[Bug 102814] Blender 2.79 flickering

[Bug 102814] Blender 2.79 flickering

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https://bugs.freedesktop.org/show_bug.cgi?id=102814

            Bug ID: 102814
           Summary: Blender 2.79 flickering
           Product: Mesa
           Version: 17.2
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/Gallium/radeonsi
          Assignee: dri-devel@lists.freedesktop.org
          Reporter: freedesktop@ca.sh13.net
        QA Contact: dri-devel@lists.freedesktop.org

The recently released Blender 2.79 doesn't work with Blender 2.79 at all, I'm
getting super heavy flickering inside the viewport, where it looks like it's
swapping between old contents previously rendered, and the "current" content
(i.e. for instance the rendering view sometimes jumps between now and 1 second
ago.) This makes Blender 2.79 unusable, 2.78 is working fine.

I'm using Kubuntu 17.04, RX 480, with the Padoka Stable Mesa, so Mesa 17.2.

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[Bug 102814] Blender 2.79 flickering

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https://bugs.freedesktop.org/show_bug.cgi?id=102814

--- Comment #1 from freedesktop@ca.sh13.net ---
Should be of course "... the recently released Blender 2.79 doesn't work with
Mesa 17.2 at all ...", a kingdom for an edit button :)

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[Bug 102814] Blender 2.79 flickering

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https://bugs.freedesktop.org/show_bug.cgi?id=102814

--- Comment #2 from network723@rkmail.ru ---
I think it's related to bug #98784, try starting blender with
LIBGL_DRI3_DISABLE=1

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[Bug 102814] Blender 2.79 flickering

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https://bugs.freedesktop.org/show_bug.cgi?id=102814

--- Comment #3 from freedesktop@ca.sh13.net ---
Indeed, that solves the issue. I guess this needs to be filed with Blender
then?

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[Bug 102814] Blender 2.79 flickering

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https://bugs.freedesktop.org/show_bug.cgi?id=102814

--- Comment #4 from Luke A. Guest <laguest@archeia.com> ---
Turn on triple buffering, this is an old issue that's been reported before.

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[Bug 102814] Blender 2.79 flickering

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https://bugs.freedesktop.org/show_bug.cgi?id=102814

--- Comment #5 from freedesktop@ca.sh13.net ---
It can't be old because Blender 2.79 is brand-new (released last week) and
Blender 2.78 didn't suffer from this issue.

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[Bug 102814] Blender 2.79 flickering

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https://bugs.freedesktop.org/show_bug.cgi?id=102814

--- Comment #6 from Dieter Nützel <Dieter@nuetzel-hh.de> ---
Maybe overwritten 'new' defaults (on your side/distro), then?
Simple fix is proposed, here:
https://bugs.freedesktop.org/show_bug.cgi?id=97059#c9

The old Blender bug should be fixed in Blender 2.8 (hopefully).
NO change for Blender master planed, like in this post:
https://developer.blender.org/T49945

Proposed fix for Blender master was:
https://developer.blender.org/D2342

Anyway, try bisecting Blender, Mesa if you think it is a new regression.

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[Bug 102814] Blender 2.79 flickering

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https://bugs.freedesktop.org/show_bug.cgi?id=102814

--- Comment #7 from Luke A. Guest <laguest@archeia.com> ---
(In reply to freedesktop from comment #5)
> It can't be old because Blender 2.79 is brand-new (released last week) and
> Blender 2.78 didn't suffer from this issue.

It is and it did. I had to turn it on for 2.78 and then turn it back on for
2.79 because it decided to overwrite the settings. e.g. from 2016
https://developer.blender.org/T49537

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[Bug 102814] Blender 2.79 flickering

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https://bugs.freedesktop.org/show_bug.cgi?id=102814

Michel Dänzer <michel@daenzer.net> changed:

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

--- Comment #8 from Michel Dänzer <michel@daenzer.net> ---


*** This bug has been marked as a duplicate of bug 97059 ***

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