XRandR/Xinerama and EyeFinity

[Nikita Orlov]

Thanks! Very usefull.

As I understand function 
...
static void xf86RotateCrtcRedisplay(xf86CrtcPtr crtc, RegionPtr region)
{
...

do rotate transformation. 

The last question at the moment, will xorg always enter this function for rotation? Maybe it depends of XRandR version?
And there is 
...
    if (crtc->driverIsPerformingTransform)
        return;
...

So, how can I be sure, that driver is not performing transformation?

I need advice about test environment creation :-)

09.06.2014, 18:52, "Alex Deucher" <alexdeucher at gmail.com>:
> 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:
> http://cgit.freedesktop.org/xorg/xserver/tree/hw/xfree86/modes
>
> Alex
>>  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

-- 
Nikita Orlov
Skype: nik_stet
QQ: 2717846083