Posted by jmaasing on Mar 10, 2017; 9:34am
URL: https://forum.jogamp.org/Understanding-issue-with-automatic-buffer-swapping-tp4037728p4037761.html

While not directly related to your viewport question this is how I "sidestep" the issue. I render each camera to a texture and then I composite the textures into a single texture that is finally the one I render to screen. In this way I can composite the camera views on top of each others et c.