Posted by Xerxes Rånby on Jul 17, 2015; 2:39pm
URL: https://forum.jogamp.org/Processing-P3D-Raspberry-Pi-OpenGL-doesn-t-work-tp4034928p4034931.html

http://labb.zafena.se/jogamp/vc4/video20150717_163245117.mp4 video of Processing 3 running the RGB Cube demo using the Broadcom OpenGL ES 2 driver using NEWT and dispmanx

there was some odd heuristics in the processing 3 codebase that prevented the animator to start, the following trick to replace all use of FPSAnimator with Animator and forcing the Animator to start when the window became visible made it work:
https://github.com/xranby/processing/commit/f9d170b33bf727d881a0de2e796f9a1e50b5b0b4