Return None when calling vis.get_render_option()

[HaiyongJiang]

Dear authors,

I encountered some errors when running "headless_rendering.py". The following is the log information. I am not sure what is the potential problem. Can you kindly help me figure it out? Thank you.

Reading PLY: [========================================] 100%
Customized visualization playing a camera trajectory. Ctrl+z to terminate
GLFW Error: X11: Failed to open display localhost:13.0
Failed to initialize GLFW
Traceback (most recent call last):
File "headless_rendering.py", line 61, in
custom_draw_geometry_with_camera_trajectory(pcd)
File "headless_rendering.py", line 52, in custom_draw_geometry_with_camera_trajectory
vis.get_render_option().load_from_json("../../TestData/renderoption.json")
AttributeError: 'NoneType' object has no attribute 'load_from_json'

[HTLife]

Any progress on this issue?

[mightypirate1]

I am also encountering this error trying to run the second code snippet from the documentation

Any ideas on how to troubleshoot?

[pvarvak]

This should be resolved if following updated instructions from master (after #1695 was merged). When using OSMesa there should not be any errors like "Failed to open display localhost:*", that would indicate OSMesa is not being used and display is being used. If there are still issues please compile master and post output of bin/GLInfo and your environment.