Engine; opengl render

TheGame/renderwidget.cpp

     _device->lookAt(Vector3D(radius * cos(rad), 5.0f, radius * sin(rad)),
                    Vector3D(0.0f, 0.0f, 0.0f));
     _engine->draw();
-//    device->preDraw();
-
-
-
-
 
     drawAxes();
-
-//    device->postDraw();
 }
 
 void RenderWidget::resizeGL(int width, int height)