Posted by gouessej on Aug 13, 2018; 10:57am
URL: https://forum.jogamp.org/How-do-I-load-texture-array-in-jogl-tp4039107p4039114.html

You should test those PNG files:
https://github.com/sgothel/jogl/tree/master/src/test/com/jogamp/opengl/test/junit/jogl/util/texture

They are guaranteed to work with JOGL as we use them in our unit tests. If they don't work in your source code, it will mean that the problem will have to be searched in it and not in JOGL.