D21076: ICC Color Correction Effect

vitaliyf added a comment.


  > If we are going to do all windows, what does this offer over xcalib?
  
  xcalib doesn't do ICC color correction! It only loads 1-dimensional LUTs into the video card. With 1-dimensional LUTs you can basically only tune color temperature and gamma. But you can't make colors look "like they should look".
  
  ICC profile transformation is more complex: it contains either a matrix transformation (RGB = XYZ * 3x3 matrix) - which is also insufficient for a lot of displays to make colors match sRGB - or a full 3-dimensional LUT (cLUT).
  
  So the real transformation is only possible with a shader, so the only place to put is KWin :).

REPOSITORY
  R108 KWin

REVISION DETAIL
  https://phabricator.kde.org/D21076

To: vitaliyf
Cc: davidedmundson, anthonyfieroni, zzag, ngraham, kwin, jraleigh, GB_2, mkulinski, ragreen, jackyalcine, Pitel, iodelay, bwowk, ZrenBot, alexeymin, lesliezhai, ali-mohamed, hardening, jensreuterberg, abetts, sebas, apol, mart