title: Convert RenderTexture to Texture2D
body: <p>I need to save a RenderTexture object to a .png file that will then be used as a texture to wrap about a 3D object. My problem is right now I can't save a RenderTexture object using EncodeToPNG() because RenderTexture doesn't include that method. How can I convert a RenderTexture object into a Texture2D object? Thank you!</p>
  
  <pre><code>// Saves texture as PNG file.
  using UnityEngine;
  using System.Collections;
  using System.IO;
  
  public class SaveTexture : MonoBehaviour {
  
      public RenderTexture tex;
  
      // Save Texture as PNG
      void SaveTexturePNG()
      {
          // Encode texture into PNG
          byte[] bytes = tex.EncodeToPNG();
          Object.Destroy(tex);
  
          // For testing purposes, also write to a file in the project folder
          File.WriteAllBytes(Application.dataPath + "/../SavedScreen.png", bytes);
      }
  }
  </code></pre>