传统的FPS计算一般用clock() 和CLOCKS_PER_SECOND来计算,但Iphone上面好像clock()不太好用,要么就是CLOCKS_PER_SECOND不准.
需要用到Iphone的SDK来计算了,虽然我很讨厌Iphone自己的东西,但没办法,谁让你在上面开发呢

CODE:

static unsigned int fps_tmp = 0;
static unsigned int fps = 0;
static NSTimeInterval start_time = [NSDate timeIntervalSinceReferenceDate];

if(([NSDate timeIntervalSinceReferenceDate] - start_time) >= 1.0)
{
fps = fps_tmp;
fps_tmp = 1;
start_time ++;
printf("FPS = %d\n",fps);
}
else
{
fps_tmp ++;
}