[Bug 98856] DIRT: Showdown broken graphics with Mesa built with -Ofast

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=98856

Timothy Arceri  changed:

   What|Removed |Added

 Status|NEW |RESOLVED
 Resolution|--- |NOTABUG

--- Comment #10 from Timothy Arceri  ---
Ofast disregards strict standards compliance. -Ofast enables all -O3
optimizations. It also enables optimizations that are not valid for all
standard-compliant programs.

In other words don't use it with Mesa :)

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[Bug 98856] DIRT: Showdown broken graphics with Mesa built with -Ofast

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=98856

--- Comment #9 from Gregor Münch  ---
Still the same with -Ofast.

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[Bug 98856] DIRT: Showdown broken graphics with Mesa built with -Ofast

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=98856

Vedran Miletić  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 98856] DIRT: Showdown broken graphics with Mesa built with -Ofast

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=98856

--- Comment #8 from Gregor Münch  ---
Created attachment 130076
  --> https://bugs.freedesktop.org/attachment.cgi?id=130076=edit
garbled graphics #1

Found the problem. Seems like using -Ofast wasnt a good idea. Using -03
everything works as it should.
Still attaching screenshot showing the problem in case it is useful to others.

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[Bug 98856] DIRT: Showdown broken graphics with Mesa built with -Ofast

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=98856

Gregor Münch  changed:

   What|Removed |Added

Summary|[Regression, SI] DIRT:  |DIRT: Showdown broken
   |Showdown broken graphics|graphics with Mesa built
   ||with -Ofast

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[Bug 98856] Dirt: Showdown broken graphics

[bugzilla-dae...@freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=98856

--- Comment #1 from Samuel Pitoiset  ---
Could you provide an apitrace that reproduces the issue?

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[Bug 98856] Dirt: Showdown broken graphics

[bugzilla-dae...@freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=98856

Bug ID: 98856
   Summary: Dirt: Showdown broken graphics
   Product: Mesa
   Version: git
  Hardware: x86-64 (AMD64)
OS: Linux (All)
Status: NEW
  Severity: normal
  Priority: medium
 Component: Drivers/Gallium/radeonsi
  Assignee: dri-devel at lists.freedesktop.org
  Reporter: gr.muench at gmail.com
QA Contact: dri-devel at lists.freedesktop.org

For about 4 weeks the game has polygon distortion especially on the Nevada map.
Its not on every map but it can be seen with the ingame benchmark.


Im on:
Radeon HD 7970
OpenGL renderer string: Gallium 0.4 on AMD TAHITI (DRM 2.48.0 /
4.9.0-rc4-gbc33b0c, LLVM 4.0.0)
OpenGL core profile version string: 4.5 (Core Profile) Mesa 13.1.0-devel
(git-b27be18)

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