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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">[
<!ENTITY imageFunctionsInc SYSTEM "imageFunctionsInc.xml">
]>
<refentry>
<refentryinfo>
<keywordset>
<keyword>write_image2d</keyword>
</keywordset>
</refentryinfo>
<refmeta>
<refentrytitle>write_image (2D)</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="write_image2d">
<refname>write_image</refname>
<refpurpose>
Write <varname>color</varname> value to location in a 2D image object.
</refpurpose>
</refnamediv>
<!-- FLOAT -->
<refsynopsisdiv xmlns:xlink="http://www.w3.org/1999/xlink"><title></title>
<funcsynopsis>
<funcprototype>
<funcdef>
<link xlink:href="scalarDataTypes.html">void</link>
<function>
write_imagef
</function>
</funcdef>
<paramdef>
<link xlink:href="otherDataTypes.html">image2d_t</link>
<parameter>image</parameter>
</paramdef>
<paramdef>
<link xlink:href="vectorDataTypes.html">int2</link>
<parameter>coord</parameter>
</paramdef>
<paramdef>
<link xlink:href="vectorDataTypes.html">float4</link>
<parameter>color</parameter>
</paramdef>
</funcprototype>
</funcsynopsis>
<funcsynopsis>
<funcprototype>
<funcdef>
<link xlink:href="scalarDataTypes.html">void</link>
<function>
write_imagef
</function>
</funcdef>
<paramdef>
<link xlink:href="otherDataTypes.html">image2d_array_t</link>
<parameter>image</parameter>
</paramdef>
<paramdef>
<link xlink:href="vectorDataTypes.html">int4</link>
<parameter>coord</parameter>
</paramdef>
<paramdef>
<link xlink:href="vectorDataTypes.html">float4</link>
<parameter>color</parameter>
</paramdef>
</funcprototype>
</funcsynopsis>
<!-- INT -->
<funcsynopsis>
<funcprototype>
<funcdef>
<link xlink:href="scalarDataTypes.html">void</link>
<function>
write_imagei
</function>
</funcdef>
<paramdef>
<link xlink:href="otherDataTypes.html">image2d_t</link>
<parameter>image</parameter>
</paramdef>
<paramdef>
<link xlink:href="vectorDataTypes.html">int2</link>
<parameter>coord</parameter>
</paramdef>
<paramdef>
<link xlink:href="vectorDataTypes.html">int4</link>
<parameter>color</parameter>
</paramdef>
</funcprototype>
</funcsynopsis>
<funcsynopsis>
<funcprototype>
<funcdef>
<link xlink:href="scalarDataTypes.html">void</link>
<function>
write_imagei
</function>
</funcdef>
<paramdef>
<link xlink:href="otherDataTypes.html">image2d_array_t</link>
<parameter>image</parameter>
</paramdef>
<paramdef>
<link xlink:href="vectorDataTypes.html">int4</link>
<parameter>coord</parameter>
</paramdef>
<paramdef>
<link xlink:href="vectorDataTypes.html">int4</link>
<parameter>color</parameter>
</paramdef>
</funcprototype>
</funcsynopsis>
<!-- UINT -->
<funcsynopsis>
<funcprototype>
<funcdef>
<link xlink:href="scalarDataTypes.html">void</link>
<function>
write_imageui
</function>
</funcdef>
<paramdef>
<link xlink:href="otherDataTypes.html">image2d_t</link>
<parameter>image</parameter>
</paramdef>
<paramdef>
<link xlink:href="vectorDataTypes.html">int2</link>
<parameter>coord</parameter>
</paramdef>
<paramdef>
<link xlink:href="vectorDataTypes.html">uint4</link>
<parameter>color</parameter>
</paramdef>
</funcprototype>
</funcsynopsis>
<funcsynopsis>
<funcprototype>
<funcdef>
<link xlink:href="scalarDataTypes.html">void</link>
<function>
write_imageui
</function>
</funcdef>
<paramdef>
<link xlink:href="otherDataTypes.html">image2d_array_t</link>
<parameter>image</parameter>
</paramdef>
<paramdef>
<link xlink:href="vectorDataTypes.html">int4</link>
<parameter>coord</parameter>
</paramdef>
<paramdef>
<link xlink:href="vectorDataTypes.html">uint4</link>
<parameter>color</parameter>
</paramdef>
</funcprototype>
</funcsynopsis>
<!-- HALF -->
<funcsynopsis>
<funcprototype>
<funcdef>
<link xlink:href="scalarDataTypes.html">void</link>
<function>
write_imageh
</function>
</funcdef>
<paramdef>
<link xlink:href="otherDataTypes.html">image2d_t</link>
<parameter>image</parameter>
</paramdef>
<paramdef>
<link xlink:href="vectorDataTypes.html">int2</link>
<parameter>coord</parameter>
</paramdef>
<paramdef>
<link xlink:href="vectorDataTypes.html">half4</link>
<parameter>color</parameter>
</paramdef>
</funcprototype>
</funcsynopsis>
<funcsynopsis>
<funcprototype>
<funcdef>
<link xlink:href="scalarDataTypes.html">void</link>
<function>
write_imageh
</function>
</funcdef>
<paramdef>
<link xlink:href="otherDataTypes.html">image2d_array_t</link>
<parameter>image</parameter>
</paramdef>
<paramdef>
<link xlink:href="vectorDataTypes.html">int4</link>
<parameter>coord</parameter>
</paramdef>
<paramdef>
<link xlink:href="vectorDataTypes.html">half4</link>
<parameter>color</parameter>
</paramdef>
</funcprototype>
</funcsynopsis>
</refsynopsisdiv>
<!-- ================================ DESCRIPTION -->
<refsect1 id="description"><title>Description</title>
<para>
<function>write_imagef</function> can only be used with image objects created with
<varname>image_channel_data_type</varname> set to one of the pre-defined packed formats
or set to <constant>CL_SNORM_INT8</constant>, <constant>CL_UNORM_INT8</constant>,
<constant>CL_SNORM_INT16</constant>, <constant>CL_UNORM_INT16</constant>,
<constant>CL_HALF_FLOAT</constant> or <constant>CL_FLOAT</constant>. Appropriate data
format conversion will be done to convert channel data from a floating-point value to
actual data format in which the channels are stored.
