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</style>
<title>write_image (1D)</title>
<meta name="generator" content="DocBook XSL Stylesheets V1.79.1" />
<meta name="keywords" content="write_image1d" />
</head>
<body>
<div class="refentry">
<a id="id-1"></a>
<div class="titlepage"></div>
<div xmlns="" class="refnamediv">
<a xmlns="http://www.w3.org/1999/xhtml" id="write_image1d"></a>
<h1>write_image1d</h1>
<p>
Write <code xmlns="http://www.w3.org/1999/xhtml" class="varname">color</code> value to location in a 1D image object.
</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">void</a>
<strong class="fsfunc">
write_imagef
</strong>
(</code>
<td>
aQual <a xmlns="http://www.w3.org/1999/xhtml" class="link" href="otherDataTypes.html" target="pagedisplay">image1d_t</a>
 <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">image</var>
, </td>
</td>
</tr>
<tr valign="top">
<td> </td>
<td>
<a xmlns="http://www.w3.org/1999/xhtml" class="link" href="scalarDataTypes.html" target="pagedisplay">int</a>
 <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">coord</var>
, </td>
</tr>
<tr valign="top">
<td> </td>
<td>
<a xmlns="http://www.w3.org/1999/xhtml" class="link" href="vectorDataTypes.html" target="pagedisplay">float4</a>
 <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">color</var>
<code>)</code></td>
</tr>
</table>
</div>
<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">void</a>
<strong class="fsfunc">
write_imagef
</strong>
(</code>
<td>
aQual <a xmlns="http://www.w3.org/1999/xhtml" class="link" href="otherDataTypes.html" target="pagedisplay">image1d_buffer_t</a>
 <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">image</var>
, </td>
</td>
</tr>
<tr valign="top">
<td> </td>
<td>
<a xmlns="http://www.w3.org/1999/xhtml" class="link" href="scalarDataTypes.html" target="pagedisplay">int</a>
 <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">coord</var>
, </td>
</tr>
<tr valign="top">
<td> </td>
<td>
<a xmlns="http://www.w3.org/1999/xhtml" class="link" href="vectorDataTypes.html" target="pagedisplay">float4</a>
 <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">color</var>
<code>)</code></td>
</tr>
</table>
</div>
<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">void</a>
<strong class="fsfunc">
write_imagef
</strong>
(</code>
<td>
aQual <a xmlns="http://www.w3.org/1999/xhtml" class="link" href="otherDataTypes.html" target="pagedisplay">image1d_array_t</a>
 <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">image</var>
, </td>
</td>
</tr>
<tr valign="top">
<td> </td>
<td>
<a xmlns="http://www.w3.org/1999/xhtml" class="link" href="vectorDataTypes.html" target="pagedisplay">int2</a>
 <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">coord</var>
, </td>
</tr>
<tr valign="top">
<td> </td>
<td>
<a xmlns="http://www.w3.org/1999/xhtml" class="link" href="vectorDataTypes.html" target="pagedisplay">float4</a>
 <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">color</var>
<code>)</code></td>
</tr>
</table>
</div>
<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">void</a>
<strong class="fsfunc">
write_imagei
</strong>
(</code>
<td>
aQual <a xmlns="http://www.w3.org/1999/xhtml" class="link" href="otherDataTypes.html" target="pagedisplay">image1d_t</a>
 <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">image</var>
, </td>
</td>
</tr>
<tr valign="top">
<td> </td>
<td>
<a xmlns="http://www.w3.org/1999/xhtml" class="link" href="scalarDataTypes.html" target="pagedisplay">int</a>
 <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">coord</var>
, </td>
</tr>
<tr valign="top">
<td> </td>
<td>
<a xmlns="http://www.w3.org/1999/xhtml" class="link" href="vectorDataTypes.html" target="pagedisplay">int4</a>
 <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">color</var>
<code>)</code></td>
</tr>
</table>
</div>
<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">void</a>
<strong class="fsfunc">
write_imagei
</strong>
(</code>
<td>
aQual <a xmlns="http://www.w3.org/1999/xhtml" class="link" href="otherDataTypes.html" target="pagedisplay">image1d_buffer_t</a>
 <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">image</var>
, </td>
</td>
</tr>
<tr valign="top">
<td> </td>
<td>
<a xmlns="http://www.w3.org/1999/xhtml" class="link" href="scalarDataTypes.html" target="pagedisplay">int</a>
