = 0x00000000;
  97    regs[3] = 0x00000000;
  98    _mesa_x86_64_cpuid(regs);
  99    if (regs[3] & (1U << 31)) {
 100       message("3Dnow! detected\n");
 101       _mesa_transform_tab[4][MATRIX_3D_NO_ROT] =
 102           _mesa_3dnow_transform_points4_3d_no_rot;
 103       _mesa_transform_tab[4][MATRIX_PERSPECTIVE] =
 104           _mesa_3dnow_transform_points4_perspective;
 105       _mesa_transform_tab[4][MATRIX_2D_NO_ROT] =
 106           _mesa_3dnow_transform_points4_2d_no_rot;
 107       _mesa_transform_tab[4][MATRIX_2D] =
 108           _mesa_3dnow_transform_points4_2d;
 109
 110    }
 111
 112
 113 #ifdef DEBUG_MATH
 114    _math_test_all_transform_functions("x86_64");
 115    _math_test_all_cliptest_functions("x86_64");
 116    _math_test_all_normal_transform_functions("x86_64");
 117 #endif
 118
 119 #endif
 120 }