Six screens from two HD5850s

[Alex Deucher]

On Mon, Jan 10, 2011 at 7:24 PM, Richard Palmer
<richard.d.palmer at kcl.ac.uk> wrote:
> Dear Alex (and Felix),
>
>> This should work with kms, although 3D does not work with xinerama and
>> it will require a xinerama xorg.conf.
>
> That's fine. Although just out of interest, is 3D support with
> Xinerama (or equiv.) something that may be supported in the future ?.

Not really like directly.  It's really tricky to make 3D work across
multiple heterogeneous GPUs (what GL extensions do you enable, what
happens when the windows moves between cards, etc.).  The solution is
to separate rendering and display, so you'd pick a GPU to render and
then send the rendered image to whichever GPU driving the monitor in
question.

Alex

>
>>  You'll need a separate device
>> and screen section for each head and each device associated with a
>> particular card needs to to have the proper busid of the card.
>
> Right.
>
> Many thanks,
>
> Richard
>
> --
> Richard Palmer                  | Centre for E-Research
> Systems Manager                 |  King's College London
> richard.d.palmer at kcl.ac.uk      |
> Tel: 0207 848 1973              |
>