title: Non-power-of-2 texture render warning in chrome
body: <p>Page: <a href="http://nps.netarteria.pl/gallery/">http://nps.netarteria.pl/gallery/</a>
  I'm following this tutorial: <a href="https://developer.mozilla.org/en-US/docs/WebGL/Animating_textures_in_WebGL">https://developer.mozilla.org/en-US/docs/WebGL/Animating_textures_in_WebGL</a> but my chrome (in inspect mode) shows this warning: <code>58RENDER WARNING: texture bound to texture unit 0 is not renderable. It maybe non-power-of-2 and have  incompatible texture filtering or is not 'texture complete'</code>. But I <strong>am</strong> using correct filtering (non-mipmap), so I'm not sure what's wrong. Also notice bottom line of pixels in both videos - it's stretched, I'm not sure if that's related.</p>