Bug 28993

Summary: [r300g] lightmap texture corruption in some games
Product: Mesa Reporter: almos <aaalmosss>
Component: Drivers/DRI/r300Assignee: Default DRI bug account <dri-devel>
Severity: normal    
Priority: medium    
Version: git   
Hardware: x86 (IA32)   
OS: All   
i915 platform: i915 features:
Attachments: screenshot showing texture corruption
doom 3
possible workaround

Description almos 2010-07-09 13:00:36 UTC
Certain lightmap textures are corrupted when viewed from certain angles in ut2004. As the attached screenshot shows, only the lightmap gets corrupted.

Bug 28800 may be related.

I have an rv350 and libtxc_dxtn.so is installed.
Comment 1 almos 2010-07-09 13:01:52 UTC
Created attachment 36927 [details]
screenshot showing texture corruption
Comment 2 almos 2010-07-28 12:18:06 UTC
I renamed it, because I found that not just ut2004 shows these symptoms. Other games are: nexuiz (mostly on the weapon and other players), sauerbraten (on the weapon), doom3 (on nearly all surfaces), et:qw (on most surfaces).
Comment 3 almos 2010-07-28 12:19:20 UTC
Created attachment 37426 [details]
doom 3
Comment 4 Marek Olšák 2010-08-02 08:54:15 UTC
Created attachment 37526 [details] [review]
possible workaround

Could you try this patch?
Comment 5 almos 2010-08-02 12:27:12 UTC
Sadly, the patch has no apparent effect.

I tried to change the texture detail and to turn detail textures on and off in ut2004, but the always same surfaces get corrupted. In the menu of doom3 the mars is corrupted only if bump mapping is not enabled (I'm not entirely sure, but it seems to me that only the clouds get corrupted).
Comment 6 Marek Olšák 2010-08-05 16:39:34 UTC

*** This bug has been marked as a duplicate of bug 28800 ***
Comment 7 Marek Olšák 2010-08-05 16:40:45 UTC
Please follow bug 28800 instead of this one.

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