"Basic" unity captures only scene content when capturing

In the game screenshot, we need to intercept only the scene content, not including the Ngui control, implementing the script as follows (only the contents of Gamecamera and Bgcamera are intercepted):

usingUnityengine;usingSystem.Collections; Public classCapturetest:monobehaviour { PublicCamera Gamecamera;  PublicCamera Bgcamera; //Use this for initialization    voidStart () {}//Update is called once per frame    voidUpdate () {}voidOnClick () {rect rect=NewRect (0,0, Screen.width,screen.height);    Capturecamera (Gamecamera, Bgcamera, rect); } texture2d Capturecamera (Camera gamecamera,camera bgcamera, rect rect) {//Create a Rendertexture objectRendertexture RT =NewRendertexture ((int) Rect.width, (int) Rect.height,0); //set up a targettexture of two cameraGamecamera.targettexture =RT; Bgcamera.targettexture=RT; //Note the rendering orderBgcamera.render ();           Gamecamera.render (); //activates the RT and reads the pixels from it. Rendertexture.active =RT; Texture2d screenshot=NewTexture2d ((int) Rect.width, (int) Rect.height, Textureformat.rgb24,false); Screenshot.readpixels (Rect,0,0);//Note: This time, it is reading pixels from the rendertexture.activescreenshot.apply (); //Reset the relevant parameters to use the camera to continue to display on the screenGamecamera.targettexture =NULL; Bgcamera.targettexture=NULL; //ps:camera2.targetTexture = null;Rendertexture.active =NULL;//jc:added to avoid errorsGameobject.destroy (RT); //Finally, these texture data into a PNG image file        byte[] bytes =screenshot.encodetopng (); stringfilename = Application.datapath +"/screenshot.png";        System.IO.File.WriteAllBytes (filename, bytes); Debug.Log (string. Format ("screenshot of a picture: {0}", filename)); returnscreenshot; }}

"Base" Unity only captures scene content