[Intel-gfx] [i-g-t PATCH v1 07/14] lib: Map dumb buffers

[Daniel Stone]

On Wed, 2016-03-02 at 14:54 +0000, Chris Wilson wrote:
> On Wed, Mar 02, 2016 at 02:40:44PM +0000, Daniel Stone wrote:
> > On Wed, 2016-03-02 at 14:39 +0000, Chris Wilson wrote:
> > > Don't forget to call dirtyfb then.
> > Are you talking about frontbuffer rendering, or pageflipping
> > between
> > two dumb buffers?
> Afaik, no one yet tracks damage on a backbuffer before a flip. But we
> don't constrain the tests to backbuffer as we do need to exercise
> frontbuffer rendering and iirc those tests all use set-domain. I
> don't
> see any PSR/FBC testing using the dumb framebuffers... Or is the dumb
> framebuffer purely a backbuffer + flip model?

Right, Weston strictly uses pageflipping, because frontbuffer rendering
isn't pretty. xf86-video-modesetting uses frontbuffer rendering, and
does DirtyFB. So I'd say that's our ABI.

Cheers,
Daniel