urrent value.
                    </p></dd><dt><span class="term"><code class="constant">GL_ZERO</code></span></dt><dd><p>
                        Sets the stencil buffer value to 0.
                    </p></dd><dt><span class="term"><code class="constant">GL_REPLACE</code></span></dt><dd><p>
                        Sets the stencil buffer value to <span class="emphasis"><em>ref</em></span>,
                        as specified by <a class="citerefentry" href="glStencilFunc"><span class="citerefentry"><spa