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!