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Re: Does Freetype work best with gamma 2.2, and how does it interact wit


From: Rob
Subject: Re: Does Freetype work best with gamma 2.2, and how does it interact with KDE gamma setting?
Date: Tue, 4 May 2021 11:20:38 +0100

Ok, I understand.

I am using KDE so I guess qt5 is responsible for gamma correction (and probably 
assumes monitor is 2.2).
On May 4 2021, at 10:53 am, Werner LEMBERG <wl@gnu.org> wrote:
>
> > But if it is correcting the gamma it must assume that my monitor has
> > a certain gamma?
>
> As Allan has written: FreeType does *not* interact with gamma at all!
> If you want to be very precise you could say that FreeType doesn't
> return bitmaps with color or grayscale pixels. Instead, it returns
> *coverage* values (i.e., how much area of a pixel is covered by ink),
> and the calling graphics library has to further process it. This
> includes application of gamma correction.
>
>
> Werner


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