Bug 197766 - When the scroller hosting a shared layer becomes non-scrollable, content disappears
Summary: When the scroller hosting a shared layer becomes non-scrollable, content disa...
Status: RESOLVED FIXED
Alias: None
Product: WebKit
Classification: Unclassified
Component: Compositing (show other bugs)
Version: WebKit Nightly Build
Hardware: Unspecified Unspecified
: P2 Normal
Assignee: Simon Fraser (smfr)
URL:
Keywords: InRadar
Depends on:
Blocks: 197561
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Reported: 2019-05-09 21:42 PDT by Simon Fraser (smfr)
Modified: 2019-05-11 13:58 PDT (History)
4 users (show)

See Also:

Attachments
Testcase (1.33 KB, text/html)
2019-05-09 21:42 PDT, Simon Fraser (smfr) 		no flags Details
Patch (5.70 KB, patch)
2019-05-11 11:55 PDT, Simon Fraser (smfr) 		no flags Details | Formatted Diff | Diff
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Description Simon Fraser (smfr) 2019-05-09 21:42:57 PDT 
Created attachment 369542 [details]
Testcase

Attached testcase shows a bug where when a scroller becomes non-scrollable, we change the layer configuration in a way that ends up leaving content unpainted.
Comment 1 Radar WebKit Bug Importer 2019-05-11 11:54:27 PDT 
<rdar://problem/50695808>
Comment 2 Simon Fraser (smfr) 2019-05-11 11:55:19 PDT 
Created attachment 369657 [details]
Patch
Comment 3 zalan 2019-05-11 11:59:45 PDT 
Comment on attachment 369657 [details]
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=369657&action=review

> Source/WebCore/ChangeLog:10
> +        its backing store. We always made backing for overlap layers, so even  if the sharing layers

even if (extra whitespace)
Comment 4 WebKit Commit Bot 2019-05-11 13:58:57 PDT 
Comment on attachment 369657 [details]
Patch

Clearing flags on attachment: 369657

Committed r245206: <https://trac.webkit.org/changeset/245206>
Comment 5 WebKit Commit Bot 2019-05-11 13:58:59 PDT 
All reviewed patches have been landed.  Closing bug.