Hi,
I am working on a Chrome bug (crbug.com/740385) related to subpixel
positioning and hinting.
There is currently an issue where glyphs do not get positioned correctly in
all cases, and to solve this problem I need to enable subpixel positioning.
This works, except when horizontal hinting is enabled ("full hinting" in
xft enables this). In this case, letters get smeared badly.
https://www.freetype.org/freetype2/docs/glyphs/glyphs-3.html suggests that
I should do subpixel positioning if I am not hinting horizontally, which
matches with my understanding.
Therefore, I would like to programatically determine if horizontal hinting
is happening and base the subpixel positioning decision on this
information. But I have not been able to figure out how to do this. Is
there a way that avoids needing to know the internals of the engines?
Thanks,
Adam
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