This gives a substantial performance boost without any noticeable rendering changes (though, enough to fail test suite). <img width="1032" alt="screen shot 2015-09-29 at 5 44 33 pm" src="https://cloud.githubusercontent.com/assets/281306/10181825/c366f840-66d1-11e5-9db7-9100a5091841.png"> ref https://github.com/mapbox/mapbox-gl-js/pull/1526#discussion_r40742956