[Fontconfig] Bitmap font resizing

[Werner LEMBERG]

> I'm not sure if bitmap scaling is really expected things as the
> outcome on the request.  I'm thinking of other possibilities too as
> someone was sometimes raising the sort of "How to stop fallback" or
> something like that. for instance, how about adding new binding mode
> to ask for strict matching, and if no candidates, simply fails?
> wound't that way avoid such situation?  or is it better relying on
> that bitmap scaling feature in the rendering libraries?
> 
> That may depends on what one wants to do.  having both
> implementation may be ideal though.

Indeed.  Bitmap fonts scaled by non-integer values look horrible if
the output is B/W, and just a bit better if the target is grayscale
(this is, the scaling has been done with proper dithering).


    Werner