title: How to find the best PixelFormat for an Android SurfaceView
body: <p>I have found that changing the pixel format in a SurfaceView has a large impact on frame rates. However I can't seem to find a way to select the best format on a per device basis.</p>
  
  <p>Example:</p>
  
  <pre><code>@Override
  public void surfaceCreated(final SurfaceHolder holder) {
      //This line seems to fix speed issue with his res devices
      holder.setFormat(PixelFormat.RGBA_8888);
      androidGame.setSurfaceHolder(holder);
  }
  </code></pre>
  
  <p>This causes my game to run much faster on a Galaxy Nexus (ICS 4.0) but Slow on a Motorola Xoom (3.2.1).</p>
  
  <p>If I change to PixelFormat.OPAQUE the situation reverses. The Nexus is slow and the Xoom is now fast. So I need to be able to determine the best format per device. I have tried using getWindow().getAttributes().format but this always returns -1 (OPAQUE).</p>