| <!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 2.0.16"> |
| <title>clCreateImage(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; } |
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| |
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| |
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| .sidebarblock > :first-child { margin-top: 0; } |
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| |
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| |
| .literalblock.output pre { color: #eee; background-color: #264357; } |
| |
| .listingblock pre.highlightjs { padding: 0; } |
| .listingblock pre.highlightjs > code { padding: 1.25em 1.5625em 1.125em 1.5625em; -webkit-border-radius: 0; border-radius: 0; } |
| |
| .listingblock > .content { position: relative; } |
| |
| .listingblock code[data-lang]:before { display: none; content: attr(data-lang); position: absolute; font-size: 0.75em; top: 0.425rem; right: 0.5rem; line-height: 1; text-transform: uppercase; color: #999; } |
| |
| .listingblock:hover code[data-lang]:before { display: block; } |
| |
| .listingblock.terminal pre .command:before { content: attr(data-prompt); padding-right: 0.5em; color: #999; } |
| |
| .listingblock.terminal pre .command:not([data-prompt]):before { content: "$"; } |
| |
| table.pyhltable { border-collapse: separate; border: 0; margin-bottom: 0; background: none; } |
| |
| table.pyhltable td { vertical-align: top; padding-top: 0; padding-bottom: 0; line-height: 1.6; } |
| |
| table.pyhltable td.code { padding-left: .75em; padding-right: 0; } |
| |
| pre.pygments .lineno, table.pyhltable td:not(.code) { color: #999; padding-left: 0; padding-right: .5em; border-right: 1px solid #ddd; } |
| |
| pre.pygments .lineno { display: inline-block; margin-right: .25em; } |
| |
| table.pyhltable .linenodiv { background: none !important; padding-right: 0 !important; } |
| |
| .quoteblock { margin: 0 1em 0.75em 1.5em; display: table; } |
| .quoteblock > .title { margin-left: -1.5em; margin-bottom: 0.75em; } |
| .quoteblock blockquote, .quoteblock blockquote p { color: #333; font-size: 1.15rem; line-height: 1.75; word-spacing: 0.1em; letter-spacing: 0; font-style: italic; text-align: justify; } |
| .quoteblock blockquote { margin: 0; padding: 0; border: 0; } |
| .quoteblock blockquote:before { content: "\201c"; float: left; font-size: 2.75em; font-weight: bold; line-height: 0.6em; margin-left: -0.6em; color: black; text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1); } |
| .quoteblock blockquote > .paragraph:last-child p { margin-bottom: 0; } |
| .quoteblock .attribution { margin-top: 0.5em; margin-right: 0.5ex; text-align: right; } |
| .quoteblock .quoteblock { margin-left: 0; margin-right: 0; padding: 0.5em 0; border-left: 3px solid #365E7A; } |
| .quoteblock .quoteblock blockquote { padding: 0 0 0 0.75em; } |
| .quoteblock .quoteblock blockquote:before { display: none; } |
| |
| .verseblock { margin: 0 1em 0.75em 1em; } |
| .verseblock pre { font-family: "Open Sans", "DejaVu Sans", sans; font-size: 1.15rem; color: #333; font-weight: 300; text-rendering: optimizeLegibility; } |
| .verseblock pre strong { font-weight: 400; } |
| .verseblock .attribution { margin-top: 1.25rem; margin-left: 0.5ex; } |
| |
| .quoteblock .attribution, .verseblock .attribution { font-size: 0.8125em; line-height: 1.45; font-style: italic; } |
| .quoteblock .attribution br, .verseblock .attribution br { display: none; } |
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| |
| .quoteblock.abstract { margin: 0 0 0.75em 0; display: block; } |
| .quoteblock.abstract blockquote, .quoteblock.abstract blockquote p { text-align: left; word-spacing: 0; } |
| .quoteblock.abstract blockquote:before, .quoteblock.abstract blockquote p:first-of-type:before { display: none; } |
| |
| table.tableblock { max-width: 100%; border-collapse: separate; } |
| table.tableblock td > .paragraph:last-child p > p:last-child, table.tableblock th > p:last-child, table.tableblock td > p:last-child { margin-bottom: 0; } |
| |
| table.tableblock, th.tableblock, td.tableblock { border: 0 solid #d8d8ce; } |
| |
| table.grid-all > thead > tr > .tableblock, table.grid-all > tbody > tr > .tableblock { border-width: 0 1px 1px 0; } |
| |
| table.grid-all > tfoot > tr > .tableblock { border-width: 1px 1px 0 0; } |
| |
| table.grid-cols > * > tr > .tableblock { border-width: 0 1px 0 0; } |
