("help,h", "produce help message")
("swap-interval,i", po::value<int>(), "set swap interval")
("overdraw,o", "overdraw previous image (instead of calling glClear)")
("help,h", "produce help message")
("swap-interval,i", po::value<int>(), "set swap interval")
("overdraw,o", "overdraw previous image (instead of calling glClear)")