Posted by jmaasing on Sep 27, 2014; 3:44pm
URL: https://forum.jogamp.org/Seeking-Help-with-OpenGL-Depth-Buffer-Issue-tp4033219p4033220.html

At a first glance the code you show looks ok. But we don't see the vertex definition or the shader code so it's hard to say if you even write different Z-values or if they all are the same when gl_Position is set in the shader.