[XeTeX] cmyk colour support broken?

[William Adams]

On May 19, 2006, at 11:03 AM, Jonathan Kew wrote:

> This is probably because xdv2pdf doesn't really know how to do CMYK
> colo[u]r; it converts it internally to RGB and passes that on
> CoreGraphics when it draws the text.
>
> The original reason for this is that the first form of color
> supported in XeTeX was the font attribute (rather than \specials),
> which was rendered directly through ATSUI styles; and ATSUI only
> supports RGB(A) color specification. This is no longer how things
> work; I don't draw through ATSUI any more, but directly with
> CoreGraphics, having used ATSUI to get the positioned glyphs -- so in
> principle, I think xdv2pdf could be revised to use proper CG color
> spaces, etc. Just hasn't happened yet. Sorry!
>
> If you're only using OpenType (rather than AAT) fonts, and could
> render the document on Linux using xdvipdfmx as the driver, that
> might work better -- I don't know what the color support is like
> there, but it's probably better.

any hope of being able to compile xdvipdfmx for Mac OS X?

William

-- 
William Adams
senior graphic designer
Fry Communications



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