<div class="refentry"><a id="glGetAttachedShaders"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>glGetAttachedShaders — return the handles of the shader objects attached to a program object</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">glGetAttachedShaders</strong>(</code></td><td>GLuint <var class="pdparam">program</var>, </td></tr><tr><td> </td><td>GLsizei <var class="pdparam">maxCount</var>, </td></tr><tr><td> </td><td>GLsizei *<var class="pdparam">count</var>, </td></tr><tr><td> </td><td>GLuint *<var class="pdparam">shaders</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>program</code></em></span></dt><dd><p>Specifies the program object to be

queried.</p></dd><dt><span class="term"><em class="parameter"><code>maxCount</code></em></span></dt><dd><p>Specifies the size of the array for storing

the returned object names.</p></dd><dt><span class="term"><em class="parameter"><code>count</code></em></span></dt><dd><p>Returns the number of names actually returned

in <em class="parameter"><code>shaders</code></em>.</p></dd><dt><span class="term"><em class="parameter"><code>shaders</code></em></span></dt><dd><p>Specifies an array that is used to return the

names of attached shader objects.</p></dd></dl></div></div><div class="refsect1"><a id="description"></a><h2>Description</h2><p><code class="function">glGetAttachedShaders</code> returns the

names of the shader objects attached to

<em class="parameter"><code>program</code></em>. The names of shader objects that

are attached to <em class="parameter"><code>program</code></em> will be returned

in <em class="parameter"><code>shaders.</code></em> The actual number of shader

names written into <em class="parameter"><code>shaders</code></em> is returned in

<em class="parameter"><code>count.</code></em> If no shader objects are attached

to <em class="parameter"><code>program</code></em>, <em class="parameter"><code>count</code></em>

is set to 0. The maximum number of shader names that may be

returned in <em class="parameter"><code>shaders</code></em> is specified by

<em class="parameter"><code>maxCount</code></em>. </p><p>If the number of names actually returned is not required

(for instance, if it has just been obtained by calling

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

a value of <code class="constant">NULL</code> may be passed for count. If

no shader objects are attached to

<em class="parameter"><code>program</code></em>, a value of 0 will be returned in

<em class="parameter"><code>count</code></em>. The actual number of attached

shaders can be obtained by calling

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

with the value <code class="constant">GL_ATTACHED_SHADERS</code>.</p></div><div class="refsect1"><a id="errors"></a><h2>Errors</h2><p><code class="constant">GL_INVALID_VALUE</code> is generated if

<em class="parameter"><code>program</code></em> is not a value generated by

OpenGL.</p><p><code class="constant">GL_INVALID_OPERATION</code> is generated if

<em class="parameter"><code>program</code></em> is not a program object.</p><p><code class="constant">GL_INVALID_VALUE</code> is generated if

<em class="parameter"><code>maxCount</code></em> is less than 0.</p></div><div class="refsect1"><a id="associatedgets"></a><h2>Associated Gets</h2><p><a class="citerefentry" href="glGetProgramiv"><span class="citerefentry"><span class="refentrytitle">glGetProgramiv</span></span></a>

with argument <code class="constant">GL_ATTACHED_SHADERS</code></p><p><a class="citerefentry" href="glIsProgram"><span class="citerefentry"><span class="refentrytitle">glIsProgram</span></span></a></p></div>

{$pipelinestall}{$examples}

<div class="refsect1"><a id="seealso"></a><h2>See Also</h2><p><a class="citerefentry" href="glAttachShader"><span class="citerefentry"><span class="refentrytitle">glAttachShader</span></span></a>,

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

</div><div class="refsect1"><div id="Copyright"><h2>Copyright</h2><p>

Copyright © 2003-2005 3Dlabs Inc. Ltd.

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="https://opencontent.org/openpub/" target="_top">https://opencontent.org/openpub/</a>.

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