Bug 321218 - Color correction + Active window glow + present windows = ugly fat white border
Summary: Color correction + Active window glow + present windows = ugly fat white border
Status: RESOLVED INTENTIONAL
Alias: None
Product: kwin
Classification: Plasma
Component: colorcorrection (other bugs)
Version First Reported In: 4.10.4
Platform: Gentoo Packages Linux
: NOR normal
Target Milestone: ---
Assignee: Casian Andrei
URL: http://oi39.tinypic.com/j8ef47.jpg
Keywords:
Depends on:
Blocks:
 
Reported: 2013-06-16 10:00 UTC by Lukas
Modified: 2017-07-02 16:09 UTC (History)
1 user (show)

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Description Lukas 2013-06-16 10:00:56 UTC 
Not maximized windows with active glow have in present window effect ugly white border...viz pic. Same problem is in desktop grid when it uses present window effect.

Reproducible: Always
Comment 1 Martin Flöser 2013-06-16 10:21:59 UTC 
Please provide output of:
qdbus org.kde.kwin /KWin supportInformation
Comment 2 Lukas 2013-06-16 10:26:24 UTC 
http://pastebin.com/A8Tt4uHe
Comment 3 Thomas Lübking 2013-06-16 10:36:07 UTC 
> colorCorrected: true
Tried disabling that? ("kcmshell4 kwincompositing", last tab)
Comment 4 Lukas 2013-06-16 10:39:53 UTC 
I've noticed one detail. On workspace must be at least 3 windows to reproduce this bug everytime in simple present window effect. In desktop grid one is enought. Of course must be active to have glow on.
Comment 5 Lukas 2013-06-16 10:42:33 UTC 
(In reply to comment #3)
> > colorCorrected: true
> Tried disabling that? ("kcmshell4 kwincompositing", last tab)

This solved the problem. Thanks. I had no idea this can make this kind of problem :) Maybe the topic should be changed to add this detail :)
Comment 6 Thomas Lübking 2013-06-16 11:13:00 UTC 
In case you do not actually require shader driven color correction (wide gamut display) be aware that it also causes some overhead and if you have a WG display and actually require it, afaik activating color correction in kwin will break the color profile handling of eg. GIMP etc. (unless that meanwhile would support oyranos to exclude regions)
Comment 7 Lukas 2013-06-16 11:47:14 UTC 
Well I am using a monitor icc profile in the kolor-manager, but I noticed this enhance colors a little bit more. However it doesn't work with vdpau when the compositing is disabled. If it's enabled, there is a tearing. I read that it's maybe fixed in 4.11 so I am waiting if so.
Comment 8 Martin Flöser 2017-07-02 16:09:22 UTC 
Color correction got dropped from KWin. Thus the bug cannot be fixed any more.