blob: d020b99a9218f2454b7390559905e8ce67a25417 [file]
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta name="generator" content="Asciidoctor 2.0.23">
<title>clSetKernelArg(3)</title>
<style>
/*! normalize.css v2.1.2 | MIT License | git.io/normalize */
/* ========================================================================== HTML5 display definitions ========================================================================== */
/** Correct `block` display not defined in IE 8/9. */
article, aside, details, figcaption, figure, footer, header, hgroup, main, nav, section, summary { display: block; }
/** Correct `inline-block` display not defined in IE 8/9. */
audio, canvas, video { display: inline-block; }
/** Prevent modern browsers from displaying `audio` without controls. Remove excess height in iOS 5 devices. */
audio:not([controls]) { display: none; height: 0; }
/** Address `[hidden]` styling not present in IE 8/9. Hide the `template` element in IE, Safari, and Firefox < 22. */
[hidden], template { display: none; }
script { display: none !important; }
/* ========================================================================== Base ========================================================================== */
/** 1. Set default font family to sans-serif. 2. Prevent iOS text size adjust after orientation change, without disabling user zoom. */
html { font-family: sans-serif; /* 1 */ -ms-text-size-adjust: 100%; /* 2 */ -webkit-text-size-adjust: 100%; /* 2 */ }
/** Remove default margin. */
body { margin: 0; }
/* ========================================================================== Links ========================================================================== */
/** Remove the gray background color from active links in IE 10. */
a { background: transparent; }
/** Address `outline` inconsistency between Chrome and other browsers. */
a:focus { outline: thin dotted; }
/** Improve readability when focused and also mouse hovered in all browsers. */
a:active, a:hover { outline: 0; }
/* ========================================================================== Typography ========================================================================== */
/** Address variable `h1` font-size and margin within `section` and `article` contexts in Firefox 4+, Safari 5, and Chrome. */
h1 { font-size: 2em; margin: 0.67em 0; }
/** Address styling not present in IE 8/9, Safari 5, and Chrome. */
abbr[title] { border-bottom: 1px dotted; }
/** Address style set to `bolder` in Firefox 4+, Safari 5, and Chrome. */
b, strong { font-weight: bold; }
/** Address styling not present in Safari 5 and Chrome. */
dfn { font-style: italic; }
/** Address differences between Firefox and other browsers. */
hr { -moz-box-sizing: content-box; box-sizing: content-box; height: 0; }
/** Address styling not present in IE 8/9. */
mark { background: #ff0; color: #000; }
/** Correct font family set oddly in Safari 5 and Chrome. */
code, kbd, pre, samp { font-family: monospace, serif; font-size: 1em; }
/** Improve readability of pre-formatted text in all browsers. */
pre { white-space: pre-wrap; }
/** Set consistent quote types. */
q { quotes: "\201C" "\201D" "\2018" "\2019"; }
/** Address inconsistent and variable font size in all browsers. */
small { font-size: 80%; }
/** Prevent `sub` and `sup` affecting `line-height` in all browsers. */
sub, sup { font-size: 75%; line-height: 0; position: relative; vertical-align: baseline; }
sup { top: -0.5em; }
sub { bottom: -0.25em; }
/* ========================================================================== Embedded content ========================================================================== */
/** Remove border when inside `a` element in IE 8/9. */
img { border: 0; }
/** Correct overflow displayed oddly in IE 9. */
svg:not(:root) { overflow: hidden; }
/* ========================================================================== Figures ========================================================================== */
/** Address margin not present in IE 8/9 and Safari 5. */
figure { margin: 0; }
/* ========================================================================== Forms ========================================================================== */
/** Define consistent border, margin, and padding. */
fieldset { border: 1px solid #c0c0c0; margin: 0 2px; padding: 0.35em 0.625em 0.75em; }
/** 1. Correct `color` not being inherited in IE 8/9. 2. Remove padding so people aren't caught out if they zero out fieldsets. */
legend { border: 0; /* 1 */ padding: 0; /* 2 */ }
/** 1. Correct font family not being inherited in all browsers. 2. Correct font size not being inherited in all browsers. 3. Address margins set differently in Firefox 4+, Safari 5, and Chrome. */
button, input, select, textarea { font-family: inherit; /* 1 */ font-size: 100%; /* 2 */ margin: 0; /* 3 */ }
