[vbox-dev] OpenGL service screen redirection

[Rūdolfs Bundulis]

Hi,

again thanks to everyone for the previous info on 3D rendering redirection
in the OpenGL service. I had time to test it out and stumbled upon a thing
I need some clarification on. I am running my frontend on an Ubuntu server
with no X11 and thus the OpenGL test app failed since I don't have X11 and
no DISPLAY environment variable set. I exported VBOX_CROGL_FORCE_SUPPORTED
to force the service to enable 3D but later on when it actually tries to do
anything it fails again (render spu complains that no display is set, which
is totally logical since it isn't). So the question is - if I'm running the
offscreen redirection thing by calling crVBoxServerOutputRedirectSet do I
still need to deploy X11 and set DISPLAY variable for OpenGL service to
work? Or must I do something else to tell it not to touch X11? Since I
somewhat expected that in the case of offscreen rendering there is not much
sense in trying to use a physical display, however I'm not aware of the
internals of OpenGL, maybe the display is a must have.

Best Regards,
Rudolfs Bundulis
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