Greetings to the freetype community.
I am using freetype 2.5.0 and have encountered an interesting rendering
artefact around hinting. I am using the Microsoft "MS Mincho Regular"
true type typeface (msmincho.ttc) found with Windows 8:
ftview -m "四" -r 150 9 msmincho.ttc
(that's character 0x56db for the message)
When the viewer loads, do two things:
(1) Hit 'b' to turn embedded bitmap strikes OFF.
(2) Hit 'a' to turn anti-aliasing OFF
In my version of ftview, following these two steps results in the left
vertical bar of the character to go missing. What I find to be rather
interesting is that when I hit the 'h' key to turn hinting OFF in
ftview, then the left vertical bar of the glyph returns!
My understanding of hinting is that it would do the opposite. In other
words, turning hinting ON would enable better character generation.
Is this a problem in the font itself? A problem in freetype? Or is my
understanding of hinting errant?
FWIW, forcing the autohinter on with the 'f' command will also correct
the problem, but I can't use that in my code as I noticed that the
autohinter tends to lighten some bold fonts at small resolutions, which
for the moment is not desirable for me.
Thanks,
Darrell
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