Chibi Robo Mud Zfighting

Description

TODO: Reference rendering here.

Before tev_fixes_new, this mud would suffer from severe zfighting.

Recent results

	5.0-13471	5.0-13426	5.0-13225	5.0-13196	5.0-13180	5.0-13129	5.0-13078	5.0-12891	5.0-12426	5.0-12352	5.0-12228	5.0-11854	5.0-11537	5.0-11396	5.0-11329	5.0-11238	5.0-11231	5.0-10965	5.0-10950	5.0-10665	5.0-10651	5.0-9359	5.0-9357	5.0-9353	5.0-9322	5.0-9320	5.0-8825	5.0-7921	5.0-7706	5.0-7704	5.0-7570	5.0-7151	5.0-6243	5.0-6231	5.0-6226
ogl-lin-mesa
ogl-lin-radeon
sw-lin-mesa