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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=
"glClearBufferData"></a><div class=
"titlepage"></div><div class=
"refnamediv"><h2>Name
</h2><p>glClearBufferData — fill a buffer object's data store with a fixed value
</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">glClearBufferData
</b>(
</code></td><td>GLenum
</td><td><var class=
"pdparam">target
</var>,
</td></tr><tr><td> </td><td>GLenum
</td><td><var class=
"pdparam">internalformat
</var>,
</td></tr><tr><td> </td><td>GLenum
</td><td><var class=
"pdparam">format
</var>,
</td></tr><tr><td> </td><td>GLenum
</td><td><var class=
"pdparam">type
</var>,
</td></tr><tr><td> </td><td>const void *
</td><td><var class=
"pdparam">data
</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 Specify the target of the operation.
<em class=
"parameter"><code>target
</code></em> must be
6 one of the global buffer binding targets.
7 </p></dd><dt><span class=
"term"><em class=
"parameter"><code>internalformat
</code></em></span></dt><dd><p>
8 The internal format with which the data will be stored in the buffer object.
9 </p></dd><dt><span class=
"term"><em class=
"parameter"><code>size
</code></em></span></dt><dd><p>
10 The size, in basic machine units of the range of the data store to fill.
11 </p></dd><dt><span class=
"term"><em class=
"parameter"><code>format
</code></em></span></dt><dd><p>
12 The format of the data in memory addressed by
<em class=
"parameter"><code>data
</code></em>.
13 </p></dd><dt><span class=
"term"><em class=
"parameter"><code>type
</code></em></span></dt><dd><p>
14 The type of the data in memory addressed by
<em class=
"parameter"><code>data
</code></em>.
15 </p></dd><dt><span class=
"term"><em class=
"parameter"><code>data
</code></em></span></dt><dd><p>
16 The address of a memory location storing the data to be replicated into the
18 </p></dd></dl></div></div><div class=
"refsect1" lang=
"en" xml:
lang=
"en"><a id=
"description"></a><h2>Description
</h2><p>
19 <code class=
"function">glClearBufferData
</code> fills the entirety of a buffer object's
20 data store with data from client memory. Data, initially supplied in a format
21 specified by
<em class=
"parameter"><code>format
</code></em> in data type
<em class=
"parameter"><code>type
</code></em> is
22 read from the memory address given by
<em class=
"parameter"><code>data
</code></em> and converted into
23 the internal representation given by
<em class=
"parameter"><code>internalforamt
</code></em>.
24 This converted data is then replicated throughout the buffer object's
27 If
<em class=
"parameter"><code>data
</code></em> is NULL, then the buffer's data store
29 </p></div><div class=
"refsect1" lang=
"en" xml:
lang=
"en"><a id=
"errors"></a><h2>Errors
</h2><p>
30 <code class=
"constant">GL_INVALID_ENUM
</code> is generated if
<em class=
"parameter"><code>target
</code></em> not one of the generic buffer binding targets.
32 <code class=
"constant">GL_INVALID_VALUE
</code> is generated if no buffer is bound to
<em class=
"parameter"><code>target
</code></em>.
34 <code class=
"constant">GL_INVALID_ENUM
</code> is generated if
<em class=
"parameter"><code>internalformat
</code></em> is not a sized internal format.
36 <code class=
"constant">GL_INVALID_OPERATION
</code> is generated if any part of the buffer's data store is
37 mapped with
<a href=
"glMapBufferRange.xml"><span class=
"citerefentry"><span class=
"refentrytitle">glMapBufferRange
</span></span></a> or
<a href=
"glMapBuffer..xml"><span class=
"citerefentry"><span class=
"refentrytitle">glMapBuffer.
</span></span></a>
38 </p></div><div class=
"refsect1" lang=
"en" xml:
lang=
"en"><a id=
"seealso"></a><h2>See Also
</h2><p>
39 <a href=
"glClearBufferSubData.xml"><span class=
"citerefentry"><span class=
"refentrytitle">glClearBufferSubData
</span></span></a>.
40 </p></div><div class=
"refsect1" lang=
"en" xml:
lang=
"en"><a id=
"Copyright"></a><h2>Copyright
</h2><p>
41 Copyright
<span class=
"trademark"></span>©
2011-
2012 Khronos Group.
42 This material may be distributed subject to the terms and conditions set forth in
43 the Open Publication License, v
1.0,
8 June
1999.
44 <a href=
"http://opencontent.org/openpub/" target=
"_top">http://opencontent.org/openpub/
</a>.
45 </p></div></div></body></html>