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mix.xhtml
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mix.xhtml
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<div class="refentry" id="mix">
<div class="titlepage"></div>
<div class="refnamediv">
<h2>Name</h2>
<p>mix — linearly interpolate between two values</p>
</div>
<div class="refsynopsisdiv">
<h2>Declaration</h2>
<div class="funcsynopsis">
<table style="border: 0; cellspacing: 0; cellpadding: 0;" class="funcprototype-table">
<tr>
<td>
<code class="funcdef">genType <strong class="fsfunc">mix</strong>(</code>
</td>
<td>genType <var class="pdparam">x</var>, </td>
</tr>
<tr>
<td> </td>
<td>genType <var class="pdparam">y</var>, </td>
</tr>
<tr>
<td> </td>
<td>genType <var class="pdparam">a</var><code>)</code>;</td>
</tr>
</table>
<div class="funcprototype-spacer"> </div>
</div>
<div class="funcsynopsis">
<table style="border: 0; cellspacing: 0; cellpadding: 0;" class="funcprototype-table">
<tr>
<td>
<code class="funcdef">genType <strong class="fsfunc">mix</strong>(</code>
</td>
<td>genType <var class="pdparam">x</var>, </td>
</tr>
<tr>
<td> </td>
<td>genType <var class="pdparam">y</var>, </td>
</tr>
<tr>
<td> </td>
<td>float <var class="pdparam">a</var><code>)</code>;</td>
</tr>
</table>
<div class="funcprototype-spacer"> </div>
</div>
<div class="funcsynopsis">
<table style="border: 0; cellspacing: 0; cellpadding: 0;" class="funcprototype-table">
<tr>
<td>
<code class="funcdef">genDType <strong class="fsfunc">mix</strong>(</code>
</td>
<td>genDType <var class="pdparam">x</var>, </td>
</tr>
<tr>
<td> </td>
<td>genDType <var class="pdparam">y</var>, </td>
</tr>
<tr>
<td> </td>
<td>genDType <var class="pdparam">a</var><code>)</code>;</td>
</tr>
</table>
<div class="funcprototype-spacer"> </div>
</div>
<div class="funcsynopsis">
<table style="border: 0; cellspacing: 0; cellpadding: 0;" class="funcprototype-table">
<tr>
<td>
<code class="funcdef">genDType <strong class="fsfunc">mix</strong>(</code>
</td>
<td>genDType <var class="pdparam">x</var>, </td>
</tr>
<tr>
<td> </td>
<td>genDType <var class="pdparam">y</var>, </td>
</tr>
<tr>
<td> </td>
<td>double <var class="pdparam">a</var><code>)</code>;</td>
</tr>
</table>
<div class="funcprototype-spacer"> </div>
</div>
<div class="funcsynopsis">
<table style="border: 0; cellspacing: 0; cellpadding: 0;" class="funcprototype-table">
<tr>
<td>
<code class="funcdef">genType <strong class="fsfunc">mix</strong>(</code>
</td>
<td>genType <var class="pdparam">x</var>, </td>
</tr>
<tr>
<td> </td>
<td>genType <var class="pdparam">y</var>, </td>
</tr>
<tr>
<td> </td>
<td>genBType <var class="pdparam">a</var><code>)</code>;</td>
</tr>
</table>
<div class="funcprototype-spacer"> </div>
</div>
<div class="funcsynopsis">
<table style="border: 0; cellspacing: 0; cellpadding: 0;" class="funcprototype-table">
<tr>
<td>
<code class="funcdef">genDType <strong class="fsfunc">mix</strong>(</code>
</td>
<td>genDType <var class="pdparam">x</var>, </td>
</tr>
<tr>
<td> </td>
<td>genDType <var class="pdparam">y</var>, </td>
</tr>
<tr>
<td> </td>
<td>genBType <var class="pdparam">a</var><code>)</code>;</td>
</tr>
</table>
<div class="funcprototype-spacer"> </div>
</div>
