[Spice-devel] OpenGL "passthrough"

[Mosebach Kai]

Both would be very helpful :-) And important from a market/competitive
point of view.

Please let me have a look at the patches if possible,

Thanks Kai

On 11/9/11 5:54 PM, "Alon Levy" <alevy at redhat.com> wrote:

>On Wed, Nov 09, 2011 at 03:57:30PM +0000, Mosebach  Kai wrote:
>> On 11/9/11 3:51 PM, "Alon Levy" <alevy at redhat.com> wrote:
>> 
>> 
>> >On Wed, Nov 09, 2011 at 01:52:12PM +0000, Mosebach  Kai wrote:
>> >> Hi guys,
>> >> 
>> >> Just a though :
>> >> 
>> >> In a scenario where a kvm-host system has a openGL capable display
>> >> adapter, wouldn't it be possible (and relatively simple compared to a
>> >>full
>> >> VGA passthrough) to just
>> >> pass the OpenGL interface/access into the VMs QXL Adapter making this
>> >>one
>> >> (HW accelerated) OpenGL aware?
>> >
>> >There are threads in qemu-devel about using pci passthrough for using
>> 
>> I tried for long time now to pass through PCIe Hardware into the guest
>> with all kind of PCIe cards w/o too much off success. So that¹s not
>>what I
>> want ;-)
>> 
>> >the host GPU from the guest. If you actually want to view the results
>> >then yes, it's relatively simple in theory. Maybe also in practice, but
>> >I've been struggling with a slightly larger problem, doing OpenGL and
>> >Direct3D passthrough, for almost a year now, with no results to show :/
>> >
>> >I do have patches on my harddrive somewhere by Izik Eidos that do a
>> >proof of concept for GL passthrough from a windows guest to a
>> >windows/linux client, I could ask him if it's ok to post them if you'd
>> >like. (and if I can find them).
>> >
>> >Basically it adds qxl messages for all the GL commands, adds a surface
>> >type, tracks all commands from the last SwapBuffers (I guess
>> >wglSwapBuffers - the equivalent of glXSwapBuffers) per surface, and
>> >passes all of those to the client. Rendering on the server, that is the
>> >host, will be a little simpler.
>> 
>> So (if I got you right and you got me right) we talk about the QXL
>>device
>> on the KVM guest receiving OpenGL commands and passing them (thru
>> qemu-kvm) downwards to the OpenGL capable hardware on the KVM Host
>> (server). The client (spicec or similar) should not be involved at all.
>>Is
>> there any work in progress (for rendering on the server) - similar to
>>the
>> RemoteFX project of HyperV?
>> 
>
>I know I'm working on enabling both server side and client side
>rendering, not aware of anyone else.
>
>> 
>> Cheers Kai
>> 
>> >
>> >> 
>> >> Thanks for enlightenment,
>> >> 
>> >> Kai
>> >> 
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>>