pan></a>.
    </p></div><div class="refsect1" title="Errors"><a id="errors"></a><h2>Errors</h2><p><code class="constant">GL_INVALID_VALUE</code> is generated if
    <em class="parameter"><code>index</code></em> is greater than or equal to
    <code class="constant">GL_MAX_VERTEX_ATTRIBS</code>.</p><p><code class="constant">GL_INVALID_OPERATION</code> is generated if
    <em class="parameter"><code>name</code></em> starts with the reserved prefix
    "gl_".</p><p><code class="constant">GL_INVALID_VALUE</code