Posted by hharrison on Oct 03, 2012; 5:13pm
URL: https://forum.jogamp.org/Using-Java-3D-scene-tree-in-a-headless-environment-tp4026340p4026341.html

It boils down to Java3d relying on AWT for some of its lifetime...which doesn't work so well in a headless environment.

Getting rid of the AWT dependency would have a lot of benefits, which at this point is writing a replacement for Canvas3D
that is not an AWT object.  I could see Java3D working without the AWT dependency, but it would take quite a bit of work.