XRandR support checking

[Graeme Gill]

Peter Hutterer wrote:
> On Tue, Jul 08, 2008 at 02:02:48PM +0200, Kai-Uwe Behrmann wrote:
>> Whats the easiest way to see if a particular server, the actual running 
>> one, supports XRandR 1.2 ?
> 
> XRRQueryVersion()

Doesn't seem to work. I have reports of both the nVidia and ATI
(binary) drivers reporting XRandR 1.2, when in fact they do
not support V1.2 (attempts to access the VideoLUTs fail).

Graeme Gill.