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Issue 620717 link

Starred by 1 user
Status: Assigned
Owner:
fmalita@chromium.org
Cc:
vmp...@chromium.org
Components:
EstimatedDays: ----
NextAction: ----
OS: Mac
Pri: 3
Type: Bug



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box-shadow glitch with large blur-radius

Reported by joliss42@gmail.com, Jun 16 2016 
URL: http://codepen.io/joliss/pen/ezzMyg

Chrome 51.0.2704.84 on Mac: FAIL
Chrome 53.0.2769.0 canary on Mac: OK
Chrome 51.0.2704.84 m on Windows: FAIL
Chrome 53.0.2768.0 canary on Windows: FAIL
Firefox, Safari, Edge (Windows, Mac): OK

The test case at http://codepen.io/joliss/pen/ezzMyg demonstrates a problem with box-shadow rendering: An inset box-shadow is rendered over an area 100px wide, but the blur is set to 300px. This causes a rendering glitch.

I'm attaching a screenshot and a screen recording.
Chrome 51 Mac screenshot.png
24.4 KB View Download
Chrome 51 Mac recording.mp4
1.2 MB View Download

Comment 1 by rohitrao@chromium.org, Jun 16 2016

Components: Blink>CSS
Status: Untriaged (was: Unconfirmed)

Comment 2 by timloh@chromium.org, Jun 17 2016

Components: -Blink>CSS Blink>Paint
Repros for me on M51/M53 on Mac.

Comment 3 by chrishtr@chromium.org, Jun 17 2016

Components: Internals>Skia
Owner: fmalita@chromium.org
Status: Assigned (was: Untriaged)
The glitch happens at tile boundaries. This might be a Skia bug. Florin could you
 take a look?
►

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