[Bug 102387] Assertion failure with UE4Editor and sb enabled

[Bug 102387] Assertion failure with UE4Editor and sb enabled

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=102387

            Bug ID: 102387
           Summary: Assertion failure with UE4Editor and sb enabled
           Product: Mesa
           Version: git
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/Gallium/r600
          Assignee: dri-devel@lists.freedesktop.org
          Reporter: gw.fossdev@gmail.com
        QA Contact: dri-devel@lists.freedesktop.org

Created attachment 133745
  --> https://bugs.freedesktop.org/attachment.cgi?id=133745&action=edit
TGSI and byte code of the buggy shader

When running UE4Editor (4.17) on BARTS with -opengl3 and mesa (1e696b9) is
compiled in debug mode I get the following assertion failure on one shader
(attached), that then leads to UE4Editor shutting down: 

  error at : MUL_IEEE     R17.x.5F@R124.x,    R14.x.5F@R124.x, R90.x.22||F@R2.w
   : expected operand value R90.x.22||F@R2.w, gpr contains t39||FP@R2.w
  sb/sb_ra_checker.cpp:46:run: Assertion `sh.errors.empty()' failed.

Sometimes it happens right away, when loading the assets, sometimes I have to
load a specific level. I guess it depends on what assets are actually
displayed.  

If I disable the assertion then I can use UE4Editor (I still need to add a
patch to work around to a problem introduced by another shader that for some
bug in UE4 exceeds the limits of the GPRs, but this has nothing to do which
this assertion failure).

Best, 
Gert

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[Bug 102387] Assertion failure with UE4Editor and sb enabled

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=102387

Gert Wollny <gw.fossdev@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
 Attachment #133745|TGSI and byte code of the   |TGSI and byte code of the
        description|buggy shader                |offending  shader

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[Bug 102387] Assertion failure with UE4Editor and sb enabled

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=102387

GitLab Migration User <gitlab-migration@fdo.invalid> changed:

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

--- Comment #1 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/609.

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