Save opengl in batch

ROOT
#1

Hi,

I’m trying to produce an opengl graph (via h3->Draw(“glbox”) ). While it is possible to do a save in interactive mode, it doesn’t work in batch mode. The .png picture represents an empty canvas.
Is it a bug or a feature ? Is there any way to save graphs made that way ?

Cheers

Damir

#2

It is not implemented. Whereas in interactive mode the picture is created from the image in the pad, in batch mode the output is created via a special driver : TImageDump (a bit like for PS).

#3

[quote]Hi,

I’m trying to produce an opengl graph (via h3->Draw(“glbox”) ). While it is possible to do a save in interactive mode, it doesn’t work in batch mode. The .png picture represents an empty canvas.
Is it a bug or a feature ? Is there any way to save graphs made that way ?

Cheers

Damir[/quote]

Hi, Damir. AFAIK our OpenGL code does not work in off-screen mode. It can be done using Mesa specific extensions, but this will work (???) only with mesa.

#4

Ok, so if I understand, there is no simple way to do it. Maybe an X11 server which is “off screen” ?
What is this “mesa” method ?

Cheers

Damir