it was using some unsupported linewidth trick... I've been trying to get the official glPolygonOffset to working, but my silly Mac doesnt support it, it seems. So! I thought of another trick, and that's just moving the window matrix a little to the front. :) - for those interested; the code for glPolygonOffset is still there, commented out. (drawobject.c) - btw: the drawobject.c routines are a TOTAL mess!