Bug 119225

Summary: [wk2] Flush the WebProcess’ implicit transaction when using endDeferringViewInWindowChangesSync
Product: WebKit Reporter: Tim Horton <thorton>
Component: WebKit2Assignee: Tim Horton <thorton>
Status: RESOLVED FIXED    
Severity: Normal CC: andersca, simon.fraser
Priority: P2 Keywords: InRadar
Version: 528+ (Nightly build)   
Hardware: Unspecified   
OS: Unspecified   
Attachments:
Description Flags
patch
none
patch simon.fraser: review+

Tim Horton
Reported 2013-07-29 15:02:20 PDT
If an off-screen WKView is brought on screen bounded by endDeferringViewInWindowChangesSync, we expect the view to be fully ready (unless we hit the 250 ms watchdog and give up) to display when endDeferringViewInWindowChangesSync returns. However, the WebProcess’ implicit transaction can still be pending, meaning that the tiles/root compositing layer can be not-yet-parented. To avoid this flash, we can [CATransaction flush] whenever endDeferringViewInWindowChangesSync tells the WebProcess that its view-in-window state changed. <rdar://problem/14568841>
Attachments
patch (9.24 KB, patch)
2013-07-29 15:26 PDT, Tim Horton 		no flags
DetailsFormatted DiffDiff
patch (9.28 KB, patch)
2013-07-29 15:44 PDT, Tim Horton 		simon.fraser: review+
DetailsFormatted DiffDiff
Show Obsolete (1) View All Add attachment proposed patch, testcase, etc.
Tim Horton
Comment 1 2013-07-29 15:26:55 PDT
Created attachment 207672 [details] patch
Tim Horton
Comment 2 2013-07-29 15:44:40 PDT
Created attachment 207675 [details] patch
Tim Horton
Comment 3 2013-07-29 21:44:11 PDT
Thanks! http://trac.webkit.org/changeset/153458
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