[whatwg] Bicubic filtering on context.drawImage

[Tab Atkins Jr.]

On Tue, Dec 10, 2013 at 2:06 AM, Glenn Maynard <glenn at zewt.org> wrote:
> On Mon, Dec 9, 2013 at 1:21 AM, Tab Atkins Jr. <jackalmage at gmail.com> wrote:
>> Hm, I wonder if image-interpolation on the <canvas> should affect
>> this?  It's defined to only have an effect when you scale the <canvas>
>> element itself, but I think it probably makes sense that whatever
>> scaling intent you specify for the element should probably apply to
>> images you draw into it with a scale.
>
> What is "image-interpolation"?  It looks like a CSS property, but Google
> doesn't distinguish between "image-interpolation" and "image interpolation",
> so it's impossible to search for.

Sorry about that, it's actually called 'image-rendering'
<http://dev.w3.org/csswg/css-images/#the-image-rendering>.

> If it is, having CSS state affect drawing of 2d canvas seems wrong.  Aside
> from the bad layering, it would lead to different rendering if you draw to a
> Canvas before stylesheets finish loading (equivalent to not waiting for
> images, but much easier to get wrong without noticing), and if you offscreen
> render a Canvas before actually putting it in a document.

Valid point. I withdraw my suggestion.

~TJ