On Friday 2006-07-21 11:14 +0300, Henri Sivonen wrote: > I gather that a normative reference to the Porter–Duff paper is needed: > http://keithp.com/~keithp/porterduff/p253-porter.pdf
Perhaps, assuming that's what's been implemented, although that would only define 10 of the 12 operators in the spec. But that paper doesn't define binary operators for 'darker' and 'lighter', which seem to be among the less-interoperable right now. (It defines a unary 'darken' operator over a space of numeric parameters.) -David -- L. David Baron <URL: http://dbaron.org/ > Technical Lead, Layout & CSS, Mozilla Corporation
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