55 lines
1.2 KiB
C++
55 lines
1.2 KiB
C++
|
#include "blending.h"
|
||
|
|
|
||
|
|
#if !defined(WIN32) && !defined(LINUX)
|
||
|
|
#error port me!
|
||
|
|
#endif
|
||
|
|
|
||
|
|
class BlenderInit
|
||
|
|
{
|
||
|
|
public:
|
||
|
|
BlenderInit() { Blenders::init(); }
|
||
|
|
};
|
||
|
|
static BlenderInit blender_init;
|
||
|
|
|
||
|
|
void Blenders::init()
|
||
|
|
{
|
||
|
|
if (!alphatable[127][127])
|
||
|
|
{
|
||
|
|
int i, j;
|
||
|
|
for (j = 0;j < 256;j++)
|
||
|
|
for (i = 0;i < 256;i++)
|
||
|
|
alphatable[i][j] = (i * (j + 1)) >> 8;
|
||
|
|
#ifndef NO_MMX
|
||
|
|
DWORD retval1, retval2;
|
||
|
|
#ifdef WIN32
|
||
|
|
__try {
|
||
|
|
_asm {
|
||
|
|
mov eax, 1 // set up CPUID to return processor version and features
|
||
|
|
// 0 = vendor string, 1 = version info, 2 = cache info
|
||
|
|
_emit 0x0f // code bytes = 0fh, 0a2h
|
||
|
|
_emit 0xa2
|
||
|
|
mov retval1, eax
|
||
|
|
mov retval2, edx
|
||
|
|
}
|
||
|
|
} __except(EXCEPTION_EXECUTE_HANDLER) { retval1 = retval2 = 0;}
|
||
|
|
#else
|
||
|
|
__asm__ volatile ( "movl $1, %%eax\n"
|
||
|
|
".byte 15, 162\n"
|
||
|
|
"movl %%eax, %0\n"
|
||
|
|
"movl %%edx, %1\n"
|
||
|
|
: "=m" (retval1), "=m" (retval2)
|
||
|
|
: // No inputs...
|
||
|
|
: "%eax", "%edx" );
|
||
|
|
#endif
|
||
|
|
mmx_available = retval1 && (retval2 & 0x800000);
|
||
|
|
#endif //ndef NO_MMX
|
||
|
|
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
#ifndef NO_MMX
|
||
|
|
int Blenders::mmx_available = 0;
|
||
|
|
#endif
|
||
|
|
|
||
|
|
unsigned char Blenders::alphatable[256][256] = {0};
|