[Mesa-dev] [Bug 96381] Texture artifacts with immutable texture storage and mipmaps

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=96381

            Bug ID: 96381
           Summary: Texture artifacts with immutable texture storage and
                    mipmaps
           Product: Mesa
           Version: 11.2
          Hardware: Other
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Other
          Assignee: mesa-dev at lists.freedesktop.org
          Reporter: dark.shadow4 at web.de
        QA Contact: mesa-dev at lists.freedesktop.org

Created attachment 124320
  --> https://bugs.freedesktop.org/attachment.cgi?id=124320&action=edit
Screenshot showing the artifacts

Playing a game on wine (NekoPara on steam), and got texture artifacts. I don't
really know what causes it since I can't reproduce it on my own, but I created
an apitrace to help with testing.

Some things I found out, artifacts disappear when:

1) LIBGL_ALWAYS_SOFTWARE=1 is set, or
2) glTexStorage2D is forced use no mipmaps, or
3) glTexImage2D is used instead of glTexStorage2D

Tested on OpenSuse Tumbleweed 64bit with latest mesa (11.2 and git 12.0), with
amdgpu and a Radeon R9 285.
Issue is not present when tested on another system, apitrace works on another
PC.

Screenshot attached.
Apitrace:
http://www.mediafire.com/download/tk5z5r9ag0898qf/wine-preloader_NekoPara0.7z
(35MB, 197MB unpacked)

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