对相机所看的视角截屏保存为图片：

1 using UnityEngine; 2 using System.Collections; 3 using UnityEngine.UI; 4 /// 
 5 /// 对相机截图 6 /// 
 7 public class Jietu : MonoBehaviour { 8  9     public Camera camera;10     Texture2D tex;11     void Start()12     {13             tex= CaptureCamera(camera,new Rect(0,0,Screen.width,Screen.height));14             GameObject.Find("Canvas/Image").GetComponent().sprite=Sprite.Create(tex, new Rect(0, 0,tex.width,tex.height), new Vector2(0.5f, 0.5f));15     }16     Texture2D CaptureCamera(Camera cam,Rect rect)17     {18         //创建一个RenderTexture对象19         RenderTexture rt=new RenderTexture ((int)rect.width,(int)rect.height,0);20         //临时设置相关相机的targetTexture为rt，并手动渲染相关相机21         cam.targetTexture=rt;22         cam.Render();23         //ps: --- 如果这样加上第二个相机，可以实现只截图某几个指定的相机一起看到的图像。  24         //ps: camera2.targetTexture = rt;  25         //ps: camera2.Render();  26         //ps: -------------------------------------------------------------------  27 28         // 激活这个rt, 并从中中读取像素。  29         RenderTexture.active = rt;  30         Texture2D screenShot = new Texture2D((int)rect.width, (int)rect.height, TextureFormat.RGB24,false);  31         screenShot.ReadPixels(rect, 0, 0);// 注：这个时候，它是从RenderTexture.active中读取像素  32         screenShot.Apply();  33 34         // 重置相关参数，以使用camera继续在屏幕上显示  35         camera.targetTexture = null;  36         //ps: camera2.targetTexture = null;  37         RenderTexture.active = null; // JC: added to avoid errors  38         GameObject.Destroy(rt);  39         // 最后将这些纹理数据，成一个png图片文件  40         byte[] bytes = screenShot.EncodeToPNG();  41         string filename = Application.dataPath + "/Screenshot.png";  42         System.IO.File.WriteAllBytes(filename, bytes);  43         Debug.Log(string.Format("截了一张照片: {0}", filename));  44         return screenShot;  45     }46 }

转载一下，以备后用。