gl.glEnable(GL2.GL_POLYGON_OFFSET_POINT);
gl.glDisable(GL2.GL_POLYGON_OFFSET_LINE);
gl.glDisable(GL.GL_POLYGON_OFFSET_FILL);
break;
case PolygonAttributes.POLYGON_LINE:
gl.glEnable(GL2.GL_POLYGON_OFFSET_LINE);
gl.glDisable(GL2.GL_POLYGON_OFFSET_POINT);
gl.glDisable(GL.GL_POLYGON_OFFSET_FILL);
break;
case PolygonAttributes.POLYGON_FILL:
gl.glEnable(GL.GL_POLYGON_OFFSET_FILL);