[Spice-devel] [PATCH v2 spice-protocol 2/2] Add unix GL scanout messages

[Marc-André Lureau]

Hi

----- Original Message -----
> > > Which VGA?  Workflow is quite different on qxl and anything else.
> > > With qxl we'll go send the guests qxl render commands over to the
> > > client, and the client renders it.  On the qemu/server side there is no
> > > rendered primary surface, unless someone asks for it and we kick the
> > > local renderer on the server side to satisfy the request.  Sharing the
> > > primary surface doesn't buy us much here IMO.
> 
> > ..Yes (I know), this is all hypotetical, based on discussion from
> > Frediano to extend scanout to shm/canvas. fwiw, the server does all
> > the rendering at some point or another, so imho, it would be still a
> > good idea to simply share the server surface...
> 
> Sure, we can move the rendering to the server side and provide just the
> final result in a shared memory block to the local client (when a client
> supporting that connects).  I think it makes sense to use new commands
> (be it extended gl-scanout or something else) for this.  I'd expect

Please, let's not try to fit something that is not in our radar. We can easily add flags or new messages. But, I'd be reluctant to merge both gl surface sharing and shm sharing in the same message. I'd rather reuse the existing 2d surfaces. Can we just focus on the (~1y wip) GL case for now?