diff --git a/extensions/clext.php b/extensions/clext.php
index aa5f025..b6d58b6 100644
--- a/extensions/clext.php
+++ b/extensions/clext.php
@@ -85,11 +85,11 @@
 </li>
 <li value=43><a href="extensions/intel/cl_intel_required_subgroup_size.html">cl_intel_required_subgroup_size</a>
 </li>
-<li value=44><a href="extensions/img/cl_img_cached_allocations.txt">cl_img_cached_allocations</a>
+<li value=44><a href="extensions/img/cl_img_cached_allocations.html">cl_img_cached_allocations</a>
 </li>
-<li value=45><a href="extensions/img/cl_img_use_gralloc_ptr.txt">cl_img_use_gralloc_ptr</a>
+<li value=45><a href="extensions/img/cl_img_use_gralloc_ptr.html">cl_img_use_gralloc_ptr</a>
 </li>
-<li value=46><a href="extensions/img/cl_img_yuv_image.txt">cl_img_yuv_image</a>
+<li value=46><a href="extensions/img/cl_img_yuv_image.html">cl_img_yuv_image</a>
 </li>
 <li value=47><a href="extensions/intel/cl_intel_driver_diagnostics.txt">cl_intel_driver_diagnostics</a>
 </li>
@@ -129,4 +129,8 @@
 </li>
 <li value=65><a href="extensions/intel/cl_intel_mem_force_host_memory.html">cl_intel_mem_force_host_memory</a>
 </li>
+<li value=66><a href="extensions/img/cl_img_generate_mipmap.html">cl_img_generate_mipmap</a>
+</li>
+<li value=67><a href="extensions/img/cl_img_mem_properties.html">cl_img_mem_properties</a>
+</li>
 </ol>
diff --git a/extensions/img/cl_img_cached_allocations.html b/extensions/img/cl_img_cached_allocations.html
new file mode 100644
index 0000000..054cbf8
--- /dev/null
+++ b/extensions/img/cl_img_cached_allocations.html
@@ -0,0 +1,1063 @@
+<!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 2.0.10">
+<title>cl_img_cached_allocations</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: white; color: #222222; 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: #333333; }
+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 #dddddd; 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 #dddddd; 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 #dddddd; }
+blockquote cite { display: block; font-size: 0.8125em; color: #5e93b8; }
+blockquote cite:before { content: "\2014 \0020"; }
+blockquote cite a, blockquote cite a:visited { color: #5e93b8; }
+
+blockquote, blockquote p { line-height: 1.6; color: #333333; }
+
+/* Microformats */
+.vcard { display: inline-block; margin: 0 0 1.25em 0; border: 1px solid #dddddd; 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: white; margin-bottom: 1.25em; border: solid 1px #d8d8ce; }
+table thead, table tfoot { background: -webkit-linear-gradient(top, #add386, #90b66a); 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: white; 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: #edf2f2; }
+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: white; -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; -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 #dddddd; }
+#header > h1:only-child, body.toc2 #header > h1:nth-last-child(2) { border-bottom: 1px solid #dddddd; padding-bottom: 8px; }
+#header .details { border-bottom: 1px solid #dddddd; line-height: 1.45; padding-top: 0.25em; padding-bottom: 0.25em; padding-left: 0.25em; color: #5e93b8; 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: #333333; }
+#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: #333333; }
+#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 #dddddd; padding-bottom: 8px; margin-top: 0; padding-top: 1rem; margin-bottom: 1.25rem; }
+
+#toc { border-bottom: 0 solid #dddddd; 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: white; position: fixed; width: 15em; left: 0; top: 0; border-right: 1px solid #dddddd; 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 #dddddd; 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: white; -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-color: 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; }
+
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+<body class="book">
+<div id="header">
+<h1>cl_img_cached_allocations</h1>
+<div class="details">
+<span id="revnumber">version v3.0.5-12-gc767071,</span>
+<span id="revdate">Mon, 23 Nov 2020 10:54:24 +0000</span>
+<br><span id="revremark">from git branch: master commit: c767071fb1d0c1052fa039843d211fb795c2409c</span>
+</div>
+</div>
+<div id="content">
+<div class="sect1">
+<h2 id="_name_strings"><a class="anchor" href="#_name_strings"></a>Name Strings</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p><code>cl_img_cached_allocations</code></p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_contact"><a class="anchor" href="#_contact"></a>Contact</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>Imagination Technologies Developer Forum:<br>
+<a href="https://forums.imgtec.com/" class="bare">https://forums.imgtec.com/</a></p>
+</div>
+<div class="paragraph">
+<p>Jeremy Kemp, Imagination Technologies (Jeremy.Kemp 'at' imgtec.com)</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_contributors"><a class="anchor" href="#_contributors"></a>Contributors</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>Robert Quill, Imagination Technologies.<br>
+Jeremy Kemp, Imagination Technologies.</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_notice"><a class="anchor" href="#_notice"></a>Notice</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>Copyright (c) 2020 Imagination Technologies Ltd. All Rights Reserved.</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_status"><a class="anchor" href="#_status"></a>Status</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>Shipping</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_version"><a class="anchor" href="#_version"></a>Version</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>Built On: 2020-11-10<br>
+Version: 1.0.0</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_dependencies"><a class="anchor" href="#_dependencies"></a>Dependencies</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>Requires OpenCL version 1.2 or later.</p>
+</div>
+<div class="paragraph">
+<p>This extension is written against the wording of the OpenCL 3.0
+Specification.</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_overview"><a class="anchor" href="#_overview"></a>Overview</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>This extension extends the functionality provided by
+<strong>clCreateBuffer</strong> and <strong>clCreateImage</strong> to allow the OpenCL
+implementation to allocate memory on the device which
+is also cached on the host CPU.</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_new_api_enums"><a class="anchor" href="#_new_api_enums"></a>New API Enums</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>Accepted value for the <em>flags</em> parameter to <strong>clCreateBuffer</strong> and <strong>clCreateImage</strong>:</p>
+</div>
+<div class="listingblock">
+<div class="content">
