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3.3 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=
"glFlushMappedBufferRange"></a><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 border=
"0" summary=
"Function synopsis" cellspacing=
"0" cellpadding=
"0"><tr><td><code class=
"funcdef">void
<b class=
"fsfunc">glFlushMappedBufferRange
</b>(
</code></td><td>GLenum
</td><td><var class=
"pdparam">target
</var>,
</td></tr><tr><td> </td><td>GLintptr
</td><td><var class=
"pdparam">offset
</var>,
</td></tr><tr><td> </td><td>GLsizeiptr
</td><td><var class=
"pdparam">length
</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>target
</code></em></span></dt><dd><p>
5 Specifies the target of the flush operation.
<em class=
"parameter"><code>target
</code></em> must be
<code class=
"constant">GL_ARRAY_BUFFER
</code>,
6 <code class=
"constant">GL_COPY_READ_BUFFER
</code>,
<code class=
"constant">GL_COPY_WRITE_BUFFER
</code>,
<code class=
"constant">GL_ELEMENT_ARRAY_BUFFER
</code>,
7 <code class=
"constant">GL_PIXEL_PACK_BUFFER
</code>,
<code class=
"constant">GL_PIXEL_UNPACK_BUFFER
</code>,
<code class=
"constant">GL_TEXTURE_BUFFER
</code>,
8 <code class=
"constant">GL_TRANSFORM_FEEDBACK_BUFFER
</code>, or
<code class=
"constant">GL_UNIFORM_BUFFER
</code>.
9 </p></dd><dt><span class=
"term"><em class=
"parameter"><code>offset
</code></em></span></dt><dd><p>
10 Specifies the start of the buffer subrange, in basic machine units.
11 </p></dd><dt><span class=
"term"><em class=
"parameter"><code>length
</code></em></span></dt><dd><p>
12 Specifies the length of the buffer subrange, in basic machine units.
13 </p></dd></dl></div></div><div class=
"refsect1" lang=
"en" xml:
lang=
"en"><a id=
"description"></a><h2>Description
</h2><p>
14 <code class=
"function">glFlushMappedBufferRange
</code> indicates that modifications have been made to a range of a mapped buffer.
15 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>
16 and
<em class=
"parameter"><code>length
</code></em> indicate the modified subrange of the mapping, in basic units. The specified subrange to flush
17 is relative to the start of the currently mapped range of the buffer.
<code class=
"function">glFlushMappedBufferRange
</code> may be called
18 multiple times to indicate distinct subranges of the mapping which require flushing.
19 </p></div><div class=
"refsect1" lang=
"en" xml:
lang=
"en"><a id=
"errors"></a><h2>Errors
</h2><p>
20 <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>
21 is negative, or if
<em class=
"parameter"><code>offset
</code></em> +
<em class=
"parameter"><code>length
</code></em> exceeds the size of the mapping.
23 <code class=
"constant">GL_INVALID_OPERATION
</code> is generated if zero is bound to
<em class=
"parameter"><code>target
</code></em>.
25 <code class=
"constant">GL_INVALID_OPERATION
</code> is generated if the buffer bound to
<em class=
"parameter"><code>target
</code></em> is not
26 mapped, or is mapped without the
<code class=
"constant">GL_MAP_FLUSH_EXPLICIT
</code> flag.
27 </p></div><div class=
"refsect1" lang=
"en" xml:
lang=
"en"><a id=
"seealso"></a><h2>See Also
</h2><p>
28 <a href=
"glMapBufferRange.xml"><span class=
"citerefentry"><span class=
"refentrytitle">glMapBufferRange
</span></span></a>,
29 <a href=
"glMapBuffer.xml"><span class=
"citerefentry"><span class=
"refentrytitle">glMapBuffer
</span></span></a>,
30 <a href=
"glUnmapBuffer.xml"><span class=
"citerefentry"><span class=
"refentrytitle">glUnmapBuffer
</span></span></a>
31 </p></div><div class=
"refsect1" lang=
"en" xml:
lang=
"en"><a id=
"Copyright"></a><h2>Copyright
</h2><p>
32 Copyright
<span class=
"trademark"></span>©
2010 Khronos Group.
33 This material may be distributed subject to the terms and conditions set forth in
34 the Open Publication License, v
1.0,
8 June
1999.
35 <a href=
"http://opencontent.org/openpub/" target=
"_top">http://opencontent.org/openpub/
</a>.
36 </p></div></div></body></html>
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