int enable_lighting=#e1:0#;

GLfloat light_model_ambient[]={#f0:0.2:1#,#f0:0.2:1#,#f0:0.2:1#};

glEnable(GL_LIGHT0);

if (enable_lighting)
  glEnable(GL_LIGHTING);
else
  glDisable(GL_LIGHTING);

glLightModelfv(GL_LIGHT_MODEL_AMBIENT,light_model_ambient);
glLightModelf(GL_LIGHT_MODEL_LOCAL_VIEWER,#e0:1#);
glLightModelf(GL_LIGHT_MODEL_TWO_SIDE,#e0:1#);