/** Address Firefox 4+ setting `line-height` on `input` using `!important` in the UA stylesheet. */
button, input { line-height: normal; }
/** Address inconsistent `text-transform` inheritance for `button` and `select`. All other form control elements do not inherit `text-transform` values. Correct `button` style inheritance in Chrome, Safari 5+, and IE 8+. Correct `select` style inheritance in Firefox 4+ and Opera. */
button, select { text-transform: none; }
/** 1. Avoid the WebKit bug in Android 4.0.* where (2) destroys native `audio` and `video` controls. 2. Correct inability to style clickable `input` types in iOS. 3. Improve usability and consistency of cursor style between image-type `input` and others. */
button, html input[type="button"], input[type="reset"], input[type="submit"] { -webkit-appearance: button; /* 2 */ cursor: pointer; /* 3 */ }
/** Re-set default cursor for disabled elements. */
button[disabled], html input[disabled] { cursor: default; }
/** 1. Address box sizing set to `content-box` in IE 8/9. 2. Remove excess padding in IE 8/9. */
input[type="checkbox"], input[type="radio"] { box-sizing: border-box; /* 1 */ padding: 0; /* 2 */ }
/** 1. Address `appearance` set to `searchfield` in Safari 5 and Chrome. 2. Address `box-sizing` set to `border-box` in Safari 5 and Chrome (include `-moz` to future-proof). */
input[type="search"] { -webkit-appearance: textfield; /* 1 */ -moz-box-sizing: content-box; -webkit-box-sizing: content-box; /* 2 */ box-sizing: content-box; }
/** Remove inner padding and search cancel button in Safari 5 and Chrome on OS X. */
input[type="search"]::-webkit-search-cancel-button, input[type="search"]::-webkit-search-decoration { -webkit-appearance: none; }
/** Remove inner padding and border in Firefox 4+. */
button::-moz-focus-inner, input::-moz-focus-inner { border: 0; padding: 0; }
/** 1. Remove default vertical scrollbar in IE 8/9. 2. Improve readability and alignment in all browsers. */
textarea { overflow: auto; /* 1 */ vertical-align: top; /* 2 */ }
/* ========================================================================== Tables ========================================================================== */
/** Remove most spacing between table cells. */
table { border-collapse: collapse; border-spacing: 0; }
meta.foundation-mq-small { font-family: "only screen and (min-width: 768px)"; width: 768px; }
meta.foundation-mq-medium { font-family: "only screen and (min-width:1280px)"; width: 1280px; }
meta.foundation-mq-large { font-family: "only screen and (min-width:1440px)"; width: 1440px; }
*, *:before, *:after { -moz-box-sizing: border-box; -webkit-box-sizing: border-box; box-sizing: border-box; }
html, body { font-size: 100%; }
body { background: #fff; color: #222; padding: 0; margin: 0; font-family: "Helvetica Neue", "Helvetica", Helvetica, Arial, sans-serif; font-weight: normal; font-style: normal; line-height: 1; position: relative; cursor: auto; }
a:hover { cursor: pointer; }
img, object, embed { max-width: 100%; height: auto; }
object, embed { height: 100%; }
img { -ms-interpolation-mode: bicubic; }
#map_canvas img, #map_canvas embed, #map_canvas object, .map_canvas img, .map_canvas embed, .map_canvas object { max-width: none !important; }
.left { float: left !important; }
.right { float: right !important; }
.text-left { text-align: left !important; }
.text-right { text-align: right !important; }
.text-center { text-align: center !important; }
.text-justify { text-align: justify !important; }
.hide { display: none; }
.antialiased { -webkit-font-smoothing: antialiased; }
img { display: inline-block; vertical-align: middle; }
textarea { height: auto; min-height: 50px; }
select { width: 100%; }
object, svg { display: inline-block; vertical-align: middle; }
.center { margin-left: auto; margin-right: auto; }
.spread { width: 100%; }
p.lead, .paragraph.lead > p, #preamble > .sectionbody > .paragraph:first-of-type p { font-size: 1.21875em; line-height: 1.6; }
.subheader, .admonitionblock td.content > .title, .audioblock > .title, .exampleblock > .title, .imageblock > .title, .listingblock > .title, .literalblock > .title, .stemblock > .title, .openblock > .title, .paragraph > .title, .quoteblock > .title, table.tableblock > .title, .verseblock > .title, .videoblock > .title, .dlist > .title, .olist > .title, .ulist > .title, .qlist > .title, .hdlist > .title { line-height: 1.4; color: black; font-weight: 300; margin-top: 0.2em; margin-bottom: 0.5em; }
/* Typography resets */
div, dl, dt, dd, ul, ol, li, h1, h2, h3, #toctitle, .sidebarblock > .content > .title, h4, h5, h6, pre, form, p, blockquote, th, td { margin: 0; padding: 0; direction: ltr; }
/* Default Link Styles */
a { color: #0068b0; text-decoration: none; line-height: inherit; }
a:hover, a:focus { color: #333; }
a img { border: none; }
/* Default paragraph styles */
