OpenGL with export display

[elimac]

Hello,
I use a computer without X server, and I want to run Qt-4.8.4 OpenGL demos and examples while exporting the display on another computer running an X server with OpenGL 4.4.

I tested these demos :
demos/boxes
demos/qtdemo
demos/sub-attaq
demos/deform

and I also tested all the examples/opengl programs :
2dpainting, framebufferobject, framebufferobject2, grabber, hellogl, overpainting, pbuffers, pbuffers2, samplebuffers and textures.

Only the grabber example worked. The other ones either crashed, were totally empty or displayed only non-OpenGL elements.
The boxes demo displayed an error MessageBox saying that I needed OpenGL 1.5 to run it, whereas the distant machine has OpenGL 4.0.

Is this normal ? Is there a way to use OpenGL with Qt on a remote display ?

Thank you

[SGaist]

Hi and welcome to devnet,

For this use case, I'd recommend asking this on the interest mailing list you'll find there Qt's developers/maintainers (this forum is more user oriented)

[billconan]

I'm kinda surprised that there was one example worked. it seems to me that without x windows, opengl driver should not work at all.

egl can support offline rendering, but it's not supported by nvidia driver I think.

you can use mesa to do offline rendering and send it to remote computer in form of a video. and display the video on the other side.

I knew someone did a remote opengl es on raspberry pi, can't find the link anymore.

basically he sends opengl es commands via tcp.

[elimac]

X runs on the distant computer, so I think everything should work... Moreover, some OpenGL without Qt applications work, so OpenGL does not seem to be the problem....