Only do vertex distortion if we're in polyfill mode.
Only do vertex distortion if we're in polyfill mode.

VRTicket/vrview,tommytee/vrview_io,aksp/vrview,jbresner/vrview,aksp/vrview,austinrut/vrview,wuyingfengsui/vrview,tommytee/vrview_io,wuyingfengsui/vrview,yupbae/vrview,yupbae/vrview,austinrut/vrview,VRTicket/vrview,aksp/vrview,jbresner/vrview,aksp/vrview,googlearchive/vrview,jbresner/vrview,wuyingfengsui/vrview,googlearchive/vrview,austinrut/vrview,VRTicket/vrview,yupbae/vrview,googlearchive/vrview