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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>glBeginQueryIndexed, glEndQueryIndexed - OpenGL 4 Reference Pages</title>
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<header/>
<div class="refentry" id="glBeginQueryIndexed">
<div class="titlepage"/>
<div class="refnamediv">
<h2>Name</h2>
<p>glBeginQueryIndexed, glEndQueryIndexed — delimit the boundaries of a query object on an indexed target</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">glBeginQueryIndexed</strong>(</code>
</td>
<td>GLenum <var class="pdparam">target</var>, </td>
</tr>
<tr>
<td> </td>
<td>GLuint <var class="pdparam">index</var>, </td>
</tr>
<tr>
<td> </td>
<td>GLuint <var class="pdparam">id</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">glEndQueryIndexed</strong>(</code>
</td>
<td>GLenum <var class="pdparam">target</var>, </td>
</tr>
<tr>
<td> </td>
<td>GLuint <var class="pdparam">index</var><code>)</code>;</td>
</tr>
</table>
<div class="funcprototype-spacer"> </div>
</div>
</div>
<div class="refsect1" id="parameters">
<h2>Parameters for <code class="function">glBeginQueryIndexed</code></h2>
<div class="variablelist">
<dl class="variablelist">
<dt>
<span class="term">
<em class="parameter">
<code>target</code>
</em>
</span>
</dt>
<dd>
<p>
Specifies the target type of query object established between
<code class="function">glBeginQueryIndexed</code> and the subsequent <a class="citerefentry" href="glEndQueryIndexed.xhtml"><span class="citerefentry"><span class="refentrytitle">glEndQueryIndexed</span></span></a>.
The symbolic constant must be one of <code class="constant">GL_SAMPLES_PASSED</code>, <code class="constant">GL_ANY_SAMPLES_PASSED</code>,
<code class="constant">GL_PRIMITIVES_GENERATED</code>, <code class="constant">GL_TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN</code>, or
<code class="constant">GL_TIME_ELAPSED</code>.
</p>
</dd>
<dt>
<span class="term">
<em class="parameter">
<code>index</code>
</em>
</span>
</dt>
<dd>
<p>
Specifies the index of the query target upon which to begin the query.
</p>
</dd>
<dt>
<span class="term">
<em class="parameter">
<code>id</code>
</em>
</span>
</dt>
<dd>
<p>
Specifies the name of a query object.
</p>
</dd>
</dl>
</div>
</div>
<div class="refsect1" id="parameters2">
<h2>Parameters for <code class="function">glEndQueryIndexed</code></h2>
<div class="variablelist">
<dl class="variablelist">
<dt>
<span class="term">
<em class="parameter">
<code>target</code>
</em>
</span>
</dt>
<dd>
<p>
Specifies the target type of query object to be concluded.
The symbolic constant must be one of <code class="constant">GL_SAMPLES_PASSED</code>, <code class="constant">GL_ANY_SAMPLES_PASSED</code>,
<code class="constant">GL_PRIMITIVES_GENERATED</code>, <code class="constant">GL_TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN</code>, or
<code class="constant">GL_TIME_ELAPSED</code>.
</p>
</dd>
<dt>
<span class="term">
<em class="parameter">
<code>index</code>
</em>
</span>
</dt>
<dd>
<p>
Specifies the index of the query target upon which to end the query.
</p>
</dd>
</dl>
</div>
</div>
<div class="refsect1" id="description">
<h2>Description</h2>
<p>
<code class="function">glBeginQueryIndexed</code> and <a class="citerefentry" href="glEndQueryIndexed.xhtml"><span class="citerefentry"><span class="refentrytitle">glEndQueryIndexed</span></span></a> delimit the
boundaries of a query object. <em class="parameter"><code>query</code></em> must be a name previously returned from a call to
<a class="citerefentry" href="glGenQueries.xhtml"><span class="citerefentry"><span class="refentrytitle">glGenQueries</span></span></a>. If a query object with name <em class="parameter"><code>id</code></em>
does not yet exist it is created with the type determined by <em class="parameter"><code>target</code></em>. <em class="parameter"><code>target</code></em> must
be one of <code class="constant">GL_SAMPLES_PASSED</code>, <code class="constant">GL_ANY_SAMPLES_PASSED</code>, <code class="constant">GL_PRIMITIVES_GENERATED</code>,
<code class="constant">GL_TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN</code>, or <code class="constant">GL_TIME_ELAPSED</code>. The behavior of the query
object depends on its type and is as follows.
