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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook MathML Module V1.1b1//EN"
"http://www.oasis-open.org/docbook/xml/mathml/1.1CR1/dbmathml.dtd">
<refentry>
<refentryinfo>
<keywordset>
<keyword>clEnqueueFillBuffer</keyword>
</keywordset>
</refentryinfo>
<refmeta>
<refentrytitle>
clEnqueueFillBuffer
</refentrytitle>
<refmiscinfo>
<copyright>
<year>2007-2011</year>
<holder>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.</holder>
</copyright>
</refmiscinfo>
<manvolnum>3</manvolnum>
</refmeta>
<refnamediv id="clEnqueueFillBuffer">
<refname>
clEnqueueFillBuffer
</refname>
<refpurpose>
Enqueues a command to fill a buffer object with a pattern of a given pattern size.
</refpurpose>
</refnamediv>
<refsynopsisdiv xmlns:xlink="http://www.w3.org/1999/xlink"><title></title>
<funcsynopsis>
<funcprototype>
<funcdef>
<link xlink:href="scalarDataTypes.html">cl_int</link>
<function>clEnqueueFillBuffer</function>
</funcdef>
<paramdef>
<link xlink:href="abstractDataTypes.html">cl_command_queue</link>
<parameter>command_queue</parameter>
</paramdef>
<paramdef>
<link xlink:href="abstractDataTypes.html">cl_mem</link>
<parameter>buffer</parameter>
</paramdef>
<paramdef>const
<link xlink:href="scalarDataTypes.html">void</link>
<parameter>*pattern</parameter>
</paramdef>
<paramdef>
<link xlink:href="scalarDataTypes.html">size_t</link>
<parameter>pattern_size</parameter>
</paramdef>
<paramdef>
<link xlink:href="scalarDataTypes.html">size_t</link>
<parameter>offset</parameter>
</paramdef>
<paramdef>
<link xlink:href="scalarDataTypes.html">size_t</link>
<parameter>size</parameter>
</paramdef>
<paramdef>
<link xlink:href="scalarDataTypes.html">cl_uint</link>
<parameter>num_events_in_wait_list</parameter>
</paramdef>
<paramdef>const
<link xlink:href="abstractDataTypes.html">cl_event</link>
<parameter>*event_wait_list</parameter>
</paramdef>
<paramdef>
<link xlink:href="abstractDataTypes.html">cl_event</link>
<parameter>*event</parameter>
</paramdef>
</funcprototype>
</funcsynopsis>
</refsynopsisdiv>
<refsect1 id="parameters">
<title>Parameters</title>
<variablelist>
<varlistentry>
<term> <varname> command_queue </varname> </term>
<listitem>
<para>
Refers to the command-queue in which the fill command will be queued.
The OpenCL context associated with <varname>command_queue</varname>
and <varname>buffer</varname> must be the same.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term> <varname> buffer </varname> </term>
<listitem>
<para>
A valid buffer object.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term> <varname> pattern </varname> </term>
<listitem>
<para>
A pointer to the data pattern of size <varname>pattern_size</varname>
in bytes. <varname>pattern</varname> will be used to fill a region
in <varname>buffer</varname> starting at <varname>offset</varname>
and is <varname>size</varname> bytes in size. The data pattern
must be a scalar or vector integer or floating-point data type. For
example, if <varname>buffer</varname> is to be filled with a pattern of
<type>float4</type> values, then <varname>pattern</varname> will be a pointer
to a <type>cl_float4</type> value and <varname>pattern_size</varname>
will be <code>sizeof(cl_float4)</code>. The maximum value of
<varname>pattern_size</varname> is the size of the largest integer
or floating-point vector data type supported by the OpenCL device.
The memory associated with <varname>pattern</varname> can be reused or
freed after the function returns.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term> <varname> offset </varname> </term>
<listitem>
<para>
The location in bytes of the region being filled in <varname>buffer</varname>
and must be a multiple of <varname>pattern_size</varname>.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term> <varname> size </varname> </term>
<listitem>
<para>
The size in bytes of region being filled in <varname>buffer</varname>
and must be a multiple of <varname>pattern_size</varname>.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term>
<varname>
event_wait_list
,</varname>
<varname>
num_events_in_wait_list
</varname>
</term>
<listitem>
<para>
Specify events that need to complete before this particular
command can be executed. If <varname>event_wait_list</varname>
is NULL, then this particular command does not wait on any
event to complete. If <varname>event_wait_list</varname> is
NULL, <varname>num_events_in_wait_list</varname> must be 0. If
<varname>event_wait_list</varname> is not NULL, the list of events
pointed to by <varname>event_wait_list</varname> must be valid
and <varname>num_events_in_wait_list</varname> must be greater
than 0. The events specified in <varname>event_wait_list</varname>
act as synchronization points. The context associated with events in
<varname>event_wait_list</varname> and <varname>command_queue</varname> must
be the same. The memory associated with <varname>event_wait_list</varname>
can be reused or freed after the function returns.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term> <varname> event </varname> </term>
<listitem>
<para>
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. <varname>event</varname> 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.
