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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