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Re: [ft-devel] FreeType vs Gamma Correction
From: |
Alexei Podtelezhnikov |
Subject: |
Re: [ft-devel] FreeType vs Gamma Correction |
Date: |
Tue, 18 Jun 2019 14:44:38 -0400 |
> > FreeType simply provides *colorless* coverage map,
> > i.e., fraction of each pixel covered by an outline. This coverage is a
> > proportion of a text color to be mixed/blended with a surface color. It is
> > just a proportion, it is never transformed.
>
> Perfect thanks, this is exactly what I expected/meant; sorry for my
> imprecise description :D
You got it the first time. Even LCD maps are still just coverage maps
for each color channel separately. ClearType filtering or Harmony
shifting ensures that each color channel has the same *integral*
coverage to avoid color fringes in thin features - cut all the crap
about visual perception.