<citerefentry><refentrytitle>clEnqueueBarrierWithWaitList</refentrytitle></citerefentry>
can be used instead. If the <varname>event_wait_list</varname>
and the <varname>event</varname> arguments are not NULL, the
<varname>event</varname> argument should not refer to an element of the
<varname>event_wait_list</varname> array.
</para>
</listitem>
</varlistentry>
</variablelist>
</refsect1>
<refsect1 id="notes"><title>Notes</title>
<para>
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 <type>cl_mem_flags</type> argument value
specified when buffer is created is ignored by <function>clEnqueueFillBuffer</function>.
</para>
</refsect1>
<refsect1 id="errors"><title>Errors</title>
<para>
<function>clEnqueueFillBuffer</function> returns <errorname>CL_SUCCESS</errorname> if
the function is executed successfully. Otherwise, it returns one of the following errors.
</para>
<itemizedlist mark="disc">
<listitem>
<errorname>CL_INVALID_COMMAND_QUEUE</errorname> if <varname>command_queue</varname>
is not a valid command-queue.
</listitem>
<listitem>
<errorname>CL_INVALID_CONTEXT</errorname> if the context associated with
<varname>command_queue</varname> and <varname>buffer</varname> are not the same
or if the context associated with <varname>command_queue</varname> and events in
<varname>event_wait_list</varname> are not the same.
</listitem>
<listitem>
<errorname>CL_INVALID_MEM_OBJECT</errorname> if <varname>buffer</varname> is not
a valid buffer object.
</listitem>
<listitem>
<errorname>CL_INVALID_VALUE</errorname> if <varname>offset</varname> or
<varname>offset</varname> + <varname>size</varname> require accessing elements
outside the <varname>buffer</varname> buffer object respectively.
</listitem>
<listitem>
<errorname>CL_INVALID_VALUE</errorname> if <varname>pattern</varname> is NULL
or if <varname>pattern_size</varname> is 0 or if <varname>pattern_size</varname>
is not one of {1, 2, 4, 8, 16, 32, 64, 128}.
</listitem>
<listitem>
<errorname>CL_INVALID_VALUE</errorname> if <varname>offset</varname> and
<varname>size</varname> are not a multiple of <varname>pattern_size</varname>.
</listitem>
<listitem>
<errorname>CL_INVALID_EVENT_WAIT_LIST</errorname>
if <varname>event_wait_list</varname> is NULL and
<varname>num_events_in_wait_list</varname> > 0,
or <varname>event_wait_list</varname> is not NULL and
<varname>num_events_in_wait_list</varname> is 0, or if event objects in
<varname>event_wait_list</varname> are not valid events.
</listitem>
<listitem>
<errorname>CL_MISALIGNED_SUB_BUFFER_OFFSET</errorname> if <varname>buffer</varname>
is a sub-buffer object and offset specified when the sub-buffer object is created
is not aligned to <constant>CL_DEVICE_MEM_BASE_ADDR_ALIGN</constant> value for
device associated with <varname>queue</varname>.
</listitem>
<listitem>
<errorname>CL_MEM_OBJECT_ALLOCATION_FAILURE</errorname> if there is a failure to
allocate memory for data store associated with <varname>buffer</varname>.
</listitem>
<listitem>
<errorname>CL_OUT_OF_RESOURCES</errorname> if there is a failure to allocate
resources required by the OpenCL implementation on the device.
</listitem>
<listitem>
<errorname>CL_OUT_OF_HOST_MEMORY</errorname> if there is a failure to allocate
resources required by the OpenCL implementation on the host.
</listitem>
</itemizedlist>
</refsect1>
<refsect1 id="specification"><title>Specification</title>
<para>
<imageobject>
<imagedata fileref="pdficon_small1.gif" format="gif" />
</imageobject>
<olink uri="clEnqueueFillBuffer">OpenCL Specification</olink>
</para>
</refsect1>
<refsect1 id="seealso"><title>Also see</title>
<para>
<citerefentry><refentrytitle>clEnqueueBarrierWithWaitList</refentrytitle></citerefentry>
</para>
</refsect1>
<refsect3 id="Copyright"><title></title>
<imageobject>
<imagedata fileref="KhronosLogo.jpg" format="jpg" />
</imageobject>
<para />
</refsect3>
</refentry>
|