+<pre class="CodeRay highlight"><code data-lang="c">CL_MEM_USE_UNCACHED_CPU_MEMORY_IMG (<span class="integer">1</span> &lt;&lt; <span class="integer">26</span>)
+CL_MEM_USE_CACHED_CPU_MEMORY_IMG   (<span class="integer">1</span> &lt;&lt; <span class="integer">27</span>)</code></pre>
+</div>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_modifications_to_the_opencl_api_specification"><a class="anchor" href="#_modifications_to_the_opencl_api_specification"></a>Modifications to the OpenCL API Specification</h2>
+<div class="sectionbody">
+<div class="dlist">
+<dl>
+<dt class="hdlist1">(Modify Section 5.2, <strong>Buffer Objects</strong>) </dt>
+<dd>
+<div class="openblock">
+<div class="content">
+<div class="dlist">
+<dl>
+<dt class="hdlist1">(Add the following to Table 5, <em>List of supported memory flag values</em>) </dt>
+</dl>
+</div>
+</div>
+</div>
+</dd>
+</dl>
+</div>
+<table class="tableblock frame-all grid-all stretch">
+<colgroup>
+<col style="width: 20%;">
+<col style="width: 80%;">
+</colgroup>
+<thead>
+<tr>
+<th class="tableblock halign-left valign-top">Memory Flags</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_USE_UNCACHED_CPU_MEMORY_IMG</code></p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">If this flag is specified it means that the application wants the OpenCL implementation to allocate memory on the device so that it is not cached when accessed on the host.</p></td>
+</tr>
+<tr>
+<td class="tableblock halign-left valign-top"><p class="tableblock"><code>CL_MEM_USE_CACHED_CPU_MEMORY_IMG</code></p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">If this flag is specified it means that the application wants the OpenCL implementation to allocate memory on the device so that it is cached when accessed on the host.</p></td>
+</tr>
+</tbody>
+</table>
+<div class="openblock">
+<div class="content">
+
+</div>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_issues"><a class="anchor" href="#_issues"></a>Issues</h2>
+<div class="sectionbody">
+<div class="olist arabic">
+<ol class="arabic">
+<li>
+<p>This extension may or may not improve performance; it depends on the
+specific use-case. It is most likely to improve performance in cases
+where the buffer or image is mapped using clEnqueueMapBuffer/Image
+and some processing is then performed on the host-side. Whether the
+allocation flag improves performance depends on whether the overhead
+of cache flushes is greater than the performance gain from cached
+memory accessing when doing the host-side processing. It&#8217;s recommended
+to apply the flag on case-by-case basis to see if it improves your
+use-case.</p>
+<div class="openblock">
+<div class="content">
+<div class="paragraph">
+<p><strong>INFORMATION</strong></p>
+</div>
+</div>
+</div>
+</li>
+</ol>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_revision_history"><a class="anchor" href="#_revision_history"></a>Revision History</h2>
+<div class="sectionbody">
+<table class="tableblock frame-all grid-rows stretch">
+<colgroup>
+<col style="width: 4.7619%;">
+<col style="width: 14.2857%;">
+<col style="width: 14.2857%;">
+<col style="width: 66.6667%;">
+</colgroup>
+<thead>
+<tr>
+<th class="tableblock halign-left valign-top">Version</th>
+<th class="tableblock halign-left valign-top">Date</th>
+<th class="tableblock halign-left valign-top">Author</th>
+<th class="tableblock halign-left valign-top">Changes</th>
+</tr>
+</thead>
+<tbody>
+<tr>
+<td class="tableblock halign-left valign-top"><p class="tableblock">1.0.0</p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">2020-11-09</p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">Jeremy Kemp</p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">Refreshed to AsciiDoc. Updated Contributors. Updated copyright notice. Updated the OpenCL spec which this extension spec is written against.</p></td>
+</tr>
+<tr>
+<td class="tableblock halign-left valign-top"><p class="tableblock">0.2.0</p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">2014-10-09</p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">Robert Quill</p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">Update overview section to say that the extension also supports images. Add more detail to the overview section.</p></td>
+</tr>
+<tr>
+<td class="tableblock halign-left valign-top"><p class="tableblock">0.1.0</p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">2014-10-07</p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">Robert Quill</p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">Initial revision.</p></td>
+</tr>
+</tbody>
+</table>
+</div>
+</div>
+</div>
+<div id="footer">
+<div id="footer-text">
+Version v3.0.5-12-gc767071<br>
+Last updated 2020-11-10 18:13:57 UTC
+</div>
+</div>
+<style>
+/* Stylesheet for CodeRay to match GitHub theme | MIT License | http://foundation.zurb.com */
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+<script src="https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/MathJax.js?config=TeX-MML-AM_HTMLorMML"></script>
+</body>
+</html>
\ No newline at end of file
diff --git a/extensions/img/cl_img_cached_allocations.txt b/extensions/img/cl_img_cached_allocations.txt
index a79cc9a..d435a0f 100644
--- a/extensions/img/cl_img_cached_allocations.txt
+++ b/extensions/img/cl_img_cached_allocations.txt
@@ -1,96 +1,11 @@
-Name
+The cl_img_cached_allocations.txt extension is no longer authored in plain text.
 
-    IMG_cached_allocations
+Please refer to the HTML extension specification instead,
+which may be found here:
 
-Name Strings
+https://www.khronos.org/registry/OpenCL/extensions/img/cl_img_cached_allocations.html
 
-    cl_img_cached_allocations
+The asciidoc source for this extension specification may
+be found here:
 
-Contributors
-
-    Jeremy Kemp
-
-Contacts
-
-    Jeremy Kemp, Imagination Technologies (jeremy.kemp 'at' imgtec.com)
-
-Status
-
-    Unapproved.
-
-Version
-
-    Revision: #3, Nov 6, 2014
-
-Number
-
-    OpenCL Extension #44
-
-Dependencies
-
-    Requires OpenCL version 1.2 or later.
-
-    This extension is written against the wording of the OpenCL 1.2
-    Specification.
-
-Overview
-
-    This extension extends the functionality provided by
-    clCreateBuffer and clCreateImage to allow the OpenCL
-    implementation to allocate memory on the device which
-    is also cached on the host CPU.
-
-Glossary
-
-    None
-
-New Types
-
-    None
-
-New Procedures and Functions
-
-    None
-
-New Tokens
-
-    CL_MEM_USE_UNCACHED_CPU_MEMORY_IMG           (1 << 26)
-
-    CL_MEM_USE_CACHED_CPU_MEMORY_IMG           (1 << 27)
-
-Additions to Chapter 5 of the OpenCL 1.2 Specification (Memory Objects)
-
-    In Table 5.3, page 69, add the following text as a new row in the table:
-
-    "CL_MEM_USE_UNCACHED_CPU_MEMORY_IMG
-
-      If this flag is specified it means that the application wants the
-      OpenCL implementation to allocate memory on the device so that it
-      is not cached when accessed on the host."
