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- explicitly check for sse cpu support at runtime (in windows) 

- can disable this check using: --disable-streflop-checks
This commit is contained in:
Mark Vejvoda 2012-10-29 07:28:55 +00:00
parent 5da574a35c
commit 51be122b0c
1 changed files with 68 additions and 0 deletions
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68
source/shared_lib/include/platform/sdl/platform_main.h
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@ -86,6 +86,7 @@ const char *GAME_ARGS[] = {
"--disable-videos",
"--disable-opengl-checks",
"--disable-streflop-checks",
"--verbose"
@ -157,6 +158,7 @@ enum GAME_ARG_TYPE {
GAME_ARG_DISABLE_VIDEOS,
GAME_ARG_DISABLE_OPENGL_CAPS_CHECK,
GAME_ARG_DISABLE_STREFLOP_CAPS_CHECK,
GAME_ARG_VERBOSE_MODE,
@ -499,6 +501,72 @@ int mainSetup(int argc, char **argv) {
if(SystemFlags::VERBOSE_MODE_ENABLED) printf("In [%s::%s Line: %d]\n",__FILE__,__FUNCTION__,__LINE__);
if(hasCommandArgument(argc, argv,string(GAME_ARGS[GAME_ARG_DISABLE_STREFLOP_CAPS_CHECK])) == false) {
// Ensure at runtime that the client has SSE
#if defined(STREFLOP_SSE)
#if defined(WIN32)
if(SystemFlags::VERBOSE_MODE_ENABLED) printf("In [%s::%s Line: %d] About to validate SSE support\n",__FILE__,__FUNCTION__,__LINE__);
int has_x64 = false;
int has_MMX = false;
int has_SSE = false;
int has_SSE2 = false;
int has_SSE3 = false;
int has_SSSE3 = false;
int has_SSE41 = false;
int has_SSE42 = false;
int has_SSE4a = false;
int has_AVX = false;
int has_XOP = false;
int has_FMA3 = false;
int has_FMA4 = false;
int info[4];
__cpuid(info, 0);
int nIds = info[0];
__cpuid(info, 0x80000000);
int nExIds = info[0];
// Detect Instruction Set
if (nIds >= 1){
__cpuid(info,0x00000001);
has_MMX = (info[3] & ((int)1 << 23)) != 0;
has_SSE = (info[3] & ((int)1 << 25)) != 0;
has_SSE2 = (info[3] & ((int)1 << 26)) != 0;
has_SSE3 = (info[2] & ((int)1 << 0)) != 0;
has_SSSE3 = (info[2] & ((int)1 << 9)) != 0;
has_SSE41 = (info[2] & ((int)1 << 19)) != 0;
has_SSE42 = (info[2] & ((int)1 << 20)) != 0;
has_AVX = (info[2] & ((int)1 << 28)) != 0;
has_FMA3 = (info[2] & ((int)1 << 12)) != 0;
}
if (nExIds >= 0x80000001){
__cpuid(info,0x80000001);
has_x64 = (info[3] & ((int)1 << 29)) != 0;
has_SSE4a = (info[2] & ((int)1 << 6)) != 0;
has_FMA4 = (info[2] & ((int)1 << 16)) != 0;
has_XOP = (info[2] & ((int)1 << 11)) != 0;
}
if(SystemFlags::VERBOSE_MODE_ENABLED) printf("In [%s::%s Line: %d] sse check got [%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d]\n",__FILE__,__FUNCTION__,__LINE__,has_x64,has_MMX,has_SSE,has_SSE2,has_SSE3,has_SSSE3,has_SSE41,has_SSE42,has_SSE4a,has_AVX,has_XOP,has_FMA3,has_FMA4);
if( has_SSE == false && has_SSE2 == false && has_SSE3 == false &&
has_SSSE3 == false && has_SSE41 == false && has_SSE42 == false &&
has_SSE4a == false) {
char szBuf[8096]="";
snprintf(szBuf,8096,"Error detected, your CPU does not seem to support SSE: [%d]\n",has_SSE);
throw megaglest_runtime_error(szBuf);
}
#endif
#endif
}
if( hasCommandArgument(argc, argv,GAME_ARGS[GAME_ARG_OPENGL_INFO]) == true ||
hasCommandArgument(argc, argv,GAME_ARGS[GAME_ARG_SDL_INFO]) == true ||
hasCommandArgument(argc, argv,GAME_ARGS[GAME_ARG_LUA_INFO]) == true ||