pull request: output and offload complete tree

[Michal Suchanek]

On 18 July 2012 11:50, Dave Airlie <airlied at gmail.com> wrote:
> On Wed, Jul 18, 2012 at 7:49 PM, Dave Airlie <airlied at gmail.com> wrote:
>> On Tue, Jul 17, 2012 at 10:30 PM, Michal Suchanek <hramrach at gmail.com> wrote:
>>> On 16 July 2012 21:09, Dave Airlie <airlied at gmail.com> wrote:
>>>> On Mon, Jul 16, 2012 at 11:28 PM, Michal Suchanek <hramrach at gmail.com> wrote:
>>>>> Hello,
>>>>>
>>>>> can this be used to start an X server with dummy driver as output and
>>>>> a real card for rendering?
>>>>
>>>> No.
>>>
>>> And what is so different about dummy compared to an usb dongle that it
>>> cannot be used in this case?
>>
>> He asked about offload not output slaving.
>>
>> offload requires a primary renderer and a secondary renderer.\
>
>
> sorry sorta misread,
>
> but dummy is dumb, doesn't have any access to a kernel driver for
> buffer sharing.

So a dummy KMS driver would be required, or support in dummy to use a
buffer provided by another driver.

Thanks

Michal