- From: Rik Cabanier <cabanier@gmail.com>
- Date: Wed, 12 Mar 2014 10:53:22 -0700
- To: Ian Hickson <ian@hixie.ch>
- Cc: "whatwg@whatwg.org" <whatwg@whatwg.org>
On Wed, Mar 12, 2014 at 10:49 AM, Ian Hickson <ian@hixie.ch> wrote: > On Wed, 12 Mar 2014, Rik Cabanier wrote: > > > > About a year ago, Google and mozilla proposed the "alpha" attribute as an > > option when you create the canvas context. The wiki explains the feature > > very well. [1] > > Since then, Google has implemented and shipped this [2][3]. There is a > > proposal to implement [4] and a patch [5] for firefox. > > > > An author can "feature test" by setting alpha to false and reading a > pixel > > in the context. If the pixel comes back with an alpha of 0, it means that > > it is not supported. > > > > Could this be added to the HTML specification? [6] > > It's being tracked here: > > https://www.w3.org/Bugs/Public/show_bug.cgi?id=23515 > > It's awaiting interest from a second vendor. It's not clear to me from the > Mozilla bug whether Mozilla engineers actually support this. > See roc's reply here: https://groups.google.com/a/chromium.org/forum/#!topic/blink-dev/4KMwyiaOxHg
Received on Wednesday, 12 March 2014 17:53:48 UTC