GL.glClear(GL.GL_COLOR_BUFFER_BIT | GL.GL_DEPTH_BUFFER_BIT)
    GL.glLoadIdentity()
    GL.glPushMatrix()
    GL.glLoadIdentity()
    GL.glViewport(0, 0, SCREEN_WIDTH, SCREEN_HEIGHT)
    GL.glMatrixMode(GL.GL_PROJECTION)
    GL.glLoadIdentity()
    GL.glPushMatrix()
    GL.glOrtho(0, SCREEN_WIDTH, 0, SCREEN_HEIGHT, 1, -1)
    GL.glMatrixMode(GL.GL_MODELVIEW)
    GL.glLoadIdentity()
    GL.glTranslatef(.1, .1, .1)

    GL.glColor4f(1, 1, 1, .6)
    GL.glBegin(GL.GL_QUADS)
    GL.glVertex3f(-1, 0, -1)
    GL.glVertex3f(1, 0, -1)
    GL.glVertex3f(1, 0, 1)
    GL.glVertex3f(-1, 0, 1)
    GL.glVertex3f(0, -1, -1)
    GL.glVertex3f(0, 1, -1)
    GL.glVertex3f(0, 1, 1)
    GL.glVertex3f(0, -1, 1)
    GL.glVertex3f(-1, -1, 0)
    GL.glVertex3f(1, -1, 0)
    GL.glVertex3f(1, 1, 0)
    GL.glVertex3f(-1, 1, 0)
    GL.glEnd()

    pygame.display.flip()
    GL.glMatrixMode(GL.GL_PROJECTION)
    GL.glPopMatrix()
    GL.glMatrixMode(GL.GL_MODELVIEW)
    GL.glPopMatrix()
    print "Flip!"