Re: [ft-devel] light advance rounding

[Nikolaus Waxweiler]

> So it is possible. Correct use of rsb_delta and lsb_delta limits the
> positioning error to half a pixel.

But those are only available when the autohinter is active?

I found another implementation of subpixel positioning, Qt5: 
https://github.com/qtproject/qtbase/blob/dev/src/gui/text/qfontengine_ft.cpp#L947

They seem to work with the linear horizontal advance.