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detect if AVX is supported

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FunkyFr3sh 2022-09-19 13:13:34 +02:00
parent 537b8605b0
commit f4ee6128c4
5 changed files with 25 additions and 2 deletions
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2
inc/blt.h
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@ -5,6 +5,8 @@
#include <windows.h> #include <windows.h>
extern BOOL g_blt_use_avx;
void blt_copy( void blt_copy(
unsigned char* dst, unsigned char* dst,
unsigned char* src, unsigned char* src,

1
inc/utils.h
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@ -5,6 +5,7 @@
#include <windows.h> #include <windows.h>
BOOL util_is_avx_supported();
void util_limit_game_ticks(); void util_limit_game_ticks();
void util_update_bnet_pos(int newX, int newY); void util_update_bnet_pos(int newX, int newY);
BOOL util_get_lowest_resolution(float ratio, SIZE* outRes, DWORD minWidth, DWORD minHeight, DWORD maxWidth, DWORD maxHeight); BOOL util_get_lowest_resolution(float ratio, SIZE* outRes, DWORD minWidth, DWORD minHeight, DWORD maxWidth, DWORD maxHeight);

6
src/blt.c
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@ -4,13 +4,15 @@
#include "blt.h" #include "blt.h"
BOOL g_blt_use_avx;
void blt_copy( void blt_copy(
unsigned char* dst, unsigned char* dst,
unsigned char* src, unsigned char* src,
size_t size) size_t size)
{ {
#ifdef __AVX__ #ifdef __AVX__
if (size >= 1024 * 1536 && !((DWORD)dst % 32) && !((DWORD)src % 32)) if (size >= 1024 * 4096 && g_blt_use_avx && !((DWORD)dst % 32) && !((DWORD)src % 32))
{ {
while (size >= 256) while (size >= 256)
{ {
@ -45,7 +47,7 @@ void blt_copy(
} }
return; return;
} }
#endif #endif // __AVX__
if (size >= 1024 * 100) if (size >= 1024 * 100)
{ {

1
src/dd.c
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@ -1096,6 +1096,7 @@ HRESULT dd_CreateEx(GUID* lpGuid, LPVOID* lplpDD, REFIID iid, IUnknown* pUnkOute
g_ddraw->render.sem = CreateSemaphore(NULL, 0, 1, NULL); g_ddraw->render.sem = CreateSemaphore(NULL, 0, 1, NULL);
g_ddraw->wine = GetProcAddress(GetModuleHandleA("ntdll.dll"), "wine_get_version") != 0; g_ddraw->wine = GetProcAddress(GetModuleHandleA("ntdll.dll"), "wine_get_version") != 0;
g_blt_use_avx = util_is_avx_supported();
cfg_load(); cfg_load();
g_ddraw->ref--; g_ddraw->ref--;

17
src/utils.c
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@ -1,4 +1,5 @@
#include <windows.h> #include <windows.h>
#include <intrin.h>
#include "ddraw.h" #include "ddraw.h"
#include "debug.h" #include "debug.h"
#include "dd.h" #include "dd.h"
@ -10,6 +11,22 @@
#include "config.h" #include "config.h"
BOOL util_is_avx_supported()
{
unsigned int xcr0 = 0;
#if defined(_MSC_VER)
xcr0 = (unsigned int)_xgetbv(_XCR_XFEATURE_ENABLED_MASK);
#else
__asm__("xgetbv" : "=a" (xcr0) : "c" (0) : "%edx");
#endif
int info[4] = { 0 };
__cpuid(info, 1);
return (info[2] & (1 << 27)) && (info[2] & (1 << 28)) && (xcr0 & 6);
}
void util_limit_game_ticks() void util_limit_game_ticks()
{ {
if (g_ddraw->ticks_limiter.htimer) if (g_ddraw->ticks_limiter.htimer)