layout (location = 1) in float time;

Corresponds to the following binding spec:
 
  ((:size 2 :offset 0 :stride 12) (:size 1 :offset 8 :stride 12))

If INDEX-BUFFER is given, it designates the element index array.

See <a href="#GENERIC-FUNCTION%20ORG.SHIRAKUMO.ALLOY.RENDERERS.OPENGL%3AMAKE-VERTEX-BUFFER" class="xref">MAKE-VERTEX-BUFFER</a>
See <a href="#GENERIC-FUNCTION%20ORG.SHIRAKUMO.ALLOY.RENDERERS.OPENGL%3ADRAW-VERTEX-ARRAY" class="xref">DRAW-VERTEX-ARRAY</a></pre></div> </article> </li>  <li> <articl