[Bug 107454] BLENDER 2.8 principled BSDF shader and shadow are broken in EEVEE on mesa gallium r600g gpu

[Bug 107454] BLENDER 2.8 principled BSDF shader and shadow are broken in EEVEE on mesa gallium r600g gpu

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https://bugs.freedesktop.org/show_bug.cgi?id=107454

            Bug ID: 107454
           Summary: BLENDER 2.8 principled BSDF shader and shadow are
                    broken in EEVEE on mesa gallium r600g gpu
           Product: Mesa
           Version: git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: major
          Priority: medium
         Component: Drivers/Gallium/r600
          Assignee: dri-devel@lists.freedesktop.org
          Reporter: amonpaike@gmail.com
        QA Contact: dri-devel@lists.freedesktop.org

on the new blender 2.8 under development some shaders and projections of
shadows are broken .. I do not know how to describe the problem technically, I
have already reported the problem to the bug list of blender developers,
although I know that the problem is probably the mesa drivers, because on my
laptop that has two gpu, with the intel gpu the graphics is perfect, with the
gpu amd I have these problems of shading.
For a specific description of the problem, refer to this bug report
https://developer.blender.org/T56211
(the tests were done on the latest mesa drivers built daily by padoka ppa, with
the stable drivers of ubuntu 18.04 eevee shading was totally unusable, so the
situation has improved significantly)

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[Bug 107454] BLENDER 2.8 principled BSDF shader and shadow are broken in EEVEE on mesa gallium r600g gpu

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https://bugs.freedesktop.org/show_bug.cgi?id=107454

--- Comment #1 from Gert Wollny <gw.fossdev@gmail.com> ---
Can you retry with 

R600_DEBUG=nosb blender? 

For me it seems to mostly fix ESM (when comparing to VSM)

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[Bug 107454] BLENDER 2.8 principled BSDF shader and shadow are broken in EEVEE on mesa gallium r600g gpu

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https://bugs.freedesktop.org/show_bug.cgi?id=107454

--- Comment #2 from Gert Wollny <gw.fossdev@gmail.com> ---
Created attachment 141085
  --> https://bugs.freedesktop.org/attachment.cgi?id=141085&action=edit
Shader that gets incorrectly optimized by sb

The attached shader is one of the exampled that gets incorrectly optimized by
sb

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[Bug 107454] BLENDER 2.8 principled BSDF shader and shadow are broken in EEVEE on mesa gallium r600g gpu

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https://bugs.freedesktop.org/show_bug.cgi?id=107454

--- Comment #3 from amonpaike <amonpaike@gmail.com> ---
today the repository padoka ppa has updated the drivers so I could test blender
2.8 ... all the problems are now solved! (Except the shadow ESMs that probably
depend on blender, I will present to the blender developers of the problem)
Great job Thank you !!

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[Bug 107454] BLENDER 2.8 principled BSDF shader and shadow are broken in EEVEE on mesa gallium r600g gpu

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https://bugs.freedesktop.org/show_bug.cgi?id=107454

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

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

--- Comment #4 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/643.

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