 <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">coord</var>
, </td>
</tr>
<tr valign="top">
<td> </td>
<td>
<a xmlns="http://www.w3.org/1999/xhtml" class="link" href="vectorDataTypes.html" target="pagedisplay">int4</a>
 <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">color</var>
<code>)</code></td>
</tr>
</table>
</div>
<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">void</a>
<strong class="fsfunc">
write_imagei
</strong>
(</code>
<td>
aQual <a xmlns="http://www.w3.org/1999/xhtml" class="link" href="otherDataTypes.html" target="pagedisplay">image1d_array_t</a>
 <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">image</var>
, </td>
</td>
</tr>
<tr valign="top">
<td> </td>
<td>
<a xmlns="http://www.w3.org/1999/xhtml" class="link" href="vectorDataTypes.html" target="pagedisplay">int2</a>
 <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">coord</var>
, </td>
</tr>
<tr valign="top">
<td> </td>
<td>
<a xmlns="http://www.w3.org/1999/xhtml" class="link" href="vectorDataTypes.html" target="pagedisplay">int4</a>
 <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">color</var>
<code>)</code></td>
</tr>
</table>
</div>
<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">void</a>
<strong class="fsfunc">
write_imageui
</strong>
(</code>
<td>
aQual <a xmlns="http://www.w3.org/1999/xhtml" class="link" href="otherDataTypes.html" target="pagedisplay">image1d_t</a>
 <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">image</var>
, </td>
</td>
</tr>
<tr valign="top">
<td> </td>
<td>
<a xmlns="http://www.w3.org/1999/xhtml" class="link" href="scalarDataTypes.html" target="pagedisplay">int</a>
 <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">coord</var>
, </td>
</tr>
<tr valign="top">
<td> </td>
<td>
<a xmlns="http://www.w3.org/1999/xhtml" class="link" href="vectorDataTypes.html" target="pagedisplay">uint4</a>
 <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">color</var>
<code>)</code></td>
</tr>
</table>
</div>
<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">void</a>
<strong class="fsfunc">
write_imageui
</strong>
(</code>
<td>
aQual <a xmlns="http://www.w3.org/1999/xhtml" class="link" href="otherDataTypes.html" target="pagedisplay">image1d_buffer_t</a>
 <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">image</var>
, </td>
</td>
</tr>
<tr valign="top">
<td> </td>
<td>
<a xmlns="http://www.w3.org/1999/xhtml" class="link" href="scalarDataTypes.html" target="pagedisplay">int</a>
 <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">coord</var>
, </td>
</tr>
<tr valign="top">
<td> </td>
<td>
<a xmlns="http://www.w3.org/1999/xhtml" class="link" href="vectorDataTypes.html" target="pagedisplay">uint4</a>
 <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">color</var>
<code>)</code></td>
</tr>
</table>
</div>
<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">void</a>
<strong class="fsfunc">
write_imageui
</strong>
(</code>
<td>
aQual <a xmlns="http://www.w3.org/1999/xhtml" class="link" href="otherDataTypes.html" target="pagedisplay">image1d_array_t</a>
 <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">image</var>
, </td>
</td>
</tr>
<tr valign="top">
<td> </td>
<td>
<a xmlns="http://www.w3.org/1999/xhtml" class="link" href="vectorDataTypes.html" target="pagedisplay">int2</a>
 <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">coord</var>
, </td>
</tr>
<tr valign="top">
<td> </td>
<td>
<a xmlns="http://www.w3.org/1999/xhtml" class="link" href="vectorDataTypes.html" target="pagedisplay">uint4</a>
 <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">color</var>
<code>)</code></td>
</tr>
</table>
</div>
<h2><a id="id-1.4.11"></a>Functions added with half precision support enabled by extension
<code class="code">cl_khr_fp16</code>:</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">void</a>
<strong class="fsfunc">
write_imageh
</strong>
(</code>
<td>
<a xmlns="http://www.w3.org/1999/xhtml" class="link" href="otherDataTypes.html" target="pagedisplay">image1d_t</a>
 <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">image</var>
, </td>
</td>
</tr>
<tr valign="top">
<td> </td>
<td>
<a xmlns="http://www.w3.org/1999/xhtml" class="link" href="scalarDataTypes.html" target="pagedisplay">int</a>
