[Openicc] xrandr output properties / icc profiles

Frederic Crozat fred at crozat.net
Wed Jul 23 07:55:51 PDT 2008


On Thu, Jul 24, 2008 at 4:47 PM, Kai-Uwe Behrmann <ku.b at gmx.de> wrote:
> Am 23.07.08, 16:26 +0200 schrieb Frederic Crozat:
>> On Thu, Jul 24, 2008 at 4:08 PM, Kai-Uwe Behrmann <ku.b at gmx.de> wrote:
>> > Am 18.07.08, 07:06 +0200 schrieb Frederic Crozat:
>> >> On Wed, Jul 16, 2008 at 4:28 PM, Graeme Gill <graeme at argyllcms.com> wrote:
>> >> > Tomas Carnecky wrote:
>> >> >> should != does
>> >> >>
>> >> >> See the server-side implementation of XRRQueryVersion():
>> >> >> http://gitweb.freedesktop.org/?p=xorg/xserver.git;a=blob;h=5525427f667dcfb0e5b8b3cb8a2a99c4623c6df8;hb=55644d2f1cddf1777587f213ed581b6087d9fdad;f=randr/rrdispatch.c#l37
>> >> >
>> >> > It could obviously be much better implemented then, and without a great
>> >> > deal of trouble - all it needs is a "return XRandR capabilities" API
>> >> > in the driver.
>> >>
>> >> The way to detect if driver is really supporting RandR 1.2 or with
>> >> compat-RandR 1.2 is used is to check if output name is "default" and
>> >> there is no CRTC attached. In that case, compat-RandR 1.2 is being
>> >> "generated" by Xserver.
>> >
>> > I can not see any guarantee in this behaviour.
>> > http://gitweb.freedesktop.org/?p=xorg/proto/randrproto.git;f=randrproto.txt;a=blob
>> > does not even mention "default".
>>
>> Check Xorg code ;)
>>
>> (thanks Matthias Classen for the hint)
>
> I checked here and my XRRScreenResources has one output and one crtc.
> The output has one crtc attached.
> 2 monitors over twinview + Xinerama
>
> Does you talk about XRandR 1.3?

No, I'm talking about XRandR 1.2 : if a driver doesn't not support
1.2, output name will be "default" (and not CRTC will be detected).

-- 
Frederic Crozat


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