p { font-family: Noto, sans-serif; font-weight: normal; font-size: 1em; line-height: 1.6; margin-bottom: 0.75em; text-rendering: optimizeLegibility; }
p aside { font-size: 0.875em; line-height: 1.35; font-style: italic; }
/* Default header styles */
h1, h2, h3, #toctitle, .sidebarblock > .content > .title, h4, h5, h6 { font-family: Noto, sans-serif; font-weight: normal; font-style: normal; color: black; text-rendering: optimizeLegibility; margin-top: 0.5em; margin-bottom: 0.5em; line-height: 1.2125em; }
h1 small, h2 small, h3 small, #toctitle small, .sidebarblock > .content > .title small, h4 small, h5 small, h6 small { font-size: 60%; color: #4d4d4d; line-height: 0; }
h1 { font-size: 2.125em; }
h2 { font-size: 1.6875em; }
h3, #toctitle, .sidebarblock > .content > .title { font-size: 1.375em; }
h4 { font-size: 1.125em; }
h5 { font-size: 1.125em; }
h6 { font-size: 1em; }
hr { border: solid #ddd; border-width: 1px 0 0; clear: both; margin: 1.25em 0 1.1875em; height: 0; }
/* Helpful Typography Defaults */
em, i { font-style: italic; line-height: inherit; }
strong, b { font-weight: bold; line-height: inherit; }
small { font-size: 60%; line-height: inherit; }
code { font-family: Consolas, "Liberation Mono", Courier, monospace; font-weight: normal; color: #264357; }
/* Lists */
ul, ol, dl { font-size: 1em; line-height: 1.6; margin-bottom: 0.75em; list-style-position: outside; font-family: Noto, sans-serif; }
ul, ol { margin-left: 1.5em; }
ul.no-bullet, ol.no-bullet { margin-left: 1.5em; }
/* Unordered Lists */
ul li ul, ul li ol { margin-left: 1.25em; margin-bottom: 0; font-size: 1em; /* Override nested font-size change */ }
ul.square li ul, ul.circle li ul, ul.disc li ul { list-style: inherit; }
ul.square { list-style-type: square; }
ul.circle { list-style-type: circle; }
ul.disc { list-style-type: disc; }
ul.no-bullet { list-style: none; }
/* Ordered Lists */
ol li ul, ol li ol { margin-left: 1.25em; margin-bottom: 0; }
/* Definition Lists */
dl dt { margin-bottom: 0.3em; font-weight: bold; }
dl dd { margin-bottom: 0.75em; }
/* Abbreviations */
abbr, acronym { text-transform: uppercase; font-size: 90%; color: black; border-bottom: 1px dotted #ddd; cursor: help; }
abbr { text-transform: none; }
/* Blockquotes */
blockquote { margin: 0 0 0.75em; padding: 0.5625em 1.25em 0 1.1875em; border-left: 1px solid #ddd; }
blockquote cite { display: block; font-size: 0.8125em; color: #365E7A; }
blockquote cite:before { content: "\2014 \0020"; }
blockquote cite a, blockquote cite a:visited { color: #365E7A; }
blockquote, blockquote p { line-height: 1.6; color: #333; }
/* Microformats */
.vcard { display: inline-block; margin: 0 0 1.25em 0; border: 1px solid #ddd; padding: 0.625em 0.75em; }
.vcard li { margin: 0; display: block; }
.vcard .fn { font-weight: bold; font-size: 0.9375em; }
.vevent .summary { font-weight: bold; }
.vevent abbr { cursor: auto; text-decoration: none; font-weight: bold; border: none; padding: 0 0.0625em; }
@media only screen and (min-width: 768px) { h1, h2, h3, #toctitle, .sidebarblock > .content > .title, h4, h5, h6 { line-height: 1.4; }
h1 { font-size: 2.75em; }
h2 { font-size: 2.3125em; }
h3, #toctitle, .sidebarblock > .content > .title { font-size: 1.6875em; }
h4 { font-size: 1.4375em; } }
/* Tables */
table { background: #fff; margin-bottom: 1.25em; border: solid 1px #d8d8ce; }
table thead, table tfoot { background: #eee; font-weight: bold; }
table thead tr th, table thead tr td, table tfoot tr th, table tfoot tr td { padding: 0.5em 0.625em 0.625em; font-size: inherit; color: #222; text-align: left; }
table tr th, table tr td { padding: 0.5625em 0.625em; font-size: inherit; color: #6d6e71; }
table tr.even, table tr.alt, table tr:nth-of-type(even) { background: #f8f8f8; }
table thead tr th, table tfoot tr th, table tbody tr td, table tr td, table tfoot tr td { display: table-cell; line-height: 1.4; }
body { -moz-osx-font-smoothing: grayscale; -webkit-font-smoothing: antialiased; tab-size: 4; }
h1, h2, h3, #toctitle, .sidebarblock > .content > .title, h4, h5, h6 { line-height: 1.4; }
a:hover, a:focus { text-decoration: underline; }
.clearfix:before, .clearfix:after, .float-group:before, .float-group:after { content: " "; display: table; }
.clearfix:after, .float-group:after { clear: both; }
*:not(pre) > code { font-size: inherit; font-style: normal !important; letter-spacing: 0; padding: 0; background-color: transparent; -webkit-border-radius: 0; border-radius: 0; line-height: inherit; word-wrap: break-word; }
*:not(pre) > code.nobreak { word-wrap: normal; }
*:not(pre) > code.nowrap { white-space: nowrap; }
pre, pre > code { line-height: 1.6; color: #264357; font-family: Consolas, "Liberation Mono", Courier, monospace; font-weight: normal; }
em em { font-style: normal; }
strong strong { font-weight: normal; }
.keyseq { color: #333333; }
