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<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<!DOCTYPE html><html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>glBindTransformFeedback - OpenGL 4 Reference Pages</title>
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<header/>
<div class="refentry" id="glBindTransformFeedback">
<div class="titlepage"/>
<div class="refnamediv">
<h2>Name</h2>
<p>glBindTransformFeedback — bind a transform feedback object</p>
</div>
<div class="refsynopsisdiv">
<h2>C Specification</h2>
<div class="funcsynopsis">
<table style="border: 0; cellspacing: 0; cellpadding: 0;" class="funcprototype-table">
<tr>
<td>
<code class="funcdef">void <strong class="fsfunc">glBindTransformFeedback</strong>(</code>
</td>
<td>GLenum <var class="pdparam">target</var>, </td>
</tr>
<tr>
<td> </td>
<td>GLuint <var class="pdparam">id</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>target</code>
</em>
</span>
</dt>
<dd>
<p>
Specifies the target to which to bind the transform feedback object <em class="parameter"><code>id</code></em>. <em class="parameter"><code>target</code></em>
must be <code class="constant">GL_TRANSFORM_FEEDBACK</code>.
</p>
</dd>
<dt>
<span class="term">
<em class="parameter">
<code>id</code>
</em>
</span>
</dt>
<dd>
<p>
Specifies the name of a transform feedback object reserved by <a class="citerefentry" href="glGenTransformFeedbacks.xhtml"><span class="citerefentry"><span class="refentrytitle">glGenTransformFeedbacks</span></span></a>.
</p>
</dd>
</dl>
</div>
</div>
<div class="refsect1" id="description">
<h2>Description</h2>
<p>
<code class="function">glBindTransformFeedback</code> binds the transform feedback object with name <em class="parameter"><code>id</code></em> to the current
GL state. <em class="parameter"><code>id</code></em> must be a name previously returned from a call to
<a class="citerefentry" href="glGenTransformFeedbacks.xhtml"><span class="citerefentry"><span class="refentrytitle">glGenTransformFeedbacks</span></span></a>. If <em class="parameter"><code>id</code></em> has not
previously been bound, a new transform feedback object with name <em class="parameter"><code>id</code></em> and initialized with with the
default transform state vector is created.
</p>
<p>
In the initial state, a default transform feedback object is bound and treated as
a transform feedback object with a name of zero. If the name zero is subsequently bound, the default
transform feedback object is again bound to the GL state.
</p>
<p>
While a transform feedback buffer object is bound, GL operations on the target
to which it is bound affect the bound transform feedback object, and queries of the
target to which a transform feedback object is bound return state from the bound
object. When buffer objects are bound for transform feedback, they are attached to
the currently bound transform feedback object. Buffer objects are used for trans-
form feedback only if they are attached to the currently bound transform feedback
object.
</p>
</div>
<div class="refsect1" id="errors">
<h2>Errors</h2>
<p>
<code class="constant">GL_INVALID_ENUM</code> is generated if <em class="parameter"><code>target</code></em> is not <code class="constant">GL_TRANSFORM_FEEDBACK</code>.
</p>
<p>
<code class="constant">GL_INVALID_OPERATION</code> is generated if the transform feedback operation is
active on the currently bound transform feedback object, and that operation is not paused.
</p>
<p>
<code class="constant">GL_INVALID_OPERATION</code> is generated if <em class="parameter"><code>id</code></em> is not
zero or the name of a transform feedback object returned from a previous call to
<a class="citerefentry" href="glGenTransformFeedbacks.xhtml"><span class="citerefentry"><span class="refentrytitle">glGenTransformFeedbacks</span></span></a>, or
if such a name has been deleted by <a class="citerefentry" href="glDeleteTransformFeedbacks.xhtml"><span class="citerefentry"><span class="refentrytitle">glDeleteTransformFeedbacks</span></span></a>.
</p>
</div>
<div class="refsect1" id="associatedgets">
<h2>Associated Gets</h2>
<p>
<a class="citerefentry" href="glGet.xhtml"><span class="citerefentry"><span class="refentrytitle">glGet</span></span></a> with argument <code class="constant">GL_TRANSFORM_FEEDBACK_BINDING</code>
</p>
</div>
<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 Version</strong></span>
</th>
</tr>
<tr>
<th style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">
<span class="bold"><strong>Function / Feature Name</strong></span>
</th>
<th style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">
<span class="bold"><strong>2.0</strong></span>
</th>
<th style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">
<span class="bold"><strong>2.1</strong></span>
</th>
<th style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">
<span class="bold"><strong>3.0</strong></span>
</th>
<th style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">
<span class="bold"><strong>3.1</strong></span>
</th>
<th style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">
<span class="bold"><strong>3.2</strong></span>
</th>
<th style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">
<span class="bold"><strong>3.3</strong></span>
</th>
<th style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">
<span class="bold"><strong>4.0</strong></span>
</th>
<th style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">
<span class="bold"><strong>4.1</strong></span>
</th>
<th style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">
<span class="bold"><strong>4.2</strong></span>
</th>
<th style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">
<span class="bold"><strong>4.3</strong></span>
</th>
<th style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">
<span class="bold"><strong>4.4</strong></span>
</th>
<th style="text-align: center; border-bottom: 2px solid ; ">
<span class="bold"><strong>4.5</strong></span>
</th>
</tr>
</thead>
<tbody>
<tr>
<td style="text-align: left; border-right: 2px solid ; ">
<code class="function">glBindTransformFeedback</code>
</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="glGenTransformFeedbacks.xhtml"><span class="citerefentry"><span class="refentrytitle">glGenTransformFeedbacks</span></span></a>,
<a class="citerefentry" href="glDeleteTransformFeedbacks.xhtml"><span class="citerefentry"><span class="refentrytitle">glDeleteTransformFeedbacks</span></span></a>,
<a class="citerefentry" href="glIsTransformFeedback.xhtml"><span class="citerefentry"><span class="refentrytitle">glIsTransformFeedback</span></span></a>,
<a class="citerefentry" href="glBeginTransformFeedback.xhtml"><span class="citerefentry"><span class="refentrytitle">glBeginTransformFeedback</span></span></a>,
<a class="citerefentry" href="glPauseTransformFeedback.xhtml"><span class="citerefentry"><span class="refentrytitle">glPauseTransformFeedback</span></span></a>,
<a class="citerefentry" href="glResumeTransformFeedback.xhtml"><span class="citerefentry"><span class="refentrytitle">glResumeTransformFeedback</span></span></a>,
<a class="citerefentry" href="glEndTransformFeedback.xhtml"><span class="citerefentry"><span class="refentrytitle">glEndTransformFeedback</span></span></a>
</p>
</div>
<div class="refsect1" id="Copyright">
<h2>Copyright</h2>
<p>
Copyright <span class="trademark"/>© 2010-2014 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="http://opencontent.org/openpub/" target="_top">http://opencontent.org/openpub/</a>.
</p>
</div>
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