Rendering on machines without displays (eg. server)

[sibocw]

If you are using a machine without a display (e.g. server, cluster, remotely accessed workstation), you will need to change the renderer to EGL. See this section of the installation instruction for details. If it still doesn't work, check this link for further information on dependencies.

If you encounter FatalError: gladLoadGL error upon calling .render(), this is likely the reason.