-
-    In Table 5.3, page 69, add the following text as a new row in the table:
-
-    "CL_MEM_USE_CACHED_CPU_MEMORY_IMG
-
-      If this flag is specified it means that the application wants the
-      OpenCL implementation to allocate memory on the device so that it
-      is cached when accessed on the host."
-
-Issues
-
-    1.  This extension may or may not improve performance; it depends on the
-        specific use-case. It is most likely to improve performance in cases
-        where the buffer or image is mapped using clEnqueueMapBuffer/Image
-        and some processing is then performed on the host-side. Whether the
-        allocation flag improves performance depends on whether the overhead
-        of cache flushes is greater than the performance gain  from cached
-        memory accessing when doing the host-side processing. It's recommended
-        to apply the flag on case-by-case basis to see if it improves your
-        use-case.
-
-Revision History
-
-#2    - Update overview section to say that the extension also supports images.
-        Add more detail to the overview section.
-
-#1    - Initial revision.
+https://github.com/KhronosGroup/OpenCL-Docs/blob/master/extensions/cl_img_cached_allocations.asciidoc
\ No newline at end of file
diff --git a/extensions/img/cl_img_generate_mipmap.html b/extensions/img/cl_img_generate_mipmap.html
new file mode 100644
index 0000000..51d54b0
--- /dev/null
+++ b/extensions/img/cl_img_generate_mipmap.html
@@ -0,0 +1,1124 @@
+<!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 2.0.10">
+<title>cl_img_generate_mipmap</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. */
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+
+script { display: none !important; }
+
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+html { font-family: sans-serif; /* 1 */ -ms-text-size-adjust: 100%; /* 2 */ -webkit-text-size-adjust: 100%; /* 2 */ }
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+/** 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; }
+
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+pre { white-space: pre-wrap; }
+
+/** Set consistent quote types. */
+q { quotes: "\201C" "\201D" "\2018" "\2019"; }
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+
+/** Address Firefox 4+ setting `line-height` on `input` using `!important` in the UA stylesheet. */
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+/** 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. */
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+
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+
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+
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+
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+
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+
+/* Typography resets */
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+
+/* 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 #dddddd; 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 #dddddd; 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 #dddddd; }
+blockquote cite { display: block; font-size: 0.8125em; color: #5e93b8; }
+blockquote cite:before { content: "\2014 \0020"; }
+blockquote cite a, blockquote cite a:visited { color: #5e93b8; }
+
+blockquote, blockquote p { line-height: 1.6; color: #333333; }
+
+/* Microformats */
+.vcard { display: inline-block; margin: 0 0 1.25em 0; border: 1px solid #dddddd; 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: white; margin-bottom: 1.25em; border: solid 1px #d8d8ce; }
+table thead, table tfoot { background: -webkit-linear-gradient(top, #add386, #90b66a); 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: white; 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: #edf2f2; }
+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: white; -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; -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 #dddddd; }
+#header > h1:only-child, body.toc2 #header > h1:nth-last-child(2) { border-bottom: 1px solid #dddddd; padding-bottom: 8px; }
+#header .details { border-bottom: 1px solid #dddddd; line-height: 1.45; padding-top: 0.25em; padding-bottom: 0.25em; padding-left: 0.25em; color: #5e93b8; 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: #333333; }
+#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: #333333; }
+#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 #dddddd; padding-bottom: 8px; margin-top: 0; padding-top: 1rem; margin-bottom: 1.25rem; }
+
+#toc { border-bottom: 0 solid #dddddd; 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: white; position: fixed; width: 15em; left: 0; top: 0; border-right: 1px solid #dddddd; 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 #dddddd; 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: white; -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-color: 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 #dddddd; }
+
+#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 #dddddd; color: #5e93b8; }
+.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: white; -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: white; -webkit-border-radius: 0; border-radius: 0; }
+.sidebarblock > :first-child { margin-top: 0; }
+.sidebarblock > :last-child { margin-bottom: 0; }
+.sidebarblock > .content > .title { color: black; margin-top: 0; }
+
+.exampleblock > .content > :last-child > :last-child, .exampleblock > .content .olist > ol > li:last-child > :last-child, .exampleblock > .content .ulist > ul > li:last-child > :last-child, .exampleblock > .content .qlist > ol > li:last-child > :last-child, .sidebarblock > .content > :last-child > :last-child, .sidebarblock > .content .olist > ol > li:last-child > :last-child, .sidebarblock > .content .ulist > ul > li:last-child > :last-child, .sidebarblock > .content .qlist > ol > li:last-child > :last-child { margin-bottom: 0; }
+
+.literalblock pre, .listingblock pre:not(.highlight), .listingblock pre[class="highlight"], .listingblock pre[class^="highlight "], .listingblock pre.CodeRay, .listingblock pre.prettyprint { background: #eeeeee; }
+.sidebarblock .literalblock pre, .sidebarblock .listingblock pre:not(.highlight), .sidebarblock .listingblock pre[class="highlight"], .sidebarblock .listingblock pre[class^="highlight "], .sidebarblock .listingblock pre.CodeRay, .sidebarblock .listingblock pre.prettyprint { background: #f2f1f1; }
+
+.literalblock pre, .literalblock pre[class], .listingblock pre, .listingblock pre[class] { border: 1px hidden #666666; -webkit-border-radius: 0; border-radius: 0; word-wrap: break-word; padding: 1.25em 1.5625em 1.125em 1.5625em; font-size: 0.8125em; }
+.literalblock pre.nowrap, .literalblock pre[class].nowrap, .listingblock pre.nowrap, .listingblock pre[class].nowrap { overflow-x: auto; white-space: pre; word-wrap: normal; }
+@media only screen and (min-width: 768px) { .literalblock pre, .literalblock pre[class], .listingblock pre, .listingblock pre[class] { font-size: 0.90625em; } }
+@media only screen and (min-width: 1280px) { .literalblock pre, .literalblock pre[class], .listingblock pre, .listingblock pre[class] { font-size: 1em; } }
