Bug 67241 - [IVB/HSW bisected] 3DMMES v2.0 render error ”Green Screen” with gnome-session enabling SNA
Summary: [IVB/HSW bisected] 3DMMES v2.0 render error ”Green Screen” with gnome-session...
Status: VERIFIED FIXED
Alias: None
Product: xorg
Classification: Unclassified
Component: Driver/intel (show other bugs)
Version: unspecified
Hardware: All Linux (All)
: high major
Assignee: Chris Wilson
QA Contact: Intel GFX Bugs mailing list
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2013-07-24 05:59 UTC by meng
Modified: 2013-07-26 09:23 UTC (History)
0 users

See Also:
i915 platform:
i915 features:

Attachments
dmesg.log (11.40 KB, text/plain)
2013-07-24 05:59 UTC, meng 		no flags Details
Xorg.0.log (18.73 KB, text/plain)
2013-07-24 06:00 UTC, meng 		no flags Details
scrot for the problem (36.42 KB, image/png)
2013-07-24 06:00 UTC, meng 		no flags Details
HSW-ULT_urbanterror_Xorg.0.log (19.13 KB, text/plain)
2013-07-26 05:40 UTC, meng 		no flags Details
View All

Description meng 2013-07-24 05:59:02 UTC 
System Environment:       
----------------------------------------------
Platform:  IVB/HSW
Mesa:	         (master)5a7bdd4b4173958c53109517b7c95f1039623e7e
Xf86_video_intel:(master)74dd10d252df2d826b6db5da7e53bd7c5d76dec0	
Kernel:	(drm-intel-nightly) 1a7fc2d3e919e151a2e87dd6c98f20eccf95e041

Bug detailed description:
----------------------------------------------
3DMMES v2.0 render error ”Green Screen” with gnome-session enabling SNA on IVB/HSW. It would be Ok on Raw X(xinit) or disable SNA. 
BTW, the render error make 3DMMES v2.0 performance “improved” such as:
3DMMES v2.0 taiji 147 -> 178 fps.
Please see Xorg.0.log and dmesg.

It’s xf86_video_intel regression, bisecting show the first bad commit is that:
commit e5036fb15983a1d3547eaab381c18b3edf4310b4
Author: Chris Wilson <chris@chris-wilson.co.uk>
Date:   Fri Jul 19 11:51:40 2013 +0100

    sna/dri: Reject invalid DRI2Drawables if STRICT_BLIT is defined


Reproduce steps:
---------------------------------------------
1. enable SNA
2. xinit&
3. gnome-session
4. run 3DMMES v2.0
Comment 1 meng 2013-07-24 05:59:31 UTC 
Created attachment 82897 [details]
dmesg.log
Comment 2 meng 2013-07-24 06:00:10 UTC 
Created attachment 82898 [details]
Xorg.0.log
Comment 3 meng 2013-07-24 06:00:50 UTC 
Created attachment 82899 [details]
scrot for the problem
Comment 4 Chris Wilson 2013-07-24 09:08:10 UTC 
It should be informing you about the race behind errors such as #64940 and #66606. ./configure --enable-debug=full will give the reason why it rejected the DRI2 blit.
Comment 5 meng 2013-07-25 01:02:10 UTC 
(In reply to comment #4)
> It should be informing you about the race behind errors such as #64940 and
> #66606. ./configure --enable-debug=full will give the reason why it rejected
> the DRI2 blit.

Hi Chris, how can I add "./configure --enable-debug=full"? Does it need other testing?
Comment 6 meng 2013-07-26 05:40:56 UTC 
Created attachment 83015 [details]
HSW-ULT_urbanterror_Xorg.0.log

HSW ULT would blank screen, when run 3D OpenGL case such as urbanterror,Smokin' Guns.
Comment 7 Chris Wilson 2013-07-26 06:44:47 UTC 
The root cause is the same missing DRI2Invalidate (https://bugs.freedesktop.org/attachment.cgi?id=81263) worked around by

commit 6f5fd772c7ca656b86394a0f036d4e0cf5b33d8e
Author: Chris Wilson <chris@chris-wilson.co.uk>
Date:   Thu Jul 25 08:29:55 2013 +0100

    sna/dri: Discard the strict checking for stale bo before performing a blit
Comment 8 meng 2013-07-26 09:23:43 UTC 
Verified it with above commit.

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