mirror of
https://github.com/bulletphysics/bullet3
synced 2025-01-11 01:40:10 +00:00
80 lines
1.2 KiB
C++
80 lines
1.2 KiB
C++
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include "GPU_physics.h"
|
|
#include "clock.h"
|
|
|
|
#ifdef GPUP_CYGWIN
|
|
typedef long long _int64;
|
|
#define LARGEINTEGER _int64
|
|
#endif
|
|
|
|
#ifndef GPUP_WIN32
|
|
# include <sys/time.h>
|
|
#endif
|
|
|
|
#include <time.h>
|
|
|
|
#ifdef GPUP_WIN32
|
|
|
|
double Clock::res ;
|
|
int Clock::perf_timer = -1;
|
|
|
|
void Clock::initPerformanceTimer ()
|
|
{
|
|
if ( perf_timer == -1 )
|
|
{
|
|
/* Use Performance Timer if it's available, mmtimer if not. */
|
|
|
|
__int64 frequency ;
|
|
|
|
perf_timer = QueryPerformanceFrequency ( (LARGE_INTEGER *) & frequency ) ;
|
|
|
|
if ( perf_timer )
|
|
{
|
|
res = 1.0 / (double) frequency ;
|
|
perf_timer = 1 ;
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
|
|
double Clock::getRawTime () const
|
|
{
|
|
#ifdef GPUP_WIN32
|
|
|
|
/* Use Performance Timer if it's available, mmtimer if not. */
|
|
|
|
if ( perf_timer )
|
|
{
|
|
__int64 t ;
|
|
|
|
QueryPerformanceCounter ( (LARGE_INTEGER *) &t ) ;
|
|
|
|
return res * (double) t ;
|
|
}
|
|
|
|
return (double) timeGetTime() * 0.001 ;
|
|
|
|
#else
|
|
timeval tv ;
|
|
|
|
gettimeofday ( & tv, NULL ) ;
|
|
|
|
return (double) tv.tv_sec + (double) tv.tv_usec / 1000000.0 ;
|
|
#endif
|
|
}
|
|
|
|
|
|
void Clock::update ()
|
|
{
|
|
now = getRawTime() - start ;
|
|
|
|
delta = now - last_time ;
|
|
|
|
last_time = now ;
|
|
}
|
|
|
|
|
|
|