[Bug 27571] New: Regression: r600 CS checker rejects GL_DEPTH_TEST w/o depth buffer.

[Bug 27571] New: Regression: r600 CS checker rejects GL_DEPTH_TEST w/o depth buffer.

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=27571

           Summary: Regression: r600 CS checker rejects GL_DEPTH_TEST w/o
                    depth buffer.
           Product: DRI
           Version: unspecified
          Platform: Other
        OS/Version: All
            Status: NEW
          Severity: major
          Priority: medium
         Component: DRM/Radeon
        AssignedTo: dri-devel@lists.sourceforge.net
        ReportedBy: nbowler@draconx.ca


Created an attachment (id=34858)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=34858)
Test case.

The command stream checker recently added to the radeon driver kills
programs which render to a target which does not have a depth buffer
whilst GL_DEPTH_TEST is enabled.  Instead of simply not performing
depth buffer operations, the result is program termination and some
rather cryptic error messages:

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

and in dmesg:
  radeon 0000:03:00.0: z/stencil with no depth buffer
  radeon 0000:03:00.0: r600_packet3_check:1109 invalid cmd stream 815
  [drm:radeon_cs_ioctl] *ERROR* Invalid command stream !

I first noticed this when a program that works using 2.6.33 died
rendering to a FBO, but it is trivially reproducible without using
anything fancy.  A test case is attached which works normally with
either Linux 2.6.33, the software rasterizer, or the intel driver.
The failure is reproducible with both mesa 7.8.1 and git master.

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[Bug 27571] Regression: r600 CS checker rejects GL_DEPTH_TEST w/o depth buffer.

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=27571

--- Comment #1 from Nick Bowler <nbowler@draconx.ca> 2010-04-09 21:58:27 PDT ---
Created an attachment (id=34859)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=34859)
Full kernel log.

Just in case it's needed.

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[Bug 27571] Regression: r600 CS checker rejects GL_DEPTH_TEST w/o depth buffer.

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=27571

--- Comment #2 from Nick Bowler <nbowler@draconx.ca> 2010-04-11 17:00:36 PDT ---
The fbo-nodepth piglit test also triggers this issue.

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[Bug 27571] Regression: r600 CS checker rejects GL_DEPTH_TEST w/o depth buffer.

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=27571

Nick Bowler <nbowler@draconx.ca> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  Attachment #34859|0                           |1
        is obsolete|                            |

--- Comment #3 from Nick Bowler <nbowler@draconx.ca> 2010-04-12 18:54:00 PDT ---
Created an attachment (id=34947)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=34947)
Actual full kernel log.

I just realized that the previous "Full kernel log" was truncated and hence
wasn't so full, after all.

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[Bug 27571] Regression: r600 CS checker rejects GL_DEPTH_TEST w/o depth buffer.

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=27571

Jerome Glisse <glisse@freedesktop.org> changed:

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

--- Comment #4 from Jerome Glisse <glisse@freedesktop.org> 2010-04-23 03:15:19 PDT ---
Fixed with commit:

http://cgit.freedesktop.org/mesa/mesa/commit/?id=eb4dc547885994cc7961f7996c33ff484f664964

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