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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>clEnqueueCopyImage</keyword>
</keywordset>
</refentryinfo>
<refmeta>
<refentrytitle>
clEnqueueCopyImage
</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>
<!-- ================================ SYNOPSIS -->
<refnamediv id="clEnqueueCopyImage">
<refname>
clEnqueueCopyImage
</refname>
<refpurpose>
Enqueues a command to copy image objects.
</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>clEnqueueCopyImage</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>src_image</parameter></paramdef>
<paramdef><link xlink:href="abstractDataTypes.html">cl_mem</link><parameter>dst_image</parameter></paramdef>
<paramdef>const <link xlink:href="scalarDataTypes.html">size_t</link><parameter>*src_origin</parameter></paramdef>
<paramdef>const <link xlink:href="scalarDataTypes.html">size_t</link><parameter>*dst_origin</parameter></paramdef>
<paramdef>const <link xlink:href="scalarDataTypes.html">size_t</link><parameter>*region</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>
<!-- ================================ PARAMETERS -->
<refsect1 id="parameters">
<title>Parameters</title>
<variablelist>
<varlistentry>
<term> <varname> command_queue </varname> </term>
<listitem>
<para>
Refers to the command-queue in which the copy command will be queued. The
OpenCL context associated with <varname>command_queue</varname>,
<varname>src_image</varname> and <varname>dst_image</varname> must be
the same.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term>
<varname>
src_image,
</varname>
<varname>
dst_image,
</varname>
</term>
<listitem>
<para>
Can be 1D, 2D, 3D image or a 1D, 2D image array objects allowing us to perform the following actions:
<itemizedlist mark="disc">
<listitem>
Copy a 1D image object to a 1D image object.
</listitem>
<listitem>
Copy a 1D image object to a scanline of a 2D image object and vice-versa.
</listitem>
<listitem>
Copy a 1D image object to a scanline of a 2D slice of a 3D image object and vice-versa.
</listitem>
<listitem>
Copy a 1D image object to a scanline of a specific image index of a 1D or 2D image
array object and vice-versa.
</listitem>
<listitem>
Copy a 2D image object to a 2D image object.
</listitem>
<listitem>
Copy a 2D image object to a 2D slice of a 3D image object and vice-versa.
</listitem>
<listitem>
Copy a 2D image object to a specific image index of a 2D image array object and vice versa.
</listitem>
<listitem>
Copy images from a 1D image array object to a 1D image array object.
</listitem>
<listitem>
Copy images from a 2D image array object to a 2D image array object.
</listitem>
<listitem>
Copy a 3D image object to a 3D image object.
</listitem>
</itemizedlist>
</para>
</listitem>
</varlistentry>
<varlistentry>
<term> <varname> src_origin </varname> </term>
<listitem>
<para>
Defines the (x, y, z) offset in pixels in the 1D, 2D or 3D image, the (x,
y) offset and the image index in the 2D image array or the (x) offset and
the image index in the 1D image array. If <varname>image</varname>
is a 2D image object, <varname>src_origin</varname>[2] must
be 0. If <varname>src_image</varname> is a 1D image object,
<varname>src_origin</varname>[1] and <varname>src_origin</varname>[2]
must be 0. If <varname>src_image</varname> is a 1D image array object,
<varname>src_origin</varname>[2] must be 0. If <varname>src_image</varname>
is a 1D image array object, <varname>src_origin</varname>[1] describes
the image index in the 1D image array. If <varname>src_image</varname>
is a 2D image array object, <varname>src_origin</varname>[2] describes
the image index in the 2D image array.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term> <varname> dst_origin </varname> </term>
<listitem>
<para>
Defines the (x, y, z) offset in pixels in the 1D, 2D or 3D image, the (x,
y) offset and the image index in the 2D image array or the (x) offset and
the image index in the 1D image array. If <varname>dst_image</varname>
is a 2D image object, <varname>dst_origin</varname>[2] must be 0.
If <varname>dst_image</varname> is a 1D image or 1D image buffer object,
<varname>dst_origin</varname>[1] and <varname>dst_origin</varname>[2]
must be 0. If <varname>dst_image</varname> is a 1D image array object,
<varname>dst_origin</varname>[2] must be 0. If <varname>dst_image</varname>
is a 1D image array object, <varname>dst_origin</varname>[1] describes
the image index in the 1D image array. If <varname>dst_image</varname>
is a 2D image array object, <varname>dst_origin</varname>[2] describes
the image index in the 2D image array.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term> <varname> region </varname> </term>
<listitem>
<para>
Defines the <emphasis>(width, height, depth)</emphasis> in pixels of
the 1D, 2D or 3D rectangle, the <emphasis>(width, height)</emphasis> in
pixels of the 2D rectangle and the number of images of a 2D image array
or the <emphasis>(width)</emphasis> in pixels of the 1D rectangle and the
number of images of a 1D image array. If <varname>src_image</varname>
or <varname>dst_image</varname> is a 2D image object,
<varname>region</varname>[2] must be 1. If <varname>src_image</varname>
or <varname>dst_image</varname> is a 1D image or 1D image buffer object,
<varname>region</varname>[1] and <varname>region</varname>[2] must be 1.
