D5928: Introducing Night Color - KWin's native blue light filter at nighttime

[Christoph Feck]

cfeck added a comment.


  In https://phabricator.kde.org/D5928#112357, @subdiff wrote:
  
  > In https://phabricator.kde.org/D5928#112339, @cfeck wrote:
  >
  > > The difference between gamma correction and color correction is that the former only uses three 1D LUTs, while the latter can use three 3D LUTs. In other words, gamma correction cannot tint your blue more green, while color correction can.
  >
  >
  > Can you give a source for that definition of the two notions? When I look it up Wikipedia explains Color Correction as a way to change color values in a generic fashion. It's relatively broad. I haven't found a very specific definition like you. In contrast gamma correction is explained as the adjustment of the gamma of the light in general - i.e. all colors at once. You can influence the color balance though by varying the gamma of the separate gamma color channels, which is then again part of color correction. There is also the notion of color management, which is somewhat all of that as well in our context.
  
  
  http://www.color.org/faqs.xalter

REPOSITORY
  R108 KWin

REVISION DETAIL
  https://phabricator.kde.org/D5928

To: subdiff, #kwin
Cc: cfeck, graesslin, davidedmundson, plasma-devel, kwin, ZrenBot, spstarr, progwolff, lesliezhai, ali-mohamed, hardening, jensreuterberg, abetts, eliasp, sebas, apol, mart, hein, lukas
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