| |
| table.grid-rows > thead > tr > .tableblock, table.grid-rows > tbody > tr > .tableblock { border-width: 0 0 1px 0; } |
| |
| table.grid-rows > tfoot > tr > .tableblock { border-width: 1px 0 0 0; } |
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| |
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| |
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| table.frame-topbot { border-width: 1px 0; } |
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| th.halign-left, td.halign-left { text-align: left; } |
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| th.halign-right, td.halign-right { text-align: right; } |
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| th.halign-center, td.halign-center { text-align: center; } |
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| |
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| |
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| |
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| |
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| |
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| |
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| |
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| |
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| |
| ol.upperroman { list-style-type: upper-roman; } |
| |
| ol.lowergreek { list-style-type: lower-greek; } |
| |
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| |
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| |
| td.hdlist1 { font-weight: bold; padding-bottom: 0.75em; } |
| |
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| |
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| .imageblock.thumb, .imageblock.th { border-width: 6px; } |
| .imageblock.thumb > .title, .imageblock.th > .title { padding: 0 0.125em; } |
| |
| .image.left, .image.right { margin-top: 0.25em; margin-bottom: 0.25em; display: inline-block; line-height: 0; } |
| .image.left { margin-right: 0.625em; } |
| .image.right { margin-left: 0.625em; } |
| |
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| a.image object { pointer-events: none; } |
| |
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| |
| #footnotes { padding-top: 0.75em; padding-bottom: 0.75em; margin-bottom: 0.625em; } |
| #footnotes hr { width: 20%; min-width: 6.25em; margin: -0.25em 0 0.75em 0; border-width: 1px 0 0 0; } |
| #footnotes .footnote { padding: 0 0.375em 0 0.225em; line-height: 1.3334; font-size: 0.875em; margin-left: 1.2em; margin-bottom: 0.2em; } |
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| #footnotes .footnote:last-of-type { margin-bottom: 0; } |
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| |
| .gist .file-data > table { border: 0; background: #fff; width: 100%; margin-bottom: 0; } |
| .gist .file-data > table td.line-data { width: 99%; } |
| |
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| |
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| |
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| |
| .underline { text-decoration: underline; } |
| |
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| |
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| |
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| |
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| |
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| |
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| |
| .blue { color: #0000bf; } |
| |
| .blue-background { background-color: #0000fa; } |
| |
| .fuchsia { color: #bf00bf; } |
| |
| .fuchsia-background { background-color: #fa00fa; } |
| |
| .gray { color: #606060; } |
| |
| .gray-background { background-color: #7d7d7d; } |
| |
| .green { color: #006000; } |
| |
| .green-background { background-color: #007d00; } |
| |
| .lime { color: #00bf00; } |
| |
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| |
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| |
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| |
| .olive { color: #606000; } |
| |
| .olive-background { background-color: #7d7d00; } |
| |
| .purple { color: #600060; } |
| |
| .purple-background { background-color: #7d007d; } |
| |
| .red { color: #bf0000; } |
| |
| .red-background { background-color: #fa0000; } |
| |
| .silver { color: #909090; } |
| |
| .silver-background { background-color: #bcbcbc; } |
