pytorch3d/tests/data/missing_files_obj/model2.obj

mtllib model2.mtl

v 0.1 0.2 0.3
v 0.2 0.3 0.4
v 0.3 0.4 0.5
v 0.4 0.5 0.6
usemtl material_1
f 1 2 3
f 1 2 4