S</code>.
        </p><p>
            The other two arguments to <code class="function">glStencilOp</code> specify stencil buffer actions
            that depend on whether subsequent depth buffer tests succeed (<em class="parameter"><code>dppass</code></em>)
            or fail (<em class="parameter"><code>dpfail</code></em>) (see
            <a class="citerefentry" href="glDepthFunc"><span class="citerefentry"><span class="refentrytitle">glDepthFunc</span></span></a>).
            The actions are specifie