[Webkit-unassigned] [Bug 193665] [iOS] Tiles not created in large scrollable iframes
bugzilla-daemon at webkit.org
bugzilla-daemon at webkit.org
Wed Jan 30 11:44:26 PST 2019
https://bugs.webkit.org/show_bug.cgi?id=193665
--- Comment #12 from Antti Koivisto <koivisto at iki.fi> ---
> Do we understand the history here, and why your removal doesn't break
> something?
Nothing is really removed here scrollContainerLayer just also serves as insetClipLayer. All the logic around that is unchanged.
> The "that moves" is confusing. How does this layer move its content? The
> moving is done by setting bounds origin or position on m_scrollLayer, right?
> This layer doesn't control that.
Yeah, bad comment.
> > Source/WebCore/rendering/RenderLayerCompositor.h:566
> > + // Layer that moves during scrolling.
> > RefPtr<GraphicsLayer> m_scrollLayer;
>
> Can we call this scrolledContentsLayer? That would be more consistent with
> RenderLayerBacking names.
There is existing scrolledContentsLayer in scrolling tree though, which does not map to this layer.
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