| |
| .teal { color: #006060; } |
| |
| .teal-background { background-color: #007d7d; } |
| |
| .white { color: #bfbfbf; } |
| |
| .white-background { background-color: #fafafa; } |
| |
| .yellow { color: #bfbf00; } |
| |
| .yellow-background { background-color: #fafa00; } |
| |
| span.icon > .fa { cursor: default; } |
| a span.icon > .fa { cursor: inherit; } |
| |
| .admonitionblock td.icon [class^="fa icon-"] { font-size: 2.5em; text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5); cursor: default; } |
| .admonitionblock td.icon .icon-note:before { content: "\f05a"; color: #29475c; } |
| .admonitionblock td.icon .icon-tip:before { content: "\f0eb"; text-shadow: 1px 1px 2px rgba(155, 155, 0, 0.8); color: #111; } |
| .admonitionblock td.icon .icon-warning:before { content: "\f071"; color: #bf6900; } |
| .admonitionblock td.icon .icon-caution:before { content: "\f06d"; color: #bf3400; } |
| .admonitionblock td.icon .icon-important:before { content: "\f06a"; color: #bf0000; } |
| |
| .conum[data-value] { display: inline-block; color: #fff !important; background-color: black; -webkit-border-radius: 100px; border-radius: 100px; text-align: center; font-size: 0.75em; width: 1.67em; height: 1.67em; line-height: 1.67em; font-family: "Open Sans", "DejaVu Sans", sans-serif; font-style: normal; font-weight: bold; } |
| .conum[data-value] * { color: #fff !important; } |
| .conum[data-value] + b { display: none; } |
| .conum[data-value]:after { content: attr(data-value); } |
| pre .conum[data-value] { position: relative; top: -0.125em; } |
| |
| b.conum * { color: inherit !important; } |
| |
| .conum:not([data-value]):empty { display: none; } |
| |
| h1, h2, h3, #toctitle, .sidebarblock > .content > .title, h4, h5, h6 { border-bottom: 1px solid #ddd; } |
| |
| .sect1 { padding-bottom: 0; } |
| |
| #toctitle { color: #00406F; font-weight: normal; margin-top: 1.5em; } |
| |
| .sidebarblock { border-color: #aaa; } |
| |
| code { -webkit-border-radius: 4px; border-radius: 4px; } |
| |
| p.tableblock.header { color: #6d6e71; } |
| |
| .literalblock pre, .listingblock pre { background: #eee; } |
| |
| /* From https://github.com/KhronosGroup/Vulkan-Docs/pull/901 */ |
| a code { color: inherit; } |
| |
| /* From https://github.com/KhronosGroup/Vulkan-Docs/pull/1157 */ |
| /* Make VUID anchor handles*/ |
| li > p > a[id^="VUID-"] { visibility: hidden; position: absolute; z-index: 1001; width: 2.2ex; margin-left: -2.2ex; display: block; text-decoration: none !important; text-align: center; font-weight: normal; } |
| |
| li > p > a[id^="VUID-"]:before { content: "\00A7"; font-size: 1em; display: block; padding-top: 0em; background: #fff; } |
| |
| li > p:hover > a[id^="VUID-"], li > p > a[id^="VUID-"]:hover { visibility: visible; } |
| |
| li > p > a[id^="VUID-"].link { color: black; text-decoration: none; } |
| |
| /* TODO: not quite sure what these two do */ |
| li > p > a[id^="VUID-"].link:hover { color: black; } |
| |
| .vuid { color: #4d4d4d; font-family: monospace; } |
| |
| </style> |
| <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css"> |
| <link rel="stylesheet" href="../../katex/katex.min.css"> |
| <script src="../../katex/katex.min.js"></script> |
| <script src="../../katex/contrib/auto-render.min.js"></script> |
| <!-- Use KaTeX to render math once document is loaded, see |
| https://github.com/Khan/KaTeX/tree/master/contrib/auto-render --> |
| <script> |
| document.addEventListener("DOMContentLoaded", function () { |
| renderMathInElement( |
| document.body, |
| { |
| delimiters: [ |
| { left: "$$", right: "$$", display: true}, |
| { left: "\\[", right: "\\]", display: true}, |
| { left: "$", right: "$", display: false}, |
| { left: "\\(", right: "\\)", display: false} |
| ] |
| } |
| ); |
| }); |
| </script></head> |
| <body class="manpage"> |
| <div id="header"> |
| <h1>clCreateImage(3) Manual Page</h1> |
| <h2 id="_name">Name</h2> |
| <div class="sectionbody"> |
| <p>clCreateImage - Creates a 1D image, 1D image buffer, 1D image array, 2D image, 2D image array or 3D image object.</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>An <strong>image object</strong> may be created using the function</p> |
| </div> |
| <div id="clCreateImage" class="listingblock"> |
| <div class="content"> |
| <pre class="highlight"><code class="language-opencl" data-lang="opencl">// Provided by CL_VERSION_1_2 |
