slouken@739
|
1 |
/*
|
slouken@739
|
2 |
SDL - Simple DirectMedia Layer
|
slouken@739
|
3 |
Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002 Sam Lantinga
|
slouken@739
|
4 |
|
slouken@739
|
5 |
This library is free software; you can redistribute it and/or
|
slouken@739
|
6 |
modify it under the terms of the GNU Library General Public
|
slouken@739
|
7 |
License as published by the Free Software Foundation; either
|
slouken@739
|
8 |
version 2 of the License, or (at your option) any later version.
|
slouken@739
|
9 |
|
slouken@739
|
10 |
This library is distributed in the hope that it will be useful,
|
slouken@739
|
11 |
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
slouken@739
|
12 |
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
slouken@739
|
13 |
Library General Public License for more details.
|
slouken@739
|
14 |
|
slouken@739
|
15 |
You should have received a copy of the GNU Library General Public
|
slouken@739
|
16 |
License along with this library; if not, write to the Free
|
slouken@739
|
17 |
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
slouken@739
|
18 |
|
slouken@739
|
19 |
Sam Lantinga
|
slouken@739
|
20 |
slouken@libsdl.org
|
slouken@739
|
21 |
*/
|
slouken@739
|
22 |
|
slouken@739
|
23 |
#ifdef SAVE_RCSID
|
slouken@739
|
24 |
static char rcsid =
|
slouken@739
|
25 |
"@(#) $Id$";
|
slouken@739
|
26 |
#endif
|
slouken@739
|
27 |
|
slouken@739
|
28 |
/* CPU feature detection for SDL */
|
slouken@739
|
29 |
|
slouken@739
|
30 |
#include "SDL.h"
|
slouken@739
|
31 |
//#include "SDL_cpuinfo.h"
|
slouken@739
|
32 |
|
slouken@739
|
33 |
#define CPU_HAS_MMX 0x00000001
|
slouken@739
|
34 |
#define CPU_HAS_3DNOW 0x00000002
|
slouken@739
|
35 |
#define CPU_HAS_SSE 0x00000004
|
slouken@739
|
36 |
|
slouken@739
|
37 |
/* These functions come from SciTech's PM library */
|
slouken@739
|
38 |
extern int CPU_haveMMX();
|
slouken@739
|
39 |
extern int CPU_have3DNow();
|
slouken@739
|
40 |
extern int CPU_haveSSE();
|
slouken@739
|
41 |
|
slouken@739
|
42 |
static Uint32 SDL_CPUFeatures = 0xFFFFFFFF;
|
slouken@739
|
43 |
|
slouken@739
|
44 |
static Uint32 SDL_GetCPUFeatures()
|
slouken@739
|
45 |
{
|
slouken@739
|
46 |
if ( SDL_CPUFeatures == 0xFFFFFFFF ) {
|
slouken@739
|
47 |
SDL_CPUFeatures = 0;
|
slouken@739
|
48 |
if ( CPU_haveMMX() ) {
|
slouken@739
|
49 |
SDL_CPUFeatures |= CPU_HAS_MMX;
|
slouken@739
|
50 |
}
|
slouken@739
|
51 |
if ( CPU_have3DNow() ) {
|
slouken@739
|
52 |
SDL_CPUFeatures |= CPU_HAS_3DNOW;
|
slouken@739
|
53 |
}
|
slouken@739
|
54 |
if ( CPU_haveSSE() ) {
|
slouken@739
|
55 |
SDL_CPUFeatures |= CPU_HAS_SSE;
|
slouken@739
|
56 |
}
|
slouken@739
|
57 |
}
|
slouken@739
|
58 |
return SDL_CPUFeatures;
|
slouken@739
|
59 |
}
|
slouken@739
|
60 |
|
slouken@739
|
61 |
SDL_bool SDL_HasMMX()
|
slouken@739
|
62 |
{
|
slouken@739
|
63 |
if ( SDL_GetCPUFeatures() & CPU_HAS_MMX ) {
|
slouken@739
|
64 |
return SDL_TRUE;
|
slouken@739
|
65 |
}
|
slouken@739
|
66 |
return SDL_FALSE;
|
slouken@739
|
67 |
}
|
slouken@739
|
68 |
|
slouken@739
|
69 |
SDL_bool SDL_Has3DNow()
|
slouken@739
|
70 |
{
|
slouken@739
|
71 |
if ( SDL_GetCPUFeatures() & CPU_HAS_3DNOW ) {
|
slouken@739
|
72 |
return SDL_TRUE;
|
slouken@739
|
73 |
}
|
slouken@739
|
74 |
return SDL_FALSE;
|
slouken@739
|
75 |
}
|
slouken@739
|
76 |
|
slouken@739
|
77 |
SDL_bool SDL_HasSSE()
|
slouken@739
|
78 |
{
|
slouken@739
|
79 |
if ( SDL_GetCPUFeatures() & CPU_HAS_SSE ) {
|
slouken@739
|
80 |
return SDL_TRUE;
|
slouken@739
|
81 |
}
|
slouken@739
|
82 |
return SDL_FALSE;
|
slouken@739
|
83 |
}
|
slouken@739
|
84 |
|
slouken@739
|
85 |
#ifdef TEST_MAIN
|
slouken@739
|
86 |
|
slouken@739
|
87 |
#include <stdio.h>
|
slouken@739
|
88 |
|
slouken@739
|
89 |
int main()
|
slouken@739
|
90 |
{
|
slouken@739
|
91 |
printf("MMX: %d\n", SDL_HasMMX());
|
slouken@739
|
92 |
printf("3DNow: %d\n", SDL_Has3DNow());
|
slouken@739
|
93 |
printf("SSE: %d\n", SDL_HasSSE());
|
slouken@739
|
94 |
}
|
slouken@739
|
95 |
|
slouken@739
|
96 |
#endif /* TEST_MAIN */
|