+
+.literalblock.output pre { color: #eeeeee; 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 #dddddd; }
+
+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: #333333; 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 #5e93b8; }
+.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: #333333; 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; }
+.quoteblock .attribution cite, .verseblock .attribution cite { display: block; letter-spacing: -0.025em; color: #5e93b8; }
+
+.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; }
+
+table.grid-all > * > tr > .tableblock:last-child, table.grid-cols > * > tr > .tableblock:last-child { border-right-width: 0; }
+
+table.grid-all > tbody > tr:last-child > .tableblock, table.grid-all > thead:last-child > tr > .tableblock, table.grid-rows > tbody > tr:last-child > .tableblock, table.grid-rows > thead:last-child > tr > .tableblock { border-bottom-width: 0; }
+
+table.frame-all { border-width: 1px; }
+
+table.frame-sides { border-width: 0 1px; }
+
+table.frame-topbot { border-width: 1px 0; }
+
+th.halign-left, td.halign-left { text-align: left; }
+
+th.halign-right, td.halign-right { text-align: right; }
+
+th.halign-center, td.halign-center { text-align: center; }
+
+th.valign-top, td.valign-top { vertical-align: top; }
+
+th.valign-bottom, td.valign-bottom { vertical-align: bottom; }
+
+th.valign-middle, td.valign-middle { vertical-align: middle; }
+
+table thead th, table tfoot th { font-weight: bold; }
+
+tbody tr th { display: table-cell; line-height: 1.4; background: -webkit-linear-gradient(top, #add386, #90b66a); }
+
+tbody tr th, tbody tr th p, tfoot tr th, tfoot tr th p { color: white; font-weight: bold; }
+
+p.tableblock > code:only-child { background: none; padding: 0; }
+
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+</script></head>
+<body class="book">
+<div id="header">
+<h1>cl_img_generate_mipmap</h1>
+<div class="details">
+<span id="revnumber">version v3.0.5-12-gc767071,</span>
+<span id="revdate">Mon, 23 Nov 2020 10:54:25 +0000</span>
+<br><span id="revremark">from git branch: master commit: c767071fb1d0c1052fa039843d211fb795c2409c</span>
+</div>
+</div>
+<div id="content">
+<div class="sect1">
+<h2 id="_name_strings"><a class="anchor" href="#_name_strings"></a>Name Strings</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p><code>cl_img_generate_mipmap</code></p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_contact"><a class="anchor" href="#_contact"></a>Contact</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>Imagination Technologies Developer Forum:<br>
+<a href="https://forums.imgtec.com/" class="bare">https://forums.imgtec.com/</a></p>
+</div>
+<div class="paragraph">
+<p>Jeremy Kemp, Imagination Technologies (Jeremy.Kemp 'at' imgtec.com)</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_contributors"><a class="anchor" href="#_contributors"></a>Contributors</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>Kim Svensson, Imagination Technologies.<br>
+Timothy Smith, Imagination Technologies.<br>
+Robert Quill, Imagination Technologies.<br>
+Jeremy Kemp, Imagination Technologies.</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_notice"><a class="anchor" href="#_notice"></a>Notice</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>Copyright (c) 2020 Imagination Technologies Ltd. All Rights Reserved.</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_status"><a class="anchor" href="#_status"></a>Status</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>Shipping</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_version"><a class="anchor" href="#_version"></a>Version</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>Built On: 2020-11-23<br>
+Version: 1.0.0</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_dependencies"><a class="anchor" href="#_dependencies"></a>Dependencies</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>Requires the <code>cl_khr_mipmap_image</code> extension.</p>
+</div>
+<div class="paragraph">
+<p>This extension is written against the wording of the OpenCL 3.0 Specification.</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_overview"><a class="anchor" href="#_overview"></a>Overview</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>This extension adds the functionality to generate mipmap images from a source image and thus avoid having to generate and import mipmapped images from the host or through the <code>cl_khr_gl_sharing</code> extension.</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_new_api_types"><a class="anchor" href="#_new_api_types"></a>New API Types</h2>
+<div class="sectionbody">
+<div class="listingblock">
+<div class="content">
+<pre class="CodeRay highlight"><code data-lang="c"><span class="keyword">typedef</span> cl_uint cl_mipmap_filter_mode_img;</code></pre>
+</div>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_new_api_enums"><a class="anchor" href="#_new_api_enums"></a>New API Enums</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>Values accepted with  <code>cl_mipmap_filter_mode_img</code>:</p>
+</div>
+<div class="listingblock">
+<div class="content">
+<pre class="CodeRay highlight"><code data-lang="c">CL_MIPMAP_FILTER_ANY_IMG <span class="hex">0x0</span>
+CL_MIPMAP_FILTER_BOX_IMG <span class="hex">0x1</span></code></pre>
+</div>
+</div>
+<div class="paragraph">
+<p>New command types <code>cl_command_type</code>:</p>
+</div>
+<div class="listingblock">
+<div class="content">
+<pre class="CodeRay highlight"><code data-lang="c">CL_COMMAND_GENERATE_MIPMAP_IMG <span class="hex">0x40D6</span></code></pre>
+</div>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_new_api_functions"><a class="anchor" href="#_new_api_functions"></a>New API Functions</h2>
+<div class="sectionbody">
+<div class="listingblock">
+<div class="content">
+<pre class="CodeRay highlight"><code>cl_int CL_API_CALL clEnqueueGenerateMipmapIMG(
+    cl_command_queue command_queue,
+    cl_mem src_image,
+    cl_mem dst_image,
+    cl_mipmap_filter_mode_img mipmap_filter_mode,
+    const size_t *array_region,
+    const size_t *mip_region,
+    cl_uint num_events_in_wait_list,
+    const cl_event *event_wait_list,
+    cl_event *event);</code></pre>
+</div>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_modifications_to_the_opencl_api_specification"><a class="anchor" href="#_modifications_to_the_opencl_api_specification"></a>Modifications to the OpenCL API Specification</h2>
+<div class="sectionbody">
+<div class="dlist">
+<dl>
+<dt class="hdlist1">(Modify Section 5.3, <strong>Image Objects</strong>) </dt>
+<dd>
+<div class="dlist">
+<dl>
+<dt class="hdlist1">(Add a new Section 5.3.8, <em>Generating Mipmap Levels</em>) </dt>
+<dd>
+<div class="openblock">
+<div class="content">
+<div class="paragraph">
+<p>The function</p>
+</div>
+<div class="listingblock">
+<div class="content">
+<pre class="CodeRay highlight"><code>cl_int CL_API_CALL clEnqueueGenerateMipmapIMG(
+    cl_command_queue command_queue,
+    cl_mem src_image,
+    cl_mem dst_image,
+    cl_mipmap_filter_mode_img mipmap_filter_mode,
+    const size_t *array_region,
