Posted by Vasilij on Feb 13, 2014; 10:11am
URL: https://forum.jogamp.org/Shader-does-not-accept-the-Parameters-tp4031551p4031565.html

Yes, i had this idea too.
I have added "#version 300 es" at the beginning of Shaders.
On PC there is an Error: "Incorrect GLSL version for token es: 300"

Not a Problem, because the RasPi can compile Shaders without Errors. But the int-Values are still -1.