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<title>clGetSamplerInfo</title>
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<div class="refentry">
<a id="id-1"></a>
<div class="titlepage"></div>
<div xmlns="" class="refnamediv">
<a xmlns="http://www.w3.org/1999/xhtml" id="clGetSamplerInfo"></a>
<h1>
clGetSamplerInfo
</h1>
<p>
Returns information about the sampler object.
</p>
</div>
<div class="refsynopsisdiv">
<h2></h2>
<div class="funcsynopsis">
<table xmlns="" border="0" summary="Function synopsis" cellspacing="0" cellpadding="0">
<tr valign="bottom">
<td>
<code xmlns="http://www.w3.org/1999/xhtml" class="funcdef">
<a class="link" href="scalarDataTypes.html" target="pagedisplay">cl_int</a>
<strong class="fsfunc">clGetSamplerInfo</strong>
(</code>
<td><a xmlns="http://www.w3.org/1999/xhtml" class="link" href="abstractDataTypes.html" target="pagedisplay">cl_sampler</a> <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">sampler</var>, </td>
</td>
</tr>
<tr valign="top">
<td> </td>
<td><a xmlns="http://www.w3.org/1999/xhtml" class="link" href="enums.html#cl_sampler_info" target="pagedisplay">cl_sampler_info</a> <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">param_name</var>, </td>
</tr>
<tr valign="top">
<td> </td>
<td><a xmlns="http://www.w3.org/1999/xhtml" class="link" href="scalarDataTypes.html" target="pagedisplay">size_t</a> <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">param_value_size</var>, </td>
</tr>
<tr valign="top">
<td> </td>
<td><a xmlns="http://www.w3.org/1999/xhtml" class="link" href="scalarDataTypes.html" target="pagedisplay">void</a> <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">*param_value</var>, </td>
</tr>
<tr valign="top">
<td> </td>
<td><a xmlns="http://www.w3.org/1999/xhtml" class="link" href="scalarDataTypes.html" target="pagedisplay">size_t</a> <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">*param_value_size_ret</var><code>)</code></td>
</tr>
</table>
</div>
</div>
<div class="refsect1">
<a id="parameters"></a>
<h2>Parameters</h2>
<div class="variablelist">
<dl class="variablelist">
<dt>
<span class="term">
<code class="varname">sampler</code>
</span>
</dt>
<dd>
<p>Specifies the sampler being queried.</p>
</dd>
<dt>
<span class="term">
<code class="varname">param_name</code>
</span>
</dt>
<dd>
<p>
Specifies the information to query. The list of supported
<code class="varname">param_name</code> types and the information returned in
<code class="varname">param_value</code> by <code class="function">clGetSamplerInfo</code> is
described in the table below.
</p>
<div class="informaltable">
<table border="1">
<colgroup>
<col align="left" class="col1" />
<col align="left" class="col2" />
</colgroup>
<thead>
<tr>
<th align="left">cl_sampler_info</th>
<th align="left">Return Type and Info. returned in <code class="varname">param_value</code></th>
</tr>
</thead>
<tbody>
<tr>
<td align="left">
<code class="constant">CL_SAMPLER_REFERENCE_COUNT</code>
</td>
<td align="left">
Return type: cl_uint
<p>
Return the <code class="varname">sampler</code> reference count. The reference
count returned should be considered immediately stale. It is unsuitable
for general use in applications. This feature is provided for identifying
memory leaks.
</p>
</td>
</tr>
<tr>
<td align="left">
<code class="constant">CL_SAMPLER_CONTEXT</code>
</td>
<td align="left">
Return type: cl_context
<p>
Return the context specified when the sampler is created.
</p>
</td>
</tr>
<tr>
<td align="left">
<code class="constant">CL_SAMPLER_NORMALIZED_COORDS</code>
</td>
<td align="left">
Return type: cl_bool
<p>
Return the normalized coords value associated with
<code class="varname">sampler</code>.
</p>
</td>
</tr>
<tr>
<td align="left">
<code class="constant">CL_SAMPLER_ADDRESSING_MODE</code>
</td>
<td align="left">
Return type: cl_addressing_mode
<p>
Return the addressing mode value associated with
<code class="varname">sampler</code>.
