[Webkit-unassigned] [Bug 76886] [WK2][Qt] REGRESSION: Pages with transform animations sometimes omit some of the layers since r105413

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=76886





--- Comment #6 from Noam Rosenthal <noam.rosenthal at nokia.com>  2012-01-25 14:42:46 PST ---
> > Source/WebKit2/WebProcess/WebCoreSupport/WebGraphicsLayer.cpp:553
> > +    if (selfOrAncestorHasActiveTransformAnimations())
> > +        return tiledBackingStoreContentsRect();
> 
> Did you do some measurements of this? regarding to the comment in the changelog
No... if I had a viable alternative I'd measure it vs. this solution :) Problem is that if I'd calculate the visible rect based on all the transform keyframes, I could still reach a point where a huge layer is entirely visible. What we should probably do in that case is not have content-scale for huge transformed layers, but that should come later as it's tricky.

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