Re: [css-compositing] "add" and "subtract" blend modes from Tab Atkins Jr. on 2012-08-23 (www-style@w3.org from August 2012)

From: Tab Atkins Jr. <jackalmage@gmail.com>
Date: Thu, 23 Aug 2012 11:03:26 -0700
To: Rik Cabanier <cabanier@gmail.com>
Cc: Shawn Allen <shawn@stamen.com>, www-style@w3.org
Message-ID: <CAAWBYDD=c=JBZ23=sa_HL-J+s_5d1VKOA9bRb1zP+YVbfd7EpQ@mail.gmail.com>

On Thu, Aug 23, 2012 at 10:55 AM, Rik Cabanier <cabanier@gmail.com> wrote:
> thanks for your feedback!
> Do you feel strongly that these blend modes should be in the first
> specification, or do you think they could wait until the next version?
> Looking at the open source browsers, there is no support under the hood for
> these Photoshop specific blend modes which might slow down implementation.

I may be off-base, but the cross-fade() function in Images 4
<http://dev.w3.org/csswg/css4-images/#cross-fade-function> uses the
'add' PD operator.  Is that the same as the linear-dodge blend mode?
If so, then we have an implementation of it in WebKit.

~TJ

Received on Thursday, 23 August 2012 18:04:19 UTC