[whatwg] Web Workers feedback
ian at hixie.ch
Wed Mar 31 11:59:46 PDT 2010
On Wed, 31 Mar 2010, Anne van Kesteren wrote:
> On Tue, 30 Mar 2010 15:09:49 -0700, Ian Hickson <ian at hixie.ch> wrote:
> > On Tue, 30 Mar 2010, Jonas Sicking wrote:
> > > Personally my guess it's more likely that they really wanted to.
> > I have no idea which is more likely. The only use case I'm aware of is
> > passing an <img> in, and for that there isn't really a fallback position,
> > so it doesn't matter if we send null or throw an exception.
> Isn't the fallback there to draw the <img> on a <canvas> and then extract an
> ImageData object and pass that through to the worker?
For the use cases that were mentioned -- rotating or resizing an image --
it's actually slower to do it that way than just to do it on the main
thread. (I expect for that use case we'll just add a dedicated API for
async batch resizing and rotating of images.)
Ian Hickson U+1047E )\._.,--....,'``. fL
http://ln.hixie.ch/ U+263A /, _.. \ _\ ;`._ ,.
Things that are impossible just take longer. `._.-(,_..'--(,_..'`-.;.'
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