[Bug 33648] Black line in Lightsmark with Z compression enabled (RV530)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=33648

--- Comment #6 from Alan Swanson <swanson at 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.

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