On Tue, Sep 24, 2013 at 10:29 PM, Dirk Schulze <dschulze@adobe.com> wrote: > > On Sep 25, 2013, at 7:20 AM, Rik Cabanier <cabanier@gmail.com> wrote: > > > > > > > > > On Tue, Sep 24, 2013 at 10:15 PM, Dirk Schulze <dschulze@adobe.com> > wrote: > > > > On Sep 25, 2013, at 12:43 AM, Rik Cabanier <cabanier@gmail.com> wrote: > > > > > On Tue, Sep 24, 2013 at 3:25 PM, Tab Atkins Jr. <jackalmage@gmail.com> > wrote: > > > On Tue, Sep 24, 2013 at 3:14 PM, Rik Cabanier <cabanier@gmail.com> > wrote: > > > > On Tue, Sep 24, 2013 at 2:58 PM, Tab Atkins Jr. < > jackalmage@gmail.com> > > > > wrote: > > > >> On Tue, Sep 24, 2013 at 2:31 PM, Rik Cabanier <cabanier@gmail.com> > wrote: > > > >> > The compositing/blending spec doesn't talk about converting > colors [1] > > > >> > All > > > >> > the formulas (except for 4 special ones) work on individual color > > > >> > channels, > > > >> > regardless of what they represent. > > > >> > > > >> Those channels appear to be assumed to be RGB. > > > > > > > > Can you point out where that is so I can update the spec? > > > > > > Hmm, I guess it actually doesn't. The few examples that give explicit > > > color numbers are all written with RGB, but there's nothing outside > > > the examples that actually talks about the color value. > > > > > > Great. I made a not to add CMYK (and spot?) examples for the next > version. > > > > We already have CMYK so the note would make sense in this level already, > wouldn't it? > > > > Is there any support for CMYK as an output color space? > > > > Even though WebKit does not preserve CMYK (and transforms it into RGB) > for CSS, it has proper CMYK handling in Canvas (in Safari). And CSS > Compositing addresses Canvas as well. > > > > Really? Canvas is always RGBA; how would you create a CMYK canvas? > > You can specify CMYK colors for drawing and WebKit/Safari does exactly > that. It draws with the specified CMYK colors. > Sure, but you won't draw CMYK pixels. The color is somehow converted to RGB and then the operation draws with the converted color.Received on Wednesday, 25 September 2013 05:50:46 UTC
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