[whatwg] Grouping in canvas 2d

Ian Hickson ian at hixie.ch
Fri Mar 14 11:09:58 PDT 2014

On Wed, 4 Dec 2013, Jürg Lehni wrote:
> Implementing [layering/grouping] would help us greatly to optimize 
> aspects of Paper.js, as double buffering into separate canvases is very 
> slow and costly.

Can you elaborate on what precisely the performance bottleneck is? I was 
looking through this thread but I can't find a description of the use 
cases it addresses, so it's hard to evaluate the proposals.

Ian Hickson               U+1047E                )\._.,--....,'``.    fL
http://ln.hixie.ch/       U+263A                /,   _.. \   _\  ;`._ ,.
Things that are impossible just take longer.   `._.-(,_..'--(,_..'`-.;.'

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