+    const size_t *mip_region,
+    cl_uint num_events_in_wait_list,
+    const cl_event *event_wait_list,
+    cl_event *event);</code></pre>
+</div>
+</div>
+<div class="paragraph">
+<p>is used to generate mipmap levels from a source image to a destination image. This allows for seamless mipmap level generation without involving the host to generate them, as that would involve reading back the image, generate its mipmap levels and then upload it to the device again. This reduces bandwidth cost of generating mipmap levels as no host copy is needed and may improve the speed of generating mipmap levels. The source image and destination image can be the same image in order to reduce programming and memory overhead. As with the extension for mipmaps, the size of the image must be a power of 2.</p>
+</div>
+<div class="paragraph">
+<p><em>command_queue</em> is a valid command-queue.</p>
+</div>
+<div class="paragraph">
+<p><em>src_image, dst_image</em> refer to a valid 1D, 2D, 3D image or a 1D image array, 2D image array objects. Where the <em>src_image</em> refer to the image where the mipmaps will be sourced from and <em>dst_image</em> is the image where the mipmaps will be generated to. The width, height, depth and image_array_size where applicable, must be the same for the <em>src_image</em> and <em>dst_image</em>. The image types of <em>src_image</em> and <em>dst_image</em> must be the same, therefore <em>dst_image</em> cannot be a 2D image if the <em>src_image</em> is of the type 2D image array. The image_channel_order and image_channel_data_type must be the same for both images. The <em>src_image</em> and <em>dst_image</em> can be the same image object to avoid unnecessary memory allocations.</p>
+</div>
+<div class="paragraph">
+<p><em>mipmap_filter_mode</em> refer to the filter mode to generate the mipmap levels with. <code>CL_MIPMAP_FILTER_ANY_IMG</code> allows the device to use any filter mode it deems necessary, whilst <code>CL_MIPMAP_FILTER_BOX_IMG</code> uses a box filter to sample down the image.</p>
+</div>
+<div class="paragraph">
+<p><em>array_region</em> Defines the (n,m) image range in a 1D and 2D image array to generate. If the <em>src_image</em> and <em>dst_image</em> is of the types 1D, 2D and 3D image, <em>array_region</em> must be <code>NULL</code>.</p>
+</div>
+<div class="paragraph">
+<p><em>mip_region</em> Defines the (n,m) region of mipmap levels to generate in <em>dst_image</em>. Where (n) defines the start of the region and (m) the end of region. If <em>mip_region</em> is <code>NULL</code>, all mipmap layers in <em>dst_image</em> will be generated. The (n) starting region must range from 0 to equal to the (m) end region whilst the (m) end region must range from 1 to one less than the maximum number of mipmap layers in <em>dst_image</em>, as mipmap layer indexing starts at 0. Setting <em>mip_region[0]</em> to 0 means that the mipmap layer 0 of <em>src_image</em> will be copied to mipmap layer 0 of <em>dst_image</em>. If <em>src_image</em> and <em>dst_image</em> is the same image and <em>mip_region[0]</em> = 0, no copy of layer 0 will occur and only generation of mipmaps would be executed.</p>
+</div>
+<div class="paragraph">
+<p><em>event_wait_list</em> and <em>num_events_in_wait_list</em> specify events that need to complete before this particular command can be executed. If <em>event_wait_list</em> is <code>NULL</code>, then this particular command does not wait on any event to complete. If <em>event_wait_list</em> is <code>NULL</code>, <em>num_events_in_wait_list</em> must be 0. If <em>event_wait_list</em> is not <code>NULL</code>, the list of events pointed to by <em>event_wait_list</em> must be valid and <em>num_events_in_wait_list</em> must be greater than 0. The events specified in <em>event_wait_list</em> act as synchronization points.</p>
+</div>
+<div class="paragraph">
+<p><em>event</em> returns an event object that identifies this particular command and can be used to query or queue a wait for this particular command to complete. <em>event</em> can be <code>NULL</code> in which case it will not be possible for the application to query the status of this command or queue a wait for this command to complete.</p>
+</div>
+<div class="paragraph">
+<p><strong>clEnqueueGenerateMipmapIMG</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_COMMAND_QUEUE</code> if <em>command_queue</em> is not a valid host command-queue.</p>
+</li>
+<li>
+<p><code>CL_INVALID_MEM_OBJECT</code> if <em>src_image</em> or <em>dst_image</em> are not a valid image object.</p>
+</li>
+<li>
+<p><code>CL_INVALID_MEM_OBJECT</code> if <em>src_image</em> and <em>dst_image</em> have different image type.</p>
+</li>
+<li>
+<p><code>CL_INVALID_IMAGE_FORMAT_DESCRIPTOR</code> if <em>src_image</em> and <em>dst_image</em> have different image_channel_order or image_channel_data_type.</p>
+</li>
+<li>
+<p><code>CL_INVALID_IMAGE_SIZE</code> if <em>src_image</em> and <em>dst_image</em> have different image size in mipmap layer 0, if the images are of image array type and have different image array size.</p>
+</li>
+<li>
+<p><code>CL_INVALID_CONTEXT</code> if the context associated with <em>command_queue</em>, <em>src_image</em> and <em>dst_image</em> are not the same or if the context associated with <em>command_queue</em> and events in event_wait_list are not the same.</p>
+</li>
+<li>
+<p><code>CL_INVALID_MIP_LEVEL</code> if <em>mip_region[0]</em> is greater than <em>mip_region[1]</em>, or if <em>mip_region[0]</em> is less than 0, or if <em>mip_region[1]</em> is less than 1, or if <em>mip_region[1]</em> is greater than the number of mipmap levels in <em>dst_image</em>.</p>
+</li>
+<li>
+<p><code>CL_INVALID_VALUE</code> if the images are not of the type image array and <em>array_region</em> is not <code>NULL</code>, or the images are of type image array and <em>array_region</em> is <code>NULL</code>.</p>
+</li>
+<li>
+<p><code>CL_INVALID_VALUE</code> if the images are of type image array and <em>array_region</em> refer to a range outside of the available range in <em>dst_image</em> and <em>src_image</em>, or if <em>array_region[0]</em> is greater than <em>array_region[1]</em>.</p>
+</li>
+<li>
+<p><code>CL_INVALID_EVENT_WAIT_LIST</code> if <em>event_wait_list</em> is <code>NULL</code> and <em>num_events_in_wait_list</em> &gt; 0, or <em>event_wait_list</em> is not <code>NULL</code> and <em>num_events_in_wait_list</em> is 0, or if event objects in <em>event_wait_list</em> are not valid events.</p>
+</li>
+<li>
+<p><code>CL_OUT_OF_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_OF_HOST_MEMORY</code> if there is a failure to allocate resources required by the OpenCL implementation on the host.</p>
+</li>
+</ul>
+</div>
+</div>
+</div>
+</dd>
+</dl>
+</div>
+</dd>
+</dl>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_revision_history"><a class="anchor" href="#_revision_history"></a>Revision History</h2>
+<div class="sectionbody">
+<table class="tableblock frame-all grid-rows stretch">
+<colgroup>
+<col style="width: 4.7619%;">
+<col style="width: 14.2857%;">
+<col style="width: 14.2857%;">
+<col style="width: 66.6667%;">
