title: How to get a "Glow" shader effect in OpenGL ES 2.0?
body: <p>I'm writing a 3D app for iOS. I'm new to OpenGL ES 2.0, so I'm still getting myself around writing basic shaders.
  I really need to implement a "Glow" effect on some of my models, based on the texturing.</p>
  
  <p>Here's a sample:</p>
  
  <p><a href="https://i.stack.imgur.com/Clf0W.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/Clf0W.jpg" alt="Bloom/Glow from www.skillmanmedia.com/realbasic/bloomsnapshot.jpg"></a>. </p>
  
  <p>I'm looking for code examples for OpenGL <strong>ES</strong> 2.0. Most code I find on the internet is either for desktop OpenGL or D3D.</p>
  
  <p>Any ideas?</p>