https://bugs.freedesktop.org/show_bug.cgi?id=31013
Tomasz Czapiewski xeros@irc.pl changed:
What |Removed |Added ---------------------------------------------------------------------------- Status|REOPENED |RESOLVED Resolution| |INVALID
--- Comment #17 from Tomasz Czapiewski xeros@irc.pl 2010-10-30 12:51:32 PDT --- You were right, it was really too many indirections (game engine GLSL code has changed but comment not) and current testing of last working fglrx for r300 cards on old Ubuntu 8.10 prove it - simmilar behaviour on fglrx and r300g. Some time ago OffsetMapping could work on fglrx as it was using -1 indirections compared to now. The simplified GLSL OffsetMapping code in game has been now pushed to Xonotic git master and works again.
Sorry for mislead and yours occupied time trying to resolve a problem in bug report which could not be fixed in driver.