title: Draw simple text with metal
body: <p>In our app, we used metal to draw heart rate graph and it works fine, but now I want to draw a simple text with metal. </p>
  
  <p>Since I wasn't part of the team when they implemented metal calculation. I have a few questions:</p>
  
  <p><strong>1-</strong> In the metal view encoder, should I use <code>line drawPrimitives type</code> ? I mean <code>drawPrimitives</code> use to draw an object, right? so I have to use it for draw text as well?</p>
  
  <p><strong>2-</strong> We use a custom class to create a circle Vertex, now my question is, should I use a something like this class to draw words in a text?</p>
  
  <p><strong>3-</strong> And my final question, is what is the easiest way to draw and render a simple text (this text is an integer, something like : 1250) in swift. </p>
  
  <p>many thanks</p>