* [Bug 70009] [r300g, bisected] some wine apps renders black
[not found] <bug-70009-502@http.bugs.freedesktop.org/>
@ 2013-10-02 14:33 ` bugzilla-daemon
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To: dri-devel
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https://bugs.freedesktop.org/show_bug.cgi?id=70009
Pavel Ondračka <pavel.ondracka@email.cz> changed:
What |Removed |Added
----------------------------------------------------------------------------
Assignee|mesa-dev@lists.freedesktop. |dri-devel@lists.freedesktop
|org |.org
Summary|[bisected] some wine apps |[r300g, bisected] some wine
|renders black |apps renders black
Component|Mesa core |Drivers/Gallium/r300
--- Comment #2 from Pavel Ondračka <pavel.ondracka@email.cz> ---
So is seems, that when I record a trace using r300g driver (RV530) and replay
it using either llvmpipe or i965, it works fine. Probably this is just some
issue in the r300g driver, uncovered by core mesa changes...
EVE online apitrace uploaded here: http://pavel.ondracka.cz/EVE.trace
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2013-10-02 14:33 ` [Bug 70009] [r300g, bisected] some wine apps renders black bugzilla-daemon
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--- Comment #3 from Alex Deucher <agd5f@yahoo.com> ---
(In reply to comment #2)
> So is seems, that when I record a trace using r300g driver (RV530) and
> replay it using either llvmpipe or i965, it works fine. Probably this is
> just some issue in the r300g driver, uncovered by core mesa changes...
> EVE online apitrace uploaded here: http://pavel.ondracka.cz/EVE.trace
llvmpipe and i965 support more temps than r300 class hw so they don't cross the
limit.
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From: bugzilla-daemon @ 2013-10-02 16:07 UTC (permalink / raw)
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https://bugs.freedesktop.org/show_bug.cgi?id=70009
--- Comment #4 from Pavel Ondračka <pavel.ondracka@email.cz> ---
(In reply to comment #3)
> (In reply to comment #2)
> > So is seems, that when I record a trace using r300g driver (RV530) and
> > replay it using either llvmpipe or i965, it works fine. Probably this is
> > just some issue in the r300g driver, uncovered by core mesa changes...
> > EVE online apitrace uploaded here: http://pavel.ondracka.cz/EVE.trace
>
> llvmpipe and i965 support more temps than r300 class hw so they don't cross
> the limit.
Yeah, thats why they show no errors and promblems when launching EVE directly,
because wine detects this and generate valid shaders...
However the main problem is a little bit different. Citing one sample shader
from bug 42514:
The shader declares the array VC to have 245 elements:
uniform vec4 VC[245];
then it tries to access the 246th element of the array:
R0.xyz = (VC[245].xyz);
Also citing from wine bug 29146:
Yeah, we should be better about this. The reason we don't already do this is
that a shader like this may still work if it doesn't actually use the constants
near the end that we remove. We should probably print a message mentioning
something along those lines when such a shader fails to compile or link.
So when i generate the apitrace with r300g in already contains the invalid
shaders, however llvmpipe and softpipe still handle things correctly (e.g.
display majority of stuff) and also r300g did so before the mentioned bad
commit.
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--- Comment #5 from Marek Olšák <maraeo@gmail.com> ---
Do particular shaders fail to compile or is there just incorrect rendering?
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--- Comment #6 from Pavel Ondračka <pavel.ondracka@email.cz> ---
Created attachment 87014
--> https://bugs.freedesktop.org/attachment.cgi?id=87014&action=edit
EVE online Wine terminal output
(In reply to comment #5)
> Do particular shaders fail to compile or is there just incorrect rendering?
Yeah, there is a particular failing shader, however it fails to compile and
link even before the patch, its just that the patch introduced also a bad
rendering (but only for r300g).
I've attached the wine log, which shows the failing shader, however I'm
starting to believe, that it may not be the root cause here.
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--- Comment #7 from Marek Olšák <maraeo@gmail.com> ---
Created attachment 87143
--> https://bugs.freedesktop.org/attachment.cgi?id=87143&action=edit
possible fix
Could you please try the attached patch?
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--- Comment #8 from Pavel Ondračka <pavel.ondracka@email.cz> ---
(In reply to comment #7)
> Created attachment 87143 [details] [review]
> possible fix
>
> Could you please try the attached patch?
The attached patch doesn't help.
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--- Comment #9 from Marek Olšák <maraeo@gmail.com> ---
Sorry I'm out of ideas. Can the regression be reproduced by some existing
piglit test maybe?
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--- Comment #10 from Pavel Ondračka <pavel.ondracka@email.cz> ---
(In reply to comment #9)
> Sorry I'm out of ideas. Can the regression be reproduced by some existing
> piglit test maybe?
I'll run a piglit before and after the change... BTW you can't reproduce this
with the http://pavel.ondracka.cz/EVE.trace trace?
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--- Comment #11 from Pavel Ondračka <pavel.ondracka@email.cz> ---
(In reply to comment #9)
> Sorry I'm out of ideas. Can the regression be reproduced by some existing
> piglit test maybe?
Sadly there are no changes in quick piglit test, except for glsl-fs-discard-02
and glx-copy-sub-buffer samples=4 and they both pass when I run the manually.
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GitLab Migration User <gitlab-migration@fdo.invalid> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |MOVED
--- Comment #12 from GitLab Migration User <gitlab-migration@fdo.invalid> ---
-- GitLab Migration Automatic Message --
This bug has been migrated to freedesktop.org's GitLab instance and has been
closed from further activity.
You can subscribe and participate further through the new bug through this link
to our GitLab instance: https://gitlab.freedesktop.org/mesa/mesa/issues/357.
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