1238250 - Rendering artifacts when repainting SVG pie chart

Status: NEW

(Core :: Graphics, defect, P3)

Description

[Katelyn Gadd (:kael)]

Attachment: Video of artifacts

Causing the pie charts on this webpage (URL attached to bug) has a tendency to produce unusual rendering glitches beneath the chart. Among other things, the drop shadow is rendered incorrectly and random image garbage fills the background of its bounding box. The artifacts do not persist if you scroll the pie chart out of the viewport, then back in, and they typically go away the next time it repaints from a mouse event.

Attachment is a desktop recording of mousing over sections of the pie chart (it's 60fps, so some of the artifacts only show up for a couple frames).

Windows 10 Pro x64 with a GeForce 980Ti. Latest NVIDIA driver (361.43).

about:support follows:
------

Application Basics
------------------

Name: Firefox
Version: 45.0a2
Build ID: 20160107004004
Update Channel: aurora
User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:45.0) Gecko/20100101 Firefox/45.0
Multiprocess Windows: 0/2 (default: false)
Safe Mode: false

Crash Reports for the Last 3 Days
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End Date: 1446727625123
Homepage:
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Comment 1

[Mayank Bansal]

Attachment: memory-report.json.gz

I get a OOM if i keep on mouse-overing over the various slices of any pie-chart quickly. After the OOM, the tab gets black, and i have to manually close that tab (refresh doesnt work).

attaching the about:memory

Comment 2

[u279076]

First, please check if this happens in a new Firefox profile. This will help rule out your add-ons, preference changes, or other profile data as a potential factor.

Second, please check if this happens in Firefox Beta. If it doesn't then it's possibly a regression in Firefox 45 which we'll need you to narrow down using mozregression. You can get it from http://mozilla.github.io/mozregression/install.html.

Comment 3

[Alice0775 White]

(In reply to mayankleoboy1 from comment #1)
> Created attachment 8706008 [details]
> memory-report.json.gz
> 
> I get a OOM if i keep on mouse-overing over the various slices of any
> pie-chart quickly. After the OOM, the tab gets black, and i have to manually
> close that tab (refresh doesnt work).
> 
> attaching the about:memory

Seems different problem.
I have filed a bug 1238328

Comment 4

[u279076]

:kael, can you please check if this bug still reproduces now that bug 1238328 is fixed? Please test the latest Nightly version.

Comment 5

[Katelyn Gadd (:kael)]

(In reply to Anthony Hughes, QA Mentor (:ashughes) from comment #4)
> :kael, can you please check if this bug still reproduces now that bug
> 1238328 is fixed? Please test the latest Nightly version.

It doesn't reproduce in a fresh browser session, so I'm not sure I'll actually be able to tell you that it's gone. I'll see what I can do.

(I just reopened the URL in my 2-day-old Developer Edition session and the bug reproduced immediately, but then I restarted Firefox and now the bug doesn't repro. One of those issues...)

Comment 6

[u279076]

(In reply to K. Gadd (:kael) from comment #5)
> It doesn't reproduce in a fresh browser session, so I'm not sure I'll
> actually be able to tell you that it's gone. I'll see what I can do.

Okay thanks, please keep us posted. 

Note, bug 1238328 has only landed in Firefox Nightly 46 so please make sure you're testing the latest Nightly build.

Comment 7

[Katelyn Gadd (:kael)]

This seems to be fixed in nightly 2016-01-01. Left my regular profile running for a day or so. Thanks for the fix.

Comment 8

[u279076]

(In reply to K. Gadd (:kael) from comment #7)
> This seems to be fixed in nightly 2016-01-01.

Are you sure that date is correct? Bug 1238328 didn't land until January 12th in Nightly.

Comment 9

[Katelyn Gadd (:kael)]

Typo. I was running 2016-01-21.