Re: [ft-devel] Regression in light hinting mode with freetype 2.2.1

[David Turner]

Hello Frederic,

well, well, I wouldn't necessarily call that a regression. it's really 
what the new light hinting
mode is supposed to be: improved shapes at the expense of slightly 
fuzzier rendering. The
fuzziness can be slightly compensated on LCD screens with the patches at
http://turnerdavid.neuf.fr/freetype/patches/font-patches.html, but the 
result is still
Mac OS X-like.

I'll let you decide wether you should disable horizontal hinting in your 
build of the library,
or not.

Regards,

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


Frederic Crozat a écrit :
> Hi,
>
> I've pushed freetype 2.2.1 in cooker yesterday and I got some reports
> about font rendering becoming worse than the one with 2.1.10 (cooker had
> 2.1.10 + some selected patches from CVS fixing various issues, see
> http://cvs.mandriva.com/cgi-bin/cvsweb.cgi/SPECS/freetype2/freetype2.spec?rev=1.60&content-type=text/x-cvsweb-markup
>  for a full list).
>
> After some investigations, it seems light hinting mode is the culprit :
> I've done a side by side comparison of Deja Vu Sans font (version 2.6)
> at 10.0 points, 95.0 dpi with ftview and light hinting mode seems to
> draw some hinting on the wrong side of the glyp : check at
> http://people.mandriva.com/~fcrozat/ft-2110-221.png
>
> If I enable back horizontal hinting when using light hinting mode
> (aflatin.c:1370), I'm getting back the "correct" rendering, but I'm not
> sure it is the correct solution (since disable horizontal hinting in
> that particular case was done on purpose).
>
>   


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