<div class="funcsynopsis">
<table style="border: 0; cellspacing: 0; cellpadding: 0;" class="funcprototype-table">
<tr>
<td>
<code class="funcdef">genIType <strong class="fsfunc">mix</strong>(</code>
</td>
<td>genIType <var class="pdparam">x</var>, </td>
</tr>
<tr>
<td> </td>
<td>genIType <var class="pdparam">y</var>, </td>
</tr>
<tr>
<td> </td>
<td>genBType <var class="pdparam">a</var><code>)</code>;</td>
</tr>
</table>
<div class="funcprototype-spacer"> </div>
</div>
<div class="funcsynopsis">
<table style="border: 0; cellspacing: 0; cellpadding: 0;" class="funcprototype-table">
<tr>
<td>
<code class="funcdef">genUType <strong class="fsfunc">mix</strong>(</code>
</td>
<td>genUType <var class="pdparam">x</var>, </td>
</tr>
<tr>
<td> </td>
<td>genUType <var class="pdparam">y</var>, </td>
</tr>
<tr>
<td> </td>
<td>genBType <var class="pdparam">a</var><code>)</code>;</td>
</tr>
</table>
<div class="funcprototype-spacer"> </div>
</div>
<div class="funcsynopsis">
<table style="border: 0; cellspacing: 0; cellpadding: 0;" class="funcprototype-table">
<tr>
<td>
<code class="funcdef">genBType <strong class="fsfunc">mix</strong>(</code>
</td>
<td>genBType <var class="pdparam">x</var>, </td>
</tr>
<tr>
<td> </td>
<td>genBType <var class="pdparam">y</var>, </td>
</tr>
<tr>
<td> </td>
<td>genBType <var class="pdparam">a</var><code>)</code>;</td>
</tr>
</table>
<div class="funcprototype-spacer"> </div>
</div>
</div>
<div class="refsect1" id="parameters">
<h2>Parameters</h2>
<div class="variablelist">
<dl class="variablelist">
<dt>
<span class="term">
<em class="parameter">
<code>x</code>
</em>
</span>
</dt>
<dd>
<p>
Specify the start of the range in which to interpolate.
</p>
</dd>
<dt>
<span class="term">
<em class="parameter">
<code>y</code>
</em>
</span>
</dt>
<dd>
<p>
Specify the end of the range in which to interpolate.
</p>
</dd>
<dt>
<span class="term">
<em class="parameter">
<code>a</code>
</em>
</span>
</dt>
<dd>
<p>
Specify the value to use to interpolate between <em class="parameter"><code>x</code></em> and <em class="parameter"><code>y</code></em>.
</p>
</dd>
</dl>
</div>
</div>
<div class="refsect1" id="description">
<h2>Description</h2>
<p>
<code class="function">mix</code> performs a linear interpolation between
<em class="parameter"><code>x</code></em> and <em class="parameter"><code>y</code></em> using
<em class="parameter"><code>a</code></em> to weight between them. The return
value is computed as $x \times (1 - a) + y \times a$.
</p>
<p>
The variants of <code class="function">mix</code> where
<em class="parameter"><code>a</code></em> is <code class="constant">genBType</code> select
which vector each returned component comes from. For a component
of <em class="parameter"><code>a</code></em> that is false, the corresponding
component of <em class="parameter"><code>x</code></em> is returned. For a
component of <em class="parameter"><code>a</code></em> that is true, the
corresponding component of <em class="parameter"><code>y</code></em> is returned.
Components of <em class="parameter"><code>x</code></em> and
<em class="parameter"><code>y</code></em> that are not selected are allowed to be
invalid floating-point values and will have no effect on the
results.
