Reorganiz the draw function to avoid an allocation
Reorganiz the draw function to avoid an allocation

acolley/glium,TyOverby/glium,bvssvni/glium,rozaliev/glium,binsoftware/glium,caldwell/glium,carbidegames/glium,sdotz/glium,glium/glium,cpjreynolds/glium,tomaka/glium,nicokoch/glium,christopheraugustus/glium