Airplay Dual Display

void Start()
{
// GUI is rendered with last camera.
// As we want it to end up in the main screen, make sure main camera is the last one drawn.
extCam.depth = camera.depth - 1;

camera.SetTargetBuffers(Display.main.colorBuffer, Display.main.depthBuffer);
extCam.enabled = false;
}

void Update()
{...​