[Bug 99995] New: Dirt showdown very low fps (~3fps) after update mesa

[Bug 99995] New: Dirt showdown very low fps (~3fps) after update mesa

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https://bugs.freedesktop.org/show_bug.cgi?id=99995

            Bug ID: 99995
           Summary: Dirt showdown very low fps (~3fps) after update mesa
           Product: Mesa
           Version: 17.0
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/DRI/nouveau
          Assignee: nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
          Reporter: kevin01010-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org
        QA Contact: nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org

Hi, I updated from mesa 13.0.x to 17.0 and Dirt showdown in mesa 13 has around
25 fps and with mesa 17 has about 2fps..
I tried in ArchLinux and Fedora (fedora 26 mesa builds), and is the same, mesa
13 works a lot better in this game

My computer is a i5 4690 and has a Nvidia GTX 750

Mesa 17: CPU is 1 core 100% and the rest about 10%
Mesa 13.0.4: CPU is about 15-20% all cores

Maybe mesa is taking all work to CPU?

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[Bug 99995] Dirt showdown very low fps (~3fps) after update mesa

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https://bugs.freedesktop.org/show_bug.cgi?id=99995

--- Comment #1 from Ilia Mirkin <imirkin-FrUbXkNCsVf2fBVCVOL8/A@public.gmane.org> ---
One difference is that 17.0 has GL 4.3 enabled for Maxwell (e.g. GTX 750),
which perhaps causes the game to choose a different path, thus not really be
directly comparable. Try it with

MESA_GL_VERSION_OVERRIDE=4.1

which will get it back to the same GL version that was available with 13.0. Or
try it with

MESA_EXTENSION_OVERRIDE='-GL_ARB_shader_image_load_store
-GL_ARB_compute_shader'

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[Bug 99995] Dirt showdown very low fps (~3fps) after update mesa

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https://bugs.freedesktop.org/show_bug.cgi?id=99995

--- Comment #2 from Gregor Münch <gr.muench-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> ---
Maybe related:
With higher GL versions, Dirt enables "advanced lighting" options in the
graphics menu. Setting this to "On" makes the game basically a slide show. But
Im on a Radeon HD 7970. Also all other Radeon cards have a performance problem:
http://www.phoronix.com/scan.php?page=article&item=mesa171-pro60-rx470&num=2

where figures looked better in 2015:
http://www.phoronix.com/scan.php?page=article&item=dirt-showdown-linux&num=3

Some more infos about the lightning options:
http://www.rage3d.com/articles/gaming/codemaster_dirt_showdown_tech_review/index.php?p=2

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[Bug 99995] Dirt showdown very low fps (~3fps) after update mesa

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--- Comment #3 from Kevin Puertas <kevin01010-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> ---
(In reply to Ilia Mirkin from comment #1)

> One difference is that 17.0 has GL 4.3 enabled for Maxwell (e.g. GTX 750),
> which perhaps causes the game to choose a different path, thus not really be
> directly comparable. Try it with
> 
> MESA_GL_VERSION_OVERRIDE=4.1

If I export this before opening steam, steam causes a segfault


> Or try it with
> 
> MESA_EXTENSION_OVERRIDE='-GL_ARB_shader_image_load_store
> -GL_ARB_compute_shader'

If I try this, game loads smooth and works about 45fps, better than with mesa
13



(In reply to Gregor Münch from comment #2)
>With higher GL versions, Dirt enables "advanced lighting" options in the graphics menu.
At least for me, it is there, but Off in all the tests

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[Bug 99995] Dirt showdown very low fps (~3fps) after update mesa

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--- Comment #4 from Ilia Mirkin <imirkin-FrUbXkNCsVf2fBVCVOL8/A@public.gmane.org> ---
The speed improvement on Maxwell is expected - Mesa 17.0 starts to add proper
shader instruction scheduling information. In various tests it has improved
overall perf ~2x (varies a lot based on how shader-computation-limited the
software is, vs memory bandwidth-limited).

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[Bug 99995] Dirt showdown very low fps (~3fps) after update mesa

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--- Comment #5 from Kevin Puertas <kevin01010-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> ---
(In reply to Ilia Mirkin from comment #4)
> The speed improvement on Maxwell is expected - Mesa 17.0 starts to add
> proper shader instruction scheduling information. In various tests it has
> improved overall perf ~2x (varies a lot based on how
> shader-computation-limited the software is, vs memory bandwidth-limited).

I know :)
But I dont know why I have to "workaround" mesa this way to play, maybe there
are lot of people that not know this too and it are with mesa 17..

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[Bug 99995] Dirt showdown very low fps (~3fps) after update mesa

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Vedran Miletić <vedran-v8Fv/IwHOXbR7s880joybQ@public.gmane.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Blocks|                            |77449


Referenced Bugs:

https://bugs.freedesktop.org/show_bug.cgi?id=77449
[Bug 77449] Tracker bug for all bugs related to Steam titles
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[Bug 99995] Dirt showdown very low fps (~3fps) after update mesa

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--- Comment #6 from Gregor Münch <gr.muench-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> ---
Just want to add, using:

MESA_EXTENSION_OVERRIDE='-GL_ARB_shader_image_load_store
-GL_ARB_compute_shader'

Makes the advanced lightning options disappear in the options.

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GitLab Migration User <gitlab-migration-wf5LKTHn7b+es5Oj371l6A@public.gmane.org> changed:

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

--- Comment #7 from GitLab Migration User <gitlab-migration-wf5LKTHn7b+es5Oj371l6A@public.gmane.org> ---
-- 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/1129.

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