[whatwg] Canvas element image scaling

As others have pointed out, canvas scaling algorithm is not specified and is
different in each browser.

http://greggman.com/downloads/examples/canvas-test/test-01/canvas-test-01-results.html

http://greggman.com/downloads/examples/canvas-test/test-01/canvas-test-01.html


On Sat, Sep 18, 2010 at 7:51 PM, Rob Evans <rob at mtn-i.com> wrote:

> Thanks I'll give that a go in the morning!
>
> All the best,
>
> Rob
>
> On 19 Sep 2010 03:42, "Boris Zbarsky" <bzbarsky at mit.edu> wrote:
>
> On 9/18/10 9:57 PM, Rob Evans wrote:
> >
> > Thanks for the reply. I?m already using high resolution ima...
>
> Gecko will scale canvas images in one of two ways: either using a
> nearest-neighbor algorithm or using a more complicated (bilinear, bicubic,
> may depend on other details) algorithm which is slower but usually gives
> better results.  You can control which is happening by setting
> mozImageSmoothingEnabled on the canvas 2d context (set to false to get
> nearest-neighbor and set to true to get the other).
>
> The default value there is true.  Does setting it to false give you the
> Chrome 6 behavior, perchance?  I'd be a little surprised if it does, but
> worth trying.
>
> -Boris
>
>
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Received on Friday, 24 September 2010 18:40:40 UTC