[Bug 30313] [r300g] Several (big) textures are corrupted when you look at them from certain distances

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=30313

--- Comment #11 from Tomasz Czapiewski <xeros at irc.pl> 2010-09-25 16:29:11 PDT ---
(In reply to comment #5)
> This looks like a tiling issue and r300c doesn't implement tiling fully. I
> can't reproduce it on R500. Try to set the environment variable
> RADEON_DEBUG=notiling and please let me know if it fixes the issue.

I have the same issue and RADEON_DEBUG=notiling variable helps here, too.
Tested on Nexuiz.

kernel: linux-image-2.6.35-22-generic (2.6.35-22.33)                            
xorg: 7.5+6ubuntu3                                                              
xserver-xorg-core: 2:1.9.0-0ubuntu7                                             
mesa: 7.10.0~git20100925+gallium+r300.58c24390-0ubuntu0tormod                   
graphic card: Sapphire Radeon 9600 256MB AGP (RV350)

OpenGL vendor string: X.Org R300 Project
OpenGL renderer string: Gallium 0.4 on RV350
OpenGL version string: 2.1 Mesa 7.10-devel
OpenGL shading language version string: 1.20

01:00.0 VGA compatible controller [0300]: ATI Technologies Inc RV350 AP [Radeon
9600] [1002:4150]
01:00.1 Display controller [0380]: ATI Technologies Inc RV350 AP [Radeon 9600]
(Secondary) [1002:4170]

I've got RV370 card, too but now I was not able to test if it's got the same
issue:
02:00.0 VGA compatible controller [0300]: ATI Technologies Inc RV370 5B60
[Radeon X300 (PCIE)] [1002:5b60]
02:00.1 Display controller [0380]: ATI Technologies Inc RV370 [Radeon X300SE]
[1002:5b70]

And I've got one more problem with r300g - at the same (custom low) settings
I've had for about 50% more FPS on r300c than on r300g in most places (for
example 20FPS to 30FPS on many map objects on the screen) but when I enable
GLSL in Nexuiz on r300g I have many more FPS, even than in r300c (40-50FPS in
the same places) but then I have other graphic issue. I thought it is something
connected with this issue but for it RADEON_DEBUG=notiling doesn't help.
The issue with GLSL looks like some textures are flashing (once there are
visible (drawn properly) and once not visible at all (only grey color (maybe
other colors, too) in the place of texture). It's flashing very quickly and
cannot be seen on screenshots (I've done almost 100 of them).
Searching bug reports I've saw only this:
https://bugs.freedesktop.org/show_bug.cgi?id=23545 and
https://bugs.freedesktop.org/show_bug.cgi?id=25027
which reading from the description it looks the same.

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