截圖3種方法

方法1 Application.CaptureScreenshot()

Application.CaptureScreenshot(screencapture.png)
 
            if(Application.platform==RuntimePlatform.Android || Application.platform==RuntimePlatform.IPhonePlayer)  
 
                 imagePath=Application.persistentDataPath;  
 
            else if(Application.platform==RuntimePlatform.WindowsPlayer)  
 
                 imagePath=Application.dataPath;  
 
           else if(Application.platform==RuntimePlatform.WindowsEditor)
 
            {  
 
                 imagePath=Application.dataPath;  
 
                 imagePath= imagePath.Replace("/Assets",null);  
 
             }   
 
            imagePath = imagePath + "/screencapture.png";

方法2 Texture2d類下的相關(guān)方法，通過(guò)讀取屏幕緩存然后轉(zhuǎn)化為Png圖片進(jìn)行截圖

/// <summary>  
/// Captures the screenshot2.  
/// </summary>  
/// <returns>The screenshot2.</returns>  
/// <param name="rect">Rect.截圖的區(qū)域，左下角為o點(diǎn)</param>  
Texture2D CaptureScreenshot2(Rect rect)   
{  
    // 先創(chuàng)建一個(gè)的空紋理，大小可根據(jù)實(shí)現(xiàn)需要來(lái)設(shè)置  
    Texture2D screenShot = new Texture2D((int)rect.width, (int)rect.height, TextureFormat.RGB24,false);  
  
    // 讀取屏幕像素信息并存儲(chǔ)為紋理數(shù)據(jù)，  
    screenShot.ReadPixels(rect, 0, 0);  
    screenShot.Apply();  
  
    // 然后將這些紋理數(shù)據(jù)，成一個(gè)png圖片文件  
    byte[] bytes = screenShot.EncodeToPNG();  
    string filename = Application.dataPath + "/Screenshot.png";  
    System.IO.File.WriteAllBytes(filename, bytes);  
    Debug.Log(string.Format("截屏了一張圖片: {0}", filename));  
  
    // 最后，我返回這個(gè)Texture2d對(duì)象，這樣我們直接，所這個(gè)截圖圖示在游戲中，當(dāng)然這個(gè)根據(jù)自己的需求的。  
    return screenShot;  
} 

方法3 用RenderTexture針對(duì)某個(gè)相機(jī)進(jìn)行截圖

    /// <summary>  
    /// 對(duì)相機(jī)截圖。   
    /// </summary>  
    /// <returns>The screenshot2.</returns>  
    /// <param name="camera">Camera.要被截屏的相機(jī)</param>  
    /// <param name="rect">Rect.截屏的區(qū)域</param>  
    Texture2D CaptureCamera(Camera camera, Rect rect)   
    {  
        // 創(chuàng)建一個(gè)RenderTexture對(duì)象  
        RenderTexture rt = new RenderTexture((int)rect.width, (int)rect.height, 0);  
        // 臨時(shí)設(shè)置相關(guān)相機(jī)的targetTexture為rt, 并手動(dòng)渲染相關(guān)相機(jī)  
        camera.targetTexture = rt;  
        camera.Render();  
            //ps: --- 如果這樣加上第二個(gè)相機(jī)，可以實(shí)現(xiàn)只截圖某幾個(gè)指定的相機(jī)一起看到的圖像。  
            //ps: camera2.targetTexture = rt;  
            //ps: camera2.Render();  
            //ps: -------------------------------------------------------------------  
      
        // 激活這個(gè)rt, 并從中中讀取像素。  
        RenderTexture.active = rt;  
        Texture2D screenShot = new Texture2D((int)rect.width, (int)rect.height, TextureFormat.RGB24,false);  
        screenShot.ReadPixels(rect, 0, 0);// 注：這個(gè)時(shí)候，它是從RenderTexture.active中讀取像素  
        screenShot.Apply();  
      
        // 重置相關(guān)參數(shù)，以使用camera繼續(xù)在屏幕上顯示  
        camera.targetTexture = null;  
            //ps: camera2.targetTexture = null;  
        RenderTexture.active = null; // JC: added to avoid errors  
        GameObject.Destroy(rt);  
        // 最后將這些紋理數(shù)據(jù)，成一個(gè)png圖片文件  
        byte[] bytes = screenShot.EncodeToPNG();  
        string filename = Application.dataPath + "/Screenshot.png";  
        System.IO.File.WriteAllBytes(filename, bytes);  
        Debug.Log(string.Format("截屏了一張照片: {0}", filename));  
          
        return screenShot;  
    }