// calculate how many frames need to be dropped every minute.
int toDrop = (int) floor(600.0 * (m_displayedFramesPerSecond - m_realFps) + 0.5);
// calculate how many frames need to be dropped every minute.
int toDrop = (int) floor(600.0 * (m_displayedFramesPerSecond - m_realFps) + 0.5);