[Inkscape-devel] Need to work in color spaces other than RGB

I think we've hit the point where we need to revisit our rendering and such to include more than just RGB.

This bug is one example: "Export to TIFF to support CMYKA color" https://bugs.launchpad.net/inkscape/+bug/492402

It looks like to be able to solve this case, we would need to be able to have our engine render to four-channel CMYK in order to preserve data. Simply rendering to RGB and then converting to CMYK using LittleCMS won't work, since black ink separation will be lost, etc.

Am I seeing this wrong?

Also, could we perhaps get away with export by rendering n channels, each being grayscale?

Thanks.