 <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">coord</var>
, </td>
</tr>
<tr valign="top">
<td> </td>
<td>
<a xmlns="http://www.w3.org/1999/xhtml" class="link" href="vectorDataTypes.html" target="pagedisplay">half4</a>
 <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">color</var>
<code>)</code></td>
</tr>
</table>
</div>
<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">void</a>
<strong class="fsfunc">
write_imageh
</strong>
(</code>
<td>
<a xmlns="http://www.w3.org/1999/xhtml" class="link" href="otherDataTypes.html" target="pagedisplay">image1d_buffer_t</a>
 <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">image</var>
, </td>
</td>
</tr>
<tr valign="top">
<td> </td>
<td>
<a xmlns="http://www.w3.org/1999/xhtml" class="link" href="scalarDataTypes.html" target="pagedisplay">int</a>
 <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">coord</var>
, </td>
</tr>
<tr valign="top">
<td> </td>
<td>
<a xmlns="http://www.w3.org/1999/xhtml" class="link" href="vectorDataTypes.html" target="pagedisplay">half4</a>
 <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">color</var>
<code>)</code></td>
</tr>
</table>
</div>
<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">void</a>
<strong class="fsfunc">
write_imageh
</strong>
(</code>
<td>
<a xmlns="http://www.w3.org/1999/xhtml" class="link" href="otherDataTypes.html" target="pagedisplay">image1d_array_t</a>
 <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">image</var>
, </td>
</td>
</tr>
<tr valign="top">
<td> </td>
<td>
<a xmlns="http://www.w3.org/1999/xhtml" class="link" href="vectorDataTypes.html" target="pagedisplay">int2</a>
 <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">coord</var>
, </td>
</tr>
<tr valign="top">
<td> </td>
<td>
<a xmlns="http://www.w3.org/1999/xhtml" class="link" href="vectorDataTypes.html" target="pagedisplay">half4</a>
 <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">color</var>
<code>)</code></td>
</tr>
</table>
</div>
<h2><a id="id-1.4.15"></a>Functions added with mipmap support enabled by extension
<code class="code">cl_khr_mipmap_image</code>:</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">void</a>
<strong class="fsfunc">
write_imagef
</strong>
(</code>
<td>
<a xmlns="http://www.w3.org/1999/xhtml" class="link" href="otherDataTypes.html" target="pagedisplay">image1d_t</a>
 <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">image</var>
, </td>
</td>
</tr>
<tr valign="top">
<td> </td>
<td>
<a xmlns="http://www.w3.org/1999/xhtml" class="link" href="scalarDataTypes.html" target="pagedisplay">int</a>
 <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">coord</var>
, </td>
</tr>
<tr valign="top">
<td> </td>
<td>
<a xmlns="http://www.w3.org/1999/xhtml" class="link" href="scalarDataTypes.html" target="pagedisplay">int</a>
 <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">lod</var>
, </td>
</tr>
<tr valign="top">
<td> </td>
<td>
<a xmlns="http://www.w3.org/1999/xhtml" class="link" href="vectorDataTypes.html" target="pagedisplay">float4</a>
 <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">color</var>
<code>)</code></td>
</tr>
</table>
</div>
<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">void</a>
<strong class="fsfunc">
write_imagei
</strong>
(</code>
<td>
<a xmlns="http://www.w3.org/1999/xhtml" class="link" href="otherDataTypes.html" target="pagedisplay">image1d_t</a>
 <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">image</var>
, </td>
</td>
</tr>
<tr valign="top">
<td> </td>
<td>
<a xmlns="http://www.w3.org/1999/xhtml" class="link" href="scalarDataTypes.html" target="pagedisplay">int</a>
 <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">coord</var>
, </td>
</tr>
<tr valign="top">
<td> </td>
<td>
<a xmlns="http://www.w3.org/1999/xhtml" class="link" href="scalarDataTypes.html" target="pagedisplay">int</a>
 <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">lod</var>
, </td>
</tr>
<tr valign="top">
<td> </td>
<td>
<a xmlns="http://www.w3.org/1999/xhtml" class="link" href="vectorDataTypes.html" target="pagedisplay">int4</a>
 <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">color</var>
<code>)</code></td>
</tr>
</table>
</div>
<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">void</a>
<strong class="fsfunc">
write_imageui
</strong>
(</code>
<td>
