Device tables depend on ppem, so despite the scale being set on the font, you should still set the exact ppem.
On Tue, Jun 28, 2016 at 06:43:58PM -0400, Kelvin Ma wrote: > so that’s the only way huh… > doesn’t that kind of defeat the purpose of hb.font_create() and having many > scaled versions of the same font? You would only ever need one font of each > face, scaled to the UPEM, if the fontsize was to be applied externally > after shaping already occurred. > > On Tue, Jun 28, 2016 at 5:51 PM, Behdad Esfahbod <[email protected]> wrote: > > > HarfBuzz coordinates work in a int32 space. You are free to set whatever > > scales you want on the font. For example, use 6 or 8 or 10 or 16 bits of > > sub-pixel precision by multiplying your scale by a number. > > > > On Tue, Jun 28, 2016 at 4:57 PM, Kelvin Ma <[email protected]> > > wrote: > > > >> It appears that harfbuzz rounds all decimals to integers when giving > >> glyph advances and offsets. This is causing some ugly misalignment problems > >> in arabic shaping, as well as latin cursive fonts. (see pictures) > >> > >> [image: Inline image 1] > >> > >> [image: Inline image 2] > >> > >> [image: Inline image 3] > >> How do I get harfbuzz to preserve the floats? > >> > >> _______________________________________________ > >> HarfBuzz mailing list > >> [email protected] > >> https://lists.freedesktop.org/mailman/listinfo/harfbuzz > >> > >> > > > > > > -- > > behdad > > http://behdad.org/ > > > _______________________________________________ > HarfBuzz mailing list > [email protected] > https://lists.freedesktop.org/mailman/listinfo/harfbuzz _______________________________________________ HarfBuzz mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/harfbuzz
