title: Does OpenGL ES 2.0 have a steeper learning curve than Metal?
body: <p>I'm very interested in 3D graphics and heard many developers raving about Metal.</p>
  
  <p>Can someone who has worked with Metal and OpenGL ES 2.0 comment on how the learning curve compares to OpenGL ES 2.0?</p>
  
  <p>As a beginner who aims to stay loyal to iOS, is Metal easier to learn and master than OpenGL ES 2.0 or is it harder because it is more advanced?</p>
  
  <p>I hope this question will be useful to many as I am trying to figure out where to start.</p>