title: How fast is glDispatchCompute?
body: <p><a href="https://www.opengl.org/wiki/Compute_Shader" rel="nofollow">Official OpenGL wiki</a> says </p>
  
  <blockquote>
    <p>Compute shaders are not part of the regular rendering pipeline. So when executing a Drawing Command, the compute shader linked into the current program or pipeline is not involved.</p>
  </blockquote>
  
  <p>So I expect it to invoke faster than <code>glDrawArrays</code>. Can anyone provide more details about the overhead?</p>
  
  <p>Is <code>glDispatchComputeIndirect​</code> the faster alternative because it skips error-checks?</p>