Bug 47388 - [i965] Piglit fbo/fbo-sys-blit randomly fails under compositor
Summary: [i965] Piglit fbo/fbo-sys-blit randomly fails under compositor
Status: VERIFIED FIXED
Alias: None
Product: Mesa
Classification: Unclassified
Component: Drivers/DRI/i965 (show other bugs)
Version: git
Hardware: All Linux (All)
: high major
Assignee: Ian Romanick
QA Contact:
URL:
Whiteboard:
Keywords:
: 47129 (view as bug list)
Depends on:
Blocks:
 
Reported: 2012-03-15 20:35 UTC by lu hua
Modified: 2014-08-12 06:26 UTC (History)
1 user (show)

See Also:
i915 platform:
i915 features:

Attachments
Only invalidate if the WindowPixmap changes (2.75 KB, patch)
2012-03-16 13:20 UTC, Chris Wilson 		Details | Splinter Review
Flush writes to FakeFront on creation (3.01 KB, patch)
2012-07-05 03:09 UTC, Chris Wilson 		Details | Splinter Review
Show Obsolete (1) View All

Description lu hua 2012-03-15 20:35:20 UTC 
System Environment:
--------------------------
Arch:             i386
Platform:         Ivybridge
Libdrm:		(master)2.4.31-17-g99c73378a1b440bcf594742445dfe14ab1e89128
Mesa:		(master)99cd475cc9d3bd54140f84c24b55b9e05d7310a1
Xserver:  	(master)xorg-server-1.12.0-1-ga615b90cab7569fae9d123e4da1d3373c871d84b
Xf86_video_intel:(master)2.18.0-98-g27f8f121b3d7433c6c3470b048428ca088acd2c9
Libva:		(vaapi-ext)f8be4a5477e58c4a27170f0c87eeedac8de60aef
Libva_intel_driver:(vaapi-ext)304bf4dd752c5d0edd6bcdf87efaaa7db503a1c3
Kernel: 	(drm-intel-next-queued) fa37d39e4c6622d80bd8061d600701bcea1d6870

Bug detailed description:
-----------------------------
It happens on sandybridge, ivybridge and ironlake with mese master branch and mesa 8.0 branch.
It fails 9 in 20 cycles under gnome mode.
It passes under X mode.
Case 'fbo/fbo-sys-sub-blit' also randomly fails.

Output:
Probe at (0,0)
  Expected: 0.000000 1.000000 0.000000
  Observed: 0.000000 0.000000 0.000000
Probe at (127,0)
  Expected: 0.000000 1.000000 0.000000
  Observed: 0.000000 0.000000 0.000000
Probe at (0,127)
  Expected: 0.000000 1.000000 0.000000
  Observed: 0.000000 0.000000 0.000000
Probe at (127,127)
  Expected: 0.000000 1.000000 0.000000
  Observed: 0.000000 0.000000 0.000000
PIGLIT: {'result': 'fail' }



Reproduce steps:
----------------------------
1. start X
2. start gnome-session
3. ./bin/fbo-sys-sub-blit -auto
Comment 1 lu hua 2012-03-15 22:30:55 UTC 
It does not happen on Pineview.
Comment 2 Chris Wilson 2012-03-16 13:20:38 UTC 
Created attachment 58578 [details] [review]
Only invalidate if the WindowPixmap changes

But mesa can also squash this invalidation itself, the logic appears to be all there to spot the texture reuse.
Comment 3 Gordon Jin 2012-03-31 18:33:36 UTC 
Hua, can you try the patch? And please retest with bug#44001 together.
Comment 4 Chris Wilson 2012-07-05 03:09:04 UTC 
Created attachment 63854 [details] [review]
Flush writes to FakeFront on creation

Fails consistently now, without a compositor.
Comment 5 Chris Wilson 2012-07-05 04:40:53 UTC 
*** Bug 47129 has been marked as a duplicate of this bug. ***
Comment 6 Gordon Jin 2012-10-08 03:47:47 UTC 
Chris, do you need QA to test your patch?
Comment 7 Kenneth Graunke 2014-08-07 21:52:48 UTC 
Seems to be working okay these days.  Feel free to reopen if it still fails for you.
Comment 8 lu hua 2014-08-12 06:26:14 UTC 
Run 20 cycles, It works well. Close it.

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