| cl_mem clCreateImage( |
| cl_context context, |
| cl_mem_flags flags, |
| const cl_image_format* image_format, |
| const cl_image_desc* image_desc, |
| void* host_ptr, |
| cl_int* errcode_ret);</code></pre> |
| </div> |
| </div> |
| <div class="admonitionblock important"> |
| <table> |
| <tr> |
| <td class="icon"> |
| <i class="fa icon-important" title="Important"></i> |
| </td> |
| <td class="content"> |
| <strong>clCreateImage</strong> 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 1.2. |
| </td> |
| </tr> |
| </table> |
| </div> |
| <div class="paragraph"> |
| <p>An <strong>image object</strong> may also be created with additional properties using the function</p> |
| </div> |
| <div id="clCreateImageWithProperties" class="listingblock"> |
| <div class="content"> |
| <pre class="highlight"><code class="language-opencl" data-lang="opencl">// Provided by CL_VERSION_3_0 |
| cl_mem clCreateImageWithProperties( |
| cl_context context, |
| const cl_mem_properties* properties, |
| cl_mem_flags flags, |
| const cl_image_format* image_format, |
| const cl_image_desc* image_desc, |
| void* host_ptr, |
| cl_int* errcode_ret);</code></pre> |
| </div> |
| </div> |
| <div class="admonitionblock important"> |
| <table> |
| <tr> |
| <td class="icon"> |
| <i class="fa icon-important" title="Important"></i> |
| </td> |
| <td class="content"> |
| <strong>clCreateImageWithProperties</strong> 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 3.0. |
| </td> |
| </tr> |
| </table> |
| </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>context</em> is a valid OpenCL context used to create the image object.</p> |
| </li> |
| <li> |
| <p><em>properties</em> is an optional list of properties for the image object and their corresponding values. |
| The list is terminated with the special property <code>0</code>. |
| If no properties are required, <em>properties</em> may be <code>NULL</code>. |
| OpenCL 3.0 does not define any optional properties for images, |
| but extensions may define properties as described in the |
| <a href="https://www.khronos.org/registry/OpenCL/specs/3.0-unified/html/OpenCL_API.html#external-image-memory-properties-table" class="bare" target="_blank" rel="noopener">https://www.khronos.org/registry/OpenCL/specs/3.0-unified/html/OpenCL_API.html#external-image-memory-properties-table</a>.</p> |
| </li> |
| <li> |
| <p><em>flags</em> is a bit-field that is used to specify allocation and usage |
| information about the image memory object being created and is described in |
| the <a href="https://www.khronos.org/registry/OpenCL/specs/3.0-unified/html/OpenCL_API.html#memory-flags-table" target="_blank" rel="noopener">supported memory flag values</a> table.</p> |
| </li> |
| <li> |
| <p><em>image_format</em> is a pointer to a structure that describes format properties |
| of the image to be allocated. |
| A 1D image buffer or 2D image can be created from a buffer by specifying a |
| buffer object in the <em>image_desc</em>→<em>mem_object</em>. |
| A 2D image can be created from another 2D image object by specifying an |
| image object in the <em>image_desc</em>→<em>mem_object</em>. |
| Refer to the <a href="https://www.khronos.org/registry/OpenCL/specs/3.0-unified/html/OpenCL_API.html#image-format-descriptor" target="_blank" rel="noopener">Image Format Descriptor</a> section |
| for a detailed description of the image format descriptor.</p> |
| </li> |
| <li> |
| <p><em>image_desc</em> is a pointer to a structure that describes type and dimensions |
| of the image to be allocated. |
| Refer to the <a href="https://www.khronos.org/registry/OpenCL/specs/3.0-unified/html/OpenCL_API.html#image-descriptor" target="_blank" rel="noopener">Image Descriptor</a> section for a detailed |
| description of the image descriptor.</p> |
| </li> |
| <li> |
| <p><em>host_ptr</em> is a pointer to the image data that may already be allocated by |
| the application. |
| Refer to the <a href="https://www.khronos.org/registry/OpenCL/specs/3.0-unified/html/OpenCL_API.html#host-ptr-buffer-size-table" target="_blank" rel="noopener">table below</a> for a description |
| of how large the buffer that <em>host_ptr</em> points to must be.</p> |
| </li> |
| <li> |
| <p><em>errcode_ret</em> will return an appropriate error code. |
