[Openicc] multi monitor ICC X configuration
ku.b at gmx.de
Wed May 3 09:23:57 PDT 2006
Here my suggestion...
Remove: Currently there is only one atom defined.
and: The _ICC_PROFILE atom is set on the root window for each screen.
The atom name for the first screen in a root window is _ICC_Profile.
For root windows spanning more than one screen, as typical in Xinerama
multihead configurations, a atom for each screen is added holding the
appropriate ICC profile. All screens in a root window starting from
number one use _ICC_Profile as atom name extended with an underscore plus
the screen number, e.g. _ICC_Profile_1 .
followed by your text:
The atoms are of type XA_CARDINAL with 8-bit elements. The value of the
atoms should be a literal ICC profile, that applications can read and
For the XFree86_DDC_EDID1_RAWDATA atoms is a similiar spec needed and get
posted to fd.o bugzilla #id=3910 ?
+ development for color management
+ imaging / panoramas
+ email: ku.b at gmx.de
Am 03.05.06, 15:45 +0100 schrieb Ross Burton:
> On Wed, 2006-05-03 at 16:58 +0200, Kai-Uwe Behrmann wrote:
> > I extended the _ICC_Profile atom from Ross Burton  to cover more than
> > one screen in a Xinerama configuration. Goal is to provide the means to
> > handle the EDID info as well as the profile information in the X server
> > . Therefore the _ICC_Profile and XFree86_DDC_EDID1_RAWDATA atoms are
> > appended with a underscore + the screen number if the screen number is
> > greater than zero.
> > Thus a _ICC_Profile and XFree86_DDC_EDID1_RAWDATA atom name remains
> > original for the traditional one screen per root window configurations.
> > The number of screens per root window can be detected by the Xinerama X
> > extensions.
> If you can patch the specification and send me the changes, that would
> be great. I'll make a new release of the specification and maybe even
> register a freedesktop.org project to hold it and the associated tools.
> Ross Burton mail: ross at burtonini.com
> jabber: ross at burtonini.com
> www: http://www.burtonini.com./
> PGP Fingerprint: 1A21 F5B0 D8D0 CFE3 81D4 E25A 2D09 E447 D0B4 33DF
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