ref: 1e2596cb1497bd8e491a3b9cd05062a98256ab5d dir: /mdl/9fs.obj/
mtllib 9fs.mtl usemtl 9fs v -50 -10 0 v 50 -10 0 v -50 10 0 v 50 10 0 vt 0 0 vt 1 0 vt 0 1 vt 1 1 f 1/1 2/2 3/3 f 4/4 3/3 2/2