+</colgroup>
+<thead>
+<tr>
+<th class="tableblock halign-left valign-top">Version</th>
+<th class="tableblock halign-left valign-top">Date</th>
+<th class="tableblock halign-left valign-top">Author</th>
+<th class="tableblock halign-left valign-top">Changes</th>
+</tr>
+</thead>
+<tbody>
+<tr>
+<td class="tableblock halign-left valign-top"><p class="tableblock">1.0.0</p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">2020-11-10</p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">Jeremy Kemp</p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">Refreshed to AsciiDoc. Updated Contributors. Updated copyright notice. Updated the OpenCL spec which this extension spec is written against. Updated dependencies.</p></td>
+</tr>
+<tr>
+<td class="tableblock halign-left valign-top"><p class="tableblock">0.1.0</p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">2017-06-26</p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">Robert Quill</p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">Initial revision.</p></td>
+</tr>
+</tbody>
+</table>
+</div>
+</div>
+</div>
+<div id="footer">
+<div id="footer-text">
+Version v3.0.5-12-gc767071<br>
+Last updated 2020-11-23 10:53:20 UTC
+</div>
+</div>
+<style>
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+table.CodeRay{border-collapse:separate;border:0;margin-bottom:0;background:none}
+table.CodeRay td{vertical-align:top;line-height:inherit}
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+.CodeRay .change .change{color:#66f}
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+</style>
+
+<script src="https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/MathJax.js?config=TeX-MML-AM_HTMLorMML"></script>
+</body>
+</html>
\ No newline at end of file
diff --git a/extensions/img/cl_img_mem_properties.html b/extensions/img/cl_img_mem_properties.html
new file mode 100644
index 0000000..421e31f
--- /dev/null
+++ b/extensions/img/cl_img_mem_properties.html
@@ -0,0 +1,1047 @@
+<!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 2.0.10">
+<title>cl_img_mem_properties</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: white; color: #222222; 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: #333333; }
+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 #dddddd; 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 #dddddd; 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 #dddddd; }
+blockquote cite { display: block; font-size: 0.8125em; color: #5e93b8; }
+blockquote cite:before { content: "\2014 \0020"; }
+blockquote cite a, blockquote cite a:visited { color: #5e93b8; }
+
+blockquote, blockquote p { line-height: 1.6; color: #333333; }
+
+/* Microformats */
+.vcard { display: inline-block; margin: 0 0 1.25em 0; border: 1px solid #dddddd; 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: white; margin-bottom: 1.25em; border: solid 1px #d8d8ce; }
+table thead, table tfoot { background: -webkit-linear-gradient(top, #add386, #90b66a); 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: white; 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: #edf2f2; }
+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: white; -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; -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 #dddddd; }
+#header > h1:only-child, body.toc2 #header > h1:nth-last-child(2) { border-bottom: 1px solid #dddddd; padding-bottom: 8px; }
+#header .details { border-bottom: 1px solid #dddddd; line-height: 1.45; padding-top: 0.25em; padding-bottom: 0.25em; padding-left: 0.25em; color: #5e93b8; 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: #333333; }
+#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: #333333; }
+#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 #dddddd; padding-bottom: 8px; margin-top: 0; padding-top: 1rem; margin-bottom: 1.25rem; }
+
+#toc { border-bottom: 0 solid #dddddd; 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: white; position: fixed; width: 15em; left: 0; top: 0; border-right: 1px solid #dddddd; 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 #dddddd; 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: white; -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-color: none; padding: 1.25em; }
+
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+
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+
+@media only screen and (min-width: 768px) { #content { margin-bottom: 1.25em; }
+  .sect1 { padding-bottom: 1.25em; } }
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+                ]
+            }
+        );
+    });
+</script></head>
+<body class="book">
+<div id="header">
+<h1>cl_img_mem_properties</h1>
+<div class="details">
+<span id="revnumber">version v3.0.5-12-gc767071,</span>
+<span id="revdate">Mon, 23 Nov 2020 10:54:26 +0000</span>
+<br><span id="revremark">from git branch: master commit: c767071fb1d0c1052fa039843d211fb795c2409c</span>
+</div>
+</div>
+<div id="content">
+<div class="sect1">
+<h2 id="_name_strings"><a class="anchor" href="#_name_strings"></a>Name Strings</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p><code>cl_img_mem_properties</code></p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_contact"><a class="anchor" href="#_contact"></a>Contact</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>Imagination Technologies Developer Forum:<br>
+<a href="https://forums.imgtec.com/" class="bare">https://forums.imgtec.com/</a></p>
+</div>
+<div class="paragraph">
+<p>Jeremy Kemp, Imagination Technologies (Jeremy.Kemp 'at' imgtec.com)</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_contributors"><a class="anchor" href="#_contributors"></a>Contributors</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>Jeremy Kemp, Imagination Technologies.<br>
+Anitha Raj,  Imagination Technologies.</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_notice"><a class="anchor" href="#_notice"></a>Notice</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>Copyright (c) 2020 Imagination Technologies Ltd. All Rights Reserved.</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_status"><a class="anchor" href="#_status"></a>Status</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>Shipping</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_version"><a class="anchor" href="#_version"></a>Version</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>Built On: 2020-11-23<br>
+Version: 1.0.0</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_dependencies"><a class="anchor" href="#_dependencies"></a>Dependencies</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>This extension requires OpenCL 3.0 or later.</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_overview"><a class="anchor" href="#_overview"></a>Overview</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>This extension provides additional <em>properties</em> that can be passed to <strong>clCreateBufferWithProperties</strong>.</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_new_api_types"><a class="anchor" href="#_new_api_types"></a>New API Types</h2>
+<div class="sectionbody">
+<div class="listingblock">
+<div class="content">
