Posted by Demoscene Passivist on Apr 18, 2011; 10:04pm
URL: https://forum.jogamp.org/Lighting-on-OBJ-Model-after-import-tp2816340p2836508.html

Nope, the loader has no 'build in' limitation. Usually when u got problems with specific models it's an export problem on the 3D modeler side (e.g. with Blender or 3DSMax). Generally u have to "triangulate" the model during/before export to make it a valid wavefront mesh with multiples of 3 (or 4) as vertex count of the polygons, or otherwise u will get these 'strange buffer over-/under-flows'.