Bug 39577

Summary: [bisected SNB]oglc multicontext(advanced.sharing.program.deleteInOriginal) fails
Product: Mesa Reporter: fangxun <xunx.fang>
Component: Drivers/DRI/i965Assignee: Eric Anholt <eric>
Status: VERIFIED FIXED QA Contact:
Severity: normal    
Priority: high CC: eric
Version: git   
Hardware: All   
OS: Linux (All)   
Whiteboard:
i915 platform: i915 features:

Description fangxun 2011-07-26 20:19:38 UTC 
System Environment:
--------------------------
Arch:           i386
Platform:       huronriver 
Libdrm:         (master)2.4.26-2-gce317a6d09bb93cff73703b06e5a5bc3cc0b1c6a
Mesa:           (master)b189d1635d89cd7d900e8f9a5eed88d7dc0b46cb
Xserver:       (master)xorg-server-1.10.99.901-115-g73864a87aacbce85b520ccaa6e360b82c0e99716
Xf86_video_intel: (master)2.15.0-206-g1b9e82b4b59dd50c1b057f58d71d5c04dcc648a7
Kernel_unstable:  (drm-intel-next)df7976797fa9af161690dbf4dee81ed92cdc150f


Bug detailed description:
-------------------------
It's regression and only happens on sandybridge. 
multicontext(advanced.sharing.deleteInShared.program) and multicontext(advanced.sharing.program.deleteObjectInUse) also fail due to the same cause. Bisect find a0e5affb22da50aeb30262f5ba0912b059d858ea is the first bad commit.
commit a0e5affb22da50aeb30262f5ba0912b059d858ea
Author:     Eric Anholt <eric@anholt.net>
AuthorDate: Thu May 19 11:02:14 2011 -0700
Commit:     Eric Anholt <eric@anholt.net>
CommitDate: Mon Jul 25 13:47:18 2011 -0700

    i965: Use 3D clears on gen6+ to avoid inter-ring synchronization.

    Improves firefox-talos-gfx around 5%.


Reproduce steps:
----------------
1. start X
2. ./oglconform -z -s -suite all -v 2 -D 115 -test multicontext advanced.sharing.program.deleteInOriginal
Comment 1 Gordon Jin 2011-09-19 21:58:58 UTC 
Eric/Ian, comments?
Comment 2 Eric Anholt 2011-09-20 16:25:47 UTC 
Patches out for review
Comment 3 Eric Anholt 2011-09-22 16:52:42 UTC 
commit bda09aeb20f183407038672318c8f657feb9fe54
Author: Eric Anholt <eric@anholt.net>
Date:   Tue Sep 20 16:21:13 2011 -0700

    clear-with-deleted: New test for a metaops refcounting bug.
    
    Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=39577
    Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>

commit a140c3e7837725bfa610c9f842a95201b661c773
Author: Eric Anholt <eric@anholt.net>
Date:   Tue Sep 20 16:23:57 2011 -0700

    meta: Don't hang on to program refcounts after metaops are done.
    
    Fixes piglit ARB_shader_objects/clear-with-deleted.
    
    Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=39577
    Reviewed-by: Brian Paul <brianp@vmware.com>
Comment 4 fangxun 2011-09-25 22:19:08 UTC 
Verified with Mesa master commit 06ae4a62b1b3c668a5b50661df25d87f8c2679ef.

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