Teste JOGL

package jbdb;

import java.awt.Frame;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;

import javax.media.opengl.GL;
import javax.media.opengl.GL2;
import javax.media.opengl.GLAutoDrawable;
import javax.media.opengl.GLCapabilities;
import javax.media.opengl.GLEventListener;
import javax.media.opengl.GLProfile;
import javax.media.opengl.awt.GLCanvas;
import javax.media.opengl.glu.GLU;
import javax.swing.JFrame;


//Clase que vai criar um triângulo
class Triangle {
    protected static void setup( GL2 gl2, int width, int height ) {
        gl2.glMatrixMode( GL2.GL_PROJECTION );
        gl2.glLoadIdentity();

        // as coordenadas começam no canto inferior esquerdo,e largura = tam janela
        GLU glu = new GLU();
        glu.gluOrtho2D( 0.0f, width, 0.0f, height );

        gl2.glMatrixMode( GL2.GL_MODELVIEW );
        gl2.glLoadIdentity();

        gl2.glViewport( 0, 0, width, height );
    }

    protected static void render( GL2 gl2, int width, int height ) {
        gl2.glClear( GL.GL_COLOR_BUFFER_BIT );

        // desenha o triângulo
        gl2.glLoadIdentity();
        gl2.glBegin( GL.GL_TRIANGLES ); //pra linhas tem que usar lines
        gl2.glColor3f( 1, 0, 0 );
        gl2.glVertex2f( 0, 0 );
        gl2.glColor3f( 0, 1, 0 );
        gl2.glVertex2f( width, 0 );
        gl2.glColor3f( 0, 0, 1 );
        gl2.glVertex2f( width / 2, height );
        gl2.glEnd();
    }
}

public class teste {



        public static void main(String[] args ) {
            GLProfile glprofile = GLProfile.getDefault();
            GLCapabilities glcapabilities = new GLCapabilities( glprofile );
            final GLCanvas glcanvas = new GLCanvas( glcapabilities );

            glcanvas.addGLEventListener( new GLEventListener() {


                //essas são as funções que vc tem que dar override
                //é tipo aquelas com c++ que a gente usa que chama outras funções
                @Override
                public void reshape( GLAutoDrawable glautodrawable, int x, int y, int width, int height ) {
                    Triangle.setup( glautodrawable.getGL().getGL2(), width, height );
                }

                @Override
                public void init( GLAutoDrawable glautodrawable ) {
                }

                @Override
                public void dispose( GLAutoDrawable glautodrawable ) {
                }

                @Override
                public void display( GLAutoDrawable glautodrawable ) {
                    Triangle.render( glautodrawable.getGL().getGL2(), glautodrawable.getWidth(), glautodrawable.getHeight() );
                }
            });
            //Cria uma janelinha
            final JFrame frame = new JFrame( "Desenhar triângulo" );
            frame.add( glcanvas );
            //Quando fechar a janelinha destroi o desenho pra não ficar na memoria
            frame.addWindowListener( new WindowAdapter() {
                public void windowClosing(WindowEvent windowevent ) {
                    frame.remove( glcanvas );
                    frame.dispose();
                    System.exit( 0 );
                }
            });

            frame.setSize( 640, 480 );
            frame.setVisible( true );
        }


}