| If <em>errcode_ret</em> is <code>NULL</code>, no error code is returned.</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>The alignment requirements for data stored in image objects are described |
| in <a href="https://www.khronos.org/registry/OpenCL/specs/3.0-unified/html/OpenCL_API.html#alignment-app-data-types" target="_blank" rel="noopener">Alignment of Application Data Types</a>.</p> |
| </div> |
| <div class="paragraph"> |
| <p>For all image types except <code>CL_MEM_<wbr>OBJECT_<wbr>IMAGE1D_<wbr>BUFFER</code>, if the value |
| specified for <em>flags</em> is 0, the default is used which is <code>CL_MEM_<wbr>READ_<wbr>WRITE</code>.</p> |
| </div> |
| <div class="paragraph"> |
| <p>For <code>CL_MEM_<wbr>OBJECT_<wbr>IMAGE1D_<wbr>BUFFER</code> image type, or an image created from |
| another memory object (image or buffer), if the <code>CL_MEM_<wbr>READ_<wbr>WRITE</code>, |
| <code>CL_MEM_<wbr>READ_<wbr>ONLY</code> or <code>CL_MEM_<wbr>WRITE_<wbr>ONLY</code> values are not specified in <em>flags</em>, |
| they are inherited from the corresponding memory access qualifiers associated |
| with <em>mem_object</em>. |
| The <code>CL_MEM_<wbr>USE_<wbr>HOST_<wbr>PTR</code>, <code>CL_MEM_<wbr>ALLOC_<wbr>HOST_<wbr>PTR</code> and <code>CL_MEM_<wbr>COPY_<wbr>HOST_<wbr>PTR</code> |
| values cannot be specified in <em>flags</em> but are inherited from the |
| corresponding memory access qualifiers associated with <em>mem_object</em>. |
| If <code>CL_MEM_<wbr>COPY_<wbr>HOST_<wbr>PTR</code> is specified in the memory access qualifier values |
| associated with <em>mem_object</em> it does not imply any additional copies when |
| the image is created from <em>mem_object</em>. |
| If the <code>CL_MEM_<wbr>HOST_<wbr>WRITE_<wbr>ONLY</code>, <code>CL_MEM_<wbr>HOST_<wbr>READ_<wbr>ONLY</code> or |
| <code>CL_MEM_<wbr>HOST_<wbr>NO_<wbr>ACCESS</code> values are not specified in <em>flags</em>, they are |
| inherited from the corresponding memory access qualifiers associated with |
| <em>mem_object</em>.</p> |
| </div> |
| <div class="paragraph"> |
| <p><strong>Mipmap Images</strong></p> |
| </div> |
| <div class="paragraph"> |
| <p>A mipmapped 1D image, 1D image array, 2D image, 2D image array or 3D image |
| is created by specifying <em>num_mip_levels</em> to be a value greater than one in |
| <em>image_desc</em>. |
| The dimensions of a mipmapped image can be a power of two or a non-power of |
| two. |
| Each successively smaller mipmap level is half the size of the previous |
| level, rounded down to the nearest integer.</p> |
| </div> |
| <div class="paragraph"> |
| <p>The following restrictions apply when mipmapped images are created with |
| <strong>clCreateImage</strong>:</p> |
| </div> |
| <div class="ulist"> |
| <ul> |
| <li> |
| <p><code>CL_MEM_<wbr>USE_<wbr>HOST_<wbr>PTR</code> or <code>CL_MEM_<wbr>COPY_<wbr>HOST_<wbr>PTR</code> cannot be specified if a |
| mipmapped image is created.</p> |
| </li> |
| <li> |
| <p>The <em>host_ptr</em> argument to <strong>clCreateImage</strong> must be a <code>NULL</code> value.</p> |
| </li> |
| <li> |
| <p>Mip-mapped images cannot be created for <code>CL_MEM_<wbr>OBJECT_<wbr>IMAGE1D_<wbr>BUFFER</code> |
| images, depth images or multi-sampled (i.e. msaa) images.</p> |
| </li> |
| </ul> |
| </div> |
| <div class="paragraph"> |
| <p><strong>Image Data in Host Memory</strong></p> |
| </div> |
| <div class="paragraph"> |
| <p>For a 3D image or 2D image array, the image data specified by <em>host_ptr</em> is |
| stored as a linear sequence of adjacent 2D image slices or 2D images |
| respectively. |
| Each 2D image is a linear sequence of adjacent scanlines. |
| Each scanline is a linear sequence of image elements.</p> |
| </div> |
| <div class="paragraph"> |
| <p>For a 2D image, the image data specified by <em>host_ptr</em> is stored as a linear |
| sequence of adjacent scanlines. |
| Each scanline is a linear sequence of image elements.</p> |
| </div> |
| <div class="paragraph"> |
| <p>For a 1D image array, the image data specified by <em>host_ptr</em> is stored as a |
| linear sequence of adjacent 1D images. |
| Each 1D image is stored as a single scanline which is a linear sequence of |
| adjacent elements.</p> |
| </div> |
| <div class="paragraph"> |
| <p>For 1D image or 1D image buffer, the image data specified by <em>host_ptr</em> is |
| stored as a single scanline which is a linear sequence of adjacent elements.</p> |
| </div> |
