https://bugs.freedesktop.org/show_bug.cgi?id=36236
--- Comment #20 from Sven Arvidsson sa@whiz.se 2011-04-19 06:34:09 PDT --- (In reply to comment #17)
Modified shader, replace data/shader/cg/deferred_light_pixel.cg with this and retest
AFAICT there's no change.