<a xmlns="http://www.w3.org/1999/xhtml" class="link" href="otherDataTypes.html" target="pagedisplay">image1d_t</a>
 <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">image</var>
, </td>
</td>
</tr>
<tr valign="top">
<td> </td>
<td>
<a xmlns="http://www.w3.org/1999/xhtml" class="link" href="scalarDataTypes.html" target="pagedisplay">int</a>
 <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">coord</var>
, </td>
</tr>
<tr valign="top">
<td> </td>
<td>
<a xmlns="http://www.w3.org/1999/xhtml" class="link" href="scalarDataTypes.html" target="pagedisplay">int</a>
 <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">lod</var>
, </td>
</tr>
<tr valign="top">
<td> </td>
<td>
<a xmlns="http://www.w3.org/1999/xhtml" class="link" href="vectorDataTypes.html" target="pagedisplay">uint4</a>
 <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">color</var>
<code>)</code></td>
</tr>
</table>
</div>
<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">void</a>
<strong class="fsfunc">
write_imagef
</strong>
(</code>
<td>
<a xmlns="http://www.w3.org/1999/xhtml" class="link" href="otherDataTypes.html" target="pagedisplay">image1d_array_t</a>
 <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">image</var>
, </td>
</td>
</tr>
<tr valign="top">
<td> </td>
<td>
<a xmlns="http://www.w3.org/1999/xhtml" class="link" href="vectorDataTypes.html" target="pagedisplay">int2</a>
 <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">coord</var>
, </td>
</tr>
<tr valign="top">
<td> </td>
<td>
<a xmlns="http://www.w3.org/1999/xhtml" class="link" href="scalarDataTypes.html" target="pagedisplay">int</a>
 <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">lod</var>
, </td>
</tr>
<tr valign="top">
<td> </td>
<td>
<a xmlns="http://www.w3.org/1999/xhtml" class="link" href="vectorDataTypes.html" target="pagedisplay">float4</a>
 <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">color</var>
<code>)</code></td>
</tr>
</table>
</div>
<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">void</a>
<strong class="fsfunc">
write_imagei
</strong>
(</code>
<td>
<a xmlns="http://www.w3.org/1999/xhtml" class="link" href="otherDataTypes.html" target="pagedisplay">image1d_array_t</a>
 <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">image</var>
, </td>
</td>
</tr>
<tr valign="top">
<td> </td>
<td>
<a xmlns="http://www.w3.org/1999/xhtml" class="link" href="vectorDataTypes.html" target="pagedisplay">int2</a>
 <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">coord</var>
, </td>
</tr>
<tr valign="top">
<td> </td>
<td>
<a xmlns="http://www.w3.org/1999/xhtml" class="link" href="scalarDataTypes.html" target="pagedisplay">int</a>
 <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">lod</var>
, </td>
</tr>
<tr valign="top">
<td> </td>
<td>
<a xmlns="http://www.w3.org/1999/xhtml" class="link" href="vectorDataTypes.html" target="pagedisplay">int4</a>
 <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">color</var>
<code>)</code></td>
</tr>
</table>
</div>
<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">void</a>
<strong class="fsfunc">
write_imageui
</strong>
(</code>
<td>
<a xmlns="http://www.w3.org/1999/xhtml" class="link" href="otherDataTypes.html" target="pagedisplay">image1d_array_t</a>
 <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">image</var>
, </td>
</td>
</tr>
<tr valign="top">
<td> </td>
<td>
<a xmlns="http://www.w3.org/1999/xhtml" class="link" href="vectorDataTypes.html" target="pagedisplay">int2</a>
 <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">coord</var>
, </td>
</tr>
<tr valign="top">
<td> </td>
<td>
<a xmlns="http://www.w3.org/1999/xhtml" class="link" href="scalarDataTypes.html" target="pagedisplay">int</a>
 <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">lod</var>
, </td>
</tr>
<tr valign="top">
<td> </td>
<td>
<a xmlns="http://www.w3.org/1999/xhtml" class="link" href="vectorDataTypes.html" target="pagedisplay">uint4</a>
 <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">color</var>
<code>)</code></td>
</tr>
</table>
</div>
</div>
<div class="refsect1">
<a id="description"></a>
<h2>Description</h2>
<p>
<code class="varname">aQual</code> refers to one of the access
qualifiers. For write functions this may be
<code class="code">write_only</code> or <code class="code">read_write</code>.
