{ let mut app = SStarApp::new("Sample", 640.0, 480.0, 10); let mut pc = PushConstant { scl: [200.0, 200.0, 1.0, 0.0], ..Default::default() }; while app.update() { pc.rot[0] += 0.01; app.draw(pc.clone(), Position::Center); app.flush(); } app.terminate(); } 5