[webkit-dev] Adding blending mode to background images

[Dirk Schulze]

On Feb 2, 2013, at 8:01 AM, Benjamin Poulain <benjamin at webkit.org> wrote:

> On Fri, Feb 1, 2013 at 12:44 PM, Rik Cabanier <cabanier at gmail.com> wrote:
> background-image: url(a.png), url(b.png);
> -webkit-background-blend-mode: screen, screen;
> 
> Out of curiosity:
> 
> I am probably way too late for the party, but why not blend surface-to-surface? E.g.
>     background-image: blend(url(foo.png), url(bar.png), difference).
> 
> This is in order to easily stack them:
>     background-image: blend(blend(url(foo.png), url(bar.png), difference), url(giraffe.gif), screen).

I like the idea, but it has the big disadvantage that you can not repeat an image, change origin and size before blending with the next layer.

Greetings,
Dirk

> 
> Although, maybe we don't want that as it could get more difficult to optimize...
> 
> Benjamin
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