D18377: Update blur to be more natural

zzag added a comment.


  Good Lord, somehow I managed to get this review lost in my pile of emails.
  
  What we are facing here is a classical problem of forgetting to convert non-linear sRGB to linear RGB and vice versa. In our case this level of inaccuracy is acceptable, KWin is not an image editor after all, so we don't have to be that precise (though that's a desirable property).
  
  Also, I don't think that's a right way to convert non-linear sRGB to linear RGB.

REPOSITORY
  R108 KWin

REVISION DETAIL
  https://phabricator.kde.org/D18377

To: anemeth, #vdg, #kwin, davidedmundson, zzag
Cc: rapiteanu, filipf, rooty, ngraham, kwin, jraleigh, GB_2, mkulinski, ragreen, jackyalcine, Pitel, iodelay, bwowk, ZrenBot, lesliezhai, ali-mohamed, hardening, jensreuterberg, abetts, sebas, apol, mart