On Dec 9, 2013, at 2:29 PM, Tingan Ho <[email protected]> wrote: >> >> Tingan, would it be acceptable for you to do the resampling in JavaScript? > > > First, writing it in Javascript is less performant. Since natively you can > have access to the GPU. Second, it is abstract a layer for JS developers, > since they don't need to care about bicubic resampling algoritmen. Third, > it kind of make sense if you set imageSmothingEnabled to true in the > context object, that all down-scaling should use bicubic resampling(I > haven't tried yet, but I think the scale use bicubic sampling). I think it > is is a miss in the specification that the method drawImage doesn't use > bicubic resampling. It is a method of the context objext on des > down-scaling.
GPUs don’t do bicubic resampling natively. You may also find that javascript can give enough performance to be usable: http://people.mozilla.org/~jmuizelaar/image-scaling/scale.html -Jeff
