Re: [ft-devel] Kerning support in freetype

[David Turner]

Hello Russel,


> If freetype has already loaded all the pairs from the file, then cacheing
> wouldn't be needed (unless you really need them all to emulate some api).
to be fair, caching might be a good idea, performance-wise. That's because
searching for kerning pair usually requires a binary search in the font 
file's
tables, while a cache would usually require a hash-table lookup, which
can be a lot faster.

but that's for the most extreme cases :-)

Cheers,

- David Turner
- The FreeType Project  (www.freetype.org)

> > > > 3) returned kerning doesn't match Wndows one, probably due to 1).
> > >
> > > Must be a bug.
> >
> > I'm attaching my test program. Using FreeType from CVS it prints:
> >
> > face Arial Regular has kerning
> > kerning between 32 and 65 is -2:0
> > kerning between 32 and 84 is -1:0
> > kerning between 70 and 44 is -3:0
> >
> > which is a bit small for a 1200 pixels font face.


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