Re: [Linaro-mm-sig] Memory Management Discussion

On Wed, Apr 20, 2011 at 5:29 PM, Marcus Lorentzon marcus.xm.lorentzon@stericsson.com wrote:

And for the 1024 limit, I don't think the backbuffers or shared textures need to be device-to-device capable. GEM should be fine, since this sharing is just inter process, but same device (as already proven in DRI & Wayland).

That's a rather important thing. GEM is _only_ for buffer objects of one device, no device-device sharing possible. Dave Airlie wrote a proof-of-concept for that to enable runtime-switchable graphics (where the add-on gpu blits to the scanout buffer of the integrated gpu when running):

http://airlied.livejournal.com/71734.html

-Daniel