[HarfBuzz] When to use hb_font_set_ppem()?

[Behdad Esfahbod]

On Mar 9, 2013 12:07 PM, "Khaled Hosny" <khaledhosny at eglug.org> wrote:
>
> Hi All,
>
> My understanding is that x/y_ppem are used for device tables
> adjustments, but since I’m outputting to PDF files, I think I don’t
> need/shouldn’t use such adjustments, what do you think?

Correct.  Think of setting each to nonzero as "enable hinting in this
direction" kind of thing.
> Regards,
> Khaled
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