[Webkit-unassigned] [Bug 45092] [chromium] Accelerated Compositing: screen garbage when scrolling

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=45092





--- Comment #13 from Vangelis Kokkevis <vangelis at chromium.org>  2010-09-07 17:21:22 PST ---
(In reply to comment #10)
> All good points. Uploading new patch...
> 
> With regard to placement of the root layer logic:
> Option 1) push it into LayerRendererChromium --- same functions would exist, but they wouldn't be polluting WebViewImpl
> Option 2) try to get root layers drawing as regular ContentLayerChromium's, then remove the root layer special case
> Option 3) land the changes as is in order to fix the scrolling bugs, then try for option 2
> 
> Any preferences?

Definitely Option #3.  I was just curious how close we are to moving this logic to the compositor. I think longer term we should do #2 but be smart about update rects (not do a blind union like composited layers do now) so that we don't end up redrawing more than we need to.

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