| <div class="paragraph"> |
| <p>Image elements are stored according to their image format as described in the |
| <a href="https://www.khronos.org/registry/OpenCL/specs/3.0-unified/html/OpenCL_API.html#image-format-descriptor" target="_blank" rel="noopener">Image Format Descriptor</a> section.</p> |
| </div> |
| <table id="external-image-memory-properties-table" class="tableblock frame-all grid-all stretch"> |
| <caption class="title">Table 1. List of supported image creation properties</caption> |
| <colgroup> |
| <col style="width: 33%;"> |
| <col style="width: 17%;"> |
| <col style="width: 50%;"> |
| </colgroup> |
| <thead> |
| <tr> |
| <th class="tableblock halign-left valign-top">Property</th> |
| <th class="tableblock halign-left valign-top">Property Value</th> |
| <th class="tableblock halign-left valign-top">Description</th> |
| </tr> |
| </thead> |
| <tbody> |
| <tr> |
| <td class="tableblock halign-left valign-top"><p class="tableblock"><code>CL_MEM_<wbr>DEVICE_<wbr>HANDLE_<wbr>LIST_<wbr>KHR</code></p> |
| <p class="tableblock">provided by the <code>cl_khr_external_memory</code> extension.</p></td> |
| <td class="tableblock halign-left valign-top"><p class="tableblock"><code>cl_device_<wbr>id</code>[]</p></td> |
| <td class="tableblock halign-left valign-top"><p class="tableblock">Specifies the list of OpenCL devices (terminated with |
| <code>CL_MEM_<wbr>DEVICE_<wbr>HANDLE_<wbr>LIST_<wbr>END_<wbr>KHR</code>) to associate with the external |
| memory handle.</p></td> |
| </tr> |
| </tbody> |
| </table> |
| <div class="paragraph"> |
| <p>If <code>CL_MEM_<wbr>DEVICE_<wbr>HANDLE_<wbr>LIST_<wbr>KHR</code> is not specified as part of <em>properties</em>, |
| the memory object created by <strong>clCreateBufferWithProperties</strong> or |
| <strong>clCreateImageWithProperties</strong> is by default accessible to all devices in the |
| <em>context</em>.</p> |
| </div> |
| <div class="paragraph"> |
| <p>The properties used to create an image from an external memory handle are |
| <a href="https://www.khronos.org/registry/OpenCL/specs/3.0-unified/html/OpenCL_API.html#external-memory-handle-types" target="_blank" rel="noopener">described for the corresponding |
| extensions</a>. |
| When an image is created from an external memory handle, the |
| <em>flags</em> used to specify usage information for the image must not |
| include <code>CL_MEM_<wbr>USE_<wbr>HOST_<wbr>PTR</code>, <code>CL_MEM_<wbr>ALLOC_<wbr>HOST_<wbr>PTR</code>, or |
| <code>CL_MEM_<wbr>COPY_<wbr>HOST_<wbr>PTR</code>, and the <em>host_ptr</em> argument must be <code>NULL</code>. |
| When images are created from an external memory handle, implementations may |
| acquire information about image attributes such as format and layout at the |
| time of creation. |
| When such information is acquired at image creation time, it is used for the |
| lifetime of the image object.</p> |
| </div> |
| <div class="paragraph"> |
| <p><strong>clCreateImage</strong> and <strong>clCreateImageWithProperties</strong> returns a valid non-zero |
| image object and <em>errcode_ret</em> is set to <code>CL_SUCCESS</code> if the image object |
| is created successfully. |
| Otherwise, they return a <code>NULL</code> value with one of the following error values |
| returned in <em>errcode_ret</em>:</p> |
| </div> |
| <div class="ulist"> |
| <ul> |
| <li> |
| <p><code>CL_INVALID_<wbr>CONTEXT</code> if <em>context</em> is not a valid context.</p> |
| </li> |
| <li> |
| <p><code>CL_INVALID_<wbr>PROPERTY</code> if a property name in <em>properties</em> is not a |
| supported property name, if the value specified for a supported property |
| name is not valid, or if the same property name is specified more than |
| once.</p> |
| </li> |
| <li> |
| <p><code>CL_INVALID_<wbr>VALUE</code> if values specified in <em>flags</em> are not valid.</p> |
| </li> |
| <li> |
| <p><code>CL_INVALID_<wbr>IMAGE_<wbr>FORMAT_<wbr>DESCRIPTOR</code> if values specified in <em>image_format</em> |
| are not valid or if <em>image_format</em> is <code>NULL</code>.</p> |
| </li> |
| <li> |
| <p><code>CL_INVALID_<wbr>IMAGE_<wbr>FORMAT_<wbr>DESCRIPTOR</code> if a 2D image is created from a |
| buffer and the row pitch and base address alignment does not follow the |
| rules described for creating a 2D image from a buffer.</p> |
| </li> |
| <li> |
