Unity 字体描边

private void MakeStroke(Rect position,string txtString,Color txtColor,Color outlineColor,int outlineWidth )

 {

     position.y-= outlineWidth;

     GUI.color=outlineColor;

     GUI.Label(position, txtString);

     position.y+=outlineWidth*2;

     GUI.Label(position, txtString);

     position.y-=outlineWidth;

     position.x-=outlineWidth;

     GUI.Label(position, txtString);

     position.x+=outlineWidth*2;

     GUI.Label(position, txtString);

     position.x-=outlineWidth;

     GUI.color=txtColor;

     GUI.Label(position, txtString);

 }