Remote OpenGL -- getting it to work?

[Antoine Martin]

On 01/06/16 05:13, Thomas Lübking wrote:
> On Tue, May 31, 2016 at 08:33:14AM -0700, L. A. Walsh wrote:
>> Glynn Clements wrote:
>>> L. A. Walsh wrote:
>>>
>>>> I have sometimes gotten some GLX programs to work for a short while,
>>>> but more often than not, I don't get them to work at all.
>>>
>>> The most likely reason for this is that the program needs a later
>>> version of OpenGL than Cygwin's X server provides.
>> ----
>>   Hmmm....what does this mean, then?
>> OpenGL vendor string: NVIDIA Corporation
>> OpenGL renderer string: GeForce GTX 590/PCIe/SSE2
>> OpenGL version string: 1.4 (4.5.0 NVIDIA 355.98)
> 
> Indirect GL is confined to GL 1.4 (ie. fixed function path, notably no
> glsl)
> The driver and GPU support 4.5, but only on direct contexts.
> 
> You should check whether indirect GL works generally (there're somet
> pitfalls), ie. whether glxgears works.
> If so, you best contact the authors of the failing GL clients and ask
> whether they provide a fixed function path (and how to select it)
> 
> If everything else fails, you'll have to resort to eg. VNC (afair
> only x11vnc will work for you)
FWIW: xpra + virtualgl works very well and is often considerably faster
than doing GL over a remote display connection. More info here:
https://xpra.org/trac/wiki/Usage/OpenGL

Cheers
Antoine