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Re: [ft-devel] Downscaling of rendered bitmaps?
From: |
Werner LEMBERG |
Subject: |
Re: [ft-devel] Downscaling of rendered bitmaps? |
Date: |
Sat, 12 Mar 2016 08:03:30 +0100 (CET) |
> So Werner and me have been discussing a possible TARGET_MEDIUM in
> secret and he pointed out that the often fitted-to-full-pixels
> TrueType fonts could simply be rendered as overscaled bitmaps and
> scaled down to get a "slight" to "medium" look.
Mhmm, it's not *that* simple, I think, since you should somehow assure
that, say, the ascender height gets aligned to an integer value if
possible.
> ft_smooth_render_generic() can produce bitmaps 3x the y-size when I
> set vmul to true, but do I assume correctly that I need to *write* a
> function to scale it back down?
Yes, AFAIK, since you can't use a colour filter in the non-LCD
direction.
Werner