</para>
<para>
<function>write_imagei</function> can only be used with image objects
created with <varname>image_channel_data_type</varname> set to one of the following
values: <constant>CL_SIGNED_INT8</constant>, <constant>CL_SIGNED_INT16</constant>,
and <constant>CL_SIGNED_INT32</constant>.
</para>
<para>
<function>write_imageui</function> functions can only be used with image objects
created with <varname>image_channel_data_type</varname> set to one of the following
values: <constant>CL_UNSIGNED_INT8</constant>, <constant>CL_UNSIGNED_INT16</constant>,
or <constant>CL_UNSIGNED_INT32</constant>.
</para>
<para>
An application that wants to use <type>half</type> and
<type>half<replaceable>n</replaceable></type> types will need to include the <code>#pragma
OPENCL EXTENSION <citerefentry><refentrytitle>cl_khr_fp16</refentrytitle></citerefentry>
: enable</code> directive.
</para>
<para>
<function>write_imageh</function> can only be used with image objects created with
<varname>image_channel_data_type</varname> set to one of the pre-defined packed formats
or set to <constant>CL_SNORM_INT8</constant>, <constant>CL_UNORM_INT8</constant>,
<constant>CL_SNORM_INT16</constant>, <constant>CL_UNORM_INT16</constant> or
<constant>CL_HALF_FLOAT</constant>.
</para>
<bridgehead>Functions that take image2d_t</bridgehead>
<para>
For the functions that take an image_2d_t image, write color value to location specified by
<emphasis>coord.xy</emphasis> in the 2D image object specified by <varname>image</varname>.
Appropriate data format conversion to the specified image format is done before writing
the color value. <emphasis>coord.x</emphasis> and <emphasis>coord.y</emphasis> are
considered to be unnormalized coordinates and must be in the range 0 …
image width - 1, and 0 … image height - 1.
</para>
<para>
For functions that take image_2d_t, the behavior of <function>write_imagef</function>,
<function>write_imagei</function>, <function>write_imageui</function>,
and <function>write_imageh</function> for image objects created with
<varname>image_channel_data_type</varname> values not specified in the description
above or with <emphasis>(x, y)</emphasis> coordinate values that are not in the range
(0 … image width - 1, 0 … image height - 1), respectively, is undefined.
</para>
<bridgehead>Functions that take image2d_array_t</bridgehead>
<para>
For the functions that take an image_2d_array_t image, write color value
to location specified by <emphasis>coord.xy</emphasis> in the 2D image
identified by <emphasis>coord.z</emphasis> in the 2D image array specified by
<varname>image</varname>. Appropriate data format conversion to the specified
image format is done before writing the color value. <emphasis>coord.x</emphasis>,
<emphasis>coord.y</emphasis> and <emphasis>coord.z</emphasis> are considered to be
unnormalized coordinates and must be in the range 0 … image width - 1, 0 … image
height - 1 and 0 … image number of layers - 1.
</para>
<para>
For functions that take image_2d_array_t, the behavior of
<function>write_imagef</function>, <function>write_imagei</function>,
<function>write_imageui</function>, and <function>write_imageh</function> for image
objects created with <varname>image_channel_data_type</varname> values not specified in
the description above or with <emphasis>(x, y, z)</emphasis> coordinate values that are
not in the range (0 … image width - 1, 0 … image height - 1), respectively, is undefined.
</para>
</refsect1>
<!-- ================================ NOTES -->
<refsect1 id="notes"><title>Notes</title>
&imageFunctionsInc;
</refsect1>
<!-- ================================ 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="imageFunctions">OpenCL Specification</olink>
</para>
</refsect1>
<!-- ================================ ALSO SEE -->
<refsect1 id="seealso"><title>Also see</title>
<para>
<citerefentry href="imageFunctions"><refentrytitle>Image Functions</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>
<!-- 12-Oct-2011 -->
</refentry>
|
