[Webkit-unassigned] [Bug 221067] [WinCairo] Page scrolling by wheel events doesn't work in non-AC mode pages if async scrolling is enabled

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=221067

--- Comment #6 from Fujii Hironori <Hironori.Fujii at sony.com> ---
Comment on attachment 418609
  --> https://bugs.webkit.org/attachment.cgi?id=418609
WIP patch

View in context: https://bugs.webkit.org/attachment.cgi?id=418609&action=review

> Source/WebKit/WebProcess/WebPage/CoordinatedGraphics/DrawingAreaCoordinatedGraphics.cpp:256
> +    settings.setForceCompositingMode(store.getBoolValueForKey(WebPreferencesKey::acceleratedCompositingEnabledKey()));

This patch doesn't work well in the case of disabling AC in runtime by
using WKPreferencesSetAcceleratedCompositingEnabled(pref, false)
because the WebKit::WebPage already has a scrolling tree.

This problem can be reproduced with GTK MiniBrowser by switching
compositing policy from 'always' to 'never' in runtime.

-- 
You are receiving this mail because:
You are the assignee for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.webkit.org/pipermail/webkit-unassigned/attachments/20210203/7014a7fd/attachment-0001.htm>