[Bug 30385] New: [r300g] textures flashing (disappearing) with GLSL

[Bug 30385] New: [r300g] textures flashing (disappearing) with GLSL

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=30385

           Summary: [r300g] textures flashing (disappearing) with GLSL
           Product: Mesa
           Version: git
          Platform: x86 (IA32)
        OS/Version: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/Gallium/r300
        AssignedTo: dri-devel@lists.freedesktop.org
        ReportedBy: xeros@irc.pl


I'm having some textures flashing (very quick showing and disappearing) in when
I enable GLSL shading. The problem I see when I enable blur effect in KDE 4.5.1
(some windows and panels are showing and disappearing) and in Nexuiz when I
enable to use GLSL option in game settings menu. When textures are disappearing
I can see through walls in Nexuiz or see my desktop wallpaper when I should see
application window. It can be seen in game menu, too where
'Settings', 'About' and 'Quit' menus are flashing. It's flashing very quickly
and cannot be seen on Nexuiz screenshots (I've done almost 100 of them to
check).

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]

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[Bug 30385] [r300g] textures flashing (disappearing) with GLSL

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=30385

--- Comment #1 from Tomasz Czapiewski <xeros@irc.pl> 2010-09-26 12:35:58 PDT ---
Created an attachment (id=38971)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=38971)
Photo of problem with blur in KDE 4.5.1

Here the bottom panel does not show anything but the active window and time
(everything else is invisible there) and window decoration is invisible, too.

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[Bug 30385] [r300g] textures flashing (disappearing) with GLSL

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=30385

--- Comment #2 from Tomasz Czapiewski <xeros@irc.pl> 2010-09-26 12:42:19 PDT ---
Created an attachment (id=38972)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=38972)
Photo of invisible textures in Nexuiz #1

Some textures look here like semi-transparent but they aren't, they change from
visible to invisible... so quickly.

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[Bug 30385] [r300g] textures flashing (disappearing) with GLSL

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=30385

--- Comment #3 from Tomasz Czapiewski <xeros@irc.pl> 2010-09-26 12:45:07 PDT ---
Created an attachment (id=38973)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=38973)
Problem with invisible textures in Nexuiz #2

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[Bug 30385] [r300g] textures flashing (disappearing) with GLSL

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=30385

--- Comment #4 from Tomasz Czapiewski <xeros@irc.pl> 2010-09-26 14:05:09 PDT ---
Maybe this will be usefull - After some searching for a way to improve FPS (by
disabling vblank(?)), I've found that setting "vblank_mode=0" environment
variable solved this issue (textures are not invisible anymore) in Nexuiz
instead of disabling the limit of FPS to 30 or 60 FPS in game.

Sorry for off-topic but is there a way to disable this FPS limit by vsync in
games? I'd rather want to have 40-50 FPS rather than 30 if the game on my PC
could not get full 60 FPS. "vblank_mode=0" works for disabling this limit in
glxgears but not in Nexuiz (I've tried to force disable it by driconf and in
game, too).

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[Bug 30385] [r300g] textures flashing (disappearing) with GLSL

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=30385

--- Comment #5 from Michel Dänzer <michel@daenzer.net> 2010-09-27 04:19:46 PDT ---
The Nexuiz issue looks like bug 28341, but that was in r300c and fixed a while
ago... I wonder if somehow you might be using libGL.so.1 / r300_dri.so binaries
different from the ones you think, or if they might be built incorrectly.

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[Bug 30385] [r300g] textures flashing (disappearing) with GLSL

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=30385

--- Comment #6 from Tomasz Czapiewski <xeros@irc.pl> 2010-09-27 05:31:32 PDT ---
(In reply to comment #5)
> The Nexuiz issue looks like bug 28341, but that was in r300c and fixed a while
> ago... I wonder if somehow you might be using libGL.so.1 / r300_dri.so binaries
> different from the ones you think, or if they might be built incorrectly.

I'm not sure how the drivers and mesa were built (it's ppa:xorg-edgers/radeon:
https://edge.launchpad.net/~xorg-edgers/+archive/radeon for Ubuntu 10.04, but I
used it on Kubuntu 10.10 and both mesa and dri have been upgraded) and I'm
almost sure I'm using r300g, not r300c (glxinfo output: "OpenGL renderer
string: Gallium 0.4 on RV350"). I haven't seen the picture of the problem in
bug 28341, but I don't have "*ERROR* Invalid command stream !" error or any
other related errors in dmesg.

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[Bug 30385] [r300g] textures flashing (disappearing) with GLSL

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=30385

--- Comment #7 from Tomasz Czapiewski <xeros@irc.pl> 2010-09-28 12:22:19 PDT ---
I've tried different vblank_mode settings and with set to 0 or 1 the problem is
gone but after setting it to more than 1 or without any vblank_mode setting the
problem is still there on Mesa
7.10.0~git20100927+gallium+r300.029c099b-0ubuntu0tormod.
What can I do more to get more information to help track this bug?
As I've said before, there's no error in dmesg or other logs for this issue.

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[Bug 30385] [r300g] textures flashing (disappearing) with GLSL

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=30385

Tomasz Czapiewski <xeros@irc.pl> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |FIXED

--- Comment #8 from Tomasz Czapiewski <xeros@irc.pl> 2010-10-12 15:52:02 PDT ---
The problem has been fixed by installing yesterday's xorg-edgers/radeon ppa
packages for Ubuntu 10.10 Maverick.

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