</p>
</td>
</tr>
<tr>
<td align="left">
<code class="constant">CL_SAMPLER_FILTER_MODE</code>
</td>
<td align="left">
Return type: cl_filter_mode
<p>
Return the filter mode value associated with <code class="varname">sampler</code>.
</p>
</td>
</tr>
</tbody>
</table>
</div>
</dd>
<dt>
<span class="term"> <code class="varname">param_value </code> </span>
</dt>
<dd>
<p>
A pointer to memory where the appropriate result being queried is returned. If
<code class="varname">param_value</code> is NULL, it is ignored.
</p>
</dd>
<dt>
<span class="term"> <code class="varname"> param_value_size </code> </span>
</dt>
<dd>
<p>
Specifies the size in bytes of memory pointed to by
<code class="varname">param_value</code>. This size must be ≥ size of return type as
described in the table above.
</p>
</dd>
<dt>
<span class="term"> <code class="varname"> param_value_size_ret </code> </span>
</dt>
<dd>
<p>
Returns the actual size in bytes of data copied to <code class="varname">param_value</code>.
If <code class="varname">param_value_size_ret</code> is NULL, it is ignored.
</p>
</dd>
</dl>
</div>
</div>
<div class="refsect1">
<a id="errors"></a>
<h2>Errors</h2>
<p>
Returns <span class="errorname">CL_SUCCESS</span> if the function is executed
successfully. Otherwise, it returns one of the following errors:
</p>
<div class="itemizedlist">
<ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem" style="list-style-type: disc"><span class="errorname">CL_INVALID_VALUE</span> if <code class="varname">param_name</code> is not
valid, or if size in bytes specified by <code class="varname">param_value_size</code>
is &lt; size of return type as described in the table above and
<code class="varname">param_value</code> is not NULL
</li>
<li class="listitem" style="list-style-type: disc"><span class="errorname">CL_INVALID_SAMPLER</span> if <code class="varname">sampler</code> is a
not a valid sampler object.
</li>
<li class="listitem" style="list-style-type: disc"><span class="errorname">CL_OUT_OF_RESOURCES</span> if there is a failure to allocate
resources required by the OpenCL implementation on the device.
</li>
<li class="listitem" style="list-style-type: disc"><span class="errorname">CL_OUT_OF_HOST_MEMORY</span> if there is a failure to allocate
resources required by the OpenCL implementation on the host.
</li>
</ul>
</div>
</div>
<div class="refsect1">
<a id="specification"></a>
<h2>Specification</h2>
<p>
<img src="pdficon_small1.gif" />
<a href="https://www.khronos.org/registry/cl/specs/opencl-2.0.pdf#page=180" target="OpenCL Spec">OpenCL Specification</a>
</p>
</div>
<div class="refsect1">
<a id="seealso"></a>
<h2>Also see</h2>
<p>
<a class="citerefentry" href="clCreateSamplerWithProperties.html"><span class="citerefentry"><span class="refentrytitle">clCreateSamplerWithProperties</span></span></a>,
<a class="citerefentry" href="clRetainSampler.html"><span class="citerefentry"><span class="refentrytitle">clRetainSampler</span></span></a>,
<a class="citerefentry" href="clReleaseSampler.html"><span class="citerefentry"><span class="refentrytitle">clReleaseSampler</span></span></a>
</p>
</div>
<div xmlns="" class="refsect3" lang="en" xml:lang="en"><a xmlns="http://www.w3.org/1999/xhtml" id="Copyright"></a><h4 xmlns="http://www.w3.org/1999/xhtml"></h4><img xmlns="http://www.w3.org/1999/xhtml" src="KhronosLogo.jpg" /><p xmlns="http://www.w3.org/1999/xhtml"></p>Copyright © 2007-2013 The Khronos Group Inc.
Permission is hereby granted, free of charge, to any person obtaining a
copy of this software and/or associated documentation files (the
"Materials"), to deal in the Materials without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Materials, and to
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