[cairo] Color fonts

[Behdad Esfahbod]

On Fri, Jul 7, 2017 at 5:53 PM, Matthias Clasen <matthias.clasen at gmail.com>
wrote:

> On Sat, Jul 1, 2017 at 2:25 AM, Uli Schlachter <psychon at znc.in> wrote:
>
>>
>> Okay... so what is the new model? What happens when I draw a color glyph
>> with operator XOR and a red source?
>
>
> The red source is ignored for color glyphs because they are used as the
> source.
>

Note that while with Google's (CBDT/CBLC) and Apple's (sbix) color font
formats the red source will be ignored, with the Microsoft (COLR/CPAL) and
Adobe's (SVG/CPAL) the font can have color imaging as well as using the
current foreground color.  So, the glyph image won't be just a source
either.  It will be a mix of source and mask...  Right now those two
formats are not implemented in FreeType though.

-- 
behdad
http://behdad.org/
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