<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "xhtml1-transitional.dtd">
<!-- saved from url=(0013)about:internet -->
<?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>glGetProgramPipeline - OpenGL 4 Reference Pages</title><meta name="generator" content="DocBook XSL Stylesheets V1.69.1" /></head><body><div class="refentry" lang="en" xml:lang="en"><a id="glGetProgramPipeline"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>glGetProgramPipeline — retrieve properties of a program pipeline object</p></div><div class="refsynopsisdiv"><h2>C Specification</h2><div class="funcsynopsis"><table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0"><tr><td><code class="funcdef">void <b class="fsfunc">glGetProgramPipelineiv</b>(</code></td><td>GLuint  </td><td><var class="pdparam">pipeline</var>, </td></tr><tr><td> </td><td>GLenum  </td><td><var class="pdparam">pname</var>, </td></tr><tr><td> </td><td>GLint * </td><td><var class="pdparam">params</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>pipeline</code></em></span></dt><dd><p>
                Specifies the name of a program pipeline object whose parameter retrieve.
            </p></dd><dt><span class="term"><em class="parameter"><code>pname</code></em></span></dt><dd><p>
                Specifies the name of the parameter to retrieve.
            </p></dd><dt><span class="term"><em class="parameter"><code>params</code></em></span></dt><dd><p>
                Specifies the address of a variable into which will be written the value or values
                of <em class="parameter"><code>pname</code></em> for <em class="parameter"><code>pipeline</code></em>.
            </p></dd></dl></div></div><div class="refsect1" lang="en" xml:lang="en"><a id="description"></a><h2>Description</h2><p>
            <code class="function">glGetProgramPipelineiv</code> retrieves the value of a property of the program
            pipeline object <em class="parameter"><code>pipeline</code></em>. <em class="parameter"><code>pname</code></em> specifies the
            name of the parameter whose value to retrieve. The value of the parameter is written to
            the variable whose address is given by <em class="parameter"><code>params</code></em>.
        </p><p>
            If <em class="parameter"><code>pname</code></em> is <code class="constant">GL_ACTIVE_PROGRAM</code>, the name of the
            active program object of the program pipeline object is returned in <em class="parameter"><code>params</code></em>.
        </p><p>
            If <em class="parameter"><code>pname</code></em> is <code class="constant">GL_VERTEX_SHADER</code>, the name of the
            current program object for the vertex shader type of the program pipeline object is
            returned in <em class="parameter"><code>params</code></em>.
        </p><p>
            If <em class="parameter"><code>pname</code></em> is <code class="constant">GL_TESS_CONTROL_SHADER</code>, the name of the
            current program object for the tessellation control shader type of the program pipeline object is
            returned in <em class="parameter"><code>params</code></em>.
        </p><p>
            If <em class="parameter"><code>pname</code></em> is <code class="constant">GL_TESS_EVALUATION_SHADER</code>, the name of the
            current program object for the tessellation evaluation shader type of the program pipeline object is
            returned in <em class="parameter"><code>params</code></em>.
        </p><p>
            If <em class="parameter"><code>pname</code></em> is <code class="constant">GL_GEOMETRY_SHADER</code>, the name of the
            current program object for the geometry shader type of the program pipeline object is
            returned in <em class="parameter"><code>params</code></em>.
        </p><p>
            If <em class="parameter"><code>pname</code></em> is <code class="constant">GL_FRAGMENT_SHADER</code>, the name of the
            current program object for the fragment shader type of the program pipeline object is
            returned in <em class="parameter"><code>params</code></em>.
        </p><p>
            If <em class="parameter"><code>pname</code></em> is <code class="constant">GL_INFO_LOG_LENGTH</code>, the length of the
            info log, including the null terminator, is returned in <em class="parameter"><code>params</code></em>. If there
            is no info log, zero is returned.
        </p></div><div class="refsect1" lang="en" xml:lang="en"><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 zero or
            a name previously returned from a call to <a 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 href="glDeleteProgramPipelines.xml"><span class="citerefentry"><span class="refentrytitle">glDeleteProgramPipelines</span></span></a>.
        </p><p>
            <code class="constant">GL_INVALID_ENUM</code> is generated if <em class="parameter"><code>pname</code></em> is not one
            of the accepted values.
        </p></div><div class="refsect1" lang="en" xml:lang="en"><a id="seealso"></a><h2>See Also</h2><p>
            <a href="glGetProgramPipelines.xml"><span class="citerefentry"><span class="refentrytitle">glGetProgramPipelines</span></span></a>,
            <a href="glBindProgramPipeline.xml"><span class="citerefentry"><span class="refentrytitle">glBindProgramPipeline</span></span></a>,
            <a href="glDeleteProgramPipelines.xml"><span class="citerefentry"><span class="refentrytitle">glDeleteProgramPipelines</span></span></a>
        </p></div><div class="refsect1" lang="en" xml:lang="en"><a id="Copyright"></a><h2>Copyright</h2><p>
            Copyright <span class="trademark"></span>© 2010 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 href="http://opencontent.org/openpub/" target="_top">http://opencontent.org/openpub/</a>.
        </p></div></div></body></html>
