Posted by Wade Walker on Feb 17, 2011; 1:10am
URL: https://forum.jogamp.org/New-tutorial-on-AWT-SWT-Swing-GLJPanel-GLCanvas-tp2363921p2514653.html

Does it flicker white? If so, its background paint event may be getting triggered somehow, or part of its area may be getting invalidated by events coming from the FPSAnimator. You might make sure that none of the panels overlap, and that no events are getting sent to a parent which might cause children to be invalidated (assuming your panels are siblings).

Perhaps one of the other guys with more Swing experience has a clever suggestion -- I've mostly used SWT, so I'm not as familiar with Swing