newmtl rusted_metal
    d 1.0
    map_Ka textures/rusted_metal.tga
    map_Kd textures/rusted_metal.tga
newmtl bw_prisondoor
    d 1.0
    map_Ka textures/bw_prisondoor.tga
    map_Kd textures/bw_prisondoor.tga
newmtl rusted_metal_striped
    d 1.0
    map_Ka textures/rusted_metal_striped.tga
    map_Kd textures/rusted_metal_striped.tga