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  1.  
  2. /*
  3.  * Mesa 3-D graphics library
  4.  *
  5.  * Copyright (C) 1999-2003  Brian Paul   All Rights Reserved.
  6.  *
  7.  * Permission is hereby granted, free of charge, to any person obtaining a
  8.  * copy of this software and associated documentation files (the "Software"),
  9.  * to deal in the Software without restriction, including without limitation
  10.  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  11.  * and/or sell copies of the Software, and to permit persons to whom the
  12.  * Software is furnished to do so, subject to the following conditions:
  13.  *
  14.  * The above copyright notice and this permission notice shall be included
  15.  * in all copies or substantial portions of the Software.
  16.  *
  17.  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  18.  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19.  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  20.  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  21.  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  22.  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  23.  * OTHER DEALINGS IN THE SOFTWARE.
  24.  */
  25.  
  26. /*
  27.  * x86-64 optimizations shamelessy converted from x86/sse/3dnow assembly by
  28.  * Mikko Tiihonen
  29.  */
  30.  
  31. #ifdef USE_X86_64_ASM
  32.  
  33. #include "main/glheader.h"
  34. #include "main/context.h"
  35. #include "math/m_xform.h"
  36. #include "tnl/t_context.h"
  37. #include "x86-64.h"
  38. #include "../x86/x86_xform.h"
  39.  
  40. #ifdef DEBUG
  41. #include "math/m_debug.h"
  42. #endif
  43.  
  44. extern void _mesa_x86_64_cpuid(unsigned int *regs);
  45.  
  46. DECLARE_XFORM_GROUP( x86_64, 4 )
  47. DECLARE_XFORM_GROUP( 3dnow, 4 )
  48.  
  49. #else
  50. /* just to silence warning below */
  51. #include "x86-64.h"
  52. #endif
  53.  
  54. /*
  55. extern void _mesa_x86_64_transform_points4_general( XFORM_ARGS );
  56. extern void _mesa_x86_64_transform_points4_identity( XFORM_ARGS );
  57. extern void _mesa_x86_64_transform_points4_perspective( XFORM_ARGS );
  58. extern void _mesa_x86_64_transform_points4_3d( XFORM_ARGS );
  59. extern void _mesa_x86_64_transform_points4_3d_no_rot( XFORM_ARGS );
  60. extern void _mesa_x86_64_transform_points4_2d_no_rot( XFORM_ARGS );
  61. extern void _mesa_x86_64_transform_points4_2d( XFORM_ARGS );
  62. */
  63.  
  64. #ifdef USE_X86_64_ASM
  65. static void message( const char *msg )
  66. {
  67.    if (_mesa_getenv("MESA_DEBUG")) {
  68.       _mesa_debug( NULL, "%s", msg );
  69.    }
  70. }
  71. #endif
  72.  
  73.  
  74. void _mesa_init_all_x86_64_transform_asm(void)
  75. {
  76. #ifdef USE_X86_64_ASM
  77.    unsigned int regs[4];
  78.  
  79.    if ( _mesa_getenv( "MESA_NO_ASM" ) ) {
  80.      return;
  81.    }
  82.  
  83.    message("Initializing x86-64 optimizations\n");
  84.  
  85.  
  86.    _mesa_transform_tab[4][MATRIX_GENERAL] =
  87.       _mesa_x86_64_transform_points4_general;
  88.    _mesa_transform_tab[4][MATRIX_IDENTITY] =
  89.       _mesa_x86_64_transform_points4_identity;
  90.    _mesa_transform_tab[4][MATRIX_3D] =
  91.       _mesa_x86_64_transform_points4_3d;
  92.  
  93.    regs[0] = 0x80000001;
  94.    regs[1] = 0x00000000;
  95.    regs[2] = 0x00000000;
  96.    regs[3] = 0x00000000;
  97.    _mesa_x86_64_cpuid(regs);
  98.    if (regs[3] & (1U << 31)) {
  99.       message("3Dnow! detected\n");
  100.       _mesa_transform_tab[4][MATRIX_3D_NO_ROT] =
  101.           _mesa_3dnow_transform_points4_3d_no_rot;
  102.       _mesa_transform_tab[4][MATRIX_PERSPECTIVE] =
  103.           _mesa_3dnow_transform_points4_perspective;
  104.       _mesa_transform_tab[4][MATRIX_2D_NO_ROT] =
  105.           _mesa_3dnow_transform_points4_2d_no_rot;
  106.       _mesa_transform_tab[4][MATRIX_2D] =
  107.           _mesa_3dnow_transform_points4_2d;
  108.  
  109.    }
  110.  
  111.    
  112. #ifdef DEBUG_MATH
  113.    _math_test_all_transform_functions("x86_64");
  114.    _math_test_all_cliptest_functions("x86_64");
  115.    _math_test_all_normal_transform_functions("x86_64");
  116. #endif
  117.  
  118. #endif
  119. }
  120.