[Bug 30960] [r300g][glsl] Texture corruption in Xonotic with lightmaps

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=30960

--- Comment #3 from Tomasz Czapiewski <xeros at irc.pl> 2010-10-18 14:26:06 PDT ---
The problem has been discussed with Xonotic developers and does look like
driver bug.

The problem is not on every map but on most of them and not on every texture.
Example map red_V2: 
http://picpaste.com/xonotic000025-izMRie6h.jpg
The same at a bit closer distance:
http://picpaste.com/xonotic000026-JgQAIEys.jpg
More closer (on the left textures ok, doors and right textures broken):
http://picpaste.com/xonotic000027-j4riFPmN.jpg
Almost ok (this texture corruption gets random whenever I move the mouse):
http://picpaste.com/xonotic000028-ZEkd1DoG.jpg
Another map - evilspace2
(http://beta.xonotic.org/autobuild-bsp/evilspace-full-cb6860159bdfb02f5bd5d76ad78db7fdbeb2f1c3-310d495e18dccf5de69f7319f57176178d4d72ce.pk3):
http://picpaste.com/xonotic000033-QRBL0lWT.jpg - textures on the lower floor
are OK always.
The same map - showing one texture ok (it's always OK) and others broken: 
http://picpaste.com/xonotic000037-h1vhAD9q.jpg
Tried with suggested game option "r_shadow_deferred 1":
http://picpaste.com/xonotic000023-rNkR29Tq.jpg
Default map (glowplant) with lightmaps on glsl:
http://picpaste.com/xonotic000062-nOfZlVRw.jpg
The same place with lightmaps+deluxemapping:
http://picpaste.com/xonotic000063-WqFIFjDk.jpg
Once more red_V2 with lightmaps: 
http://picpaste.com/xonotic000066-ilX94A1H.jpg
The same place with lightmaps and "r_glsl_deluxemapping 1", too:
http://picpaste.com/xonotic000065-19VIO1a7.jpg
The same place with lightmaps, "r_glsl_deluxemapping 1" and "r_fakelight 2":
http://picpaste.com/xonotic000067-4VM3tJn9.jpg
Map that is working ok (evilspace remix) with both lightmaps and deluxemapping: 
http://picpaste.com/xonotic000060-gfu8U61e.jpg
Default map (glowplant) with "gl_picmip 1000":
http://picpaste.com/xonotic000071-eg1KFicn.jpg
The same after moving mouse a bit:
http://picpaste.com/xonotic000072-pIgPU6Sd.jpg
Like previous:
http://picpaste.com/xonotic000073-6NFQ7D9B.jpg
And one more:
http://picpaste.com/xonotic000074-5qEkk2A7.jpg
Glowplant map with default "mod_q3bsp_lightmapmergepower 4" option:
http://picpaste.com/xonotic000079-p7ku82CV.jpg
The same (not moved) with "mod_q3bsp_lightmapmergepower 3":
http://picpaste.com/xonotic000080-7p7PgQ2U.jpg
The same (not moved) with "mod_q3bsp_lightmapmergepower 2":
http://picpaste.com/xonotic000081-1mYDfeKo.jpg
The same (not moved) with "mod_q3bsp_lightmapmergepower 1":
http://picpaste.com/xonotic000084-xQuzetgC.jpg
The same (not moved) with "mod_q3bsp_lightmapmergepower 0":
http://picpaste.com/xonotic000082-AwGA2wtr.jpg - almost OK but with a big cost
of FPS drop and here a floor is still a problem but it's just like before -
random, not only the floor.

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