ption</h2><p>
            <code class="function">glXGetCurrentReadDrawable</code> returns the current read drawable,
            as specified by <code class="constant">read</code> parameter
            of <a class="citerefentry" href="glXMakeContextCurrent"><span class="citerefentry"><span class="refentrytitle">glXMakeContextCurrent</span></span></a>.
            If there is no current drawable,
            <code class="constant">None</code> is returned.
        </p><p>
            <code class="function">gl