kbd { font-family: Consolas, "Liberation Mono", Courier, monospace; display: inline-block; color: black; font-size: 0.65em; line-height: 1.45; background-color: #f7f7f7; border: 1px solid #ccc; -webkit-border-radius: 3px; border-radius: 3px; -moz-box-shadow: 0 1px 0 rgba(0, 0, 0, 0.2), 0 0 0 0.1em white inset; -webkit-box-shadow: 0 1px 0 rgba(0, 0, 0, 0.2), 0 0 0 0.1em white inset; box-shadow: 0 1px 0 rgba(0, 0, 0, 0.2), 0 0 0 0.1em white inset; margin: 0 0.15em; padding: 0.2em 0.5em; vertical-align: middle; position: relative; top: -0.1em; white-space: nowrap; }
.keyseq kbd:first-child { margin-left: 0; }
.keyseq kbd:last-child { margin-right: 0; }
.menuseq, .menuref { color: #000; }
.menuseq b:not(.caret), .menuref { font-weight: inherit; }
.menuseq { word-spacing: -0.02em; }
.menuseq b.caret { font-size: 1.25em; line-height: 0.8; }
.menuseq i.caret { font-weight: bold; text-align: center; width: 0.45em; }
b.button:before, b.button:after { position: relative; top: -1px; font-weight: normal; }
b.button:before { content: "["; padding: 0 3px 0 2px; }
b.button:after { content: "]"; padding: 0 2px 0 3px; }
#header, #content, #footnotes, #footer { width: 100%; margin-left: auto; margin-right: auto; margin-top: 0; margin-bottom: 0; max-width: 62.5em; *zoom: 1; position: relative; padding-left: 1.5em; padding-right: 1.5em; }
#header:before, #header:after, #content:before, #content:after, #footnotes:before, #footnotes:after, #footer:before, #footer:after { content: " "; display: table; }
#header:after, #content:after, #footnotes:after, #footer:after { clear: both; }
#content { margin-top: 1.25em; }
#content:before { content: none; }
#header > h1:first-child { color: black; margin-top: 2.25rem; margin-bottom: 0; }
#header > h1:first-child + #toc { margin-top: 8px; border-top: 1px solid #ddd; }
#header > h1:only-child, body.toc2 #header > h1:nth-last-child(2) { border-bottom: 1px solid #ddd; padding-bottom: 8px; }
#header .details { border-bottom: 1px solid #ddd; line-height: 1.45; padding-top: 0.25em; padding-bottom: 0.25em; padding-left: 0.25em; color: #365E7A; display: -ms-flexbox; display: -webkit-flex; display: flex; -ms-flex-flow: row wrap; -webkit-flex-flow: row wrap; flex-flow: row wrap; }
#header .details span:first-child { margin-left: -0.125em; }
#header .details span.email a { color: #333; }
#header .details br { display: none; }
#header .details br + span:before { content: "\00a0\2013\00a0"; }
#header .details br + span.author:before { content: "\00a0\22c5\00a0"; color: #333; }
#header .details br + span#revremark:before { content: "\00a0|\00a0"; }
#header #revnumber { text-transform: capitalize; }
#header #revnumber:after { content: "\00a0"; }
#content > h1:first-child:not([class]) { color: black; border-bottom: 1px solid #ddd; padding-bottom: 8px; margin-top: 0; padding-top: 1rem; margin-bottom: 1.25rem; }
#toc { border-bottom: 0 solid #ddd; padding-bottom: 0.5em; }
#toc > ul { margin-left: 0.125em; }
#toc ul.sectlevel0 > li > a { font-style: italic; }
#toc ul.sectlevel0 ul.sectlevel1 { margin: 0.5em 0; }
#toc ul { font-family: Noto, sans-serif; list-style-type: none; }
#toc li { line-height: 1.3334; margin-top: 0.3334em; }
#toc a { text-decoration: none; }
#toc a:active { text-decoration: underline; }
#toctitle { color: black; font-size: 1.2em; }
@media only screen and (min-width: 768px) { #toctitle { font-size: 1.375em; }
body.toc2 { padding-left: 15em; padding-right: 0; }
#toc.toc2 { margin-top: 0 !important; background-color: #fff; position: fixed; width: 15em; left: 0; top: 0; border-right: 1px solid #ddd; border-top-width: 0 !important; border-bottom-width: 0 !important; z-index: 1000; padding: 1.25em 1em; height: 100%; overflow: auto; }
#toc.toc2 #toctitle { margin-top: 0; margin-bottom: 0.8rem; font-size: 1.2em; }
#toc.toc2 > ul { font-size: 0.9em; margin-bottom: 0; }
#toc.toc2 ul ul { margin-left: 0; padding-left: 1em; }
#toc.toc2 ul.sectlevel0 ul.sectlevel1 { padding-left: 0; margin-top: 0.5em; margin-bottom: 0.5em; }
body.toc2.toc-right { padding-left: 0; padding-right: 15em; }
body.toc2.toc-right #toc.toc2 { border-right-width: 0; border-left: 1px solid #ddd; left: auto; right: 0; } }
@media only screen and (min-width: 1280px) { body.toc2 { padding-left: 20em; padding-right: 0; }
#toc.toc2 { width: 20em; }
#toc.toc2 #toctitle { font-size: 1.375em; }
#toc.toc2 > ul { font-size: 0.95em; }
#toc.toc2 ul ul { padding-left: 1.25em; }
body.toc2.toc-right { padding-left: 0; padding-right: 20em; } }
#content #toc { border-style: solid; border-width: 1px; border-color: #e6e6e6; margin-bottom: 1.25em; padding: 1.25em; background: #fff; -webkit-border-radius: 0; border-radius: 0; }
#content #toc > :first-child { margin-top: 0; }
#content #toc > :last-child { margin-bottom: 0; }
#footer { max-width: 100%; background: none; padding: 1.25em; }
#footer-text { color: black; line-height: 1.44; }
#content { margin-bottom: 0.625em; }
