<div class="refentry" id="glFlushMappedBufferRange">

<div class="titlepage"></div>

<div class="refnamediv">

<h2>Name</h2>

<p>glFlushMappedBufferRange — indicate modifications to a range of a mapped buffer</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">GLsync <strong class="fsfunc">glFlushMappedBufferRange</strong>(</code>

</td>

<td>GLenum <var class="pdparam">target</var>, </td>

</tr>

<tr>

<td> </td>

<td>GLintptr <var class="pdparam">offset</var>, </td>

</tr>

<tr>

<td> </td>

<td>GLsizeiptr <var class="pdparam">length</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 of the flush operation. <em class="parameter"><code>target</code></em> must be <code class="constant">GL_ARRAY_BUFFER</code>,

<code class="constant">GL_COPY_READ_BUFFER</code>, <code class="constant">GL_COPY_WRITE_BUFFER</code>, <code class="constant">GL_ELEMENT_ARRAY_BUFFER</code>,

<code class="constant">GL_PIXEL_PACK_BUFFER</code>, <code class="constant">GL_PIXEL_UNPACK_BUFFER</code>,

<code class="constant">GL_TRANSFORM_FEEDBACK_BUFFER</code>, or <code class="constant">GL_UNIFORM_BUFFER</code>.

</p>

</dd>

<dt>

<span class="term">

<em class="parameter">

<code>offset</code>

</em>

</span>

</dt>

<dd>

<p>

Specifies the start of the buffer subrange, in basic machine units.

</p>

</dd>

<dt>

<span class="term">

<em class="parameter">

<code>length</code>

</em>

</span>

</dt>

<dd>

<p>

Specifies the length of the buffer subrange, in basic machine units.

</p>

</dd>

</dl>

</div>

</div>

<div class="refsect1" id="description">

<h2>Description</h2>

<p>

<code class="function">glFlushMappedBufferRange</code> indicates that modifications have been made to a range of a mapped buffer.

The buffer must previously have been mapped with the <code class="constant">GL_MAP_FLUSH_EXPLICIT</code> flag. <em class="parameter"><code>offset</code></em>

and <em class="parameter"><code>length</code></em> indicate the modified subrange of the mapping, in basic units. The specified subrange to flush

is relative to the start of the currently mapped range of the buffer. <code class="function">glFlushMappedBufferRange</code> may be called

multiple times to indicate distinct subranges of the mapping which require flushing.

</p>

</div>

<div class="refsect1" id="errors">

<h2>Errors</h2>

<p>

<code class="constant">GL_INVALID_VALUE</code> is generated if <em class="parameter"><code>offset</code></em> or <em class="parameter"><code>length</code></em>

is negative, or if <em class="parameter"><code>offset</code></em> + <em class="parameter"><code>length</code></em> exceeds the size of the mapping.

</p>

<p>

<code class="constant">GL_INVALID_OPERATION</code> is generated if zero is bound to <em class="parameter"><code>target</code></em>.

</p>

<p>

<code class="constant">GL_INVALID_OPERATION</code> is generated if the buffer bound to <em class="parameter"><code>target</code></em> is not

mapped, or is mapped without the <code class="constant">GL_MAP_FLUSH_EXPLICIT</code> flag.

</p>

</div>

{$pipelinestall}{$examples}

<div class="refsect1" id="versions">

<h2>API 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; " 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="3">

<span class="bold"><strong>OpenGL ES API 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>2.0</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-bottom: 2px solid ; ">

<span class="bold"><strong>3.1</strong></span>

</th>

</tr>

</thead>

<tbody>

<tr>

<td style="text-align: left; border-right: 2px solid ; ">glFlushMappedBufferRange</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="glMapBufferRange"><span class="citerefentry"><span class="refentrytitle">glMapBufferRange</span></span></a>,

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

</p>

</div>

<div class="refsect1" id="Copyright">

<h2>Copyright</h2>

<p>

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

</p>

</div>

</div>