- From: Tab Atkins Jr. <jackalmage@gmail.com>
- Date: Tue, 10 May 2011 17:05:49 -0700
- To: Rik Cabanier <cabanier@gmail.com>
- Cc: Dean Jackson <dino@apple.com>, Chris Lilley <chris@w3.org>, Erik Dahlstrom <ed@opera.com>, public-fx@w3.org, www-svg <www-svg@w3.org>
On Tue, May 10, 2011 at 4:50 PM, Rik Cabanier <cabanier@gmail.com> wrote: > On Mon, May 9, 2011 at 2:29 PM, Tab Atkins Jr. <jackalmage@gmail.com> wrote: >> On Mon, May 9, 2011 at 10:48 AM, Rik Cabanier <cabanier@gmail.com> wrote: >> > On Fri, May 6, 2011 at 5:54 PM, Dean Jackson <dino@apple.com> wrote: >> >> I think all existing markup filters should remain and be available to >> >> all >> >> content via the filter property. >> > >> > There was a discussion between you and Tab Atkins about this under the >> > title >> > 'generators in filters'. >> > I thought the consensus was to move these to the image values module. >> > Are >> > you suggesting instead that they are available in images values and >> > filters? >> >> Yes, all existing filters should remain, as SVG filters. In the CSS >> syntax, they're accessible simply by the url() function. >> >> However, the filters that are just image servers, like feTurbulence, >> won't get a facelift as CSS functions in the Filters spec; instead, >> they'll be part of the Image Values spec, which is the correct place >> to define new image servers in CSS. (Their current existence as SVG >> Filters appears to be a historical accident, possibly as a result of >> SVG not quite unifying its notion of what an image server is.) > > Hi Tab, > the fact that these image producing filters can be pulled in through the > feComposite filter means that they're still needed in the new spec. > Maybe the same filter syntax can be in place in both specifications. Again, they'll stay as they are in the SVG syntax; we'll still have an <feTurbulence> element. However, we won't define a corresponding version in the CSS syntax in the Filters spec; instead, it'll be defined in Image Values, since it's actually an image generator, not a filter. This is similar to how <feImage> will remain in the SVG syntax to pull images into the filter pipeline, but the corresponding concept in the CSS syntax is just the url() function. ~TJ
Received on Wednesday, 11 May 2011 00:06:38 UTC