Mixed document invalidates *way* too much on canvas animation See attached document. Run it under quartz debug to see it invalidating the entire screen on each frame.
Created attachment 18382 [details] web archive of document
the web archive also seems to take up a larger page size than the original did. Meaning there is now a scroll bar. Odd.
gah, the webarchive does not appear to work for me :-/ That said, if this is one of the CAKE demos i believe the clear the entire canvas at the beginning of each frame in most of their demos -- thus ensuring we can't reduce the repaint region.
So I am tempted to close this as works correctly -- that's a blind recommendation though, i'd like an url that i could actually test :D
Probably was a cake demo. Probably tries to load external scripts via xhr