ilOp"><span class="citerefentry"><span class="refentrytitle">glStencilOp</span></span></a> sets both front
            and back stencil state to the same values. Use <a class="citerefentry" href="glStencilOpSeparate"><span class="citerefentry"><span class="refentrytitle">glStencilOpSeparate</span></span></a>
            to set front and back stencil state to different values.
        </p><p>
            <code class="function">glStencilOp</code> takes three arguments that indicate what happens
            to