           after the barrier will reflect data written by shaders
                        prior to the barrier.  Additionally, texture writes from these
                        commands issued after the barrier will not execute until all shader
                        writes initiated prior to the barrier complete.
                    </p>
            </dd>
            <dt>
              <span class="term">
                <code class="constant">GL_BUFFER_UPDATE_BARRIER_BIT</code>
              </span>
    