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List:       kwin
Subject:    Re: RFC: invert effect for XRender resp. independent of the compositor
From:       Thomas_Lübking <thomas.luebking () gmail ! com>
Date:       2012-03-21 21:43:01
Message-ID: op.wbjilza19bmiid () localhost ! localdomain
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Am 21.03.2012, 18:59 Uhr, schrieb Martin Gräßlin <mgraesslin@kde.org>:

> I think that makes totally sense. Even more that sounds like it could  
> also be possible to do color correction for red/green blindness, right?
To simulate the effect or to compensate it?
I have no idea, but it's unlikely possible to eg. turn green into blue and  
red into yellow - if that does help.

> something I wanted to have in KWin for years but failed so far as I  
> don't know anyone with color blindness.
Me neither. However if  got it somehow right, filters to compensate this  
are used.
Eg. reducing gamma and contrast for the intact receptors to match the  
damaged one and increase the global brightness to compensate the resulting  
darkness.

nvidia-settings has such feature anyway - so if we find someone suffering  
 from red/green weakness and having an nvidia GPU, we could ask him to  
check whether that helps him anything ;-)

Cheers,
Thomas
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