c - How to calculate FPS in OpenGL? -

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void calculateframerate() {         static float framespersecond    = 0.0f;       // store our fps     static float lasttime   = 0.0f;       // hold time last frame     float currenttime = gettickcount() * 0.001f;         ++framespersecond;     if( currenttime - lasttime > 1.0f )     {         lasttime = currenttime;         if(show_fps == 1) fprintf(stderr, "\ncurrent frames per second: %d\n\n", (int)framespersecond);         framespersecond = 0;     } }

should call function in void play(void) or void display(void)?

or not make difference?

you should put in display loop. here's article explains intricacies of game loops should read.


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