Bug 193893

Summary: Scrolling with background-attachment: fixed needs to trigger repaints
Product: WebKit Reporter: Simon Fraser (smfr) <simon.fraser>
Component: ScrollingAssignee: Simon Fraser (smfr) <simon.fraser>
Status: RESOLVED FIXED    
Severity: Normal CC: cmarcelo, dino, esprehn+autocc, ews-watchlist, fred.wang, glenn, jamesr, koivisto, kondapallykalyan, luiz, pdr, simon.fraser, tonikitoo, webkit-bug-importer
Priority: P2 Keywords: InRadar
Version: WebKit Nightly Build   
Hardware: Unspecified   
OS: Unspecified   
Attachments:
Description Flags
Patch
dino: review+
Patch none

Description Simon Fraser (smfr) 2019-01-27 21:06:10 PST 
Need to make background-attachment: fixed in accelerated overflow:scroll either work, or kick us out of async scrolling.
Comment 1 Radar WebKit Bug Importer 2019-01-27 21:06:38 PST 
<rdar://problem/47587017>
Comment 2 Simon Fraser (smfr) 2020-04-20 12:21:22 PDT 
*** Bug 210758 has been marked as a duplicate of this bug. ***
Comment 3 Simon Fraser (smfr) 2020-04-20 12:23:21 PDT 
Created attachment 397000 [details]
Patch
Comment 4 Dean Jackson 2020-04-20 12:27:22 PDT 
Comment on attachment 397000 [details]
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=397000&action=review

> LayoutTests/scrollingcoordinator/mac/fixed-backgrounds/fixed-background-in-overflow-repaint.html:27
> +            let scroller = document.querySelector('.scroller');

Antoine would nit const you here. But to that I say: https://www.instagram.com/tv/B_FoCbNHR71/
Comment 5 Simon Fraser (smfr) 2020-04-20 13:04:51 PDT 
Created attachment 397007 [details]
Patch
Comment 6 EWS 2020-04-20 14:55:42 PDT 
Committed r260403: <https://trac.webkit.org/changeset/260403>

All reviewed patches have been landed. Closing bug and clearing flags on attachment 397007 [details].