world: create material if it doesn't exist
world: create material if it doesn't exist

dbartolini/crown,mikymod/crown,taylor001/crown,mikymod/crown,mikymod/crown,dbartolini/crown,dbartolini/crown,dbartolini/crown,taylor001/crown,galek/crown,taylor001/crown,taylor001/crown,galek/crown,galek/crown,galek/crown,mikymod/crown