| <?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>clEnqueueCopyImageToBuffer</keyword> |
| </keywordset> |
| </refentryinfo> |
| |
| <refmeta> |
| <refentrytitle> |
| clEnqueueCopyImageToBuffer |
| </refentrytitle> |
| |
| <refmiscinfo> |
| <copyright> |
| <year>2007-2013</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="clEnqueueCopyImageToBuffer"> |
| <refname> |
| clEnqueueCopyImageToBuffer |
| </refname> |
| |
| <refpurpose> |
| Enqueues a command to copy an image object to a buffer object. |
| </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>clEnqueueCopyImageToBuffer</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_buffer</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>*region</parameter></paramdef> |
| <paramdef><link xlink:href="scalarDataTypes.html">size_t</link><parameter>dst_offset</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> |
| Must be a valid host command-queue. The OpenCL context associated with |
| <varname>command_queue</varname>, <varname>src_image</varname>, and |
| <varname>dst_buffer</varname> must be the same. |
| </para> |
| </listitem> |
| </varlistentry> |
| |
| <varlistentry> |
| <term> <varname> src_image </varname> </term> |
| <listitem> |
| <para> |
| A valid image object. |
| </para> |
| </listitem> |
| </varlistentry> |
| |
| <varlistentry> |
| <term> <varname> dst_buffer </varname> </term> |
| <listitem> |
| <para> |
| A valid buffer object. |
| </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>src_image</varname> |
| is a 2D image object, <varname>src_origin</varname>[2] must be 0. |
| If <varname>src_image</varname> is a 1D image or 1D image buffer 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> region </varname> </term> |
| <listitem> |
| <para> |
| Defines the (width, height, depth) in pixels of the 1D, 2D or 3D rectangle, |
| the (width, height) in pixels of the 2D rectangle and the number of images |
| of a 2D image array or the (width) in pixels of the 1D rectangle and the |
| number of images of a 1D image array. If <varname>src_image</varname> |
| is a 2D image object, <varname>region</varname>[2] must be 1. |
| If <varname>src_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> is a 1D image array object, |
| <varname>region</varname>[2] must be 1. The values in <varname>region</varname> cannot be 0. |
| </para> |
| </listitem> |
| </varlistentry> |
| |
| <varlistentry> |
| <term> <varname> dst_offset </varname> </term> |
| <listitem> |
| <para> |
| Refers to the offset where to begin copying data into |
| <varname>dst_buffer</varname>. The size in bytes of the region to be copied |
| referred to as <varname>dst_cb</varname> is computed as <varname>width * height * depth * bytes/image |
| element</varname> if <varname>src_image</varname> is a 3D image object, is computed |
| as <varname>width * height * bytes/image element</varname> if <varname>src_image</varname> |
| is a 2D image, is computed as <varname>width * height * arraysize * bytes/image |
| element</varname> if <varname>src_image</varname> is a 2D image array object, is |
| computed as <varname>width * bytes/image element</varname> if <varname>src_image</varname> |
| is a 1D image or 1D image buffer object and is computed as <varname>width * |
| arraysize * bytes/image element</varname> if <varname>src_image</varname> is a 1D |
| image array object. |
| </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></title> |
| <para> |
| If the mipmap extensions are enabled with |
| <citerefentry><refentrytitle>cl_khr_mipmap_image</refentrytitle></citerefentry>, |
| calls to <citerefentry><refentrytitle>clEnqueueCopyImage</refentrytitle></citerefentry>, |
| <function>clEnqueueCopyImageToBuffer</function>, and |
| <citerefentry><refentrytitle>clEnqueueCopyBufferToImage</refentrytitle></citerefentry> |
| can also be used to copy |
| from and to a specific mip-level of a mip-mapped image. |
| If <varname>src_image</varname> argument is a 1D image, |
| <varname>src_origin</varname>[1] specifies the mip-level |