+<pre class="CodeRay highlight"><code data-lang="c"><span class="keyword">typedef</span> cl_bitfield cl_mem_alloc_flags_img;</code></pre>
+</div>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_new_api_enums"><a class="anchor" href="#_new_api_enums"></a>New API Enums</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>Accepted propertie(s) for the <em>properties</em> parameter to <strong>clCreateBufferWithProperties</strong>:</p>
+</div>
+<div class="listingblock">
+<div class="content">
+<pre class="CodeRay highlight"><code data-lang="c"><span class="preprocessor">#define</span> CL_MEM_ALLOC_FLAGS_IMG <span class="hex">0x40D7</span></code></pre>
+</div>
+</div>
+<div class="paragraph">
+<p>Accepted values for <code>cl_mem_alloc_flags_img</code>:</p>
+</div>
+<div class="listingblock">
+<div class="content">
+<pre class="CodeRay highlight"><code data-lang="c"><span class="preprocessor">#define</span> CL_MEM_ALLOC_RELAX_REQUIREMENTS_IMG (<span class="integer">1</span> &lt;&lt; <span class="integer">0</span>)</code></pre>
+</div>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_modifications_to_the_opencl_api_specification"><a class="anchor" href="#_modifications_to_the_opencl_api_specification"></a>Modifications to the OpenCL API Specification</h2>
+<div class="sectionbody">
+<div class="dlist">
+<dl>
+<dt class="hdlist1">(Modify Section 5.2.1, <strong>Creating Buffer Objects</strong>) </dt>
+<dd>
+<div class="openblock">
+<div class="content">
+<div class="dlist">
+<dl>
+<dt class="hdlist1">Add Table: List of supported <em>properties</em> when passed to <strong>clCreateBufferWithProperties</strong> </dt>
+<dd>
+<table class="tableblock frame-all grid-all" style="width: 90%;">
+<colgroup>
+<col style="width: 16.6666%;">
+<col style="width: 16.6666%;">
+<col style="width: 66.6668%;">
+</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_ALLOC_FLAGS_IMG</code></p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock"><code>cl_mem_alloc_flags_img</code></p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock"><code>CL_MEM_ALLOC_RELAX_REQUIREMENTS_IMG</code> - On platforms with limited amounts of global memory available it may be desirable to request an allocation larger than the maximum amount reported by the implementation via <code>CL_DEVICE_MAX_MEM_ALLOC_SIZE</code> if there is sufficient knowledge about the entire system.
+This property allows an application to request buffer objects that are larger than <code>CL_DEVICE_MAX_MEM_ALLOC_SIZE</code>.</p></td>
+</tr>
+</tbody>
+</table>
+</dd>
+<dt class="hdlist1">(Replace the following error value) </dt>
+<dd>
+<div class="ulist">
+<ul>
+<li>
+<p><code>CL_INVALID_BUFFER_SIZE</code> if <em>size</em> is 0 or if <em>size</em> is greater than <code>CL_DEVICE_MAX_MEM_ALLOC_SIZE</code> for all devices in <em>context</em>.</p>
+<div class="paragraph">
+<p>with</p>
+</div>
+</li>
+<li>
+<p><code>CL_INVALID_BUFFER_SIZE</code> if <em>size</em> is 0.</p>
+</li>
+</ul>
+</div>
+</dd>
+</dl>
+</div>
+</div>
+</div>
+</dd>
+</dl>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_revision_history"><a class="anchor" href="#_revision_history"></a>Revision History</h2>
+<div class="sectionbody">
+<table class="tableblock frame-all grid-rows stretch">
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+</colgroup>
+<thead>
+<tr>
+<th class="tableblock halign-left valign-top">Version</th>
+<th class="tableblock halign-left valign-top">Date</th>
+<th class="tableblock halign-left valign-top">Author</th>
+<th class="tableblock halign-left valign-top">Changes</th>
+</tr>
+</thead>
+<tbody>
+<tr>
+<td class="tableblock halign-left valign-top"><p class="tableblock">1.0.0</p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">2020-08-18</p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">Jeremy Kemp</p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">Initial revision.</p></td>
+</tr>
+</tbody>
+</table>
+</div>
+</div>
+</div>
+<div id="footer">
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+Last updated 2020-11-23 10:53:20 UTC
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+.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: #333333; }
+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 #dddddd; 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 #dddddd; 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 #dddddd; }
+blockquote cite { display: block; font-size: 0.8125em; color: #5e93b8; }
+blockquote cite:before { content: "\2014 \0020"; }
+blockquote cite a, blockquote cite a:visited { color: #5e93b8; }
+
+blockquote, blockquote p { line-height: 1.6; color: #333333; }
+
+/* Microformats */
+.vcard { display: inline-block; margin: 0 0 1.25em 0; border: 1px solid #dddddd; 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: white; margin-bottom: 1.25em; border: solid 1px #d8d8ce; }
+table thead, table tfoot { background: -webkit-linear-gradient(top, #add386, #90b66a); 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: white; 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: #edf2f2; }
+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: white; -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; -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 #dddddd; }
+#header > h1:only-child, body.toc2 #header > h1:nth-last-child(2) { border-bottom: 1px solid #dddddd; padding-bottom: 8px; }
+#header .details { border-bottom: 1px solid #dddddd; line-height: 1.45; padding-top: 0.25em; padding-bottom: 0.25em; padding-left: 0.25em; color: #5e93b8; 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: #333333; }
+#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: #333333; }
+#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 #dddddd; padding-bottom: 8px; margin-top: 0; padding-top: 1rem; margin-bottom: 1.25rem; }
+
+#toc { border-bottom: 0 solid #dddddd; 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: white; position: fixed; width: 15em; left: 0; top: 0; border-right: 1px solid #dddddd; 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 #dddddd; 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: white; -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-color: 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 #dddddd; }
+
+#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 #dddddd; color: #5e93b8; }
+.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: white; -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: white; -webkit-border-radius: 0; border-radius: 0; }
+.sidebarblock > :first-child { margin-top: 0; }
+.sidebarblock > :last-child { margin-bottom: 0; }
+.sidebarblock > .content > .title { color: black; margin-top: 0; }
+
+.exampleblock > .content > :last-child > :last-child, .exampleblock > .content .olist > ol > li:last-child > :last-child, .exampleblock > .content .ulist > ul > li:last-child > :last-child, .exampleblock > .content .qlist > ol > li:last-child > :last-child, .sidebarblock > .content > :last-child > :last-child, .sidebarblock > .content .olist > ol > li:last-child > :last-child, .sidebarblock > .content .ulist > ul > li:last-child > :last-child, .sidebarblock > .content .qlist > ol > li:last-child > :last-child { margin-bottom: 0; }
