Posted by gouessej on Dec 19, 2013; 6:18pm
URL: https://forum.jogamp.org/NewtCanvasSWT-problem-tp4030973p4030977.html

I'm glad to see that my suggestion was right.

You need a current CGL context to make that call:
https://developer.apple.com/library/mac/documentation/graphicsimaging/reference/cgl_opengl/Reference/reference.html

I think this call should be done later, when the canvas is realized.