| to use. If <varname>src_image</varname> argument is a |
| 1D image array, <varname>src_origin</varname>[2] |
| specifies the mip-level to use. If <varname>src_image</varname> |
| argument is a 2D image, <varname>src_origin</varname>[3] |
| specifies the mip-level to use. |
| If <varname>src_image</varname> argument is a 2D image |
| array or a 3D image, <varname>src_origin</varname>[3] |
| specifies the mip-level to use. If |
| <varname>dst_image</varname> argument is a 1D image, |
| <varname>dst_origin</varname>[1] specifies the |
| mip-level to use. If <varname>dst_image</varname> argument |
| is a 1D image array, <varname>dst_origin</varname>[2] |
| specifies the mip-level to use. If |
| <varname>dst_image</varname> argument is a 2D image, |
| <varname>dst_origin</varname>[3] specifies the |
| mip-level to use. If <varname>dst_image</varname> |
| argument is a 2D image array or a 3D image, |
| <varname>dst_origin</varname>[3] specifies the |
| mip-level to use. |
| </para> |
| |
| <para> |
| If the mip level specified is not a valid value, |
| these functions return the error |
| <errorname>CL_INVALID_MIP_LEVEL</errorname>. |
| </para> |
| |
| </refsect1> |
| |
| <!-- ================================ ERRORS --> |
| |
| <refsect1 id="errors"><title>Errors</title> |
| <para> |
| <function>clEnqueueCopyImageToBuffer</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 host 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_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>src_image</varname> is |
| not a valid image object or <varname>dst_buffer</varname> is not a valid buffer |
| object or if <varname>src_image</varname> is a 1D image buffer object created |
| from <varname>dst_buffer</varname>. |
| </listitem> |
| |
| <listitem> |
| <errorname>CL_INVALID_VALUE</errorname> if the 1D, 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 region specified by <varname>dst_offset</varname> and |
| <varname>dst_offset</varname> + <varname>dst_cb</varname> refers to a region |
| outside <varname>dst_buffer</varname>. |
| </listitem> |
| |
| <listitem> |
| <errorname>CL_INVALID_VALUE</errorname> if values in <varname>src_origin</varname> |
| and <varname>region</varname> do not follow rules described in the argument |
| description for <varname>src_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_MISALIGNED_SUB_BUFFER_OFFSET</errorname> if |
| <varname>dst_buffer</varname> is a sub-buffer object and <varname>offset</varname> |
| 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_INVALID_IMAGE_SIZE</errorname> if image dimensions (image width, |
| height, specified or compute row and/or slice pitch) for <varname>src_image</varname> |
| are not supported by device associated with <varname>queue</varname>. |
| </listitem> |
| |
| <listitem> |
| <errorname>CL_IMAGE_FORMAT_NOT_SUPPORTED</errorname> if image format (image channel |
| order and data type) for <varname>src_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_buffer</varname>. |
| </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_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> |
| |
| <!-- ================================ 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="clEnqueueCopyImageToBuffer">OpenCL Specification</olink> |
| </para> |
| </refsect1> |
| |
| <!-- ================================ ALSO SEE --> |
| |
| <refsect1 id="seealso"><title>Also see</title> |
| <para> |
| <citerefentry><refentrytitle>clEnqueueReadBuffer</refentrytitle></citerefentry>, |
| <citerefentry><refentrytitle>clEnqueueWriteBuffer</refentrytitle></citerefentry>, |
| <citerefentry><refentrytitle>clCreateBuffer</refentrytitle></citerefentry>, |
| <citerefentry><refentrytitle>clEnqueueCopyBuffer</refentrytitle></citerefentry>, |
| <citerefentry><refentrytitle>clEnqueueCopyBufferToImage</refentrytitle></citerefentry>, |
| <citerefentry><refentrytitle>cl_khr_mipmap_image</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> |
| |
| <!-- 8-Dec-2013, rev. 19 --> |
| </refentry> |
| |
