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

[Dave Arnold]

Two quick thoughts:

Don't use .jpg for screen shots. The compression hinders analysis of the 
rendered pixels. I recommend lossless .png.

Are you missing a units-per-em normalization somewhere? I.e., 1000 CFF vs. 2048 
TTF? Could that be causing too much darkening?

-Dave

On 9/1/2015 1:26 PM, Nikolaus Waxweiler wrote:
> > 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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