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"refentry" title=
"glVertexAttribDivisor"><a id=
"glVertexAttribDivisor"></a><div class=
"titlepage"></div><div class=
"refnamediv"><h2>Name
</h2><p>glVertexAttribDivisor — modify the rate at which generic vertex attributes advance during instanced rendering
</p></div><div class=
"refsynopsisdiv" title=
"C Specification"><h2>C Specification
</h2><div class=
"funcsynopsis"><table border=
"0" summary=
"Function synopsis" cellspacing=
"0" cellpadding=
"0" class=
"funcprototype-table"><tr><td><code class=
"funcdef">void
<b class=
"fsfunc">glVertexAttribDivisor
</b>(
</code></td><td>GLuint
<var class=
"pdparam">index
</var>,
</td></tr><tr><td> </td><td>GLuint
<var class=
"pdparam">divisor
</var><code>)
</code>;
</td></tr></table><div class=
"funcprototype-spacer"> </div></div></div><div class=
"refsect1" title=
"Parameters"><a id=
"parameters"></a><h2>Parameters
</h2><div class=
"variablelist"><dl><dt><span class=
"term"><em class=
"parameter"><code>index
</code></em></span></dt><dd><p>
5 Specify the index of the generic vertex attribute.
6 </p></dd><dt><span class=
"term"><em class=
"parameter"><code>divisor
</code></em></span></dt><dd><p>
7 Specify the number of instances that will pass between updates of the generic attribute at slot
<em class=
"parameter"><code>index
</code></em>.
8 </p></dd></dl></div></div><div class=
"refsect1" title=
"Description"><a id=
"description"></a><h2>Description
</h2><p>
9 <code class=
"function">glVertexAttribDivisor
</code> modifies the rate at which generic vertex attributes advance when rendering
10 multiple instances of primitives in a single draw call. If
<em class=
"parameter"><code>divisor
</code></em> is zero, the attribute at slot
11 <em class=
"parameter"><code>index
</code></em> advances once per vertex. If
<em class=
"parameter"><code>divisor
</code></em> is non-zero, the attribute advances
12 once per
<em class=
"parameter"><code>divisor
</code></em> instances of the set(s) of vertices being rendered. An attribute
13 is referred to as instanced if its
<code class=
"constant">GL_VERTEX_ATTRIB_ARRAY_DIVISOR
</code> value is non-zero.
15 <em class=
"parameter"><code>index
</code></em> must be less than the value of
<code class=
"constant">GL_MAX_VERTEX_ATTRIBUTES
</code>.
16 </p></div><div class=
"refsect1" title=
"Notes"><a id=
"notes"></a><h2>Notes
</h2><p>
17 <code class=
"function">glVertexAttribDivisor
</code> is available only if the GL version is
3.3 or higher.
18 </p></div><div class=
"refsect1" title=
"Errors"><a id=
"errors"></a><h2>Errors
</h2><p>
19 <code class=
"constant">GL_INVALID_VALUE
</code> is generated if
<em class=
"parameter"><code>index
</code></em> is greater
20 than or equal to the value of
<code class=
"constant">GL_MAX_VERTEX_ATTRIBUTES
</code>.
21 </p></div><div class=
"refsect1" title=
"See Also"><a id=
"seealso"></a><h2>See Also
</h2><p>
22 <a class=
"citerefentry" href=
"glVertexAttribPointer.xml"><span class=
"citerefentry"><span class=
"refentrytitle">glVertexAttribPointer
</span></span></a>,
23 <a class=
"citerefentry" href=
"glEnableVertexAttribArray.xml"><span class=
"citerefentry"><span class=
"refentrytitle">glEnableVertexAttribArray
</span></span></a>,
24 <a class=
"citerefentry" href=
"glDisableVertexAttribArray.xml"><span class=
"citerefentry"><span class=
"refentrytitle">glDisableVertexAttribArray
</span></span></a>
25 </p></div><div class=
"refsect1" title=
"Copyright"><a id=
"Copyright"></a><h2>Copyright
</h2><p>
26 Copyright
<span class=
"trademark"></span>©
2010 Khronos Group.
27 This material may be distributed subject to the terms and conditions set forth in
28 the Open Publication License, v
1.0,
8 June
1999.
29 <a class=
"ulink" href=
"http://opencontent.org/openpub/" target=
"_top">http://opencontent.org/openpub/
</a>.
30 </p></div></div></body></html>