ss="citerefentry" href="glReadPixels"><span class="citerefentry"><span class="refentrytitle">glReadPixels</span></span></a> as well as the unpacking of
            polygon stipple patterns (see <a class="citerefentry" href="glPolygonStipple"><span class="citerefentry"><span class="refentrytitle">glPolygonStipple</span></span></a>), bitmaps (see
            <a class="citerefentry" href="glBitmap"><span class="citerefentry"><span class="refentrytitle">glBitmap</span></span></a>), texture patterns (see <a clas