efentry"><span class="refentrytitle">glDrawBuffer</span></span></a>.
        </p><p>
            The pixel ownership test,
            the scissor test,
            dithering, and the buffer writemasks affect the operation of <code class="function">glClear</code>.
            The scissor box bounds the cleared region.
            Alpha function,
            blend function,
            logical operation,
            stenciling,
            texture mapping,
            and depth-buffering are ignored by <code