.sect1 { padding-bottom: 0.625em; }
@media only screen and (min-width: 768px) { #content { margin-bottom: 1.25em; }
.sect1 { padding-bottom: 1.25em; } }
.sect1:last-child { padding-bottom: 0; }
.sect1 + .sect1 { border-top: 0 solid #ddd; }
#content h1 > a.anchor, h2 > a.anchor, h3 > a.anchor, #toctitle > a.anchor, .sidebarblock > .content > .title > a.anchor, h4 > a.anchor, h5 > a.anchor, h6 > a.anchor { position: absolute; z-index: 1001; width: 1.5ex; margin-left: -1.5ex; display: block; text-decoration: none !important; visibility: hidden; text-align: center; font-weight: normal; }
#content h1 > a.anchor:before, h2 > a.anchor:before, h3 > a.anchor:before, #toctitle > a.anchor:before, .sidebarblock > .content > .title > a.anchor:before, h4 > a.anchor:before, h5 > a.anchor:before, h6 > a.anchor:before { content: "\00A7"; font-size: 0.85em; display: block; padding-top: 0.1em; }
#content h1:hover > a.anchor, #content h1 > a.anchor:hover, h2:hover > a.anchor, h2 > a.anchor:hover, h3:hover > a.anchor, #toctitle:hover > a.anchor, .sidebarblock > .content > .title:hover > a.anchor, h3 > a.anchor:hover, #toctitle > a.anchor:hover, .sidebarblock > .content > .title > a.anchor:hover, h4:hover > a.anchor, h4 > a.anchor:hover, h5:hover > a.anchor, h5 > a.anchor:hover, h6:hover > a.anchor, h6 > a.anchor:hover { visibility: visible; }
#content h1 > a.link, h2 > a.link, h3 > a.link, #toctitle > a.link, .sidebarblock > .content > .title > a.link, h4 > a.link, h5 > a.link, h6 > a.link { color: black; text-decoration: none; }
#content h1 > a.link:hover, h2 > a.link:hover, h3 > a.link:hover, #toctitle > a.link:hover, .sidebarblock > .content > .title > a.link:hover, h4 > a.link:hover, h5 > a.link:hover, h6 > a.link:hover { color: black; }
.audioblock, .imageblock, .literalblock, .listingblock, .stemblock, .videoblock { margin-bottom: 1.25em; }
.admonitionblock td.content > .title, .audioblock > .title, .exampleblock > .title, .imageblock > .title, .listingblock > .title, .literalblock > .title, .stemblock > .title, .openblock > .title, .paragraph > .title, .quoteblock > .title, table.tableblock > .title, .verseblock > .title, .videoblock > .title, .dlist > .title, .olist > .title, .ulist > .title, .qlist > .title, .hdlist > .title { text-rendering: optimizeLegibility; text-align: left; }
table.tableblock > caption.title { white-space: nowrap; overflow: visible; max-width: 0; }
.paragraph.lead > p, #preamble > .sectionbody > .paragraph:first-of-type p { color: black; }
table.tableblock #preamble > .sectionbody > .paragraph:first-of-type p { font-size: inherit; }
.admonitionblock > table { border-collapse: separate; border: 0; background: none; width: 100%; }
.admonitionblock > table td.icon { text-align: center; width: 80px; }
.admonitionblock > table td.icon img { max-width: initial; }
.admonitionblock > table td.icon .title { font-weight: bold; font-family: Noto, sans-serif; text-transform: uppercase; }
.admonitionblock > table td.content { padding-left: 1.125em; padding-right: 1.25em; border-left: 1px solid #ddd; color: #365E7A; }
.admonitionblock > table td.content > :last-child > :last-child { margin-bottom: 0; }
.exampleblock > .content { border-style: solid; border-width: 1px; border-color: #e6e6e6; margin-bottom: 1.25em; padding: 1.25em; background: #fff; -webkit-border-radius: 0; border-radius: 0; }
.exampleblock > .content > :first-child { margin-top: 0; }
.exampleblock > .content > :last-child { margin-bottom: 0; }
.sidebarblock { border-style: solid; border-width: 1px; border-color: #e6e6e6; margin-bottom: 1.25em; padding: 1.25em; background: #fff; -webkit-border-radius: 0; border-radius: 0; }
.sidebarblock > :first-child { margin-top: 0; }
.sidebarblock > :last-child { margin-bottom: 0; }
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<body class="manpage">
<div id="header">
<h1>clSetKernelArg(3) Manual Page</h1>
<h2 id="_name">Name</h2>
<div class="sectionbody">
<p>clSetKernelArg - Set the argument value for a specific argument of a kernel.</p>
</div>
</div>
<div id="content">
<div class="sect1">
<h2 id="_c_specification"><a class="anchor" href="#_c_specification"></a>C Specification</h2>
<div class="sectionbody">
<div class="paragraph">
<p>To set the argument value for a specific argument of a kernel, call the
function</p>
</div>
<div id="clSetKernelArg" class="listingblock">
<div class="content">
<pre class="highlight"><code class="language-opencl" data-lang="opencl">// Provided by CL_VERSION_1_0
cl_int clSetKernelArg(
cl_kernel kernel,
cl_uint arg_index,
size_t arg_size,
const void* arg_value);</code></pre>
</div>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_parameters"><a class="anchor" href="#_parameters"></a>Parameters</h2>
<div class="sectionbody">
<div class="ulist">
<ul>
<li>
<p><em>kernel</em> is a valid kernel object.</p>
</li>
<li>
<p><em>arg_index</em> is the kernel argument index.
