Hi! For work on occlusion culling methods I have placed some hooks in depth_test_span_*, they do work as long as I dont use display lists. If I use display lists those functions magically(?) dont get called anymore. Which is the call chain for glCallList for triangle drawing? Where do I have to register the correct depth_test_span_* routines (did find only context.c for this). Target is irix6-n32, so I think no optimized code should get executed. Any help greatly appreciated, Richard. -- Richard Guenther <[EMAIL PROTECTED]> PGP: 2E829319 - 2F 83 FC 93 E9 E4 19 E2 93 7A 32 42 45 37 23 57 WWW: http://www.anatom.uni-tuebingen.de/~richi/ _______________________________________________ Mesa-dev maillist - [EMAIL PROTECTED] http://lists.mesa3d.org/mailman/listinfo/mesa-dev