XRandR/Xinerama and EyeFinity

Alex Deucher alexdeucher at gmail.com
Mon Jun 9 07:51:57 PDT 2014

On Mon, Jun 9, 2014 at 10:42 AM, Nikita Orlov <nikitos1550 at yandex.ru> wrote:
> Thanks!
> Maybe you can help me, Xrandr (at least 1.4) has transform feature.
> As I understand real transform work is done at driver level.
> Xrandr and Xorg just push throw data about transformation.
> So, there must be place in driver code where this transformation is processing.
> I want to try to implement my own transform. But I can`t find right place in src to start with...
> Maybe you know?

IIRC, xrandr uses the render extension to handle transforms (rotation,
scaling, etc.).  Start here:


> 09.06.2014, 18:39, "Alex Deucher" <alexdeucher at gmail.com>:
>> On Mon, Jun 9, 2014 at 10:32 AM, Nikita Orlov <nikitos1550 at yandex.ru> wrote:
>>>  Hi!
>>>  How are related XRandR/Xinerama and EyeFinity?
>>>  Is XRandr/Xinerama implemented via hardware EyeFinity? Or are them totally separate features?
>>>  I mean xf86-video-ati and Linux of cource.
>> Eyefinity is a marketing term for single logical surface multi-head
>> and a bunch of other related features.  xrandr multi-head support is
>> roughly equivalent in functionality.
>> Alex
> --
> Nikita Orlov
> Skype: nik_stet
> QQ: 2717846083

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