[CREATE] [OpenRaster spec] explicitly allow non-PNG layer data?

[Boudewijn Rempt]

On Sunday 27 July 2014 Jul 22:52:32 Andrew Chadwick wrote:
> Hi all --
> 
> I've been playing with SVG layers in MyPaint recently, and the results look
> fairly promising.
> https://github.com/mypaint/mypaint/issues/57
> https://github.com/achadwick/mypaint-experimental/commits/issue57-vector-layer-ui
> Perhaps this would be a good stopgap for text layers, for us anyway.
> 
> I noticed that the OpenRaster specification doesn't really say anything
> about what can go in a layer's data file inside the ORA container, just
> that it has to be referenced by a <layer src=""/> somewhere. The only
> examples given are .png files.
> 
> Is this enough? One of the important principles for OpenRaster is that
> stuff an app doesn't understand is preserved verbatim. That kind of
> pass-through preservation may cause clashes in the long run, but for layer
> data members it's pretty clear-cut: random SVGs, Oggs, videos, or Blender
> files may not have rendering support, or even any sort of pixel-sized 2-D
> rendering, but they should at least be passed through when saved.
> 
> SVG has enough library support these days that everything can probably try
> and make pixels out of it, and probably should. Not sure about the others :)
> 
> We should probably state this principle explicitly somewhere, at the very
> least.
 
I'm not against allowing svg layers in ora -- right now Krita uses ODG for its vector layers which isn't ideal. However, it won't be until 2015 and Krita 3.1 that we'll be able to properly support it!

-- 
Boudewijn Rempt
http://www.valdyas.org, http://www.krita.org, http://www.boudewijnrempt.nl