[Webkit-unassigned] [Bug 44173] Scrolling is slow and stuttery on some long pages (due to accelerated compositing?)

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=44173


Adam Roben (aroben) <aroben at apple.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|Scrolling is slow and       |Scrolling is slow and
                   |stuttery on the NT          |stuttery on some long pages
                   |Debugging blog              |(due to accelerated
                   |                            |compositing?)




--- Comment #3 from Adam Roben (aroben) <aroben at apple.com>  2010-08-18 09:46:24 PST ---
Here's an even easier to reproduce case:

1. Go to http://trac.webkit.org/browser/trunk/WebKit/win/WebView.cpp?rev=58900#L946
2. Drag the scroll bar thumb

Scrolling is horribly slow. Tiles of the page visibly repaint as you go.

Turning off accelerated compositing brings performance back to acceptable levels.

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