Kernel arguments are referred to by indices that go from zero to
<em>n - 1</em>, where <em>n</em> is the total number of arguments declared by the kernel.</p>
</li>
<li>
<p><em>arg_size</em> specifies the size of the kernel argument value.</p>
</li>
<li>
<p><em>arg_value</em> is a pointer to the data for the kernel argument.
The argument data pointed to by <em>arg_value</em> is copied and the <em>arg_value</em>
pointer can therefore be reused by the application after <strong>clSetKernelArg</strong>
returns.
The argument data is used by all API calls that enqueue the kernel until the
argument is changed by another call to <strong>clSetKernelArg</strong> for the kernel.</p>
</li>
</ul>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_description"><a class="anchor" href="#_description"></a>Description</h2>
<div class="sectionbody">
<div class="paragraph">
<p>If the kernel argument being set is a pointer to the <code>global</code> or <code>constant</code>
address space, then <em>arg_value</em> must point to a buffer memory object or <code>NULL</code>,
or <em>arg_value</em> must be <code>NULL</code>.
If <em>arg_value</em> is <code>NULL</code> or points to <code>NULL</code>, then the kernel argument will be
set to <code>NULL</code>.</p>
</div>
<div class="paragraph">
<p>If the kernel argument being set is a pointer to the <code>local</code> address space, then
<em>arg_value</em> must be <code>NULL</code>, and <em>arg_size</em> specifies the amount of local memory
in bytes that are allocated for the kernel argument.
Prior to OpenCL 3.1, <em>arg_size</em> must be greater than zero.
For OpenCL 3.1 and newer, <em>arg_size</em> may be zero, indicating that no local
memory is required for the kernel argument. <sup class="footnote">[<a id="_footnoteref_1" class="footnote" href="#_footnotedef_1" title="View footnote.">1</a>]</sup></p>
</div>
<div class="paragraph">
<p>If the kernel argument being set is an image object, then <em>arg_value</em> must point
to an image memory object.
Additionally:</p>
</div>
<div class="ulist">
<ul>
<li>
<p>If the kernel argument is a 1D image, then the image memory object must be of
image type <code>CL_MEM_<wbr>OBJECT_<wbr>IMAGE1D</code>.</p>
</li>
<li>
<p>If the kernel argument is a 2D image, then the image memory object must be of
image type <code>CL_MEM_<wbr>OBJECT_<wbr>IMAGE2D</code>.</p>
</li>
<li>
<p>If the kernel argument is a 3D image, then the image memory object must be of
image type <code>CL_MEM_<wbr>OBJECT_<wbr>IMAGE3D</code>.</p>
</li>
<li>
<p>If the kernel argument is a 1D image buffer, then the image memory object must
be of image type <code>CL_MEM_<wbr>OBJECT_<wbr>IMAGE1D_<wbr>BUFFER</code>.</p>
</li>
<li>
<p>If the kernel argument is a 1D image array, then the image memory object must
be of image type <code>CL_MEM_<wbr>OBJECT_<wbr>IMAGE1D_<wbr>ARRAY</code>.</p>
</li>
<li>
<p>If the kernel argument is a 2D image array, then the image memory object must
be of image type <code>CL_MEM_<wbr>OBJECT_<wbr>IMAGE2D_<wbr>ARRAY</code>.</p>
</li>
<li>
<p>If the kernel argument is a 2D depth image, then the image memory object must
be of image type <code>CL_MEM_<wbr>OBJECT_<wbr>IMAGE2D</code> and image channel order <code>CL_DEPTH</code>.</p>
</li>
<li>
<p>If the kernel argument is a 2D depth image array, then the image memory object
must be of image type <code>CL_MEM_<wbr>OBJECT_<wbr>IMAGE2D_<wbr>ARRAY</code> and image channel order
<code>CL_DEPTH</code>.</p>
</li>
<li>
<p>If the kernel argument is a 2D MSAA image, then the image memory object must
be of image type <code>CL_MEM_<wbr>OBJECT_<wbr>IMAGE2D</code>.</p>
</li>
<li>
<p>If the kernel argument is a 2D MSAA image array, then the image memory object
must be of image type <code>CL_MEM_<wbr>OBJECT_<wbr>IMAGE2D_<wbr>ARRAY</code>.</p>
</li>
<li>
<p>If the kernel argument is a 2D MSAA depth image, then the image memory object
must be of image type <code>CL_MEM_<wbr>OBJECT_<wbr>IMAGE2D</code> and image channel order
<code>CL_DEPTH</code>.</p>
</li>
<li>
<p>If the kernel argument is a 2D MSAA depth image array, then the image memory
object must be of image type <code>CL_MEM_<wbr>OBJECT_<wbr>IMAGE2D_<wbr>ARRAY</code> and image channel
order <code>CL_DEPTH</code>.</p>
</li>
</ul>
</div>
<div class="paragraph">
<p>Behavior is undefined if the same image memory object is passed as both a
<code>read_only</code> image and a <code>write_only</code> image, or as a <code>read_write</code> image and
either a <code>read_only</code> image or a <code>write_only</code> image.</p>
</div>
<div class="paragraph">
<p>If the kernel argument being set is a sampler, then <em>arg_value</em> must point to a
sampler object.</p>
</div>
<div class="paragraph">
<p>If the kernel argument being set is a device queue, then <em>arg_value</em> must point
to a device queue object.</p>
</div>
<div class="paragraph">
<p>If the kernel argument being set is a pipe, then <em>arg_value</em> must point to a
pipe memory object.</p>
</div>
<div class="paragraph">
<p>For all other kernel arguments, <em>arg_value</em> points to the data that is used as
the kernel argument value.</p>
</div>
<div class="paragraph">
<p>All OpenCL objects set as kernel arguments must be created from the same context
as the kernel object.</p>
</div>
<div class="admonitionblock note">
<table>
<tr>
<td class="icon">
<i class="fa icon-note" title="Note"></i>
</td>
<td class="content">
<div class="paragraph">
<p>A kernel object does not update the reference count for objects such as
memory or sampler objects specified as argument values by <strong>clSetKernelArg</strong>.
