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Re: [ft-devel] autohinter for LCD
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From: |
Werner LEMBERG |
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Subject: |
Re: [ft-devel] autohinter for LCD |
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Date: |
Fri, 31 Mar 2017 08:50:29 +0200 (CEST) |
>> Uh, doesn't that just do "light" hinting on the x-axis?
>
> No, MONO is brutal.
I think you are misreading the code. Stem snapping
(AF_LATIN_HINTS_HORZ_SNAP) is *not* mono! This would be rather
AF_LATIN_HINTS_STEM_ADJUST.
AF_LATIN_HINTS_HORZ_SNAP is *slightly* adjusting the stem width by
using discrete values. AF_LATIN_HINTS_STEM_ADJUST always snap to full
pixels.
> Have you ever wondered why the stem darkening works in LIGHT only
> and does not work with LCD? The proposed fix is here:
> http://git.savannah.gnu.org/cgit/freetype/freetype2.git/commit/?h=Harmony&id=e47feb03cca26b4c8c683f43821438001471597d
It might be useful to do first stem darkening and then stem snapping.
However, this needs investigation. Simply switching off (discrete)
stem snapping is premature, I believe.
Werner