Re: [VirtualGL-Users] Stereoscopic Rendering (quad-buffered) and VirtualGL with a headless server

[Antony C. <ant...@cl...>]

On 10/03/2015 12:33, DRC wrote:
> I can't say I'm terribly surprised.  Maybe I'm wrong and there is some
> good technical reason why they can't enable stereo Pbuffers, but nVidia
> also has a habit of disabling features in their drivers purely for
> marketing reasons.  Theoretically, it might be possible to make
> VirtualGL emulate stereo using two Pbuffers or even two FBOs on the same
> Pbuffer, but it would make the solution significantly more complex.
> Getting it right would cost a lot more in labor than a QuadroFX costs,
> and quad-buffered stereo is just not popular enough to justify
> re-architecting VirtualGL.
Yeah this was my thought too, "possible but not worth the effort"
>
> Perhaps others can chime in as to whether Grid adapters work properly.
>
> Out of curiosity, what were you planning to use as a client?  That's the
> other hell of quad-buffered stereo-- you need a card on the client as
> well that can draw in stereo, which probably means another Quadro.
There is already a machine connected to the quad buffered display with a 
quadro card which works fine. The customer is a university who is 
purchasing a cluster from us and would like to use Virtual GL to 
directly view datasets from one of the cluster nodes. This would have 
direct access to the large and fast parallel scratch filesystem and 
would avoid the need to copy all the data out over ethernet to the local 
storage in the node which can take a long time and could easily just not 
fit.
> On 3/10/15 5:26 AM, Antony Cleave wrote:
>> Thanks for this, looking at the options it looks like for stereo we are
>> indeed stuck with the Quadro cards. All stereo options I've tried seem
>> to get disabled on the M2090 and I don't have a Grid card to try and
>> it's not exactly cheap so I'm not going to pop down to PC world and pick
>> one up on the off chance it works.
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