ref: 845764edfe05c69aa2c1adcf6bcf63a72b6d5bf2 dir: /mdl/quad.obj/
v -100 -100 0 v 100 -100 0 v -100 100 0 v 100 100 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