↓ 6 callersFunctiondrawTriangle( v1, v2, v3, uv1, uv2, uv3, shader, face, material )
bower_components/threejs/examples/js/renderers/SoftwareRenderer.js:663
↓ 4 callersFunctionaddFace( a, b, c, d, ua, ub, uc, ud, na, nb, nc, nd )
bower_components/threejs/examples/js/loaders/OBJLoader.js:96