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<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<!DOCTYPE html><html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>glGetVertexArrayIndexed - OpenGL 4 Reference Pages</title>
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<div class="refentry" id="glGetVertexArrayIndexed">
<div class="titlepage"/>
<div class="refnamediv">
<h2>Name</h2>
<p>glGetVertexArrayIndexed — retrieve parameters of an attribute of a vertex array
object</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">void <strong class="fsfunc">glGetVertexArrayIndexed64iv</strong>(</code>
</td>
<td>GLuint <var class="pdparam">vaobj</var>, </td>
</tr>
<tr>
<td> </td>
<td>GLuint <var class="pdparam">index</var>, </td>
</tr>
<tr>
<td> </td>
<td>GLenum <var class="pdparam">pname</var>, </td>
</tr>
<tr>
<td> </td>
<td>GLint64 *<var class="pdparam">param</var><code>)</code>;</td>
</tr>
</table>
<div class="funcprototype-spacer"> </div>
</div>
<div class="funcsynopsis">
<table style="border: 0; cellspacing: 0; cellpadding: 0;" class="funcprototype-table">
<tr>
<td>
<code class="funcdef">void <strong class="fsfunc">glGetVertexArrayIndexediv</strong>(</code>
</td>
<td>GLuint <var class="pdparam">vaobj</var>, </td>
</tr>
<tr>
<td> </td>
<td>GLuint <var class="pdparam">index</var>, </td>
</tr>
<tr>
<td> </td>
<td>GLenum <var class="pdparam">pname</var>, </td>
</tr>
<tr>
<td> </td>
<td>GLint *<var class="pdparam">param</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>vaobj</code>
</em>
</span>
</dt>
<dd>
<p>Specifies the name of a vertex array object.</p>
</dd>
<dt>
<span class="term">
<em class="parameter">
<code>index</code>
</em>
</span>
</dt>
<dd>
<p>Specifies the index of the vertex array object attribute. Must
be a number between 0 and
(<code class="constant">GL_MAX_VERTEX_ATTRIBS</code> - 1).</p>
</dd>
<dt>
<span class="term">
<em class="parameter">
<code>pname</code>
</em>
</span>
</dt>
<dd>
<p>Specifies the property to be used for the query. For
<code class="function">glGetVertexArrayIndexediv</code>, it must be one of
the following values:
<code class="constant">GL_VERTEX_ATTRIB_ARRAY_ENABLED</code>,
<code class="constant">GL_VERTEX_ATTRIB_ARRAY_SIZE</code>,
<code class="constant">GL_VERTEX_ATTRIB_ARRAY_STRIDE</code>,
<code class="constant">GL_VERTEX_ATTRIB_ARRAY_TYPE</code>,
<code class="constant">GL_VERTEX_ATTRIB_ARRAY_NORMALIZED</code>,
<code class="constant">GL_VERTEX_ATTRIB_ARRAY_INTEGER</code>,
<code class="constant">GL_VERTEX_ATTRIB_ARRAY_LONG</code>,
<code class="constant">GL_VERTEX_ATTRIB_ARRAY_DIVISOR</code>, or
<code class="constant">GL_VERTEX_ATTRIB_RELATIVE_OFFSET</code>. For
<code class="function">glGetVertexArrayIndexed64v</code>, it must be equal to
<code class="constant">GL_VERTEX_BINDING_OFFSET</code>.</p>
</dd>
<dt>
<span class="term">
<em class="parameter">
<code>param</code>
</em>
</span>
</dt>
<dd>
<p>Returns the requested value.</p>
</dd>
</dl>
</div>
</div>
<div class="refsect1" id="description">
<h2>Description</h2>
<p><code class="function">glGetVertexArrayIndexediv</code> and
<code class="function">glGetVertexArrayIndexed64iv</code> provide a way of querying
