diff options
Diffstat (limited to 'src/mesa/x86-64/x86-64.c')
| -rw-r--r-- | src/mesa/x86-64/x86-64.c | 34 |
1 files changed, 23 insertions, 11 deletions
diff --git a/src/mesa/x86-64/x86-64.c b/src/mesa/x86-64/x86-64.c index 9ec43c841d..96f8da87f0 100644 --- a/src/mesa/x86-64/x86-64.c +++ b/src/mesa/x86-64/x86-64.c @@ -41,7 +41,10 @@ #include "math/m_debug.h" #endif +extern void _mesa_x86_64_cpuid(unsigned int *regs); + DECLARE_XFORM_GROUP( x86_64, 4 ) +DECLARE_XFORM_GROUP( 3dnow, 4 ) #else /* just to silence warning below */ @@ -81,6 +84,7 @@ static void message( const char *msg ) void _mesa_init_all_x86_64_transform_asm(void) { #ifdef USE_X86_64_ASM + unsigned int regs[4]; if ( _mesa_getenv( "MESA_NO_ASM" ) ) { return; @@ -88,24 +92,32 @@ void _mesa_init_all_x86_64_transform_asm(void) message("Initializing x86-64 optimizations\n"); - ASSIGN_XFORM_GROUP( x86_64, 4 ); - /* _mesa_transform_tab[4][MATRIX_GENERAL] = _mesa_x86_64_transform_points4_general; _mesa_transform_tab[4][MATRIX_IDENTITY] = _mesa_x86_64_transform_points4_identity; _mesa_transform_tab[4][MATRIX_3D] = _mesa_x86_64_transform_points4_3d; - _mesa_transform_tab[4][MATRIX_3D_NO_ROT] = - _mesa_x86_64_transform_points4_3d_no_rot; - _mesa_transform_tab[4][MATRIX_PERSPECTIVE] = - _mesa_x86_64_transform_points4_perspective; - _mesa_transform_tab[4][MATRIX_2D_NO_ROT] = - _mesa_x86_64_transform_points4_2d_no_rot; - _mesa_transform_tab[4][MATRIX_2D] = - _mesa_x86_64_transform_points4_2d; - */ + + regs[0] = 0x80000001; + regs[1] = 0x00000000; + regs[2] = 0x00000000; + regs[3] = 0x00000000; + _mesa_x86_64_cpuid(regs); + if (regs[3] & (1U << 31)) { + message("3Dnow! detected\n"); + _mesa_transform_tab[4][MATRIX_3D_NO_ROT] = + _mesa_3dnow_transform_points4_3d_no_rot; + _mesa_transform_tab[4][MATRIX_PERSPECTIVE] = + _mesa_3dnow_transform_points4_perspective; + _mesa_transform_tab[4][MATRIX_2D_NO_ROT] = + _mesa_3dnow_transform_points4_2d_no_rot; + _mesa_transform_tab[4][MATRIX_2D] = + _mesa_3dnow_transform_points4_2d; + + } + #ifdef DEBUG_MATH _math_test_all_transform_functions("x86_64"); |