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<?xml version="1.0" encoding="UTF-8"?>
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<?xml-stylesheet type="text/xsl" href="mathml.xsl"?><html xmlns="http://www.w3.org/1999/xhtml" xmlns:pref="http://www.w3.org/2002/Math/preference" pref:renderer="mathplayer-dl"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><link rel="stylesheet" type="text/css" href="opengl-man.css" /><title>glActiveShaderProgram - OpenGL 4 Reference Pages</title><meta name="generator" content="DocBook XSL Stylesheets V1.78.1" /></head><body><div class="refentry"><a id="glActiveShaderProgram"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>glActiveShaderProgram — set the active program object for a program pipeline object</p></div><div class="refsynopsisdiv"><h2>C Specification</h2><div class="funcsynopsis"><table border="0" class="funcprototype-table" summary="Function synopsis" style="cellspacing: 0; cellpadding: 0;"><tr><td><code class="funcdef">void <strong class="fsfunc">glActiveShaderProgram</strong>(</code></td><td>GLuint <var class="pdparam">pipeline</var>, </td></tr><tr><td> </td><td>GLuint <var class="pdparam">program</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>pipeline</code></em></span></dt><dd><p>
Specifies the program pipeline object to set the active program object for.
</p></dd><dt><span class="term"><em class="parameter"><code>program</code></em></span></dt><dd><p>
Specifies the program object to set as the active program pipeline object <em class="parameter"><code>pipeline</code></em>.
</p></dd></dl></div></div><div class="refsect1"><a id="description"></a><h2>Description</h2><p>
<code class="function">glActiveShaderProgram</code> sets the linked program named by <em class="parameter"><code>program</code></em>
to be the active program for the program pipeline object <em class="parameter"><code>pipeline</code></em>. The active
program in the active program pipeline object is the target of calls to <a class="citerefentry" href="glUniform.xml"><span class="citerefentry"><span class="refentrytitle">glUniform</span></span></a>
when no program has been made current through a call to <a class="citerefentry" href="glUseProgram.xml"><span class="citerefentry"><span class="refentrytitle">glUseProgram</span></span></a>.
</p></div><div class="refsect1"><a id="errors"></a><h2>Errors</h2><p>
<code class="constant">GL_INVALID_OPERATION</code> is generated if <em class="parameter"><code>pipeline</code></em> is not
a name previously returned from a call to <a class="citerefentry" href="glGenProgramPipelines.xml"><span class="citerefentry"><span class="refentrytitle">glGenProgramPipelines</span></span></a>
or if such a name has been deleted by a call to
<a class="citerefentry" href="glDeleteProgramPipelines.xml"><span class="citerefentry"><span class="refentrytitle">glDeleteProgramPipelines</span></span></a>.
</p><p>
<code class="constant">GL_INVALID_OPERATION</code> is generated if <em class="parameter"><code>program</code></em> refers
to a program object that has not been successfully linked.
</p></div><div class="refsect1"><a id="seealso"></a><h2>See Also</h2><p>
<a class="citerefentry" href="glGenProgramPipelines.xml"><span class="citerefentry"><span class="refentrytitle">glGenProgramPipelines</span></span></a>,
<a class="citerefentry" href="glDeleteProgramPipelines.xml"><span class="citerefentry"><span class="refentrytitle">glDeleteProgramPipelines</span></span></a>,
<a class="citerefentry" href="glIsProgramPipeline.xml"><span class="citerefentry"><span class="refentrytitle">glIsProgramPipeline</span></span></a>,
<a class="citerefentry" href="glUseProgram.xml"><span class="citerefentry"><span class="refentrytitle">glUseProgram</span></span></a>,
<a class="citerefentry" href="glUniform.xml"><span class="citerefentry"><span class="refentrytitle">glUniform</span></span></a>
</p></div><div class="refsect1"><a id="Copyright"></a><h2>Copyright</h2><p>
Copyright <span class="trademark"></span>© 2010-2013 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="ulink" href="http://opencontent.org/openpub/" target="_top">http://opencontent.org/openpub/</a>.
</p></div></div></body></html>
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