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<title>clEnqueueFillBuffer</title>
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<div class="refentry">
<a id="idm1"></a>
<div class="titlepage"></div>
<div xmlns="" class="refnamediv">
<a xmlns="http://www.w3.org/1999/xhtml" id="clEnqueueFillBuffer"></a>
<h1>
clEnqueueFillBuffer
</h1>
<p>
Enqueues a command to fill a buffer object with a pattern of a given pattern size.
</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">clEnqueueFillBuffer</strong>
(</code>
<td>
<a xmlns="http://www.w3.org/1999/xhtml" class="link" href="abstractDataTypes.html" target="pagedisplay">cl_command_queue</a>
<var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">command_queue</var>
, </td>
</td>
</tr>
<tr valign="top">
<td> </td>
<td>
<a xmlns="http://www.w3.org/1999/xhtml" class="link" href="abstractDataTypes.html" target="pagedisplay">cl_mem</a>
<var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">buffer</var>
, </td>
</tr>
<tr valign="top">
<td> </td>
<td>const
<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">*pattern</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">pattern_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">size_t</a>
<var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">offset</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">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">cl_uint</a>
<var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">num_events_in_wait_list</var>
, </td>
</tr>
<tr valign="top">
<td> </td>
<td>const
<a xmlns="http://www.w3.org/1999/xhtml" class="link" href="abstractDataTypes.html" target="pagedisplay">cl_event</a>
<var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">*event_wait_list</var>
, </td>
</tr>
<tr valign="top">
<td> </td>
<td>
<a xmlns="http://www.w3.org/1999/xhtml" class="link" href="abstractDataTypes.html" target="pagedisplay">cl_event</a>
<var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">*event</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"> command_queue </code> </span>
</dt>
<dd>
<p>
Refers to the command-queue in which the fill command will be queued.
The OpenCL context associated with <code class="varname">command_queue</code>
and <code class="varname">buffer</code> must be the same.
</p>
</dd>
<dt>
<span class="term"> <code class="varname"> buffer </code> </span>
</dt>
<dd>
<p>
A valid buffer object.
</p>
</dd>
<dt>
<span class="term"> <code class="varname"> pattern </code> </span>
</dt>
<dd>
<p>
A pointer to the data pattern of size <code class="varname">pattern_size</code>
in bytes. <code class="varname">pattern</code> will be used to fill a region
in <code class="varname">buffer</code> starting at <code class="varname">offset</code>
and is <code class="varname">size</code> bytes in size. The data pattern
must be a scalar or vector integer or floating-point data type. For
example, if <code class="varname">buffer</code> is to be filled with a pattern of
<span class="type">float4</span> values, then <code class="varname">pattern</code> will be a pointer
to a <span class="type">cl_float4</span> value and <code class="varname">pattern_size</code>
will be <code class="code">sizeof(cl_float4)</code>. The maximum value of
<code class="varname">pattern_size</code> is the size of the largest integer
or floating-point vector data type supported by the OpenCL device.
The memory associated with <code class="varname">pattern</code> can be reused or
freed after the function returns.
</p>
</dd>
<dt>
<span class="term"> <code class="varname"> offset </code> </span>
</dt>
<dd>
<p>
The location in bytes of the region being filled in <code class="varname">buffer</code>
and must be a multiple of <code class="varname">pattern_size</code>.
</p>
</dd>
<dt>
<span class="term"> <code class="varname"> size </code> </span>
</dt>
<dd>
<p>
The size in bytes of region being filled in <code class="varname">buffer</code>
and must be a multiple of <code class="varname">pattern_size</code>.
</p>
</dd>
<dt>
<span class="term">
<code class="varname">
event_wait_list
,</code>
<code class="varname">
num_events_in_wait_list
</code>
</span>
</dt>
<dd>
<p>
Specify events that need to complete before this particular
command can be executed. If <code class="varname">event_wait_list</code>
is NULL, then this particular command does not wait on any
event to complete. If <code class="varname">event_wait_list</code> is
NULL, <code class="varname">num_events_in_wait_list</code> must be 0. If
<code class="varname">event_wait_list</code> is not NULL, the list of events
pointed to by <code class="varname">event_wait_list</code> must be valid
and <code class="varname">num_events_in_wait_list</code> must be greater
than 0. The events specified in <code class="varname">event_wait_list</code>
act as synchronization points. The context associated with events in
<code class="varname">event_wait_list</code> and <code class="varname">command_queue</code> must
be the same. The memory associated with <code class="varname">event_wait_list</code>
can be reused or freed after the function returns.
