<div class="refentry"><a id="glHint"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>glHint — specify implementation-specific hints</p></div><div class="refsynopsisdiv"><h2>C Specification</h2><div class="funcsynopsis"><table class="funcprototype-table" style="cellspacing: 0; cellpadding: 0;"><tr><td><code class="funcdef">void <strong class="fsfunc">glHint</strong>(</code></td><td>GLenum <var class="pdparam">target</var>, </td></tr><tr><td> </td><td>GLenum <var class="pdparam">mode</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer"> </div></div></div><div class="refsect1"><a id="parameters"></a><h2>Parameters</h2><div class="variablelist"><dl class="variablelist"><dt><span class="term"><em class="parameter"><code>target</code></em></span></dt><dd><p>

Specifies a symbolic constant indicating the behavior to be controlled.

<code class="constant">GL_GENERATE_MIPMAP_HINT</code> is accepted.

</p></dd><dt><span class="term"><em class="parameter"><code>mode</code></em></span></dt><dd><p>

Specifies a symbolic constant indicating the desired behavior.

<code class="constant">GL_FASTEST</code>,

<code class="constant">GL_NICEST</code>, and

<code class="constant">GL_DONT_CARE</code> are accepted.

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

Certain aspects of GL behavior,

when there is room for interpretation,

can be controlled with hints.

A hint is specified with two arguments.

<em class="parameter"><code>target</code></em> is a symbolic

constant indicating the behavior to be controlled,

and <em class="parameter"><code>mode</code></em> is another symbolic constant indicating the desired

behavior. The initial value for each <em class="parameter"><code>target</code></em> is <code class="constant">GL_DONT_CARE</code>.

<em class="parameter"><code>mode</code></em> can be one of the following:

</p><div class="variablelist"><dl class="variablelist"><dt><span class="term"><code class="constant">GL_FASTEST</code></span></dt><dd><p>

The most efficient option should be chosen.

</p></dd><dt><span class="term"><code class="constant">GL_NICEST</code></span></dt><dd><p>

The most correct,

or highest quality,

option should be chosen.

</p></dd><dt><span class="term"><code class="constant">GL_DONT_CARE</code></span></dt><dd><p>

No preference.

</p></dd></dl></div><p>

Though the implementation aspects that can be hinted are well defined,

the interpretation of the hints depends on the implementation.

The hint aspects that can be specified with <em class="parameter"><code>target</code></em>,

along with suggested semantics,

are as follows:

</p><div class="variablelist"><dl class="variablelist"><dt><span class="term"><code class="constant">GL_GENERATE_MIPMAP_HINT</code></span></dt><dd><p>

Indicates the quality of filtering when generating mipmap images with

<a class="citerefentry" href="glGenerateMipmap"><span class="citerefentry"><span class="refentrytitle">glGenerateMipmap</span></span></a>.

</p></dd></dl></div></div><div class="refsect1"><a id="notes"></a><h2>Notes</h2><p>

The interpretation of hints depends on the implementation.

Some implementations ignore <code class="function">glHint</code> settings.

</p></div><div class="refsect1"><a id="errors"></a><h2>Errors</h2><p>

<code class="constant">GL_INVALID_ENUM</code> is generated if either <em class="parameter"><code>target</code></em> or <em class="parameter"><code>mode</code></em> is not

an accepted value.

</p></div>

{$pipelinestall}{$examples}

<div class="refsect1"><a id="seealso"></a><h2>See Also</h2><p><a class="citerefentry" href="glGenerateMipmap"><span class="citerefentry"><span class="refentrytitle">glGenerateMipmap</span></span></a></p></div><div class="refsect1"><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="http://oss.sgi.com/projects/FreeB/" target="_top">http://oss.sgi.com/projects/FreeB/</a>.

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