title: Why isn't canvas 2D context using WebGL under the hood?
body: <p>I have used canvas 2D context quite a lot, and recently started to learn some WebGL as well.</p>
  
  <p>The question in the title came to me when I was working on a tutorial on how to implement <code>context.drawImage()</code> from 2D context in WebGL. The result was something that worked like <code>context.drawImage()</code> (at least pretty close), but was much faster because it was using WebGL.</p>
  
  <p>In theory, I believe everything in canvas 2D context could be emulated in WebGL, resulting in large performance gains. So why isn't it?</p>
  
  <p>I'm defenitely not talking about changing any syntax or anything. I really like the simplicity of 2D context. But why isn't the browser doing what that tutorial did under the hood?</p>
  
  <p>I understand that WebGL doesn't have full support everywhere, but I still think that it could be used if possible, with regular 2D context as fallback.</p>