unity的小功能，實現截屏

大致分三種：

1.針對指定的相機進行截屏

public Texture2D CaptureScreen(Camera came, Rect r) {RenderTexture rt = new RenderTexture((int)r.width, (int)r.height, 0);came.targetTexture = rt;came.Render();RenderTexture.active = rt;Texture2D screenShot = new Texture2D((int)r.width, (int)r.height, TextureFormat.RGB24, false);screenShot.ReadPixels(r, 0, 0);screenShot.Apply();came.targetTexture = null;RenderTexture.active = null;GameObject.Destroy(rt);byte[] bytes = screenShot.EncodeToPNG();string filename = Application.streamingAssetsPath + "/ScreenShot.png";System.IO.File.WriteAllBytes(filename, bytes);return screenShot; }

2.自定義截圖的大小（包括UI）

public Texture2D CaptureScreen(Rect rect) {Texture2D screenShot = new Texture2D((int)rect.width, (int)rect.height, TextureFormat.RGB24, false);screenShot.ReadPixels(rect, 0, 0);screenShot.Apply();byte[] bytes = screenShot.EncodeToPNG();string filename = Application.streamingAssetsPath + "/ScreenShot.png";System.IO.File.WriteAllBytes(filename, bytes);return screenShot;}

2.截取屏幕全屏

public void CapruerScreen() {// Application.CaptureScreenshot(Application.persistentDataPath + "ScreenShot.png", 0);//過時的方法ScreenCapture.CaptureScreenshot( Application.streamingAssetsPath + "/ScreenShot.png", 0); }

總結

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