On Wed, Apr 11, 2012 at 4:05 PM, Rik Cabanier <[email protected]> wrote:
> All, > > I'm working on a spec to add blending and compositing through simple CSS > keywords. It is trying to define a generic model that is not specific to > Canvas, HTML or SVG and then lists how the model could be implemented. > We've gotten some comments that this feature would be useful in Canvas as > well so I was wondering if it made sense to add it to the canvas API. > > I can see 2 ways of adding this: > 1. extend the list of compositing operators ( > > http://www.whatwg.org/specs/web-apps/current-work/multipage/the-canvas-element.html#compositing > ) > with blending. This is what is currently in the draft spec ( > https://dvcs.w3.org/hg/FXTF/rawfile/tip/compositing/index.html chapter 7) > > 2. create a new attribute on the context called 'globalBlendOperation' that > takes the same list of blend operations as css ( > https://dvcs.w3.org/hg/FXTF/rawfile/tip/compositing/index.html#blend-mode) > > Any thoughts? > This seems much more useful than the existing composite operations :)
