
</p>
<p>
If your DRI-based driver isn't working, go to the
<a href="https://dri.freedesktop.org/">DRI website</a> for trouble-shooting information.
</p>


<h2>3.2 I'm seeing errors in depth (Z) buffering.  Why?</h2>
<p>
Make sure the ratio of the far to near clipping planes isn't too great.
Look
<a href="https://www.opengl.org/resources/faq/technical/depthbuffer.htm#0040">here</a>
for details.
</p>
<p>
Mesa uses a 16-bit depth buffer by default which is smaller and faster
to clear than a 32-bit buffer but 