srcset-polyfill Should update to match the new spec

It looks like this polyfill implements the old spec for srcset, where 'w' descriptors meant viewport max-width. The current spec makes 'w' descriptors mean width of the image, to be used together with the sizes attribute. The functionality for the old 'w' is available by using the picture element.

Aug 11 '14 04:08 zcorpan

@zcorpan - Unless I'm mistaken, the polyfill seems correct. According to the latest working spec (Nov 13 2014):

To specify an image, give first a URL, then one or more descriptors of the form 100w or 2x, where "100w" means "maximum viewport width of 100 CSS pixels" and "2x" means "maximum pixel density of 2 device pixels per CSS pixel".

Dec 01 '14 20:12 booleanbetrayal

https://github.com/weblinc/img-srcset/issues/4#issuecomment-65200466

Dec 02 '14 09:12 zcorpan

zcorpan is right. https://github.com/ResponsiveImagesCG/picture-element/issues/253 Problem: Opera and Chrome blows up images to 100% of viewport; even if the source-image is smaller in size.

Jan 21 '15 08:01 fischhase

:+1:

Aug 17 '15 06:08 abernier