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Re: [ft] freetype autohint versus ttfautohint
From: |
Werner LEMBERG |
Subject: |
Re: [ft] freetype autohint versus ttfautohint |
Date: |
Sat, 17 Dec 2011 19:30:39 +0100 (CET) |
Hello Vern!
> What could be the differences between a font hinted with ttfautohint
> rendered with freetype, and a non-hinted font rendered with
> freetype's via it's built-in autohinter?
>
> As i understand it there should be no difference, as ttfautohint is
> based on freetype libs anyway.
There is a difference, since you can't switch off horizontal hinting
in the autohinter currently. Patches are highly welcomed to add that
to FreeType :-)
> But what if a non-hinted font is rendered on a freetype system under
> 'full' hinting? Will that font be autohinted and rendered exactly
> the same as a ttfautohint'd font?
You can find the following entry for version 2.4.5 in the CHANGES
file:
- If autohinting is not explicitly disabled, FreeType now uses the
autohinter if a TrueType based font doesn't contain native hints.
In other words, if you don't disable autohinting explicitly, FreeType
applies autohinting to a TrueType font which has no bytecode.
Werner