   </p><p>
            Changes to individual bits of components cannot be controlled.
            Rather,
            changes are either enabled or disabled for entire color components.
        </p></div><div class="refsect1" lang="en" xml:lang="en"><a id="errors"></a><h2>Errors</h2><p>
            <code class="constant">GL_INVALID_OPERATION</code> is generated if <code class="function">glColorMask</code>
            is executed between the execution of <a class="citerefentry" href="glBegin"><span class="ci