[Bug 27609] New: Regression: r600 CS checker rejects narrow FBO renderbuffers.

[Bug 27609] New: Regression: r600 CS checker rejects narrow FBO renderbuffers.

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=27609

           Summary: Regression: r600 CS checker rejects narrow FBO
                    renderbuffers.
           Product: DRI
           Version: unspecified
          Platform: Other
        OS/Version: All
            Status: NEW
          Severity: major
          Priority: medium
         Component: DRM/Radeon
        AssignedTo: dri-devel@lists.freedesktop.org
        ReportedBy: nbowler@draconx.ca


Created an attachment (id=34944)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=34944)
Full kernel log including failure message.

The R600 CS checker recently merged into the mainline kernel breaks rendering
to FBOs with renderbuffers of width <= 48.  The height does not matter.
Attempting to run such a program terminates with

  drmRadeonCmdBuffer: -22. Kernel failed to parse or rejected command stream.
  See dmesg for more info.

and in dmesg:
  radeon 0000:03:00.0: r600_cs_track_validate_cb:198 cb pitch (32 x 4 = 128)
invalid
  radeon 0000:03:00.0: r600_packet3_check:1109 invalid cmd stream 514
  [drm:radeon_cs_ioctl] *ERROR* Invalid command stream !

Please see the test case attached to bug 27590 for a program which triggers
this issue.  The program works on Linux 2.6.33 and with the software
rasterizer.  The problem is reproducible with both mesa 7.8.1 and git master,
against latest Linus git kernel.

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[Bug 27609] Regression: r600 CS checker rejects narrow FBO renderbuffers.

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=27609

--- Comment #1 from Nick Bowler <nbowler@draconx.ca> 2010-04-12 18:50:33 PDT ---
I forgot to mention that the test program also (obviously) works if you adjust
the renderbuffer width (-DXRES=##) to be at least 49.

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[Bug 27609] Regression: r600 CS checker rejects narrow FBO renderbuffers.

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=27609

Martin Peres <martin.peres@free.fr> changed:

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

--- Comment #2 from Martin Peres <martin.peres@free.fr> ---
-- 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/drm/amd/issues/123.

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