If <varname>src_image</varname> or <varname>dst_image</varname> is a 1D
image array object, <varname>region</varname>[2] must be 1.
</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 copy 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>
<!-- ================================ NOTES -->
<refsect1 id="notes"><title>Notes</title>
<para>
It is currently a requirement that the <varname>src_image</varname>
and <varname>dst_image</varname> image memory objects for
<function>clEnqueueCopyImage</function> must have the exact same image format
(i.e. the <citerefentry><refentrytitle>cl_image_format</refentrytitle></citerefentry>
descriptor specified when <varname>src_image</varname> and <varname>dst_image</varname>
are created must match).
</para>
</refsect1>
<!-- ================================ ERRORS -->
<refsect1 id="errors"><title>Errors</title>
<para>
<function>clEnqueueCopyImage</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>, <varname>src_image</varname> and
<varname>dst_image</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>src_image</varname>
and <varname>dst_image</varname> are not valid image objects.
</listitem>
<listitem>
<errorname>CL_IMAGE_FORMAT_MISMATCH</errorname> if <varname>src_image</varname>
and <varname>dst_image</varname> do not use the same image format.
</listitem>
<listitem>
<errorname>CL_INVALID_VALUE</errorname> if the 2D or 3D rectangular region
specified by <varname>src_origin</varname> and <varname>src_origin</varname> +
<varname>region</varname> refers to a region outside <varname>src_image</varname>,
or if the 2D or 3D rectangular region specified by <varname>dst_origin</varname>
and <varname>dst_origin</varname> + <varname>region</varname> refers to a region
outside <varname>dst_image</varname>.
</listitem>
<listitem>
<errorname>CL_INVALID_VALUE</errorname> if values in <varname>src_origin</varname>,
<varname>dst_origin</varname> and <varname>region</varname> do not follow
rules described in the argument description for <varname>src_origin</varname>,
<varname>dst_origin</varname> and <varname>region</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_INVALID_IMAGE_SIZE</errorname> if image dimensions (image width,
height, specified or compute row and/or slice pitch) for <varname>src_image</varname>
or <varname>dst_image</varname> are not supported by device associated with
<varname>queue</varname>.
</listitem>
<listitem>
<errorname>CL_INVALID_IMAGE_FORMAT</errorname> if image format (image channel order
and data type) for <varname>src_image</varname> or <varname>dst_image</varname>
are not supported by 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>src_image</varname>
or <varname>dst_image</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>
<listitem>
<errorname>CL_INVALID_OPERATION</errorname> if the device
associated with <varname>command_queue</varname> does
not support images (i.e. <constant>CL_DEVICE_IMAGE_SUPPORT</constant> specified
in the table <!-- table 4.3 --> of OpenCL Device Queries for
<citerefentry><refentrytitle>clGetDeviceInfo</refentrytitle></citerefentry>
is <constant>CL_FALSE</constant>).
</listitem>
<listitem>
<errorname>CL_MEM_COPY_OVERLAP</errorname> if <varname>src_image</varname>
and <varname>dst_image</varname> are the same image object and the source and
destination regions overlap.
</listitem>
</itemizedlist>
</refsect1>
<!-- ================================ EXAMPLE -->
<!-- DO NOT DELETE IN CASE AN EXAMPLE IS ADDED IN THE FUTURE -->
<!--
<refsect2 id="example1">
<title>
Example
</title>
<informaltable frame="none">
<tgroup cols="1" align="left" colsep="0" rowsep="0">
<colspec colname="col1" colnum="1" />
<tbody>
<row>
<entry>
Example goes here - it will be set in "code" type with white space preserved.
</entry>
</row>
</tbody>
</tgroup>
</informaltable>
</refsect2>
-->
<!-- ================================ SPECIFICATION -->
<!-- Set the "uri" attribute in the <olink /> element to the "named destination" for the PDF page
-->
<refsect1 id="specification"><title>Specification</title>
<para>
<imageobject>
<imagedata fileref="pdficon_small1.gif" format="gif" />
</imageobject>
<olink uri="clEnqueueCopyImage">OpenCL Specification</olink>
</para>
</refsect1>
<!-- ================================ ALSO SEE -->
<refsect1 id="seealso"><title>Also see</title>
<para>
<citerefentry><refentrytitle>clEnqueueReadImage</refentrytitle></citerefentry>,
<citerefentry><refentrytitle>clEnqueueWriteImage</refentrytitle></citerefentry>
</para>
</refsect1>
<!-- ================================ COPYRIGHT -->
<!-- Content included from copyright.inc.xsl -->
<refsect3 id="Copyright"><title></title>
<imageobject>
<imagedata fileref="KhronosLogo.jpg" format="jpg" />
</imageobject>
<para />
</refsect3>
<!-- 20-Oct-2011 -->
</refentry>
|
