[Webkit-unassigned] [Bug 39119] New: WebKit continues to render accelerated compositing pages in background tabs, but shouldn't
bugzilla-daemon at webkit.org
bugzilla-daemon at webkit.org
Fri May 14 08:37:37 PDT 2010
https://bugs.webkit.org/show_bug.cgi?id=39119
Summary: WebKit continues to render accelerated compositing
pages in background tabs, but shouldn't
Product: WebKit
Version: 528+ (Nightly build)
Platform: PC
URL: http://webkit.org/blog-files/3d-transforms/poster-circ
le.html
OS/Version: Windows XP
Status: NEW
Keywords: NeedsRadar, PlatformOnly
Severity: Normal
Priority: P2
Component: Layout and Rendering
AssignedTo: webkit-unassigned at lists.webkit.org
ReportedBy: aroben at apple.com
CC: simon.fraser at apple.com, cmarrin at apple.com,
enrica at apple.com
To reproduce:
1. Open <http://webkit.org/blog-files/3d-transforms/poster-circle.html>
2. In another tab, open <http://webkit.org/>
3. Make sure the webkit.org tab is selected
4. Watch Safari's CPU usage in Task Manager
Safari's CPU usage is non-0. This is because WebKit is continuing to render the animation in the poster-circle.html tab. If you turn off accelerated compositing, Safari's CPU usage drops to 0.
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