</p>
</dd>
<dt>
<span class="term"> <code class="varname"> event </code> </span>
</dt>
<dd>
<p>
Returns an event object that identifies this particular write
command and can be used to query or queue a wait for this particular
command to complete. <code class="varname">event</code> can be NULL in
which case it will not be possible for the application to query the
status of this command or queue a wait for this command to complete.
<a class="citerefentry" href="clEnqueueBarrierWithWaitList.html"><span class="citerefentry"><span class="refentrytitle">clEnqueueBarrierWithWaitList</span></span></a>
can be used instead. If the <code class="varname">event_wait_list</code>
and the <code class="varname">event</code> arguments are not NULL, the
<code class="varname">event</code> argument should not refer to an element of the
<code class="varname">event_wait_list</code> array.
</p>
</dd>
</dl>
</div>
</div>
<div class="refsect1">
<a id="notes"></a>
<h2>Notes</h2>
<p>
Enqueues a command to fill a buffer object with a pattern of a given pattern size. The
usage information which indicates whether the memory object can be read or written by
a kernel and/or the host and is given by the <span class="type">cl_mem_flags</span> argument value
specified when buffer is created is ignored by <code class="function">clEnqueueFillBuffer</code>.
</p>
</div>
<div class="refsect1">
<a id="errors"></a>
<h2>Errors</h2>
<p>
<code class="function">clEnqueueFillBuffer</code> 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_COMMAND_QUEUE</span> if <code class="varname">command_queue</code>
is not a valid command-queue.
</li>
<li class="listitem" style="list-style-type: disc"><span class="errorname">CL_INVALID_CONTEXT</span> if the context associated with
<code class="varname">command_queue</code> and <code class="varname">buffer</code> are not the same
or if the context associated with <code class="varname">command_queue</code> and events in
<code class="varname">event_wait_list</code> are not the same.
</li>
<li class="listitem" style="list-style-type: disc"><span class="errorname">CL_INVALID_MEM_OBJECT</span> if <code class="varname">buffer</code> is not
a valid buffer object.
</li>
<li class="listitem" style="list-style-type: disc"><span class="errorname">CL_INVALID_VALUE</span> if <code class="varname">offset</code> or
<code class="varname">offset</code> + <code class="varname">size</code> require accessing elements
outside the <code class="varname">buffer</code> buffer object respectively.
</li>
<li class="listitem" style="list-style-type: disc"><span class="errorname">CL_INVALID_VALUE</span> if <code class="varname">pattern</code> is NULL
or if <code class="varname">pattern_size</code> is 0 or if <code class="varname">pattern_size</code>
is not one of {1, 2, 4, 8, 16, 32, 64, 128}.
</li>
<li class="listitem" style="list-style-type: disc"><span class="errorname">CL_INVALID_VALUE</span> if <code class="varname">offset</code> and
<code class="varname">size</code> are not a multiple of <code class="varname">pattern_size</code>.
</li>
<li class="listitem" style="list-style-type: disc"><span class="errorname">CL_INVALID_EVENT_WAIT_LIST</span>
if <code class="varname">event_wait_list</code> is NULL and
<code class="varname">num_events_in_wait_list</code> > 0,
or <code class="varname">event_wait_list</code> is not NULL and
<code class="varname">num_events_in_wait_list</code> is 0, or if event objects in
<code class="varname">event_wait_list</code> are not valid events.
</li>
<li class="listitem" style="list-style-type: disc"><span class="errorname">CL_MISALIGNED_SUB_BUFFER_OFFSET</span> if <code class="varname">buffer</code>
is a sub-buffer object and offset specified when the sub-buffer object is created
is not aligned to <code class="constant">CL_DEVICE_MEM_BASE_ADDR_ALIGN</code> value for
device associated with <code class="varname">queue</code>.
</li>
<li class="listitem" style="list-style-type: disc"><span class="errorname">CL_MEM_OBJECT_ALLOCATION_FAILURE</span> if there is a failure to
allocate memory for data store associated with <code class="varname">buffer</code>.
</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="http://www.khronos.org/registry/cl/specs/opencl-1.2.pdf#page=84" target="OpenCL Spec">OpenCL Specification</a>
</p>
</div>
<div class="refsect1">
<a id="seealso"></a>
<h2>Also see</h2>
<p>
<a class="citerefentry" href="clEnqueueBarrierWithWaitList.html"><span class="citerefentry"><span class="refentrytitle">clEnqueueBarrierWithWaitList</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 © 2007-2011 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
permit persons to whom the Materials are furnished to do so, subject to
the condition that this copyright notice and permission notice shall be included
in all copies or substantial portions of the Materials.
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