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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=
"glInvalidateBufferSubData"></a><div class=
"titlepage"></div><div class=
"refnamediv"><h2>Name
</h2><p>glInvalidateBufferSubData — invalidate a region of a buffer object's data store
</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">glInvalidateBufferSubData
</b>(
</code></td><td>GLuint
</td><td><var class=
"pdparam">buffer
</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>buffer
</code></em></span></dt><dd><p>
5 The name of a buffer object, a subrange of whose data store to invalidate.
6 </p></dd><dt><span class=
"term"><em class=
"parameter"><code>offset
</code></em></span></dt><dd><p>
7 The offset within the buffer's data store of the start of the range to be invalidated.
8 </p></dd><dt><span class=
"term"><em class=
"parameter"><code>length
</code></em></span></dt><dd><p>
9 The length of the range within the buffer's data store to be invalidated.
10 </p></dd></dl></div></div><div class=
"refsect1" lang=
"en" xml:
lang=
"en"><a id=
"description"></a><h2>Description
</h2><p>
11 <code class=
"function">glInvalidateBufferSubData
</code> invalidates all or part of the
12 content of the data store of a buffer object. After invalidation, the content
13 of the specified range of the buffer's data store becomes undefined. The
14 start of the range is given by
<em class=
"parameter"><code>offset
</code></em> and its size
15 is given by
<em class=
"parameter"><code>length
</code></em>, both measured in basic machine units.
16 </p></div><div class=
"refsect1" lang=
"en" xml:
lang=
"en"><a id=
"errors"></a><h2>Errors
</h2><p>
17 <code class=
"constant">GL_INVALID_VALUE
</code> is generated if
<em class=
"parameter"><code>offset
</code></em> or
18 <em class=
"parameter"><code>length
</code></em> is negative, or if
<em class=
"parameter"><code>offset
</code></em> +
19 <em class=
"parameter"><code>length
</code></em> is greater than the value of
<code class=
"constant">GL_BUFFER_SIZE
</code>
20 for
<em class=
"parameter"><code>buffer
</code></em>.
22 <code class=
"constant">GL_INVALID_VALUE
</code> is generated if
<em class=
"parameter"><code>buffer
</code></em> is not the
23 name of an existing buffer object.
25 <code class=
"constant">GL_INVALID_OPERATION
</code> is generated if any part of
<em class=
"parameter"><code>buffer
</code></em>
27 </p></div><div class=
"refsect1" lang=
"en" xml:
lang=
"en"><a id=
"associatedgets"></a><h2>Associated Gets
</h2><p>
28 <a href=
"glGetBufferParameter.xml"><span class=
"citerefentry"><span class=
"refentrytitle">glGetBufferParameter
</span></span></a> with argument
<code class=
"constant">GL_BUFFER_SIZE
</code>
29 </p></div><div class=
"refsect1" lang=
"en" xml:
lang=
"en"><a id=
"seealso"></a><h2>See Also
</h2><p>
30 <a href=
"glInvalidateTexSubImage.xml"><span class=
"citerefentry"><span class=
"refentrytitle">glInvalidateTexSubImage
</span></span></a>,,
31 <a href=
"glInvalidateTexImage.xml"><span class=
"citerefentry"><span class=
"refentrytitle">glInvalidateTexImage
</span></span></a>,
32 <a href=
"glInvalidateBufferData.xml"><span class=
"citerefentry"><span class=
"refentrytitle">glInvalidateBufferData
</span></span></a>,
33 <a href=
"glInvalidateFramebuffer.xml"><span class=
"citerefentry"><span class=
"refentrytitle">glInvalidateFramebuffer
</span></span></a>,
34 <a href=
"glInvalidateSubFramebuffer.xml"><span class=
"citerefentry"><span class=
"refentrytitle">glInvalidateSubFramebuffer
</span></span></a>.
35 </p></div><div class=
"refsect1" lang=
"en" xml:
lang=
"en"><a id=
"Copyright"></a><h2>Copyright
</h2><p>
36 Copyright
<span class=
"trademark"></span>©
2012 Khronos Group.
37 This material may be distributed subject to the terms and conditions set forth in
38 the Open Publication License, v
1.0,
8 June
1999.
39 <a href=
"http://opencontent.org/openpub/" target=
"_top">http://opencontent.org/openpub/
</a>.
40 </p></div></div></body></html>