vglrun is nothing but a convenience script that sets environment
variables, including the all-important LD_PRELOAD variable that
activates VirtualGL.
You can also theoretically gain write access to the VirtualGL
configuration through a shared memory segment, if you knew the ID of the
segment (see vglconfig.cpp for an example.)
On 4/27/12 1:09 AM, Stefan Eilemann wrote:
>
> On 26. Apr 2012, at 22:52, DRC wrote:
>
>> getenv("VGL_DISPLAY") doesn't work?
>
> Perfect! I didn't think that 'vglrun -d' will set VGL_DISPLAY. Now our GPU
> discovery code supports VirtualGL detection:
>
> type GLX
> hostname node12.local.
> session default
> port 0
> device 0
> viewport [0 0 1920 1200]
> flags VirtualGL
>
> type GLX
> hostname node12.local.
> session default
> port 0
> device 1
> viewport [0 0 1920 1200]
> flags VirtualGLDisplay
>
>
> Cheers,
>
> Stefan.
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