</p>
<p>
<em class="parameter"><code>index</code></em> specifies the index of the query target and must be between a <em class="parameter"><code>target</code></em>-specific
maximum.
</p>
<p>
If <em class="parameter"><code>target</code></em> is <code class="constant">GL_SAMPLES_PASSED</code>, <em class="parameter"><code>id</code></em> must be an unused name,
or the name of an existing occlusion query object.
When <code class="function">glBeginQueryIndexed</code> is executed, the query object's samples-passed counter is reset to 0. Subsequent
rendering will increment the counter for every sample that passes the depth test. If the value of <code class="constant">GL_SAMPLE_BUFFERS</code>
is 0, then the samples-passed count is incremented by 1 for each fragment. If the value of <code class="constant">GL_SAMPLE_BUFFERS</code>
is 1, then the samples-passed count is incremented by the number of samples whose coverage bit is set. However, implementations, at their
discression may instead increase the samples-passed count by the value of <code class="constant">GL_SAMPLES</code> if any sample in the fragment
is covered. When <code class="function">glEndQueryIndexed</code>
is executed, the samples-passed counter is assigned to the query object's result value. This value can be queried by
calling <a class="citerefentry" href="glGetQueryObject.xhtml"><span class="citerefentry"><span class="refentrytitle">glGetQueryObject</span></span></a> with <em class="parameter"><code>pname</code></em>
<code class="constant">GL_QUERY_RESULT</code>.
When <em class="parameter"><code>target</code></em> is <code class="constant">GL_SAMPLES_PASSED</code>, <em class="parameter"><code>index</code></em> must be zero.
</p>
<p>
If <em class="parameter"><code>target</code></em> is <code class="constant">GL_ANY_SAMPLES_PASSED</code>, <em class="parameter"><code>id</code></em> must be an unused name,
or the name of an existing boolean occlusion query object.
When <code class="function">glBeginQueryIndexed</code> is executed, the query object's samples-passed flag is reset to <code class="constant">GL_FALSE</code>.
Subsequent rendering causes the flag to be set to <code class="constant">GL_TRUE</code> if any sample passes the depth test. When
<code class="function">glEndQueryIndexed</code> is executed, the samples-passed flag is assigned to the query object's result value. This value can
be queried by calling <a class="citerefentry" href="glGetQueryObject.xhtml"><span class="citerefentry"><span class="refentrytitle">glGetQueryObject</span></span></a> with <em class="parameter"><code>pname</code></em>
<code class="constant">GL_QUERY_RESULT</code>.
When <em class="parameter"><code>target</code></em> is <code class="constant">GL_ANY_SAMPLES_PASSED</code>, <em class="parameter"><code>index</code></em> must be zero.
</p>
<p>
If <em class="parameter"><code>target</code></em> is <code class="constant">GL_PRIMITIVES_GENERATED</code>, <em class="parameter"><code>id</code></em> must be an unused
name, or the name of an existing primitive query object previously bound to the <code class="constant">GL_PRIMITIVES_GENERATED</code> query binding.
When <code class="function">glBeginQueryIndexed</code> is executed, the query object's primitives-generated counter is reset to 0. Subsequent
rendering will increment the counter once for every vertex that is emitted from the geometry shader to the stream given by <em class="parameter"><code>index</code></em>,
or from the vertex shader if <em class="parameter"><code>index</code></em> is zero and no geometry shader is present.
