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Re: [ft-devel] Autohinter: stem darkening, first rough prototype


From: Nikolaus Waxweiler
Subject: Re: [ft-devel] Autohinter: stem darkening, first rough prototype
Date: Tue, 1 Sep 2015 22:26:38 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.2.0

What is the situation with SanSerif fonts? Serifs may turn to spikes
at low resolutions. This is problematic for the emboldener.
If SanSerifs are better, try -0xDDB4 on ftoutln.c:978. This will more
aggressively reject 150-degree or sharper spikes.

http://postimg.org/image/nuivug5l7

Gamma: 1.8
Top row: git master, no emboldening.
Bottom row: emboldening (default CFF parameters, lower size limit 4ppem), your safe guard and -0xDDB4.

Still ugly.

You can experiment yourself if you want to, clone my branch and do e.g. "LD_PRELOAD=objs/.libs/libfreetype.so ftview 16 /usr/share/fonts/dejavu/DejaVuSerif.ttf"



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