title: Is it possible to get GLES texture from Canvas or Surface?
body: <p>I trying to use <code>Canvas</code> from such methods:</p>
  
  <pre><code> Canvas mCanvas = mSurface.lockCanvas(null);   
   mSurface.unlockCanvasAndPost(mCanvas);
  </code></pre>
  
  <p>I need to display images or text on camera preview. The way I choose is to create texture from <code>canvas</code>, which contains views. I gonna combine this texture and texture of video frame. Is it right way?</p>