[Bug 99484] Crusader Kings 2 - Loading bars, siege bars, morale bars, etc. do not render correctly

[Bug 99484] Crusader Kings 2 - Loading bars, siege bars, morale bars, etc. do not render correctly

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https://bugs.freedesktop.org/show_bug.cgi?id=99484

            Bug ID: 99484
           Summary: Crusader Kings 2 - Loading bars, siege bars, morale
                    bars, etc. do not render correctly
           Product: Mesa
           Version: git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/Gallium/radeonsi
          Assignee: dri-devel@lists.freedesktop.org
          Reporter: xicronical@gmail.com
        QA Contact: dri-devel@lists.freedesktop.org

Created attachment 129084
  --> https://bugs.freedesktop.org/attachment.cgi?id=129084&action=edit
Picture showcasing issue. Bars should always be rectangles.

In game there are often bars to represent loading percentage, unit morale, etc.
They render fine at 100%, but once combat or sieging drops them to a lower
value, they begin rendering insanely and it is impossible to tell how full the
bar actually is just by looking at it. Picture attached showcasing issue. The
game renders correctly in AMDGPU-PRO.

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[Bug 99484] Crusader Kings 2 - Loading bars, siege bars, morale bars, etc. do not render correctly

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https://bugs.freedesktop.org/show_bug.cgi?id=99484

--- Comment #1 from Samuel Pitoiset <samuel.pitoiset@gmail.com> ---
Can you try recording an apitrace which reproduces the issue? Thanks!

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[Bug 99484] Crusader Kings 2 - Loading bars, siege bars, morale bars, etc. do not render correctly

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https://bugs.freedesktop.org/show_bug.cgi?id=99484

--- Comment #2 from Timothy Arceri <t_arceri@yahoo.com.au> ---
You can see the issue in the progress bar on the main loading screen:

https://drive.google.com/open?id=0B-f68fD4PtpBZmx0M2VPUU1oRms

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[Bug 99484] Crusader Kings 2 - Loading bars, siege bars, morale bars, etc. do not render correctly

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https://bugs.freedesktop.org/show_bug.cgi?id=99484

--- Comment #3 from Timothy Arceri <t_arceri@yahoo.com.au> ---
The game requests a compatibility profile but its using OpenGL features from
3.1+. Overriding the version doesn't fix the issue, so may be related, may not.

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[Bug 99484] Crusader Kings 2 - Loading bars, siege bars, morale bars, etc. do not render correctly

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https://bugs.freedesktop.org/show_bug.cgi?id=99484

--- Comment #4 from Timothy Arceri <t_arceri@yahoo.com.au> ---
(In reply to Timothy Arceri from comment #3)
> The game requests a compatibility profile but its using OpenGL features from
> 3.1+. Overriding the version doesn't fix the issue, so may be related, may
> not.

Umm. I'm not sure what made me think this is using 3.1+ but I don't think that
is correct.

Also running the trace on i965 produces correct output.

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[Bug 99484] Crusader Kings 2 - Loading bars, siege bars, morale bars, etc. do not render correctly

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https://bugs.freedesktop.org/show_bug.cgi?id=99484

--- Comment #5 from Timothy Arceri <t_arceri@yahoo.com.au> ---
Running Mesa master with llvm 3.8 (instead of 5.0 from git) resolves the
problem.

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[Bug 99484] Crusader Kings 2 - Loading bars, siege bars, morale bars, etc. do not render correctly

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https://bugs.freedesktop.org/show_bug.cgi?id=99484

--- Comment #6 from Andreas Boll <andreas.boll.dev@gmail.com> ---
(In reply to Timothy Arceri from comment #5)
> Running Mesa master with llvm 3.8 (instead of 5.0 from git) resolves the
> problem.

Be aware that llvm 3.8 degrades OpenGL support for radeonsi. Just check your
glxinfo output.

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[Bug 99484] Crusader Kings 2 - Loading bars, siege bars, morale bars, etc. do not render correctly

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https://bugs.freedesktop.org/show_bug.cgi?id=99484

--- Comment #7 from Timothy Arceri <t_arceri@yahoo.com.au> ---
Bisected the llvm regression to a change in llvm 4.0

  commit f991e38d156c4c10c609ca8425a7c31b951ecbed
  Author: James Molloy <james.molloy@arm.com>
  Date:   Thu Sep 1 10:44:35 2016 +0000

    [SimplifyCFG] Change the algorithm in SinkThenElseCodeToEnd

However the output from R600_DEBUG=vs,fs is identical apart from the value of
code_size reported for one of the shaders.

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[Bug 99484] Crusader Kings 2 - Loading bars, siege bars, morale bars, etc. do not render correctly

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https://bugs.freedesktop.org/show_bug.cgi?id=99484

Timothy Arceri <t_arceri@yahoo.com.au> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                URL|                            |https://bugs.llvm.org/show_
                   |                            |bug.cgi?id=32001

--- Comment #8 from Timothy Arceri <t_arceri@yahoo.com.au> ---
Adding llvm bug report.

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[Bug 99484] Crusader Kings 2 - Loading bars, siege bars, morale bars, etc. do not render correctly

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https://bugs.freedesktop.org/show_bug.cgi?id=99484

--- Comment #9 from Samuel Pitoiset <samuel.pitoiset@gmail.com> ---
A possible fix here https://reviews.llvm.org/D30609.

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[Bug 99484] Crusader Kings 2 - Loading bars, siege bars, morale bars, etc. do not render correctly

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https://bugs.freedesktop.org/show_bug.cgi?id=99484

Samuel Pitoiset <samuel.pitoiset@gmail.com> changed:

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

--- Comment #10 from Samuel Pitoiset <samuel.pitoiset@gmail.com> ---
Just pushed a workaround for this issue in Mesa.

https://cgit.freedesktop.org/mesa/mesa/commit/?id=7751ed39e40e08e5aa0633d018c9f25ad17f9bb0

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