Posted by Wade Walker on
URL: https://forum.jogamp.org/blank-screen-by-shader-render-tp3848071p3869605.html

Sorry to not give you more specific advice, but I'd say to just go through every GL function call carefully, checking all arguments for type, value, length, et cetera. Usually I check my code against examples online to make sure I'm using each function correctly.

If it makes you feel any better, I think every GL program I've ever written comes up with a blank screen initially  But if you persevere, eventually it will work.