Thanks for your insight. With that idea in mind, the code is much more understandable.
Thanks, Robin On Tue, Aug 18, 2009 at 2:48 PM, Maciej Stachowiak <m...@apple.com> wrote: > > On Aug 17, 2009, at 11:25 PM, Robin Cao wrote: > > Hi all, >> I'm interested in hacking on WebCore’s rendering system and i'm reading >> the source. >> What confused me is that what the role does RenderLayer play in the >> rendering process. >> What's the relation between RenderLayer and the rendering tree? >> >> > RenderLayer is a tree that, essentially forms a spare subtree of the full > render tree, which is used to optimize incremental relayout and repainting. > Opacity and explicit positioning are some of the things that can cause a > RenderLayer to be created. > > Regards, > Maciej > >
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