code: protected void initGL() {
  		GL11.glEnable(GL11.GL_TEXTURE_2D);
  		GL11.glShadeModel(GL11.GL_SMOOTH);        
  		GL11.glDisable(GL11.GL_DEPTH_TEST);
  		GL11.glDisable(GL11.GL_LIGHTING);                    
          
  		GL11.glClearColor(0.0f, 0.0f, 0.0f, 0.0f);                
          GL11.glClearDepth(1);                                       
          
          GL11.glEnable(GL11.GL_BLEND);
          GL11.glBlendFunc(GL11.GL_SRC_ALPHA, GL11.GL_ONE_MINUS_SRC_ALPHA);
          
          GL11.glViewport(0,0,screenWidth,screenHeight);
  		GL11.glMatrixMode(GL11.GL_MODELVIEW);               
  		GL11.glLoadIdentity();
  		
  		enterOrtho();
  	}
docs: Initialise the GL context