unity摄像机的切换

方法一：

camera1.rect  = new Rect(0,0,0,0);camera2.rect  = new Rect(0,0,1,1);//////////////////////camera1.rect  = new Rect(0,0,1,1);camera2.rect  = new Rect(0,0,0,0);

方法四：

改camera的culling Mask