parameters of an attribute at an user-specified index of a vertex array
object. The vertex array object does not have to be bound to the rendering
context at the time of the call, but must have been bound at least once
prior to this call.</p>
<p>The following parameter values can be retrieved with
<code class="function">glGetVertexArrayIndexediv</code> for each of the attributes
defined for a vertex array object:</p>
<div class="itemizedlist">
<ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem">
<p><code class="constant">GL_VERTEX_ATTRIB_ARRAY_ENABLED</code>:
<em class="parameter"><code>param</code></em> returns a value that is non-zero (true)
if the vertex attribute array for index is enabled and 0 (false) if
it is disabled. The initial value is
<code class="constant">GL_FALSE</code>.</p>
</li>
<li class="listitem">
<p><code class="constant">GL_VERTEX_ATTRIB_ARRAY_SIZE</code>:
<em class="parameter"><code>param</code></em> returns a single value, the size of the
vertex attribute array for index. The size is the number of values
for each element of the vertex attribute array, and it will be 1, 2,
3 or 4. The initial value is 4.</p>
</li>
<li class="listitem">
<p><code class="constant">GL_VERTEX_ATTRIB_ARRAY_STRIDE</code>:
<em class="parameter"><code>param</code></em> returns a single value, the array
stride for (number of bytes between successive elements in) the
vertex attribute array for index. A value of 0 indicates the array
elements are stored sequentially in memory. The initial value is
0.</p>
</li>
<li class="listitem">
<p><code class="constant">GL_VERTEX_ATTRIB_ARRAY_TYPE</code>:
<em class="parameter"><code>param</code></em> returns a single value, a symbolic
constant indicating the array type for the vertex attribute array
for index. Possible values are <code class="constant">GL_BYTE</code>,
<code class="constant">GL_DOUBLE</code>, <code class="constant">GL_FIXED</code>,
<code class="constant">GL_FLOAT</code>, <code class="constant">GL_HALF_FLOAT</code>,
<code class="constant">GL_INT</code>,
<code class="constant">GL_INT_2_10_10_10_REV</code>,
<code class="constant">GL_SHORT</code>,
<code class="constant">GL_UNSIGNED_BYTE</code>,
<code class="constant">GL_UNSIGNED_SHORT</code>,
<code class="constant">GL_UNSIGNED_INT</code>,
<code class="constant">GL_UNSIGNED_INT_2_10_10_10_REV</code>, and
<code class="constant">GL_UNSIGNED_INT_10F_11F_11F_REV</code> . The initial
value is <code class="constant">GL_FLOAT</code>.</p>
</li>
<li class="listitem">
<p><code class="constant">GL_VERTEX_ATTRIB_ARRAY_NORMALIZED</code>:
<em class="parameter"><code>param</code></em> returns a single value that is non-zero
(true) if fixed-point data types for the vertex attribute array
indicated by index are normalized when they are converted to
floating-point, and 0 (false) otherwise. The initial value is
<code class="constant">GL_FALSE</code>.</p>
</li>
<li class="listitem">
<p><code class="constant">GL_VERTEX_ATTRIB_ARRAY_INTEGER</code>:
<em class="parameter"><code>param</code></em> returns a single value that is non-zero
(true) if fixed-point data types for the vertex attribute array
indicated by index have integer data type, and 0 (false) otherwise.
