<div class="refentry" lang="en" xml:lang="en"><a id="glFogCoord"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>glFogCoord — set the current fog coordinates</p></div><div class="refsynopsisdiv"><h2>C Specification</h2><div class="funcsynopsis"><table><tr><td><code class="funcdef">void <b class="fsfunc">glFogCoordd</b>(</code></td><td>GLdouble  </td><td><var class="pdparam">coord</var><code>)</code>;</td></tr></table></div><div class="funcsynopsis"><table><tr><td><code class="funcdef">void <b class="fsfunc">glFogCoordf</b>(</code></td><td>GLfloat  </td><td><var class="pdparam">coord</var><code>)</code>;</td></tr></table></div></div><div class="refsect1" lang="en" xml:lang="en"><a id="parameters"></a><h2>Parameters</h2><div class="variablelist"><dl><dt><span class="term"><em class="parameter"><code>coord</code></em></span></dt><dd><p>

Specify the fog distance.

</p></dd></dl></div></div><div class="refsynopsisdiv"><h2>C Specification</h2><div class="funcsynopsis"><table><tr><td><code class="funcdef">void <b class="fsfunc">glFogCoorddv</b>(</code></td><td>GLdouble *  </td><td><var class="pdparam">coord</var><code>)</code>;</td></tr></table></div><div class="funcsynopsis"><table><tr><td><code class="funcdef">void <b class="fsfunc">glFogCoordfv</b>(</code></td><td>GLfloat *  </td><td><var class="pdparam">coord</var><code>)</code>;</td></tr></table></div></div><div class="refsect1" lang="en" xml:lang="en"><a id="parameters2"></a><h2>Parameters</h2><div class="variablelist"><dl><dt><span class="term"><em class="parameter"><code>coord</code></em></span></dt><dd><p>

Specifies a pointer to an array containing a single value representing the

fog distance.

</p></dd></dl></div></div><div class="refsect1" lang="en" xml:lang="en"><a id="description"></a><h2>Description</h2><p>

<code class="function">glFogCoord</code> specifies the fog coordinate that is associated with each vertex and

the current raster position. The value specified is interpolated and used

in computing the fog color (see <a class="citerefentry" href="glFog"><span class="citerefentry"><span class="refentrytitle">glFog</span></span></a>).

</p></div><div class="refsect1" lang="en" xml:lang="en"><a id="notes"></a><h2>Notes</h2><p>

<code class="function">glFogCoord</code> is available only if the GL version is 1.4 or greater.

</p><p>

The current fog coordinate can be updated at any time. In particular,

<code class="function">glFogCoord</code> can be called between a call to <a class="citerefentry" href="glBegin"><span class="citerefentry"><span class="refentrytitle">glBegin</span></span></a> and the corresponding

call to <a class="citerefentry" href="glEnd"><span class="citerefentry"><span class="refentrytitle">glEnd</span></span></a>.

</p></div><div class="refsect1" lang="en" xml:lang="en"><a id="associatedgets"></a><h2>Associated Gets</h2><p>

<a class="citerefentry" href="glGet"><span class="citerefentry"><span class="refentrytitle">glGet</span></span></a> with argument <code class="constant">GL_CURRENT_FOG_COORD</code>

</p></div>

{$pipelinestall}{$examples}

<div class="refsect1" lang="en" xml:lang="en"><a id="seealso"></a><h2>See Also</h2><p>

<a class="citerefentry" href="glFog"><span class="citerefentry"><span class="refentrytitle">glFog</span></span></a>,

<a class="citerefentry" href="glFogCoordPointer"><span class="citerefentry"><span class="refentrytitle">glFogCoordPointer</span></span></a>,

<a class="citerefentry" href="glVertex"><span class="citerefentry"><span class="refentrytitle">glVertex</span></span></a>

</p></div><div class="refsect1" lang="en" xml:lang="en"><div id="Copyright"><h2>Copyright</h2><p>

Copyright © 1991-2006

Silicon Graphics, Inc. This document is licensed under the SGI

Free Software B License. For details, see

<a class="ulink" href="https://web.archive.org/web/20171022161616/http://oss.sgi.com/projects/FreeB/" target="_top">https://web.archive.org/web/20171022161616/http://oss.sgi.com/projects/FreeB/</a>.

</p></div></div></div>