When <code class="function">glEndQueryIndexed</code> is executed, the primitives-generated counter for stream <em class="parameter"><code>index</code></em> is assigned to
the query object's result value. This value can be queried by calling <a class="citerefentry" href="glGetQueryObject.xhtml"><span class="citerefentry"><span class="refentrytitle">glGetQueryObject</span></span></a>
with <em class="parameter"><code>pname</code></em> <code class="constant">GL_QUERY_RESULT</code>.
When <em class="parameter"><code>target</code></em> is <code class="constant">GL_PRIMITIVES_GENERATED</code>, <em class="parameter"><code>index</code></em> must be
less than the value of <code class="constant">GL_MAX_VERTEX_STREAMS</code>.
</p>
<p>
If <em class="parameter"><code>target</code></em> is <code class="constant">GL_TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN</code>, <em class="parameter"><code>id</code></em> must be
an unused name, or the name of an existing primitive query object previously bound to the <code class="constant">GL_TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN</code>
query binding. When <code class="function">glBeginQueryIndexed</code> is executed, the query object's primitives-written counter for the stream specified by
<em class="parameter"><code>index</code></em> is reset to 0. Subsequent rendering will increment the counter once for every vertex that is written into the bound
transform feedback buffer(s) for stream <em class="parameter"><code>index</code></em>. If transform feedback
mode is not activated between the call to <code class="function">glBeginQueryIndexed</code> and <code class="function">glEndQueryIndexed</code>, the counter will not be
incremented. When <code class="function">glEndQueryIndexed</code> is executed, the primitives-written counter for stream <em class="parameter"><code>index</code></em> is assigned to
the query object's result value. This value can be queried by calling <a class="citerefentry" href="glGetQueryObject.xhtml"><span class="citerefentry"><span class="refentrytitle">glGetQueryObject</span></span></a> with <em class="parameter"><code>pname</code></em>
<code class="constant">GL_QUERY_RESULT</code>.
When <em class="parameter"><code>target</code></em> is <code class="constant">GL_TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN</code>, <em class="parameter"><code>index</code></em> must be
less than the value of <code class="constant">GL_MAX_VERTEX_STREAMS</code>.
</p>
<p>
If <em class="parameter"><code>target</code></em> is <code class="constant">GL_TIME_ELAPSED</code>, <em class="parameter"><code>id</code></em> must be
an unused name, or the name of an existing timer query object previously bound to the <code class="constant">GL_TIME_ELAPSED</code>
query binding. When <code class="function">glBeginQueryIndexed</code> is executed, the query object's time counter is reset to 0. When <code class="function">glEndQueryIndexed</code>
is executed, the elapsed server time that has passed since the call to <code class="function">glBeginQueryIndexed</code> is written into the query object's
time counter. This value can be queried by calling <a class="citerefentry" href="glGetQueryObject.xhtml"><span class="citerefentry"><span class="refentrytitle">glGetQueryObject</span></span></a> with <em class="parameter"><code>pname</code></em>
<code class="constant">GL_QUERY_RESULT</code>.
When <em class="parameter"><code>target</code></em> is <code class="constant">GL_TIME_ELAPSED</code>, <em class="parameter"><code>index</code></em> must be zero.
</p>
<p>
Querying the <code class="constant">GL_QUERY_RESULT</code> implicitly flushes the GL pipeline until the rendering delimited by the
query object has completed and the result is available. <code class="constant">GL_QUERY_RESULT_AVAILABLE</code> can be queried to
determine if the result is immediately available or if the rendering is not yet complete.
</p>
</div>
<div class="refsect1" id="notes">
<h2>Notes</h2>
<p>
If the query target's count exceeds the maximum value representable in the number of available bits, as reported by
<a class="citerefentry" href="glGetQueryiv.xhtml"><span class="citerefentry"><span class="refentrytitle">glGetQueryiv</span></span></a> with <em class="parameter"><code>target</code></em> set to the
appropriate query target and <em class="parameter"><code>pname</code></em>
<code class="constant">GL_QUERY_COUNTER_BITS</code>, the count becomes undefined.
</p>
<p>
An implementation may support 0 bits in its counter, in which case query results are always undefined
and essentially useless.
