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box-shadow inset does not work for all offsets
Reported by
bry...@gmail.com,
Jul 5 2017
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Issue descriptionUserAgent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.12; rv:54.0) Gecko/20100101 Firefox/54.0 Steps to reproduce the problem: 1. Visit the Pen: https://codepen.io/bryeva/pen/qjKMRV in Chrome 59 or 60(Dev) 2. Hover over the text 3. Move the cursor outside of the rectangle 4. Repeat What is the expected behavior? The animation should be fluid / smooth. What went wrong? The animation flickers at random intervals when viewing with Chrome 59 or 60(Dev) on Mac/PC. Did this work before? Yes 58 Does this work in other browsers? Yes Chrome version: Version 59.0.3071.115 (Official Build) (64-bit) Channel: n/a OS Version: OS X 10.12.3 Flash Version: Shockwave Flash 26.0 r0 There is a similar bug - number 713674 - https://bugs.chromium.org/p/chromium/issues/detail?id=713674# This dealt with mismatched list lengths in shadow interpolation for box-shadow transitions. I suspect this may be similar as when the 'inset' box-shadow attribute is added, it behaves in a similar flickering way. Box-shadow transitions without the 'inset' attribute work fine.
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Jul 6 2017
Recreated the bug using JS instead of animations: https://codepen.io/anon/pen/owMLJB?editors=0110 This is most likely a painting issue.
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Jul 7 2017
I'll bisect.
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Jul 10 2017
Able to reproduce this issue on Windows 10, Ubuntu 14.04 and Mac 10.12.5 with chrome Stable #59.0.3071.115, Beta #60.0.3112.50, Dev #61.0.3141.7 , Canary #61.0.3152.0 Bisect Info: =========== Good build : 59.0.3069.0, Revision Range - 463921 Bad build : 59.0.3071.0, Revision Range - 464641 After executing the per-revision bisect script , i got the following CL's between good and bad build versions =========================================== https://chromium.googlesource.com/chromium/src/+log/24ce4cde5a1d9f21ff63d0560f904dbd2dc46d81..58a80400fbbbddc28a9fb82ca69605e7f520a589 The above CL is redirected to Skia third party roll: https://skia.googlesource.com/skia.git/+log/ac796f880f0a..4ccd862d2940 schenney@- Could you please look into above CL's and assign it to the appropriate dev person for further triage. Thank You...
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Jul 10 2017
No doubt related to all the changes to local shader matrix.
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Jul 11 2017
Code author is no longer on our team, over to Mike for ideas on what may be going wrong here. |
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Comment 1 by bry...@gmail.com
, Jul 5 2017