The initial value is 0 (<code class="constant">GL_FALSE</code>).</p>
</li>
<li class="listitem">
<p><code class="constant">GL_VERTEX_ATTRIB_ARRAY_LONG</code>:
<em class="parameter"><code>param</code></em> returns a single value that is non-zero
(true) if a vertex attribute is stored as an unconverted double, and
0 (false) otherwise. The initial value is 0
(<code class="constant">GL_FALSE</code>).</p>
</li>
<li class="listitem">
<p><code class="constant">GL_VERTEX_ATTRIB_ARRAY_DIVISOR</code>:
<em class="parameter"><code>param</code></em> returns a single value that is the
frequency divisor used for instanced rendering. See
glVertexAttribDivisor. The initial value is 0.</p>
</li>
<li class="listitem">
<p><code class="constant">GL_VERTEX_ATTRIB_RELATIVE_OFFSET</code>:
<em class="parameter"><code>param</code></em> returns a single value that is the byte
offset of the first element relative to the start of the vertex
buffer binding specified attribute fetches from. The initial value
is 0.</p>
</li>
</ul>
</div>
<p><code class="function">glGetVertexArrayIndexed64iv</code> can be
used to retrieve <code class="constant">GL_VERTEX_BINDING_OFFSET</code> parameter
value for any of the attributes defined for a vertex array object. When
<em class="parameter"><code>pname</code></em> is set to
<code class="constant">GL_VERTEX_BINDING_OFFSET</code>,
<em class="parameter"><code>param</code></em> returns a single value that is the byte
offset of the first element in the bound buffer's data store. The initial
value for this parameter is 0.</p>
</div>
<div class="refsect1" id="errors">
<h2>Errors</h2>
<p><code class="constant">GL_INVALID_OPERATION</code> error is generated if
<em class="parameter"><code>vaobj</code></em> is not the name of an existing vertex array
object.</p>
<p><code class="constant">GL_INVALID_VALUE</code> error is generated if index is
greater than or equal to the value of
<code class="constant">GL_MAX_VERTEX_ATTRIBS</code>.</p>
<p><code class="constant">GL_INVALID_ENUM</code> error is generated if
<em class="parameter"><code>pname</code></em> is not one of the valid values. For more
details, please see above.</p>
</div>
<div class="refsect1" id="versions">
<h2>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; "/>
<col style="text-align: center; "/>
<col style="text-align: center; "/>
<col style="text-align: center; "/>
<col style="text-align: center; "/>
<col style="text-align: center; "/>
<col style="text-align: center; "/>
<col style="text-align: center; "/>
<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="12">
<span class="bold"><strong>OpenGL Version</strong></span>
</th>
</tr>
<tr>
<th style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">
<span class="bold"><strong>Function / Feature 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>2.1</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-right: 2px solid ; border-bottom: 2px solid ; ">
<span class="bold"><strong>3.1</strong></span>
</th>
<th style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">
<span class="bold"><strong>3.2</strong></span>
</th>
<th style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">
<span class="bold"><strong>3.3</strong></span>
</th>
<th style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">
<span class="bold"><strong>4.0</strong></span>
</th>
<th style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">
<span class="bold"><strong>4.1</strong></span>
</th>
<th style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">
<span class="bold"><strong>4.2</strong></span>
</th>
<th style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">
<span class="bold"><strong>4.3</strong></span>
</th>
<th style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">
<span class="bold"><strong>4.4</strong></span>
</th>
<th style="text-align: center; border-bottom: 2px solid ; ">
<span class="bold"><strong>4.5</strong></span>
</th>
</tr>
</thead>
<tbody>
<tr>
<td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">
<code class="function">glGetVertexArrayIndexed64iv</code>
</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">-</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">-</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">-</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">-</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">-</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">-</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">-</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">-</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">-</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">-</td>
<td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">-</td>
<td style="text-align: center; border-bottom: 2px solid ; ">✔</td>
</tr>
<tr>
<td style="text-align: left; border-right: 2px solid ; ">
<code class="function">glGetVertexArrayIndexediv</code>
</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; border-right: 2px solid ; ">-</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; border-right: 2px solid ; ">-</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; border-right: 2px solid ; ">-</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="glGetVertexAttrib.xhtml"><span class="citerefentry"><span class="refentrytitle">glGetVertexAttrib</span></span></a>, <a class="citerefentry" href="glVertexAttribBinding.xhtml"><span class="citerefentry"><span class="refentrytitle">glVertexAttribBinding</span></span></a>, <a class="citerefentry" href="glVertexAttribIPointer.xhtml"><span class="citerefentry"><span class="refentrytitle">glVertexAttribIPointer</span></span></a>, <a class="citerefentry" href="glVertexAttribLPointer.xhtml"><span class="citerefentry"><span class="refentrytitle">glVertexAttribLPointer</span></span></a>, <a class="citerefentry" href="glVertexAttribPointer.xhtml"><span class="citerefentry"><span class="refentrytitle">glVertexAttribPointer</span></span></a></p>
</div>
<div class="refsect1" id="Copyright">
<h2>Copyright</h2>
<p>
Copyright <span class="trademark"/>© 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="http://opencontent.org/openpub/" target="_top">http://opencontent.org/openpub/</a>.
</p>
</div>
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<footer/>
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