[Openicc] Profile installation and association for Linux/Unix/X11

Kai-Uwe Behrmann ku.b at gmx.de
Wed Apr 23 03:42:18 PDT 2008

Am 23.04.08, 18:29 +1000 schrieb Graeme Gill:
> Tomas Carnecky wrote:
> > Simply attaching the whole ICC profile to the window would waste memory. 
> > Once toolkits start using it, then on a normal desktop you will have ~20 
> > windows each with the same profile attached and you end up with wasted 
> > memory from duplicated profiles.
> _ICC_PROFILE isn't attached to "windows", it's attached to the
> root window (more then one only if the root window is composed
> on more than one monitor), or in the case of XRandR 1.2, the output
> so there is a 1:1 correspondence between the number of monitors and the
> number of profiles. The number of application windows doesn't come into it.

Both you are talking about different things. The root window 
_ICC_PROFILE_xxx atom is a output profile, while the proposed window 
profile XID by Tomas is a input profile.

Of course they have to interact for the colour transformation.

kind regards
Kai-Uwe Behrmann
developing for colour management 
www.behrmann.name + www.oyranos.org

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