Re: Getting involved with implementation of remote spice for 3D accelerated VMs

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> 
> Hi,
> 
> On Mon, Jan 09, 2017 at 04:27:35AM -0500, Frediano Ziglio wrote:
> > The patches for Virgl are working and require only tweaks.  We wanted
> > to have some working PoC for all next 3D software, that include GPU
> > passtrough to make sure that the Virgl doesn't complicate the overall
> > design. We plan to have these definitive PoCs in a couple of months.
> >
> > About video streaming acceleration for the client somebody are doing
> > some stuff. Recent client versions are using gstreamer to handle
> > decoding so potentially this could be a question of choosing the right
> > plugins, test and package them correctly
> 
> Yes, I'm trying to play with it now and then in the client using
> gstreamer1-vaapi it works but we don't handle hw decoding specifically.
> If you have all the right bits installed, you can try enabling
> SPICE_GSTVIDEO_AUTO which uses decodebin. It should try vaapi elemets
> (and hw decoding) if possible.
> 

This is partially true.
The best path is never leaving the GPU for the output but I don't
think this is so automatic.

> But to have this working nicely, we should have an easy way to setup
> spice-sever to use vp8 or h264 which broadens the hw decoding
> possibilities (and makes much easier to test too!) - So, I've started
> playing with that first [0]
> 
> [0]
> https://lists.freedesktop.org/archives/spice-devel/2017-January/034815.html
> 
> With that in, working on improving the client-side to handle hw decoding
> will be easier. If you are interested in the decoding side, feel free to
> jump in :)
> 
> > (this is more challenging for Windows for instance).
> 
> Indeed
> 

Not sure how you can use DirectX or other Windows libraries for h/w
decoding.

Frediano

> >
> > ----- Original Message -----
> > 
> > > From: "Behrooz Shabani" <everplays@xxxxxxxxx>
> > > To: "spice-devel" <spice-devel@xxxxxxxxxxxxxxx>
> > > Cc: "Armin Ranjbar" <zoup@xxxxxxxx>
> > > Sent: Sunday, January 8, 2017 12:39:52 PM
> > > Subject: Re:  Getting involved with implementation of remote
> > > spice for 3D accelerated VMs
> > 
> > > Thanks Gerd and hello mailing list :-),
> > 
> > > As it is obvious from my previous email, I am looking for some guidance
> > > to
> > > make some contribution while I am working on my specialization.
> > 
> > > At this moment, I know what I like to be able to do with Spice:
> > 
> > > * Remote access with 3D acceleration
> > > * Decoding the video stream via GPU on the client.
> > > However, I have no idea what their status is and where I should begin to
> > > contribute. Therefore, any information towards making me useful to spice
> > > (as
> > > I want to do more than just basing my research on virtgl/spice), would be
> > > very helpful.
> > 
> > > Thanks in advance.
> > 
> > > P.S. I have joined the IRC channel with the nickname `behrooz` as well.
> > 
> > > On Fri, Jan 6, 2017 at 10:45 AM, Gerd Hoffmann < kraxel@xxxxxxxxxx >
> > > wrote:
> > 
> > > > On Mi, 2017-01-04 at 15:40 +0100, Behrooz Shabani wrote:
> > > 
> > > > > Hi Gerd,
> > > 
> > > > >
> > > 
> > > > >
> > > 
> > > > > I hope you are doing well.
> > > 
> > > > >
> > > 
> > > > >
> > > 
> > > > > I watched one of your talks about virgl and spice, great work!
> > > 
> > > > >
> > > 
> > > > >
> > > 
> > > > > Currently, I am busy with my specialization at Saxion university
> > > > > which
> > > 
> > > > > is about virtualization of graphic cards.
> > > 
> > > > >
> > > 
> > > > >
> > > 
> > > > > I was wondering how I can get involved to implement 3D accelerated VM
> > > 
> > > > > over network with spice. And after that, maybe, with using the GPU of
> > > 
> > > > > the system that runs spice to decode the video stream. Essentially, I
> > > 
> > > > > am looking for your guidance to understand what needs to be done so I
> > > 
> > > > > can get on with implementing it.
> > > 
> > 
> > > > That question is asked best on the spice-devel mainling list (added to
> > > 
> > > > Cc:).
> > > 
> > 
> > > > Improving video encoding support in spice is making progress, and
> > > > remote
> > > 
> > > > support for virtio-gpu (and intel-vgpu) will build on top of that.
> > > 
> > 
> > > > But I don't know in detail what the status is and what still needs to
> > > > be
> > > 
> > > > done to complete remote support.
> > > 
> > 
> > > > cheers,
> > > 
> > > > Gerd
> > > 
> > 
> > > --
> > > regards,
> > > behrooz
> > 
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