| <p><code>CL_INVALID_<wbr>IMAGE_<wbr>FORMAT_<wbr>DESCRIPTOR</code> if a 2D image is created from a 2D |
| image object and the rules described above are not followed.</p> |
| </li> |
| <li> |
| <p><code>CL_INVALID_<wbr>IMAGE_<wbr>DESCRIPTOR</code> if values specified in <em>image_desc</em> are not |
| valid or if <em>image_desc</em> is <code>NULL</code>.</p> |
| </li> |
| <li> |
| <p><code>CL_INVALID_<wbr>IMAGE_<wbr>SIZE</code> if image dimensions specified in <em>image_desc</em> |
| exceed the maximum image dimensions described in the |
| <a href="https://www.khronos.org/registry/OpenCL/specs/3.0-unified/html/OpenCL_API.html#device-queries-table" target="_blank" rel="noopener">Device Queries</a> table for all devices |
| in <em>context</em>.</p> |
| </li> |
| <li> |
| <p><code>CL_INVALID_<wbr>HOST_<wbr>PTR</code> if <em>host_ptr</em> is <code>NULL</code> and <code>CL_MEM_<wbr>USE_<wbr>HOST_<wbr>PTR</code> or |
| <code>CL_MEM_<wbr>COPY_<wbr>HOST_<wbr>PTR</code> are set in <em>flags</em> or if <em>host_ptr</em> is not <code>NULL</code> |
| but <code>CL_MEM_<wbr>COPY_<wbr>HOST_<wbr>PTR</code> or <code>CL_MEM_<wbr>USE_<wbr>HOST_<wbr>PTR</code> are not set in <em>flags</em>.</p> |
| </li> |
| <li> |
| <p><code>CL_INVALID_<wbr>VALUE</code> if an image is being created from another memory object |
| (buffer or image) under one of the following circumstances: 1) |
| <em>mem_object</em> was created with <code>CL_MEM_<wbr>WRITE_<wbr>ONLY</code> and <em>flags</em> specifies |
| <code>CL_MEM_<wbr>READ_<wbr>WRITE</code> or <code>CL_MEM_<wbr>READ_<wbr>ONLY</code>, 2) <em>mem_object</em> was created with |
| <code>CL_MEM_<wbr>READ_<wbr>ONLY</code> and <em>flags</em> specifies <code>CL_MEM_<wbr>READ_<wbr>WRITE</code> or |
| <code>CL_MEM_<wbr>WRITE_<wbr>ONLY</code>, 3) <em>flags</em> specifies <code>CL_MEM_<wbr>USE_<wbr>HOST_<wbr>PTR</code> or |
| <code>CL_MEM_<wbr>ALLOC_<wbr>HOST_<wbr>PTR</code> or <code>CL_MEM_<wbr>COPY_<wbr>HOST_<wbr>PTR</code>.</p> |
| </li> |
| <li> |
| <p><code>CL_INVALID_<wbr>VALUE</code> if an image is being created from another memory object |
| (buffer or image) and <em>mem_object</em> was created with |
| <code>CL_MEM_<wbr>HOST_<wbr>WRITE_<wbr>ONLY</code> and <em>flags</em> specifies <code>CL_MEM_<wbr>HOST_<wbr>READ_<wbr>ONLY</code>, or |
| if <em>mem_object</em> was created with <code>CL_MEM_<wbr>HOST_<wbr>READ_<wbr>ONLY</code> and <em>flags</em> |
| specifies <code>CL_MEM_<wbr>HOST_<wbr>WRITE_<wbr>ONLY</code>, or if <em>mem_object</em> was created with |
| <code>CL_MEM_<wbr>HOST_<wbr>NO_<wbr>ACCESS</code> and_flags_ specifies <code>CL_MEM_<wbr>HOST_<wbr>READ_<wbr>ONLY</code> or |
| <code>CL_MEM_<wbr>HOST_<wbr>WRITE_<wbr>ONLY</code>.</p> |
| </li> |
| <li> |
| <p><code>CL_IMAGE_<wbr>FORMAT_<wbr>NOT_<wbr>SUPPORTED</code> if there are no devices in <em>context</em> that |
| support <em>image_format</em>.</p> |
| </li> |
| <li> |
| <p><code>CL_MEM_<wbr>OBJECT_<wbr>ALLOCATION_<wbr>FAILURE</code> if there is a failure to allocate |
| memory for image object.</p> |
| </li> |
| <li> |
| <p><code>CL_INVALID_<wbr>OPERATION</code> if there are no devices in <em>context</em> that support |
| images (i.e. <code>CL_DEVICE_<wbr>IMAGE_<wbr>SUPPORT</code> specified in the |
| <a href="https://www.khronos.org/registry/OpenCL/specs/3.0-unified/html/OpenCL_API.html#device-queries-table" target="_blank" rel="noopener">Device Queries</a> table is <code>CL_FALSE</code>).</p> |
| </li> |
| <li> |
| <p><code>CL_OUT_<wbr>OF_<wbr>RESOURCES</code> if there is a failure to allocate resources required |
| by the OpenCL implementation on the device.</p> |
| </li> |
| <li> |
| <p><code>CL_OUT_<wbr>OF_<wbr>HOST_<wbr>MEMORY</code> if there is a failure to allocate resources |
| required by the OpenCL implementation on the host.</p> |
| </li> |
| <li> |
| <p><code>CL_INVALID_<wbr>DEVICE</code></p> |
| <div class="ulist"> |
| <ul> |
| <li> |
| <p>if a device identified by the property <code>CL_MEM_<wbr>DEVICE_<wbr>HANDLE_<wbr>LIST_<wbr>KHR</code> |
| is not a valid device or is not associated with <em>context</em>, or</p> |
| </li> |
| <li> |
| <p>if a device identified by property <code>CL_MEM_<wbr>DEVICE_<wbr>HANDLE_<wbr>LIST_<wbr>KHR</code> |
| cannot import the requested external memory object type, or</p> |
| </li> |
| <li> |
| <p>if <code>CL_MEM_<wbr>DEVICE_<wbr>HANDLE_<wbr>LIST_<wbr>KHR</code> is not specified as part of |
