Posted by Wade Walker on May 04, 2012; 12:59am
URL: https://forum.jogamp.org/Problems-with-gluUnProject-tp3954975p3960932.html

Hmm, I looked at the JOGL 1 source vs. the JOGL 2 source, and the old Project.__gluMultMatricesd() is different from the new FloatUtil.multMatrixf(). The old one is a nested loop, where the new one is unrolled, and I can't be certain just by visual inspection that they're equivalent. Let me do a test program tomorrow to compare their outputs to see for sure -- gotta go to bed right now unfortunately :)