[Mesa-dev] [PATCH RFC 0/2] GBM API extension to support fusing KMS and render devices

[Michel Dänzer]

On 15.03.2016 01:04, Daniel Stone wrote:
> On 9 March 2016 at 02:57, Michel Dänzer <michel at daenzer.net> wrote:
>> On 08.03.2016 20:36, Daniel Stone wrote:
>>> Taking the approach I suggested would allow us to solve multi-GPU
>>> with the same approach, whereas with the wrapper driver ... who
>>> volunteers to write the Radeon+Intel combination driver?
>>
>> Why would a new wrapper driver be needed for setups which already have
>> working solutions?
> 
> Well, a few weeks ago they were displaying garbage (unless you can
> visually resolve tiling to linear), and now they work at the cost of
> every target buffer having suboptimal display.

You're losing me, but I guess you're referring to
https://patchwork.freedesktop.org/patch/71713/ ? First of all, that
problem happens with an AMD GPU only, nothing to do with multi-GPU (with
multi-GPU, I think the shared buffer should already be forced to linear
anyway, should work fine). Also, neither that patch nor any other
similar one has landed.


-- 
Earthling Michel Dänzer               |               http://www.amd.com
Libre software enthusiast             |             Mesa and X developer