Re: Alpha channel blending conformance requirement

Hello Nikos,

Tuesday, March 3, 2015, 5:57:49 AM, you wrote:

>  The Conformance chapter [1] currently states
>  "The viewer must support alpha channel blending of the image of
> the SVG content onto the target canvas."
>  I'm thinking this should be expanded to say something like:
>  "Areas of an image of SVG content may have opacity less than 100%.
> The viewer must at least support Simple Alpha Compositing of the
> image of the SVG content onto the target canvas, as described in the
> Compositing and Blending Specification [COMPOSITING-BLENDING]."
>  Simple Alpha Compositing is defined in Blending and Compositing Level 1 [2].
>  If they so choose, implementations can then go beyond this to support mix-blend-mode, etc.
>  What do others think?

That looks like a useful clarification and increases testability.

Best regards,
 Chris Lilley, Technical Director, W3C Interaction Domain

Received on Tuesday, 3 March 2015 19:48:13 UTC