import java.awt.*;
import java.awt.event.*;
import com.jogamp.opengl.awt.GLCanvas;
import com.jogamp.opengl.GLProfile;
import com.jogamp.opengl.GLCapabilities;
import com.jogamp.opengl.GLAutoDrawable;
import com.jogamp.opengl.GLEventListener;
import com.jogamp.opengl.util.glsl.ShaderCode;
import com.jogamp.opengl.GL2ES2;
import com.jogamp.opengl.util.glsl.ShaderProgram;

public class MyProgram {
	public MyProgram () {
		Frame f = new Frame ("Test frame");
		f.addWindowListener (new MyWindowAdapter ());
        GLProfile glProfile = GLProfile.get (GLProfile.GL2ES2);
        GLCapabilities glCapabilities = new GLCapabilities (glProfile);
        GLCanvas glCanvas = new GLCanvas (glCapabilities);
		glCanvas.addGLEventListener (new MyGLEventListener ());
		f.add (glCanvas);
		f.setSize (300, 300);
		f.setVisible (true);
	}

	public class MyWindowAdapter extends WindowAdapter {
		public void windowClosing (WindowEvent e) {
			System.exit (0);
		}
	}

	public class MyGLEventListener implements GLEventListener {
		public void display (GLAutoDrawable drawable) {
			System.out.println ("display ()");
			GL2ES2 gl = drawable.getGL ().getGL2ES2();
			ShaderCode fs;
			String[][] fsCode = {{"void main (void) { gl_FragColor = vec4 (1.0, 0.0, 0.0, 1.0); }"}}; // Quand on utilise GL2ES2 => 'gl_FragColor' : undeclared identifier 
			fs = new ShaderCode (GL2ES2.GL_FRAGMENT_SHADER, 1, fsCode);
			fs.compile (gl, System.out);
		}
		public void dispose (GLAutoDrawable drawable) {
			System.out.println ("dispose ()");
		}
		public void init (GLAutoDrawable drawable) {
			System.out.println ("init ()");
		}
		public void reshape (GLAutoDrawable drawable, int x, int y, int width, int height) {
			System.out.println ("reshape ()");
		}
	}
}