I''m new in programming with OpenGL. I learned the basics in OpenGL from the very good tutorials of NeHe. So now i''m writting a small OpenGL engine with this i would load ASE-files (3DMax ASCII-Scene-Exporter) in my scene and i adding a some methods to load a BMP or a TGA textur in it. So now to my problem: The ASE-file have a *MATERIAL_LIST were all materials are defined in the *MATERIAL_LIST there are a few MATERIALS an this MATERIALS have a few SUBMATERIALS. But the SUBMATERIALS can have some SUBMATERIALS too. The faces of the mesh have a MATERIAL_ID and the MESH have a MATERIAL_REF. So i can reference to a MATERIAL by the MATERIAL_REF and get the right SUBMATERIAL by the MATERIAL_ID. But i don''t now how to refer to the SUBMATERIAL of a SUBMATERIAL. I hope that anyone anderstand this problem and can help me please. Thanks homer_simpson P.S. sorry for my bad english