title: how to use textures in android ndk with opengl es 2.0?
body: <p>I tried to the code from <a href="https://stackoverflow.com/questions/2878536/fastest-2d-frame-rate-possible-with-android-ndk-my-try-included-better-options/3476199#3476199">Fastest 2D frame rate possible with android NDK, my try included, better options available?</a> ,<br>
  but textures didn't show, just filled with black.
  <br>
  who can show me a example of how to use textures in android ndk with opengl es 2.0?
  <br>
  Thanks!
  <br><br><br>
  my phone is Moto Milestone with android 2.1.</p>