</p>
<h4><a id="id-1.5.3"></a>For <code class="function">write_imagef</code>, <code class="function">write_imagei</code>,
and <code class="function">write_imageui</code> forms that take <span class="type">image1d_t</span> or <span class="type">image1d_buffer_t</span>:</h4>
<p>
Write <code class="varname">color</code> value to location
specified by <code class="varname">coord</code> in
the 1D image or 1D image buffer object specified by
<code class="varname">image</code>. Appropriate data format conversion to the
specified image format is done before writing the
color value. <code class="varname">coord</code> is considered to be unnormalized
coordinates and must be in the range 0 ... image
width – 1.
</p>
<p>
<code class="function">write_imagef</code> can only be used with image objects created with
<code class="varname">image_channel_data_type</code> set to one of the pre-defined packed formats
or set to <code class="constant">CL_SNORM_INT8</code>, <code class="constant">CL_UNORM_INT8</code>,
<code class="constant">CL_SNORM_INT16</code>, <code class="constant">CL_UNORM_INT16</code>,
<code class="constant">CL_HALF_FLOAT</code>, or <code class="constant">CL_FLOAT</code>. 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.
</p>
<p>
<code class="function">write_imagei</code> functions can only be used with image objects
created with <code class="varname">image_channel_data_type</code> set to one of the following
values: <code class="constant">CL_SIGNED_INT8</code>, <code class="constant">CL_SIGNED_INT16</code>,
or <code class="constant">CL_SIGNED_INT32</code>.
</p>
<p>
<code class="function">write_imageui</code> functions can only be used with image objects
created with <code class="varname">image_channel_data_type</code> set to one of the following
values: <code class="constant">CL_UNSIGNED_INT8</code>, <code class="constant">CL_UNSIGNED_INT16</code>,
or <code class="constant">CL_UNSIGNED_INT32</code>.
</p>
<p>
The behavior of <code class="function">write_imagef</code>,
<code class="function">write_imagei</code> and <code class="function">write_imageui</code> for image
objects created with <code class="varname">image_channel_data_type</code> values not specified
in the description above or with coordinate values that is not in the range
(0 … image width - 1), is undefined.
</p>
<h4><a id="id-1.5.9"></a>For <code class="function">write_imagef</code>, <code class="function">write_imagei</code>,
and <code class="function">write_imageui</code> forms that take <span class="type">image1d_array_t</span>:</h4>
<p>
Write <code class="varname">color</code> value to location
specified by <code class="varname">coord.x</code> in
the 1D image identified by <code class="varname">coord.y</code>
in the 1D image array specified by
<code class="varname">image</code>. Appropriate data format conversion to the
specified image format is done before writing the
color value. <code class="varname">coord.x</code> and
<code class="varname">coord.y</code> are considered to be unnormalized
coordinates and must be in the range 0 ... image
width – 1 and 0 … image number of layers – 1.
</p>
<p>
<code class="function">write_imagef</code> can only be used with image objects created with
<code class="varname">image_channel_data_type</code> set to one of the pre-defined packed formats
or set to <code class="constant">CL_SNORM_INT8</code>, <code class="constant">CL_UNORM_INT8</code>,
<code class="constant">CL_SNORM_INT16</code>, <code class="constant">CL_UNORM_INT16</code>,
<code class="constant">CL_HALF_FLOAT</code>, or <code class="constant">CL_FLOAT</code>. 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.
</p>
<p>
<code class="function">write_imagei</code> functions can only be used with image objects
created with <code class="varname">image_channel_data_type</code> set to one of the following
values: <code class="constant">CL_SIGNED_INT8</code>, <code class="constant">CL_SIGNED_INT16</code>,
or <code class="constant">CL_SIGNED_INT32</code>.
