upSize</span></span></a>,
            <a class="citerefentry" href="gl_WorkGroupID"><span class="citerefentry"><span class="refentrytitle">gl_WorkGroupID</span></span></a>,
            <a class="citerefentry" href="gl_LocalInvocationID"><span class="citerefentry"><span class="refentrytitle">gl_LocalInvocationID</span></span></a>
        </p>
      </div>
      <div class="refsect1" id="Copyright">
        <h2>Copyright</h2>
        <p>
            Copyright © 2011-2014 Khronos Group.
            This mater