| <em>properties</em> and one or more devices in <em>context</em> cannot import the |
| requested external memory object type.</p> |
| </li> |
| </ul> |
| </div> |
| </li> |
| <li> |
| <p><code>CL_INVALID_<wbr>VALUE</code></p> |
| <div class="ulist"> |
| <ul> |
| <li> |
| <p>if <em>properties</em> includes a supported external memory handle and <em>flags</em> |
| includes <code>CL_MEM_<wbr>USE_<wbr>HOST_<wbr>PTR</code>, <code>CL_MEM_<wbr>ALLOC_<wbr>HOST_<wbr>PTR</code>, or |
| <code>CL_MEM_<wbr>COPY_<wbr>HOST_<wbr>PTR</code>.</p> |
| </li> |
| </ul> |
| </div> |
| </li> |
| <li> |
| <p><code>CL_INVALID_<wbr>HOST_<wbr>PTR</code></p> |
| <div class="ulist"> |
| <ul> |
| <li> |
| <p>if <em>properties</em> includes a supported external memory handle and |
| <em>host_ptr</em> is not <code>NULL</code>.</p> |
| </li> |
| </ul> |
| </div> |
| </li> |
| <li> |
| <p><code>CL_INVALID_<wbr>PROPERTY</code></p> |
| <div class="ulist"> |
| <ul> |
| <li> |
| <p>if <em>properties</em> does not include a supported external memory handle and |
| <code>CL_MEM_<wbr>DEVICE_<wbr>HANDLE_<wbr>LIST_<wbr>KHR</code> is specified as part of <em>properties</em>.</p> |
| </li> |
| </ul> |
| </div> |
| </li> |
| </ul> |
| </div> |
| <table id="host-ptr-buffer-size-table" class="tableblock frame-all grid-all stretch"> |
| <caption class="title">Table 2. Required <em>host_ptr</em> buffer sizes for images</caption> |
| <colgroup> |
| <col style="width: 50%;"> |
| <col style="width: 50%;"> |
| </colgroup> |
| <thead> |
| <tr> |
| <th class="tableblock halign-left valign-top">Image Type</th> |
| <th class="tableblock halign-left valign-top">Size of buffer that <em>host_ptr</em> points to</th> |
| </tr> |
| </thead> |
| <tbody> |
| <tr> |
| <td class="tableblock halign-left valign-top"><p class="tableblock"><code>CL_MEM_<wbr>OBJECT_<wbr>IMAGE1D</code></p> |
| <p class="tableblock"><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 1.2.</p></td> |
| <td class="tableblock halign-left valign-top"><p class="tableblock">≥ image_row_pitch</p></td> |
| </tr> |
| <tr> |
| <td class="tableblock halign-left valign-top"><p class="tableblock"><code>CL_MEM_<wbr>OBJECT_<wbr>IMAGE1D_<wbr>BUFFER</code></p> |
| <p class="tableblock"><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 1.2.</p></td> |
| <td class="tableblock halign-left valign-top"><p class="tableblock">≥ image_row_pitch</p></td> |
| </tr> |
| <tr> |
| <td class="tableblock halign-left valign-top"><p class="tableblock"><code>CL_MEM_<wbr>OBJECT_<wbr>IMAGE2D</code></p></td> |
| <td class="tableblock halign-left valign-top"><p class="tableblock">≥ image_row_pitch × image_height</p></td> |
| </tr> |
| <tr> |
| <td class="tableblock halign-left valign-top"><p class="tableblock"><code>CL_MEM_<wbr>OBJECT_<wbr>IMAGE3D</code></p></td> |
| <td class="tableblock halign-left valign-top"><p class="tableblock">≥ image_slice_pitch × image_depth</p></td> |
| </tr> |
| <tr> |
| <td class="tableblock halign-left valign-top"><p class="tableblock"><code>CL_MEM_<wbr>OBJECT_<wbr>IMAGE1D_<wbr>ARRAY</code></p> |
| <p class="tableblock"><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 1.2.</p></td> |
| <td class="tableblock halign-left valign-top"><p class="tableblock">≥ image_slice_pitch × image_array_size</p></td> |
| </tr> |
| <tr> |
| <td class="tableblock halign-left valign-top"><p class="tableblock"><code>CL_MEM_<wbr>OBJECT_<wbr>IMAGE2D_<wbr>ARRAY</code></p> |
| <p class="tableblock"><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 1.2.</p></td> |
| <td class="tableblock halign-left valign-top"><p class="tableblock">≥ image_slice_pitch × image_array_size</p></td> |
| </tr> |
| </tbody> |
| </table> |
| </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_2.html">CL_VERSION_1_2</a>, <a href="CL_VERSION_3_0.html">CL_VERSION_3_0</a>, <a href="cl_context.html">cl_context</a>, <a href="cl_image_desc.html">cl_image_desc</a>, <a href="cl_image_format.html">cl_image_format</a>, <a href="cl_int.html">cl_int</a>, <a href="cl_mem_flags.html">cl_mem_flags</a>, <a href="cl_mem_properties.html">cl_mem_properties</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#clCreateImage" 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 2014-2024 The Khronos Group Inc.</p> |
| </div> |
| <div class="paragraph"> |
| <p>SPDX-License-Identifier: CC-BY-4.0</p> |
| </div> |
| </div> |
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