</p>
</div>
{$pipelinestall}{$examples}
<div class="refsect1" id="versions">
<h2>Version Support</h2>
<div class="informaltable">
<table style="border-collapse: collapse; border-top: 2px solid ; border-bottom: 2px solid ; border-left: 2px solid ; border-right: 2px solid ; ">
<colgroup>
<col style="text-align: left; "/>
<col style="text-align: center; " class="firstvers"/>
<col style="text-align: center; "/>
<col style="text-align: center; "/>
<col style="text-align: center; "/>
<col style="text-align: center; "/>
<col style="text-align: center; "/>
<col style="text-align: center; "/>
<col style="text-align: center; "/>
<col style="text-align: center; "/>
<col style="text-align: center; "/>
<col style="text-align: center; "/>
<col style="text-align: center; " class="lastvers"/>
</colgroup>
<thead>
<tr>
<th style="text-align: left; border-right: 2px solid ; ">
</th>
<th style="text-align: center; border-bottom: 2px solid ; " colspan="12">
<span class="bold"><strong>OpenGL Shading Language Version</strong></span>
</th>
</tr>
<tr>
<th style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">
<span class="bold"><strong>Function Name</strong></span>
</th>
<th style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">
<span class="bold"><strong>1.10</strong></span>
</th>
<th style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">
<span class="bold"><strong>1.20</strong></span>
</th>
<th style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">
<span class="bold"><strong>1.30</strong></span>
</th>
<th style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">
<span class="bold"><strong>1.40</strong></span>
</th>
<th style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">
<span class="bold"><strong>1.50</strong></span>
</th>
<th style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">
<span class="bold"><strong>3.30</strong></span>
</th>
<th style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">
<span class="bold"><strong>4.00</strong></span>
</th>
<th style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">
<span class="bold"><strong>4.10</strong></span>
</th>
<th style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">
<span class="bold"><strong>4.20</strong></span>
</th>
<th style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">
<span class="bold"><strong>4.30</strong></span>
</th>
<th style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">
<span class="bold"><strong>4.40</strong></span>
</th>
<th style="text-align: center; border-bottom: 2px solid ; ">
<span class="bold"><strong>4.50</strong></span>
</th>
</tr>
</thead>
<tbody>
<tr>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">mix(genType)</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">✔</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">✔</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">✔</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">✔</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">✔</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">✔</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">✔</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">✔</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">✔</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">✔</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">✔</td>
<td style="text-align: center; border-bottom: 2px solid ; ">✔</td>
</tr>
<tr>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">mix(genDType)</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">-</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">-</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">-</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">-</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">-</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">-</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">✔</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">✔</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">✔</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">✔</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">✔</td>
<td style="text-align: center; border-bottom: 2px solid ; ">✔</td>
</tr>
<tr>
<td style="text-align: left; border-right: 2px solid ; ">mix(genIType), mix(genUType), mix(genBType)</td>
<td style="text-align: center; border-right: 2px solid ; ">-</td>
<td style="text-align: center; border-right: 2px solid ; ">-</td>
<td style="text-align: center; border-right: 2px solid ; ">-</td>
<td style="text-align: center; border-right: 2px solid ; ">-</td>
<td style="text-align: center; border-right: 2px solid ; ">-</td>
<td style="text-align: center; border-right: 2px solid ; ">-</td>
<td style="text-align: center; border-right: 2px solid ; ">-</td>
<td style="text-align: center; border-right: 2px solid ; ">-</td>
<td style="text-align: center; border-right: 2px solid ; ">-</td>
<td style="text-align: center; border-right: 2px solid ; ">-</td>
<td style="text-align: center; border-right: 2px solid ; ">-</td>
<td style="text-align: center; ">✔</td>
</tr>
</tbody>
</table>
</div>
</div>
<div class="refsect1" id="seealso">
<h2>See Also</h2>
<p>
<a class="citerefentry" href="min"><span class="citerefentry"><span class="refentrytitle">min</span></span></a>,
<a class="citerefentry" href="max"><span class="citerefentry"><span class="refentrytitle">max</span></span></a>
</p>
</div>
<div class="refsect1" id="Copyright">
<h2>Copyright</h2>
<p>
Copyright © 2011-2014 Khronos Group.
This material may be distributed subject to the terms and conditions set forth in
the Open Publication License, v 1.0, 8 June 1999.
<a class="link" href="https://opencontent.org/openpub/" target="_top">https://opencontent.org/openpub/</a>.
</p>
</div>
</div>