Bug 46401 - Investigate using an intermediate UI process window for windowed plugins to speed up scrolling
Summary: Investigate using an intermediate UI process window for windowed plugins to s...
Status: RESOLVED WONTFIX
Alias: None
Product: WebKit
Classification: Unclassified
Component: Plug-ins (show other bugs)
Version: 528+ (Nightly build)
Hardware: PC Windows XP
: P2 Normal
Assignee: Nobody
URL:
Keywords: InRadar
Depends on: 60210
Blocks:
  Show dependency tree / graph
 
Reported: 2010-09-23 13:23 PDT by Adam Roben (:aroben)
Modified: 2022-07-01 11:36 PDT (History)
1 user (show)

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Description Adam Roben (:aroben) 2010-09-23 13:23:37 PDT 
2010-09-23 15:43:16 Adam Roben:
Chrome wraps all windowed plugins in an intermediate window created by the UI process. This supposedly speeds up scrolling as it keeps Windows from sending synchronous cross-process messages during scrolling.

We should see if we can use this technique, too, in WebKit2.

<rdar://problem/8470647>
Comment 1 Adam Roben (:aroben) 2010-10-25 14:31:26 PDT 
Relevant code in Chromium:

WebPluginDelegateImpl::WIndowedReposition
RenderView::DidMovePlugin
RenderWidget::SchedulePluginMove
RenderWidget::DoDeferredUpdate
RenderWidgetHost::OnMsgUpdateRect
RenderWidgetHost::MovePluginWindows
Comment 2 Adam Roben (:aroben) 2011-05-04 11:15:58 PDT 
Attachment 20913 [details] makes a good testcase.
Comment 3 Adam Roben (:aroben) 2011-05-04 11:24:50 PDT 
Another testcase: http://www.youtube.com/watch?v=CKJgcEgvx4U&feature=topvideos_entertainment
Comment 4 Alexey Proskuryakov 2022-07-01 11:36:12 PDT 
Mass closing plug-in bugs, as plug-in support has been removed from WebKit.

Please comment and/or reopen if this still affects WebKit in some way.