mtllib obj_multitexture.mtl
v 0.0 0.0 0.0
v 1.0 0.0 0.0
v 2.0 0.0 0.0
v 2.0 1.0 0.0
v 1.0 1.0 0.0
v 0.0 1.0 0.0
v 3.0 0.0 0.0
v 3.0 1.0 0.0
# first square texture
vt 0.5 0.5
vt 1.0 0.5
vt 1.0 1.0
vt 0.5 1.0
# second square texture
vt 0.0 0.5
vt 0.5 0.5
vt 0.5 1.0
vt 0.0 1.0
#third square texture
vt 0.0 0.0
vt 0.5 0.0
vt 0.5 0.5
vt 0.0 0.5
usemtl texture_0
f 1/1 2/2 5/3 6/4
usemtl texture_1
f 2/5 3/6 4/7 5/8
usemtl texture_0
f 3/9 7/10 8/11 4/12