title: OpenGL Depth Buffer
body: <p>I am a complete novice to OpenGL, so I am just trying out some tests with it. I have a rectangle that I can rotate and translate around, and all is well. </p>
  
  <p>The problem is, when I translate it below 1.0 Z, it disappears! 
  I read about the depth buffer, and it says that its depth shouldn't be touched. Is there a way to work around this that I am completely missing? (Probably) If so, what is it?</p>