[Bug 99191] Weird blocky green stuff rendered in High Fidelity

[Bug 99191] Weird blocky green stuff rendered in High Fidelity

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https://bugs.freedesktop.org/show_bug.cgi?id=99191

            Bug ID: 99191
           Summary: Weird blocky green stuff rendered in High Fidelity
           Product: Mesa
           Version: git
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/Gallium/radeonsi
          Assignee: dri-devel@lists.freedesktop.org
          Reporter: haagch@frickel.club
        QA Contact: dri-devel@lists.freedesktop.org

RX 480, mesa git, llvm 4.0.0svn_r290385

They have an OpenGL 4.1 and an OpenGL 4.5 backend and it happens on both.

Here is a video with the 4.3 backend:
https://www.youtube.com/watch?v=VpNFhlzsLHg

Here is a (50 megabyte compressed) trace with the 4.5 backend:
https://haagch.frickel.club/files/interface.trace.xz

Possibly an application bug, but glretrace prints no real errors.

If you want to run it yourself, you will need this fix:
https://github.com/highfidelity/hifi/pull/9264#issuecomment-268943917

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[Bug 99191] Weird blocky green stuff rendered in High Fidelity

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https://bugs.freedesktop.org/show_bug.cgi?id=99191

--- Comment #1 from Samuel Pitoiset <samuel.pitoiset@gmail.com> ---
This app looks like totally buggy.

Rendering is broken with NVIDIA blob and Nouveau on Maxwell, on SKL and
radeonsi. :)

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[Bug 99191] Weird blocky green stuff rendered in High Fidelity

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https://bugs.freedesktop.org/show_bug.cgi?id=99191

smoki <smoki00790@gmail.com> changed:

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

--- Comment #2 from smoki <smoki00790@gmail.com> ---

  Yup, trace does not even run with AMD blob also... likely does not work
anywhere.

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[Bug 99191] Weird blocky green stuff rendered in High Fidelity

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https://bugs.freedesktop.org/show_bug.cgi?id=99191

--- Comment #3 from Samuel Pitoiset <samuel.pitoiset@gmail.com> ---
I think the correct status should be NOTOURBUG but whatever.

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[Bug 99191] Weird blocky green stuff rendered in High Fidelity

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https://bugs.freedesktop.org/show_bug.cgi?id=99191

Christoph Haag <haagch@frickel.club> changed:

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

--- Comment #4 from Christoph Haag <haagch@frickel.club> ---
I've reopened, but feel free to close again if it still doesn't work on other
drivers.

Now that it doesn't hang my GPU anymore I've spent a couple of hours tweaking
the source code, available here:
https://github.com/ChristophHaag/hifi/commits/master

The rendering is better now: The blocky stuff is not green anymore, but it did
not disappear. New video showing the problem:
https://www.youtube.com/watch?v=pda7cNx3ATE

And here is a new trace that runs with an actual 4.5 core context with no mesa
GL errors anymore:
https://haagch.frickel.club/files/interface-blockartifacts.trace.xz (512 mb
uncompressed)

If you want to run this trace right now, you need the patch from bug 102308,
currently on the list
https://lists.freedesktop.org/archives/mesa-dev/2017-August/166827.html

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[Bug 99191] Weird blocky green stuff rendered in High Fidelity

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https://bugs.freedesktop.org/show_bug.cgi?id=99191

--- Comment #5 from Ilia Mirkin <imirkin@alum.mit.edu> ---
Tried it on nouveau, but I get a ton of

Mesa: User error: GL_INVALID_VALUE in glBindBufferRange(offset misaligned
704/256)

This is due to the alignment requirements for constant (and texture) buffers
being higher on NVIDIA hw than AMD hw.

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[Bug 99191] Weird blocky green stuff rendered in High Fidelity

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https://bugs.freedesktop.org/show_bug.cgi?id=99191

Christoph Haag <haagch@frickel.club> changed:

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

--- Comment #6 from Christoph Haag <haagch@frickel.club> ---
It doesn't happen anymore on HiFi's RELEASE-7150 tag and radeonsi git, so
either of them probably fixed it in the meantime.

I'm very happy to close this again.

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