unity截屏功能实现

 

//第一个参数是相机截屏位置,第二个参数为截屏大小(像素)

 Rect s = new Rect(new Vector2(0, 0), new Vector2(1024, 1024));

 public void CapruerScreen()//全屏截图
    {
        // Application.CaptureScreenshot(Application.persistentDataPath + "ScreenShot.png", 0);//过时的方法
        ScreenCapture.CaptureScreenshot(Application.streamingAssetsPath + "/ScreenShot.png", 0);
    }
 

public Texture2D CaptureScreen(Camera came, Rect r)//指定相机,相机正中间开始截图
    {
        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;
    }

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