Re: Recalculate glyph metrics for variable fonts

[David Colson]

I upgraded to latest free type and it works fine now, so presumably a bug
of some kind in 2.10. No issues updating so as far as I’m concerned the
issue is resolved now.

Thanks

On Wed, 5 Jan 2022 at 06:53, Werner LEMBERG <wl@gnu.org> wrote:

>
> > I am trying to adjust the weight of a variable font, Source Code Pro
> > in particular (https://fonts.google.com/specimen/Source+Code+Pro).
> >
> > I simply call FT_Set_Var_Design_Coordinates with the appropriate
> > parameters, and it basically works, however, it seems to break all
> > the glyph metrics and the whole line of text is displayed with
> > overlapping glyphs, like the advance has become incorrect.
> >
> > This only happens when setting a design coordinate.  Do I need to
> > recalculate the metrics or something after changing a variable?  I
> > had a look around the docs but could not figure out what I'm doing
> > wrong.  Currently using FreeType 2.10.1.
>
> Please check the `ftmulti` FreeType demo program; maybe it gives the
> answer you need – If I compile it from current git, the metrics stay
> the same for Source Code Pro.
>
> Otherwise please post a small, *compilable* example (preferably to be
> executed on the command line) that shows your problem.
>
>
>     Werner
>