Users may not rely on a kernel object to retain objects specified as
argument values to the kernel.</p>
</div>
<div class="paragraph">
<p>Implementations shall not allow <code>cl_kernel</code> objects to hold reference
counts to <code>cl_kernel</code> arguments, because no mechanism is provided for the
user to tell the kernel to release that ownership right.
If the kernel holds ownership rights on kernel args, that would make it
impossible for users to tell with certainty when they may safely
release user allocated resources associated with OpenCL objects such as
the <code>cl_mem</code> backing store used with <code>CL_MEM_<wbr>USE_<wbr>HOST_<wbr>PTR</code>.</p>
</div>
</td>
</tr>
</table>
</div>
<div class="paragraph">
<p><strong>clSetKernelArg</strong> returns <code>CL_SUCCESS</code> if the function is executed successfully.
Otherwise, it returns one of the following errors:</p>
</div>
<div class="ulist">
<ul>
<li>
<p><code>CL_INVALID_<wbr>KERNEL</code></p>
<div class="ulist">
<ul>
<li>
<p>if <em>kernel</em> is not a valid kernel</p>
</li>
</ul>
</div>
</li>
<li>
<p><code>CL_INVALID_<wbr>ARG_<wbr>INDEX</code></p>
<div class="ulist">
<ul>
<li>
<p>if <em>arg_index</em> is not a valid argument index</p>
</li>
</ul>
</div>
</li>
<li>
<p><code>CL_INVALID_<wbr>CONTEXT</code></p>
<div class="ulist">
<ul>
<li>
<p>if the context associated with <em>kernel</em> and an OpenCL object pointed to
by <em>arg_value</em> are not the same</p>
</li>
</ul>
</div>
</li>
<li>
<p><code>CL_INVALID_<wbr>MEM_<wbr>OBJECT</code></p>
<div class="ulist">
<ul>
<li>
<p>if <em>arg_value</em> is <code>NULL</code> and it must point to a valid memory object</p>
</li>
<li>
<p>if <em>arg_value</em> points to <code>NULL</code> and it must point to a valid memory object</p>
</li>
<li>
<p>if <em>arg_value</em> is not <code>NULL</code>, and does not point to <code>NULL</code>, and does not
point to a valid memory object</p>
</li>
<li>
<p>if <em>arg_value</em> points to a valid memory object, but the memory object is
not valid for the kernel argument specified by <em>arg_index</em></p>
</li>
</ul>
</div>
</li>
<li>
<p><code>CL_INVALID_<wbr>SAMPLER</code></p>
<div class="ulist">
<ul>
<li>
<p>if the kernel argument is a sampler, but <em>arg_value</em> does not point to a
valid sampler object</p>
</li>
</ul>
</div>
</li>
<li>
<p><code>CL_INVALID_<wbr>DEVICE_<wbr>QUEUE</code></p>
<div class="ulist">
<ul>
<li>
<p>if the kernel argument is a device queue, but <em>arg_value</em> does not point
to a valid device queue object.
This error code is <a href="https://www.khronos.org/registry/OpenCL/specs/3.0-unified/html/OpenCL_API.html#unified-spec" target="_blank" rel="noopener">missing before</a> version 2.0.</p>
</li>
</ul>
</div>
</li>
<li>
<p><code>CL_INVALID_<wbr>ARG_<wbr>SIZE</code></p>
<div class="ulist">
<ul>
<li>
<p>if <em>arg_value</em> points to a memory object and <em>arg_size</em> is not equal to
<code>sizeof(<code>cl_mem</code>)</code></p>
</li>
<li>
<p>if <em>arg_value</em> points to a sampler object and <em>arg_size</em> is not equal to
<code>sizeof(<code>cl_sampler</code>)</code></p>
</li>
<li>
<p>if <em>arg_value</em> points to a device queue object and <em>arg_size</em> is not
equal to <code>sizeof(<code>cl_command_<wbr>queue</code>)</code></p>
</li>
<li>
<p>if the kernel argument is a pointer to the <code>local</code> address space and
<em>arg_size</em> is zero.
