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Issue 608150 link

Starred by 1 user
Status: Archived
Owner: ----
Closed: May 2017
Cc:
█ ranjitkan@chromium.org
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 3
Type: Bug



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Weird diagonal artifacts when drawing canvas curves

Reported by ricciad...@gmail.com, Apr 30 2016 
Chrome Version       : 50.0.2661.86 (Official Build) (64-bit)
Other browsers tested:
  Add OK or FAIL, along with the version, after other browsers where you
have tested this issue:
     Safari: OK
    Firefox: OK
         IE: OK

What steps will reproduce the problem?
(1) Load attached CurveIssue.html file
(2) Visually observe drawn rounded rects

What is the expected result?
Rounded rects appear without artifacts in corners.

What happens instead?
Rounded rects have weird diagonal artifacts in the corner.  See red circled region in Zoomed.png.

Does *NOT* occur if I turn off Accelerated 2d Canvas in chrome://flags
CurveIssue.html
4.7 KB View Download
Screen Shot 2016-04-30 at 1.55.07 AM.png
347 KB View Download
Zoomed.png
38.5 KB View Download
gpu.html
44.9 KB View Download

Comment 1 by ranjitkan@chromium.org, May 2 2016

Cc: ranjitkan@chromium.org
Labels: Needs-Feedback
Unable to reproduce the issue on MAC 10.11.4 for chrome stable version 50.0.2661.94. Attached is a zoomed image for the same.

@ ricciadams: Request you to please try a system restart, update chrome to the latest stable available and try again. Please update us with your observations.

Thanks.!
Corner.png
27.4 KB View Download

Comment 2 by ricciad...@gmail.com, May 2 2016 

Restarted my iMac and updated to Chrome stable 50.0.2661.94.  The issue still occurs.

I also tested with my 2013 Retina MacBook Pro and 2012 Retina MacBook Pro: on both the issue does *not* occur.

Let me know if you need any additional info!

Comment 3 by ricciad...@gmail.com, May 2 2016 

On the iMac, the artifacts appear at the same location when I reload the page.  However, if I resize the page (which redraws everything), the artifacts will move around to different round rects.

Comment 4 by ranjitkan@chromium.org, May 3 2016

Labels: -Needs-Feedback TE-NeedsHardwareDependency

Comment 5 by ranjitkan@chromium.org, May 6 2016

Labels: -TE-NeedsHardwareDependency TE-Hardware-Dependency
Project Member

Comment 6 by sheriffbot@chromium.org, May 8 2017

Status: Archived (was: Unconfirmed)
Issue has not been modified or commented on in the last 365 days, please re-open or file a new bug if this is still an issue.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot
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