</p>
<p>
<code class="function">write_imageui</code> functions can only be used with image objects
created with <code class="varname">image_channel_data_type</code> set to one of the following
values: <code class="constant">CL_UNSIGNED_INT8</code>, <code class="constant">CL_UNSIGNED_INT16</code>,
or <code class="constant">CL_UNSIGNED_INT32</code>.
</p>
<p>
The behavior of <code class="function">write_imagef</code>,
<code class="function">write_imagei</code> and <code class="function">write_imageui</code> for image
objects created with <code class="varname">image_channel_data_type</code> values not specified
in the description above or with (x, y) coordinate values that are not in the range
(0 … image width - 1, 0 …image number of layers - 1), respectively, is undefined.
</p>
<h4><a id="id-1.5.15"></a>For <code class="function">write_imageh</code>:</h4>
<p>
The <code class="function">write_imageh</code> functions are enabled when the half type is
supported and can only be used with image objects created with
<code class="varname">image_channel_data_type</code> set to one of the pre-defined packed formats
or set to <code class="constant">CL_SNORM_INT8</code>, <code class="constant">CL_UNORM_INT8</code>,
<code class="constant">CL_SNORM_INT16</code>, <code class="constant">CL_UNORM_INT16</code> or
<code class="constant">CL_HALF_FLOAT</code>.
Appropriate data format conversion to the specified
image format is done before writing the color value.
<code class="varname">x</code> &amp; <code class="varname">y</code> are
considered to be unnormalized coordinates
and must be in the range 0 ... width – 1, and 0 …
height – 1.
</p>
<h4><a id="id-1.5.17"></a>Mipmap write image functions enabled by
<a class="citerefentry" href="cl_khr_mipmap_image.html"><span class="citerefentry"><span class="refentrytitle">cl_khr_mipmap_image</span></span></a>:</h4>
<p>
For the image write 1D functions enabled by the mipmap extension
that take an <span class="type">image1d_t</span> object,
write <code class="varname">color</code> value to location specified by
<code class="varname">coord</code> in the mip-level specified by
<code class="varname">lod</code> in the 1D image
object specified by <code class="varname">image</code>. Appropriate data format
conversion to the specified image format is done
before writing the color value. <code class="varname">coord</code> is considered to be
an unnormalized coordinate and
must be in the range 0… image width of the mip-level
specified by <code class="varname">lod</code> – 1.
</p>
<p>
In these functions, the behavior of <code class="function">write_imagef</code>,
<code class="function">write_imagei</code>, and
<code class="function">write_imageui</code> if the coordinate value is not in
the range (0… image width of the mip-level
specified by <code class="varname">lod</code> – 1) or <code class="varname">lod</code> value exceeds the
(number of mip-levels in the image – 1) is
undefined.
</p>
<p>
For the image write 1D functions enabled by the mipmap extension
that take an <span class="type">image1d_array_t</span> object,
write <code class="varname">color</code> value to location specified by
<code class="varname">coord.x</code> in the 1D image
specified by <code class="varname">coord.y</code> and mip-level <code class="varname">lod</code>
in the 1D image array specified by <code class="varname">image</code>. Appropriate data format
conversion to the specified image format is done
before writing the color value. <code class="varname">coord.x</code> and
<code class="varname">coord.y</code> are considered to be unnormalized
coordinates and
must be in the range 0… image width of mip-level
specified by <code class="varname">lod</code> - 1 and 0… image number of layers - 1.
</p>
<p>
In these functions, the behavior of <code class="function">write_imagef</code>,
<code class="function">write_imagei</code>, and
<code class="function">write_imageui</code> if (<span class="emphasis"><em>x, y</em></span>)
coordinate values are not
in the range (0… image width of the mip-level
specified by <code class="varname">lod</code> – 1, 0… image number of
layers – 1), respectively or <code class="varname">lod</code> value exceeds the
(number of mip-levels in the image – 1), is
undefined.
</p>
</div>
<div class="refsect1">
<a id="notes"></a>
<h2>Notes</h2>
<p>
The built-in functions defined in this section
can only be used with image memory objects. An image memory object can be accessed by
specific function calls that read from and/or write to specific locations in the image.
