* [Bug 110251] Buffer age seems incorrect
@ 2019-03-26 22:37 bugzilla-daemon
2019-03-26 22:37 ` [Bug 110251] Buffer age seems to be incorrect bugzilla-daemon
` (2 more replies)
0 siblings, 3 replies; 4+ messages in thread
From: bugzilla-daemon @ 2019-03-26 22:37 UTC (permalink / raw)
To: dri-devel
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https://bugs.freedesktop.org/show_bug.cgi?id=110251
Bug ID: 110251
Summary: Buffer age seems incorrect
Product: Mesa
Version: 19.0
Hardware: Other
OS: All
Status: NEW
Severity: normal
Priority: medium
Component: Drivers/Gallium/radeonsi
Assignee: dri-devel@lists.freedesktop.org
Reporter: yshuiv7@gmail.com
QA Contact: dri-devel@lists.freedesktop.org
Created attachment 143784
--> https://bugs.freedesktop.org/attachment.cgi?id=143784&action=edit
Demo of the problem
* Background
compton has the ability to do partial screen update. It will gather the damaged
regions from Xorg, query the buffer age using GLX, and then only update the
part of the screen that is damaged.
* Problem
When partial screen update is enabled, sometimes closed window is left on the
screen.
Please see the attachment.
In the clip, at first, I was repeatedly opening/closing Rofi, trying to
triggered bug (it does not reproduce consistently). After several attempts,
Rofi window is left on the screen after I closed it. Then, I moved my mouse
around to trigger updates of the window underneath.
However, if I capture a trace of this happening with apitrace, this problem
doesn't happen during the replay of the trace.
* Thoughts
Could it be mesa is returning the wrong buffer age of the back buffer?
* To reproduce
Build compton from the repo. Run it with `compton --config /dev/null
--use-damage --experimental-backends --backend glx`. Then try open/close window
several times.
* System info
Card: Radeon RX590
DDX: xf86-video-amdgpu
Mesa version: 19.0.0
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* [Bug 110251] Buffer age seems to be incorrect
2019-03-26 22:37 [Bug 110251] Buffer age seems incorrect bugzilla-daemon
@ 2019-03-26 22:37 ` bugzilla-daemon
2019-03-26 22:38 ` bugzilla-daemon
2019-03-27 14:46 ` bugzilla-daemon
2 siblings, 0 replies; 4+ messages in thread
From: bugzilla-daemon @ 2019-03-26 22:37 UTC (permalink / raw)
To: dri-devel
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https://bugs.freedesktop.org/show_bug.cgi?id=110251
Yuxuan Shui <yshuiv7@gmail.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|Buffer age seems incorrect |Buffer age seems to be
| |incorrect
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* [Bug 110251] Buffer age seems to be incorrect
2019-03-26 22:37 [Bug 110251] Buffer age seems incorrect bugzilla-daemon
2019-03-26 22:37 ` [Bug 110251] Buffer age seems to be incorrect bugzilla-daemon
@ 2019-03-26 22:38 ` bugzilla-daemon
2019-03-27 14:46 ` bugzilla-daemon
2 siblings, 0 replies; 4+ messages in thread
From: bugzilla-daemon @ 2019-03-26 22:38 UTC (permalink / raw)
To: dri-devel
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https://bugs.freedesktop.org/show_bug.cgi?id=110251
Yuxuan Shui <yshuiv7@gmail.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Hardware|Other |x86-64 (AMD64)
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^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug 110251] Buffer age seems to be incorrect
2019-03-26 22:37 [Bug 110251] Buffer age seems incorrect bugzilla-daemon
2019-03-26 22:37 ` [Bug 110251] Buffer age seems to be incorrect bugzilla-daemon
2019-03-26 22:38 ` bugzilla-daemon
@ 2019-03-27 14:46 ` bugzilla-daemon
2 siblings, 0 replies; 4+ messages in thread
From: bugzilla-daemon @ 2019-03-27 14:46 UTC (permalink / raw)
To: dri-devel
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https://bugs.freedesktop.org/show_bug.cgi?id=110251
Yuxuan Shui <yshuiv7@gmail.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |NOTOURBUG
--- Comment #1 from Yuxuan Shui <yshuiv7@gmail.com> ---
After more investigation, this might have been a bug in compton.
Closing for now.
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