Posted by elect on Mar 22, 2017; 9:52pm
URL: https://forum.jogamp.org/Reading-from-PBO-fails-tp4037767p4037817.html

adi wrote

Thanks.
Its not a big problem. For that, i use then framebuffers for reading
such parts from GPU.
Time is here not a factor.

Ok, but it would be interesting anyway to find out what was the problem

So I assume you didn't get any gl error/warning..