title: windows phone xna bitmap image issue
body: <p>I'm making a game and I have a trouble:<br>
  I'm scaling the sptile with this method</p>
  
  <pre><code>spriteBatch.Draw(btn2, btn_pos, null, Color.White, 0, Vector2.Zero, scale, SpriteEffects.None, 0);
  </code></pre>
  
  <p>This code works well, but the sprite is blurred. How to pixelize it?</p>