Posted by gouessej on Feb 18, 2013; 10:59am
URL: https://forum.jogamp.org/JOGL-2-0-OpenGL-OpenGL-ES-backend-for-LibGDX-tp4027689p4028251.html

Maybe you'll have to set the offscreen flag of GLCapabilities to true but I might be useless. I know it is necessary with Ardor3D, I modified the helper to allow to do that some weeks ago.