Card supports OpenGL 4.1 but no GL4 implementation on thread?

Question

When I run my test JOGL app, it says that I only have GL2 available on the thread when my system supports up to OpenGL 4.1 according to the OpenGl Extensions Vi

Answer 1

It turns out that OSX falls back to OpenGL 2.1 so you need to set the core profile yourself.

$ glxinfo | grep OpenGL
OpenGL vendor string: ATI Technologies Inc.
OpenGL renderer string: AMD Radeon R9 M370X OpenGL Engine
OpenGL version string: 2.1 ATI-1.42.15
OpenGL shading language version string: 1.20

I was able to set the core version (OpenGL 4.1) by passing GLCapabilities into the GLCanvas constructor.

Here is the new, fixed constructor:

public Code() {
    setTitle("Chapter 2 - program1");
    setSize(600, 400);
    setLocation(200, 200);

    // This was the fix
    GLProfile glp = GLProfile.getMaxProgrammableCore(true);
    GLCapabilities caps = new GLCapabilities(glp);
    myCanvas = new GLCanvas(caps);

    myCanvas.addGLEventListener(this);
    this.add(myCanvas);
    this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    setVisible(true);
}