public void glSetup2D() {
		initGL();
		GL11.glMatrixMode(GL11.GL_PROJECTION);
		GL11.glLoadIdentity();
		GL11.glOrtho(0.0, this.window.getOrthoWidth(), this.window.getOrthoHeight(), 0.0, orthoZNear, orthoZFar);

		GL11.glMatrixMode(GL11.GL_MODELVIEW);
		GL11.glLoadIdentity();

		GL11.glClear(GL11.GL_DEPTH_BUFFER_BIT | GL11.GL_STENCIL_BUFFER_BIT);
	}