title: CCLiquid renders my screen black
body: <p>I am using cocos2d-iphone, latest non-beta version.</p>
  
  <p>Recently I found this: <a href="http://www.cocos2d-iphone.org/wiki/doku.php/prog_guide:effects" rel="nofollow">http://www.cocos2d-iphone.org/wiki/doku.php/prog_guide:effects</a>, and I was interested in CCLiquid or CCWaves for some water effects in my game.</p>
  
  <p>However, when I apply CCLiquid action on my CCSprite, everything but the sprite itself is rendered black. Well, not exactly. When I increased the amplitude of the action, I noticed that it was actually a black background the size of the screen generated directly below my CCSprite (and such background was also being "waved").</p>
  
  <p>Even though this is not a 3D action (no 3D suffix at least), I decided to follow the tip on that page and put this on my delegate:</p>
  
  <pre><code>[[CCDirector sharedDirector] setDepthBufferFormat:kDepthBuffer16];
  </code></pre>
  
  <p>But <code>kDepthBuffer16</code> is not recognized anyway.</p>
  
  <p>Any ideas?</p>
  
  <p><em>Edit</em>: Something that might be worth mentioning is that my sprite is being animated with CCAnimate.</p>