</p>
<p>
When <code class="constant">GL_SAMPLE_BUFFERS</code> is 0, the samples-passed counter of an occlusion query will increment once for each
fragment that passes the depth test. When <code class="constant">GL_SAMPLE_BUFFERS</code> is 1, an implementation may either increment
the samples-passed counter individually for each sample of a fragment that passes the depth test, or it may choose to increment
the counter for all samples of a fragment if any one of them passes the depth test.
</p>
<p>
Calling <a class="citerefentry" href="glBeginQuery.xhtml"><span class="citerefentry"><span class="refentrytitle">glBeginQuery</span></span></a> or
<a class="citerefentry" href="glEndQuery.xhtml"><span class="citerefentry"><span class="refentrytitle">glEndQuery</span></span></a> is equivalent to
calling <a class="citerefentry" href="glBeginQueryIndexed.xhtml"><span class="citerefentry"><span class="refentrytitle">glBeginQueryIndexed</span></span></a> or
<a class="citerefentry" href="glEndQueryIndexed.xhtml"><span class="citerefentry"><span class="refentrytitle">glEndQueryIndexed</span></span></a> with
<em class="parameter"><code>index</code></em> set to zero, respectively.
</p>
</div>
<div class="refsect1" id="errors">
<h2>Errors</h2>
<p>
<code class="constant">GL_INVALID_ENUM</code> is generated if <em class="parameter"><code>target</code></em> is not one of the accepted tokens.
</p>
<p>
<code class="constant">GL_INVALID_VALUE</code> is generated if <em class="parameter"><code>index</code></em> is greater than the
query target-specific maximum.
</p>
<p>
<code class="constant">GL_INVALID_OPERATION</code> is generated if <code class="function">glBeginQueryIndexed</code> is executed while
a query object of the same <em class="parameter"><code>target</code></em> is already active.
</p>
<p>
<code class="constant">GL_INVALID_OPERATION</code> is generated if <a class="citerefentry" href="glEndQueryIndexed.xhtml"><span class="citerefentry"><span class="refentrytitle">glEndQueryIndexed</span></span></a>
is executed when a query object of the same <em class="parameter"><code>target</code></em> is not active.
</p>
<p>
<code class="constant">GL_INVALID_OPERATION</code> is generated if <em class="parameter"><code>id</code></em> is 0.
</p>
<p>
<code class="constant">GL_INVALID_OPERATION</code> is generated if <em class="parameter"><code>id</code></em> is the name of an already active query object.
</p>
<p>
<code class="constant">GL_INVALID_OPERATION</code> is generated if <em class="parameter"><code>id</code></em> refers to an existing query object whose type
does not does not match <em class="parameter"><code>target</code></em>.
</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">glBeginQueryIndexed</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">glEndQueryIndexed</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="glBeginQuery.xhtml"><span class="citerefentry"><span class="refentrytitle">glBeginQuery</span></span></a>,
<a class="citerefentry" href="glDeleteQueries.xhtml"><span class="citerefentry"><span class="refentrytitle">glDeleteQueries</span></span></a>,
<a class="citerefentry" href="glEndQuery.xhtml"><span class="citerefentry"><span class="refentrytitle">glEndQuery</span></span></a>,
<a class="citerefentry" href="glGenQueries.xhtml"><span class="citerefentry"><span class="refentrytitle">glGenQueries</span></span></a>,
<a class="citerefentry" href="glGetQueryObject.xhtml"><span class="citerefentry"><span class="refentrytitle">glGetQueryObject</span></span></a>,
<a class="citerefentry" href="glGetQueryiv.xhtml"><span class="citerefentry"><span class="refentrytitle">glGetQueryiv</span></span></a>,
<a class="citerefentry" href="glIsQuery.xhtml"><span class="citerefentry"><span class="refentrytitle">glIsQuery</span></span></a>
</p>
</div>
<div class="refsect1" id="Copyright">
<h2>Copyright</h2>
<p>
Copyright <span class="trademark"/>© 2010-2014 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>
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