title: Non power of two textures in iOS
body: <p>In my iOS app (targeted for iPad), I'd like to use non power of two (NPT) textures. My GL_VERSION query returns "OpenGL ES 2.0 APPLE". According to the spec, it should support NPT textures, but a simple test shows that I need to resize the texture to 2^N before it shows up.</p>
  
  <p>Does Apple not support the full ES 2.0 spec? Where can I find documentation on what is not supported?</p>
  
  <p>I am using Xcode 4.3.2 and iOS 5.1.</p>
  
  <p>Edit:</p>
  
  <p>A closer look at the ES 2.0.25 spec (section 3.8.2), reveals that there are a few conditions to be met for NPOT to work. Essentially if I use the settings below, I am able to load NPOT textures:</p>
  
  <pre><code>// use linear filetring
  glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_LINEAR); 
  glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_LINEAR);
  // clamp to edge
  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
  </code></pre>
  
  <p>Should I close this or answer my own question?</p>