</p>
<p>
Note that image writes to sRGB images are only supported if the
<a class="citerefentry" href="cl_khr_srgb_image_writes.html"><span class="citerefentry"><span class="refentrytitle">cl_khr_srgb_image_writes</span></span></a>
extension is supported;
otherwise the behavior of writing to a sRGB image is undefined.
</p>
<p>
Image memory objects that are being read by a kernel should be declared with the <a class="citerefentry" href="accessQualifiers.html"><span class="citerefentry"><span class="refentrytitle">read_only</span></span></a>
qualifier. <code class="function">write_image</code> calls to image memory objects declared with the
<a class="citerefentry" href="accessQualifiers.html"><span class="citerefentry"><span class="refentrytitle">read_only</span></span></a>
qualifier will generate a compilation error. Image memory objects that
are being written to by a kernel should be declared with the <a class="citerefentry" href="accessQualifiers.html"><span class="citerefentry"><span class="refentrytitle">write_only</span></span></a> qualifier.
<code class="function">read_image</code> calls to image memory objects declared with the <a class="citerefentry" href="accessQualifiers.html"><span class="citerefentry"><span class="refentrytitle">write_only</span></span></a>
qualifier will generate a compilation error. <code class="function">read_image</code> and
<code class="function">write_image</code> calls to the same image memory object in a kernel are
not supported.
Image memory objects that are being read and written by a kernel should be declared with the
<a class="citerefentry" href="accessQualifiers.html"><span class="citerefentry"><span class="refentrytitle">read_write</span></span></a>
qualifier.
</p>
<p>
The <code class="function">read_image</code> calls returns a four component floating-point, integer or
unsigned integer color value. The color values returned by <code class="function">read_image</code>
are identified as <code class="code">x, y, z, w</code> where <code class="code">x</code> refers to the red component,
<code class="code">y</code> refers to the green component, <code class="code">z</code> refers to the blue component
and <code class="code">w</code> refers to the alpha component.
</p>
<p>
The samplerless read image functions behave exactly as the corresponding read
image functions that take integer coordinates and a sampler with filter mode
set to <code class="constant">CLK_FILTER_NEAREST</code>, normalized coordinates set
to <code class="constant">CLK_NORMALIZED_COORDS_FALSE</code> and addressing mode to
<code class="constant">CLK_ADDRESS_NONE</code>.
</p>
<h4><a id="id-1.6.7"></a>sRGB Images</h4>
<p>
The built-in image read functions will perform
sRGB to linear RGB conversions if the image is
an sRGB image. Writing to sRGB images from a
kernel is an optional extension. The
<a class="citerefentry" href="cl_khr_srgb_image_writes.html"><span class="citerefentry"><span class="refentrytitle">cl_khr_srgb_image_writes</span></span></a>
extension will be reported in the
<code class="constant">CL_DEVICE_EXTENSIONS</code> string
if a device supports writing to sRGB images using
<a class="citerefentry" href="imageFunctions.html"><span class="citerefentry"><span class="refentrytitle">write_imagef</span></span></a>.
<a class="citerefentry" href="clGetSupportedImageFormats.html"><span class="citerefentry"><span class="refentrytitle">clGetSupportedImageFormats</span></span></a>
will return the supported sRGB images if
<code class="constant">CL_MEM_READ_WRITE</code> or
<code class="constant">CL_MEM_WRITE_ONLY</code> is specified in
<code class="varname">flags</code> argument and the
device supports writing to an sRGB image. If
<a class="citerefentry" href="cl_khr_srgb_image_writes.html"><span class="citerefentry"><span class="refentrytitle">cl_khr_srgb_image_writes</span></span></a>
is supported, the
built-in image write functions will perform
the linear to sRGB conversion.
</p>
<p>
Only the R, G and B components are converted from
linear to sRGB and vice-versa. The alpha
component is returned as is.
</p>
<h4><a id="id-1.6.10"></a>Mapping image channels to color values</h4>
<p>
The following table describes the mapping
of the number of channels of an image element to the appropriate components in the
<span class="type">float4</span>, <span class="type">int4</span> or <span class="type">uint4</span> vector data type for
the color values returned by <code class="function">read_image{f|i|ui}</code> or supplied
to <code class="function">write_image{f|i|ui}</code>. The unmapped components will be set
to <code class="constant">0.0</code> for red, green and blue channels and will be set to
<code class="constant">1.0</code> for the alpha channel.
