Fixes obj import so that it only accept tris and quads
Fixes obj import so that it only accept tris and quads

beni55/sculptgl,grimor/sculptgl,stephomi/sculptgl,nonconforme/sculptgl,anteaterho/sculptgl,stephomi/sculptgl,nonconforme/sculptgl,ytiurin/sculptgl,anteaterho/sculptgl,ytiurin/sculptgl,grimor/sculptgl,beni55/sculptgl