[Bug 102581] 3D texture mipmapping broken

[Bug 102581] 3D texture mipmapping broken

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=102581

            Bug ID: 102581
           Summary: 3D texture mipmapping broken
           Product: Mesa
           Version: 17.1
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/Gallium/radeonsi
          Assignee: dri-devel@lists.freedesktop.org
          Reporter: mail@felix-potthast.de
        QA Contact: dri-devel@lists.freedesktop.org

Created attachment 134041
  --> https://bugs.freedesktop.org/attachment.cgi?id=134041&action=edit
Screenshot comparison

When trying to display 
https://www.shadertoy.com/view/4llcR4
i get artifacts near horizon due to mipmapping (artifacts are absent with
mipmapping disabled).
It works as expected with the proprietary driver (under Windows) on the same
machine.
See attached image for Screenshot comparison.

So either mipmap generation or display seems to be erroneous for 3D textures.

My card is AMD Radeon HD 7870.

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[Bug 102581] 3D texture mipmapping broken

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https://bugs.freedesktop.org/show_bug.cgi?id=102581

--- Comment #1 from Michel Dänzer <michel@daenzer.net> ---
Please attach the corresponding glxinfo output.

FWIW, not seeing the problem on Kaveri with recent Git master.

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[Bug 102581] 3D texture mipmapping broken

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https://bugs.freedesktop.org/show_bug.cgi?id=102581

--- Comment #2 from Felix Potthast <mail@felix-potthast.de> ---
Created attachment 134096
  --> https://bugs.freedesktop.org/attachment.cgi?id=134096&action=edit
Glxinfo output

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[Bug 102581] 3D texture mipmapping broken

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https://bugs.freedesktop.org/show_bug.cgi?id=102581

Felix Potthast <mail@felix-potthast.de> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Version|17.1                        |17.2

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[Bug 102581] 3D texture mipmapping broken

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https://bugs.freedesktop.org/show_bug.cgi?id=102581

--- Comment #3 from Felix Potthast <mail@felix-potthast.de> ---
Added glxinfo attachment.
Also upgraded to Mesa 17.2, but the problem still exists, glxinfo log is from
new version.

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[Bug 102581] 3D texture mipmapping broken

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https://bugs.freedesktop.org/show_bug.cgi?id=102581

--- Comment #4 from Nicolai Hähnle <nhaehnle@gmail.com> ---
Maybe an SI-specific bug? Looks like the bottom part of the screenshot
comparison for me on both Carrizo and Tonga (VI) with Git master.

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[Bug 102581] 3D texture mipmapping broken

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https://bugs.freedesktop.org/show_bug.cgi?id=102581

--- Comment #5 from Felix Potthast <mail@felix-potthast.de> ---
Created attachment 143426
  --> https://bugs.freedesktop.org/attachment.cgi?id=143426&action=edit
Test program

The bug is still present for me with mesa 18.3.4-1
I wrote a little test program which compares an uploaded
3dtexture mipmap with the corresponding output of glGetTexImage.

It should output nothing, but on my desktop pc it outputs:

Error in level 2
Error in level 3
Error in level 4

Compile with "gcc test.c -o test -lglfw -lepoxy"

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[Bug 102581] 3D texture mipmapping broken

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https://bugs.freedesktop.org/show_bug.cgi?id=102581

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

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

--- Comment #6 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/1280.

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