ReadPixels doesn't work in flash for scrennshot. What else can I use?

Hi there,

I'm trying to grab screenshot in application exported to flash.
In editor Read Pixels works fine. But after publish to swf I have gray picture.
Below you will find my code.
If this method is not supported in flash, how I can make a screenshot in application exported to flash?

Thanks in advance.

Code (csharp):

1.  
2. function Start () {
3.     MakeScreenshot();
4. }
5.  
6. function MakeScreenshot() {
7.  
8.     // We should only read the screen after all rendering is complete
9.     yield WaitForEndOfFrame ();
10.  
11.     // Create a texture the size of the screen, RGB24 format
12.     var width = Screen.width;
13.     var height = Screen.height;
14.     tex = new Texture2D ( width, height, TextureFormat.RGB24, false );
15.     // Read screen contents into the texture
16.     tex.ReadPixels ( Rect(0, 0, width, height), 0, 0 );
17.     tex.Apply ();
18.     // just for test I put it to GUITexture on screen
19.         GameObject.Find("shot-preview").GetComponent(GUITexture).texture = tex;
20.  
21.     // Encode texture into PNG
22.     bytes = tex.EncodeToPNG ();
23.        
24.     //Destroy ( tex );
25.  
26.     */
27.    
28.  
29. }

I hace also tried use flash native command in this way:

Code (csharp):

1.  
2. var tex = new Texture2D ( width, height, TextureFormat.RGB24, false );
3.  
4. ActionScript.Statement("Stage3D.context3D.drawToBitmapData{tex: {0}})", tex);
5.  

But still o effect.
Note that I'm newbie in ActionScript

Any ideas?

 

Doesn't work for me either, and neither does RenderTexture. Some workaround would be much appreciated.