I've received some test polygons from the ECMWF and have been working with them for a week or so. I've added GLU_TESS_TOLERANCE handling and initial contour-within-contour handling. I'm currently getting a segfault in a glVertex2dv call, but it's getting through a whole lot more than it used to. Things are progressing well. -- Gareth ============================================== Gareth Hughes mailto:[EMAIL PROTECTED] DEFINITYŽ Site Administration Project Lucent Technologies, Bell Labs Australia ph: +61 2 9352 8608 _______________________________________________ Mesa-dev maillist - [EMAIL PROTECTED] http://lists.mesa3d.org/mailman/listinfo/mesa-dev