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Re: [ft-devel] Peculiar Hinting / Rendering Behavior

From: Werner LEMBERG
Subject: Re: [ft-devel] Peculiar Hinting / Rendering Behavior
Date: Sun, 07 Feb 2016 19:33:30 +0100 (CET)

>> Here's another recipe to see the artifact even better (I'm using
>> msmincho.ttc from Windows 7):
>>   ftgrid -f 4420 19 msmincho.ttc
>> (value 4420 is the glyph index of U+56DB in this font).  After
>> pressing key `a', a vertical line on the left is missing in the
>> outline.  Interestingly, this happens at 100% zooming only.
> This is a typical dropout situation.  [...]  I am actually surprised
> that this does not happen more often.  The left edge line happens to
> cover two adjacent pixels at less than 50%, which is also
> surprising.  Deep inside, this is probably a stroker rounding issue.

Interesting.  Can you investigate this in more detail?


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