Posted by gouessej on Dec 31, 2013; 10:29am
URL: https://forum.jogamp.org/picking-tp4031052p4031094.html

Actually, it is possible to get a speedup by implementing the picking in shaders but this algorithm is more complicated than the one ul suggests:
http://www.hindawi.com/journals/ijcgt/2009/730894/

Edit.: This is a bad example of picking in GLSL shaders:
http://www.opengl-tutorial.org/miscellaneous/clicking-on-objects/picking-with-an-opengl-hack/