Re: [ft-devel] [ftgrid] Display rendered bitmap (new feature).

[Nikolaus Waxweiler]

> This is where you can read about text layout and interplay between
> advance, lsb_delta, and rsb_delta.

Ok, so after also reading
http://freetype.org/freetype2/docs/tutorial/step2.html#section-1:

> "linearHoriAdvance: [...] Indeed, the value of metrics.horiAdvance
> that is returned in the glyph slot is normally rounded to integer
> pixel coordinates (i.e., being a multiple of 64) [...]"

1) advance.x (== metrics.horiAdvance) is purely important for pixel
placement?
2) Layout engines use "linearHoriAdvance" to compute layouts?
3) How are fractional advance widths realized (like DirectWrite can do 
them)?