[Openicc] xrandr output properties / icc profiles

[Hal V. Engel]

On Thursday 24 July 2008 01:25:07 pm Kai-Uwe Behrmann wrote:
> Am 23.07.08, 12:59 -0700 schrieb Hal V. Engel:
> > On Thursday 24 July 2008 07:47:15 am Kai-Uwe Behrmann wrote:
> > > I checked here and my XRRScreenResources has one output and one crtc.
> > > The output has one crtc attached.
> > > 2 monitors over twinview + Xinerama
> >
> > I am not sure I understand this.  With the nvidia driver you can use
> > xinerama or twinview or twinview with xinerama hints (fakerama I guess). 
> > I suspect you
>
> The later, yes.
>
> > mean the last one.  By the way with twinview you can not access the
> > individual LUTs for your monitors at least using the XVidMode API and the
> > only way I have found to get access to the individual LUTs is to disable
> > twinview and use a
>
> Graphic card LUTs are typical of too low resolution for 16-bit and HDR.
> Even without such LUTs there is too much banding here for my taste.

The ouput from the video card is limited to 8 or (in a few cases) 10 
bits/channel and what the LUT is doing is fine tuning those 8 or 10 bit steps.  
I agree that the current 8 or 10 bit/channel limitation of our graphics cards 
and DVI connections is too low and it does not appear that this will be fixed 
for a long time since the hardware vendors seem to think the current situation 
if fine.

>
> > generic Xinerama setup .  This results in a system that can have both
> > displays fully calibrated and that will run OpenGL apps across both
> > displays just like twinview but that can not be used with any composit
> > extentions (compitz or KDE4.x composited desktop) since these will not
> > run on an Xinerama system.
>
> One GSoC project needs compiz. So I am fine with a twinview + xinerama
> setup in this regard.

OK I have xorg.conf files setup to do either but I almost always run the 
Xinerama setup.

>
> kind regards
> Kai-Uwe Behrmann

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