title: Xcode logging: "Metal API Validation Enabled"
body: <p>I'm building a macOS app via Xcode. Every time I build, I get the log output:</p>
  
  <blockquote>
    <p>Metal API Validation Enabled</p>
  </blockquote>
  
  <p>To my knowledge my app is not using any Metal features. I'm not using hardware-accelerated 3D graphics or shaders or video game features or anything like that.</p>
  
  <p>Why is Xcode printing Metal API log output?</p>
  
  <p>Is Metal being used in my app? Can I or should I disable it?</p>
  
  <p>How can I <strong>disable</strong> this "Metal API Validation Enabled" log message?</p>