> Wouldn't it be better to implement better searching and paint-segmentation in > RenderLayers then? It could also provide the same speed up for many other big > cases.
That would be worth investigating more for sure (do you mind filing a bug about it?). The paint search and segmentation algorithm is very close between RenderLayer and most RenderObjects - tables being an exception here as their structure enables better searching algorithms - which means that it would benefit everyone. I haven't spend enough time looking at generic scalability issues to say if there won't be others more important bottlenecks. I still see some upsides in attacking the reduced use case of overflow clips independently of what you are proposing: * RenderLayer has become a class handling far too many tasks so moving some functionality out of it is good by itself. * RenderObject has a better knowledge of its own structure, something as generic as RenderLayer would not need to be aware of. Thanks, Julien _______________________________________________ webkit-dev mailing list [email protected] http://lists.webkit.org/mailman/listinfo.cgi/webkit-dev
