https://bugs.freedesktop.org/show_bug.cgi?id=33648
--- Comment #6 from Alan Swanson swanson@ukfsn.org 2011-03-22 06:34:29 PDT --- Created an attachment (id=44712) --> (https://bugs.freedesktop.org/attachment.cgi?id=44712) ut2004-zmask-corruption.jpg
Similarly on RV530 I'm seeing frequent (but relatively minor) corruption in UT2004 with a number of maps which appears to be triangular blocks of old scenes (not textures AFAICT). However these were not from previously rendered frames at same location.
Running "RADEON_DEBUG=nozmask" removes the corruption. Example screenshot has; - Under green DM_Junkyard label is thin line of another texture. - Under green ONS_ArticStronghold labels there is sky textures, which when standing on base platform appear in front or behind of alpha transparent textures.