调用WebCam设备，只需将脚本绑定到带有Render组件的物体上，简单的调用webCam的代码如下：

using UnityEngine;
using System.Collections;

public class camera : MonoBehaviour {
	public string Mydevice;
	WebCamTexture tex;

	// Use this for initialization
	IEnumerator Start () {
		yield return Application.RequestUserAuthorization (UserAuthorization.WebCam);
		if(Application.HasUserAuthorization(UserAuthorization.WebCam))
		{
			WebCamDevice[] devices = WebCamTexture.devices;
			Mydevice = devices[0].name;
			tex = new WebCamTexture(Mydevice, 400, 300, 12);
			renderer.material.mainTexture = tex;
			tex.Play();
		}
	}
	
	// Update is called once per frame
	void Update () {
	
	}
}

unity3d笔记（5）——调用Webcam设备