Why are objects red?

OpenGL Development JOGL Development
#1

I created a small test app to see if I wanted to start using JOGL and for some reason my cube and triangle are red. Even if specify a color for them, they stay red. I am wondering if I am doing something wrong.


package com.gthought.swing.gl;

import net.java.games.jogl.*;

import javax.swing.*;
import java.awt.*;

public class JOGLTest extends JFrame
{

    public JOGLTest()
    {
        super("JOGL Test");
        this.setDefaultCloseOperation( JFrame.DISPOSE_ON_CLOSE );
        GLCanvas canvas = GLDrawableFactory.getFactory().createGLCanvas( new GLCapabilities());
        canvas.addGLEventListener( new MyCanvas());

        this.getContentPane().setLayout( new BorderLayout());
        this.getContentPane().add( canvas, BorderLayout.CENTER);
        JPanel buttonPanel = new JPanel();
        JButton button1 = new JButton("Add");
        buttonPanel.setLayout( new FlowLayout(FlowLayout.LEADING) );
        buttonPanel.add(button1);
        this.getContentPane().add( buttonPanel, BorderLayout.SOUTH);

        this.setBounds( 5, 5, 640, 480);

    }

    public static void main(String[] args)
    {
        new JOGLTest().setVisible( true );
    }


    class MyCanvas implements GLEventListener
    {
        public void display(GLDrawable glDraw)
        {
            GL gl = glDraw.getGL();

            gl.glClear(GL.GL_COLOR_BUFFER_BIT | GL.GL_DEPTH_BUFFER_BIT);
            gl.glLoadIdentity();
            gl.glTranslatef(-1.5f,0.0f,-6.0f);
            gl.glBegin(GL.GL_TRIANGLES);
                gl.glVertex3f( 0.0f, 1.0f, 0.0f);
                gl.glVertex3f(-1.0f,-1.0f, 0.0f);
                gl.glVertex3f( 1.0f,-1.0f, 0.0f);
            gl.glEnd();
            gl.glTranslatef(3.0f,0.0f,0.0f);
            gl.glBegin(GL.GL_QUADS);
                gl.glVertex3f(-1.0f, 1.0f, 0.0f);
                gl.glVertex3f( 1.0f, 1.0f, 0.0f);
                gl.glVertex3f( 1.0f,-1.0f, 0.0f);
                gl.glVertex3f(-1.0f,-1.0f, 0.0f);
            gl.glEnd();


        }

    public void init(GLDrawable glDraw)
    {
        GL gl = glDraw.getGL();

        gl.glShadeModel(GL.GL_SMOOTH);
        gl.glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
        gl.glClearDepth(1.0f);
        gl.glEnable(GL.GL_DEPTH_TEST);
        gl.glDepthFunc(GL.GL_LEQUAL);
        gl.glHint(gl.GL_PERSPECTIVE_CORRECTION_HINT, GL.GL_NICEST);


    }

    public void reshape(GLDrawable glDraw, int x, int y, int w, int h)
    {
        GL gl = glDraw.getGL();
        GLU glu = glDraw.getGLU();

        gl.glViewport     ( 0, 0, w, h );
        gl.glMatrixMode   ( GL.GL_PROJECTION );
        gl.glLoadIdentity ( );
        if ( h==0 )
        {
             glu.gluPerspective ( 80, ( float ) w, 1.0, 5000.0 );
        }
        else
        {
            glu.gluPerspective ( 80, ( float ) w / ( float ) h, 1.0, 5000.0 );
        }
        gl.glMatrixMode   ( GL.GL_MODELVIEW );
        gl.glLoadIdentity ( );
    }

    public void displayChanged(GLDrawable glDraw, boolean modeChanged, boolean deviceChanged) {}

    }
}

Thanks for any help.

#2

Well, it just has something to do with the video card on my work PC. I ran the same code on my laptop and everything works fine. I’ve had other problems with OpenGL programs on the PC as well, so it’s really no surprise.

#3

Which OS did you have? If you have windows xp you should download OpenGL driver, because winxp not support it. If you have other OS solution could be the same.

Cheers,
Gambit