This error condition does not apply if the platform associated with <em>kernel</em>
is OpenCL 3.1 or newer.</p>
</li>
<li>
<p>if <em>arg_value</em> points to the data to be used as the kernel argument value
and <em>arg_size</em> does not match the size of the data type for the argument</p>
</li>
</ul>
</div>
</li>
<li>
<p><code>CL_INVALID_<wbr>ARG_<wbr>VALUE</code></p>
<div class="ulist">
<ul>
<li>
<p>if the argument is an image declared with the <code>read_only</code> qualifier and
<em>arg_value</em> points to an image object created with the memory flag
<code>CL_MEM_<wbr>WRITE_<wbr>ONLY</code></p>
</li>
<li>
<p>if the argument is an image declared with the <code>write_only</code> qualifier and
<em>arg_value</em> points to an image object created with the memory flag
<code>CL_MEM_<wbr>READ_<wbr>ONLY</code>
or <code>CL_MEM_<wbr>IMMUTABLE_<wbr>EXT</code></p>
</li>
</ul>
</div>
</li>
<li>
<p><code>CL_MAX_<wbr>SIZE_<wbr>RESTRICTION_<wbr>EXCEEDED</code></p>
<div class="ulist">
<ul>
<li>
<p>if the size in bytes of the memory object (if the argument is a memory
object) or <em>arg_size</em> (if the argument is declared with <code>local</code> qualifier)
exceeds a language-specified maximum size restriction for this argument,
such as the <strong>MaxByteOffset</strong> SPIR-V decoration.
This error code is <a href="https://www.khronos.org/registry/OpenCL/specs/3.0-unified/html/OpenCL_API.html#unified-spec" target="_blank" rel="noopener">missing before</a> version 2.2.</p>
</li>
</ul>
</div>
</li>
<li>
<p><code>CL_OUT_<wbr>OF_<wbr>RESOURCES</code></p>
<div class="ulist">
<ul>
<li>
<p>if there is a failure to allocate resources required by the OpenCL
implementation on the device</p>
</li>
</ul>
</div>
</li>
<li>
<p><code>CL_OUT_<wbr>OF_<wbr>HOST_<wbr>MEMORY</code></p>
<div class="ulist">
<ul>
<li>
<p>if there is a failure to allocate resources required by the OpenCL
implementation on the host</p>
</li>
</ul>
</div>
</li>
</ul>
</div>
<div class="paragraph">
<p>When <strong>clSetKernelArg</strong> returns an error code different from <code>CL_SUCCESS</code>, the
internal state of <em>kernel</em> may only be modified when that error code is
<code>CL_OUT_<wbr>OF_<wbr>RESOURCES</code> or <code>CL_OUT_<wbr>OF_<wbr>HOST_<wbr>MEMORY</code>. When the internal state
of <em>kernel</em> is modified, it is implementation-defined whether:</p>
</div>
<div class="ulist">
<ul>
<li>
<p>The argument value that was previously set is kept so that it can be used in
further kernel enqueues.</p>
</li>
<li>
<p>The argument value is unset such that a subsequent kernel enqueue fails with
<code>CL_INVALID_<wbr>KERNEL_<wbr>ARGS</code>. <sup class="footnote">[<a id="_footnoteref_2" class="footnote" href="#_footnotedef_2" title="View footnote.">2</a>]</sup></p>
</li>
</ul>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_see_also"><a class="anchor" href="#_see_also"></a>See Also</h2>
<div class="sectionbody">
<div class="paragraph">
<p><a href="CL_VERSION_1_0.html">CL_VERSION_1_0</a>, <a href="cl_kernel.html">cl_kernel</a>, <a href="cl_uint.html">cl_uint</a></p>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_document_notes"><a class="anchor" href="#_document_notes"></a>Document Notes</h2>
<div class="sectionbody">
<div class="paragraph">
<p>For more information, see the <a href="https://www.khronos.org/registry/OpenCL/specs/3.0-unified/html/OpenCL_API.html#clSetKernelArg" target="_blank" rel="noopener">OpenCL Specification</a></p>
</div>
<div class="paragraph">
<p>This page is extracted from the OpenCL Specification.
Fixes and changes should be made to the Specification, not directly.</p>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_copyright"><a class="anchor" href="#_copyright"></a>Copyright</h2>
<div class="sectionbody">
<div class="paragraph">
<p>Copyright 2014-2026 The Khronos Group Inc.</p>
</div>
<div class="paragraph">
<p>SPDX-License-Identifier: CC-BY-4.0</p>
</div>
</div>
</div>
</div>
<div id="footnotes">
<hr>
<div class="footnote" id="_footnotedef_1">
<a href="#_footnoteref_1">1</a>. When the size of a <code>local</code> argument is set to zero, the value of the pointer within the kernel is implementation-defined.
</div>
<div class="footnote" id="_footnotedef_2">
<a href="#_footnoteref_2">2</a>. Implementations are encouraged to favor this option as it makes it more likely that errors will be managed by applications.
</div>
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