</p>
<p>
</p>
<div class="informaltable">
<table class="informaltable" border="1">
<colgroup>
<col align="center" class="col1" />
<col align="center" class="col2" />
</colgroup>
<thead>
<tr>
<th align="center">Channel Order</th>
<th align="center"><span class="type">float4</span>, <span class="type">int4</span> or <span class="type">uint4</span> components of channel data</th>
</tr>
</thead>
<tbody>
<tr>
<td align="center"><code class="constant">CL_R</code>, <code class="constant">CL_Rx</code></td>
<td align="center">
<code class="constant">(r, 0.0, 0.0, 1.0)</code>
</td>
</tr>
<tr>
<td align="center">
<code class="constant">CL_A</code>
</td>
<td align="center">
<code class="constant">(0.0, 0.0, 0.0, a)</code>
</td>
</tr>
<tr>
<td align="center"><code class="constant">CL_RG</code>, <code class="constant">CL_RGx</code></td>
<td align="center">
<code class="constant">(r, g, 0.0, 1.0)</code>
</td>
</tr>
<tr>
<td align="center">
<code class="constant">CL_RA</code>
</td>
<td align="center">
<code class="constant">(r, 0.0, 0.0, a)</code>
</td>
</tr>
<tr>
<td align="center">
<code class="constant">CL_RGB</code>,
<code class="constant">CL_RGBx</code>,
<code class="constant">CL_sRGB</code>,
<code class="constant">CL_sRGBx</code>
</td>
<td align="center">
<code class="constant">(r, g, b, 1.0)</code>
</td>
</tr>
<tr>
<td align="center">
<code class="constant">CL_RGBA, CL_BGRA, CL_ARGB, CL_ABGR, CL_sRGBA, CL_sBGRA</code>
</td>
<td align="center">
<code class="constant">(r, g, b, a)</code>
</td>
</tr>
<tr>
<td align="center">
<code class="constant">CL_INTENSITY</code>
</td>
<td align="center">
<code class="constant">(I, I, I, I)</code>
</td>
</tr>
<tr>
<td align="center">
<code class="constant">CL_LUMINANCE</code>
</td>
<td align="center">
<code class="constant">(L, L, L, 1.0)</code>
</td>
</tr>
</tbody>
</table>
</div>
<p>
</p>
<p>
For <code class="constant">CL_DEPTH</code> images, a scalar value is
returned by <code class="function">read_imagef</code> or supplied to
<code class="function">write_imagef</code>.
</p>
<p>
A kernel that uses a sampler with the <code class="constant">CL_ADDRESS_CLAMP</code> addressing
mode with multiple images may result in additional samplers being used internally
by an implementation. If the same sampler is used with multiple images called via
<code class="function">read_image{f|i|ui}</code>, then it is possible that an implementation may
need to allocate an additional sampler to handle the different border color values that
may be needed depending on the image formats being used. These implementation allocated
samplers will count against the maximum sampler values supported by the device and given by
<code class="constant">CL_DEVICE_MAX_SAMPLERS</code>. Enqueuing a kernel that requires more samplers
than the implementation can support will result in a <code class="constant">CL_OUT_OF_RESOURCES</code>
error being returned.
</p>
</div>
<div class="refsect1">
<a id="specification"></a>
<h2>Specification</h2>
<p>
<img src="pdficon_small1.gif" />
<a href="https://www.khronos.org/registry/cl/specs/opencl-2.0-openclc.pdf#namedest=imageFunctions" target="OpenCL Spec">OpenCL Specification</a>
</p>
</div>
<div class="refsect1">
<a id="seealso"></a>
<h2>Also see</h2>
<p>
<a class="citerefentry" href="imageFunctions.html"><span class="citerefentry"><span class="refentrytitle">Image Functions</span></span></a>,
<a class="citerefentry" href="cl_khr_mipmap_image.html"><span class="citerefentry"><span class="refentrytitle">cl_khr_mipmap_image</span></span></a>,
<a class="citerefentry" href="sampler_t.html"><span class="citerefentry"><span class="refentrytitle">sampler_t</span></span></a>
</p>
</div>
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