ericdrowell/KineticJS — pull request #85 by davonium (2012-09-01 13:47:29+00:00)
Title: Added the drawBuffer-config to Animations. 

If set to false, only the scene will be drawn each frame.

This is to improve performance for animations note changing the buffer.
http://jsfiddle.net/davonium/VsbxT/embedded/result/
(Top map redraws both contexts, bottom only redraws scene)

More info in the forum thread:
http://www.kineticjs.com/forum/viewtopic.php?f=4&t=1150