+
+.literalblock pre, .listingblock pre:not(.highlight), .listingblock pre[class="highlight"], .listingblock pre[class^="highlight "], .listingblock pre.CodeRay, .listingblock pre.prettyprint { background: #eeeeee; }
+.sidebarblock .literalblock pre, .sidebarblock .listingblock pre:not(.highlight), .sidebarblock .listingblock pre[class="highlight"], .sidebarblock .listingblock pre[class^="highlight "], .sidebarblock .listingblock pre.CodeRay, .sidebarblock .listingblock pre.prettyprint { background: #f2f1f1; }
+
+.literalblock pre, .literalblock pre[class], .listingblock pre, .listingblock pre[class] { border: 1px hidden #666666; -webkit-border-radius: 0; border-radius: 0; word-wrap: break-word; padding: 1.25em 1.5625em 1.125em 1.5625em; font-size: 0.8125em; }
+.literalblock pre.nowrap, .literalblock pre[class].nowrap, .listingblock pre.nowrap, .listingblock pre[class].nowrap { overflow-x: auto; white-space: pre; word-wrap: normal; }
+@media only screen and (min-width: 768px) { .literalblock pre, .literalblock pre[class], .listingblock pre, .listingblock pre[class] { font-size: 0.90625em; } }
+@media only screen and (min-width: 1280px) { .literalblock pre, .literalblock pre[class], .listingblock pre, .listingblock pre[class] { font-size: 1em; } }
+
+.literalblock.output pre { color: #eeeeee; 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 #dddddd; }
+
+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: #333333; 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 #5e93b8; }
+.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: #333333; 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; }
+.quoteblock .attribution cite, .verseblock .attribution cite { display: block; letter-spacing: -0.025em; color: #5e93b8; }
+
+.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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+</script></head>
+<body class="book">
+<div id="header">
+<h1>cl_img_use_gralloc_ptr</h1>
+<div class="details">
+<span id="revnumber">version v3.0.5-12-gc767071,</span>
+<span id="revdate">Mon, 23 Nov 2020 10:54:25 +0000</span>
+<br><span id="revremark">from git branch: master commit: c767071fb1d0c1052fa039843d211fb795c2409c</span>
+</div>
+</div>
+<div id="content">
+<div class="sect1">
+<h2 id="_name_strings"><a class="anchor" href="#_name_strings"></a>Name Strings</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p><code>cl_img_use_gralloc_ptr</code></p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_contact"><a class="anchor" href="#_contact"></a>Contact</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>Imagination Technologies Developer Forum:<br>
+<a href="https://forums.imgtec.com/" class="bare">https://forums.imgtec.com/</a></p>
+</div>
+<div class="paragraph">
+<p>Jeremy Kemp, Imagination Technologies (Jeremy.Kemp 'at' imgtec.com)</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_contributors"><a class="anchor" href="#_contributors"></a>Contributors</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>Robert Quill, Imagination Technologies.<br>
+Paul Fradgley, Imagination Technologies.<br>
+Jeremy Kemp, Imagination Technologies.</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_notice"><a class="anchor" href="#_notice"></a>Notice</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>Copyright (c) 2020 Imagination Technologies Ltd. All Rights Reserved.</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_status"><a class="anchor" href="#_status"></a>Status</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>Shipping</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_version"><a class="anchor" href="#_version"></a>Version</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>Built On: 2020-11-10<br>
+Version: 1.0.0</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_dependencies"><a class="anchor" href="#_dependencies"></a>Dependencies</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>Requires OpenCL version 1.2 or later. Android OS is required.</p>
+</div>
+<div class="paragraph">
+<p>This extension is written against the wording of the OpenCL 3.0
+Specification.</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_overview"><a class="anchor" href="#_overview"></a>Overview</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>This extension extends the functionality provided by <strong>clCreateBuffer</strong> and <strong>clCreateImage</strong>.
+It allows applications to pass an Android memory allocation to these functions and thus avoid having to copy data back and forth between the host and the device.</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_new_api_enums"><a class="anchor" href="#_new_api_enums"></a>New API Enums</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>New command types <code>cl_command_type</code>:</p>
+</div>
+<div class="listingblock">
+<div class="content">
+<pre class="CodeRay highlight"><code data-lang="c">CL_COMMAND_ACQUIRE_GRALLOC_OBJECTS_IMG <span class="hex">0x40D2</span>
+CL_COMMAND_RELEASE_GRALLOC_OBJECTS_IMG <span class="hex">0x40D3</span></code></pre>
+</div>
+</div>
+<div class="paragraph">
+<p>New error codes:</p>
+</div>
+<div class="listingblock">
+<div class="content">
+<pre class="CodeRay highlight"><code data-lang="c">CL_GRALLOC_RESOURCE_NOT_ACQUIRED_IMG <span class="hex">0x40D4</span>
+CL_INVALID_GRALLOC_OBJECT_IMG        <span class="hex">0x40D5</span></code></pre>
+</div>
+</div>
+<div class="paragraph">
+<p>Accepted value for the <em>flags</em> parameter to <strong>clCreateBuffer</strong> and <strong>clCreateImage</strong>:</p>
+</div>
+<div class="listingblock">
+<div class="content">
+<pre class="CodeRay highlight"><code data-lang="c">CL_MEM_USE_GRALLOC_PTR_IMG (<span class="integer">1</span> &lt;&lt; <span class="integer">28</span>)</code></pre>
+</div>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_new_api_functions"><a class="anchor" href="#_new_api_functions"></a>New API Functions</h2>
+<div class="sectionbody">
+<div class="listingblock">
+<div class="content">
+<pre class="CodeRay highlight"><code>cl_int CL_API_CALL clEnqueueAcquireGrallocObjectsIMG(
+    cl_command_queue command_queue,
+    cl_uint num_objects,
+    const cl_mem *mem_objects,
+    cl_uint num_events_in_wait_list,
+    const cl_event *event_wait_list,
+    cl_event *event);
+
+cl_int CL_API_CALL clEnqueueReleaseGrallocObjectsIMG(
+    cl_command_queue command_queue,
+    cl_uint num_objects,
+    const cl_mem *mem_objects,
+    cl_uint num_events_in_wait_list,
+    const cl_event *event_wait_list,
+    cl_event *event);</code></pre>
+</div>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_modifications_to_the_opencl_api_specification"><a class="anchor" href="#_modifications_to_the_opencl_api_specification"></a>Modifications to the OpenCL API Specification</h2>
+<div class="sectionbody">
+<div class="dlist">
+<dl>
+<dt class="hdlist1">(Modify Section 5.2, <strong>Buffer Objects</strong>) </dt>
+<dd>
+<div class="openblock">
+<div class="content">
+<div class="dlist">
+<dl>
+<dt class="hdlist1">(Add the following to Table 5, <em>List of supported memory flag values</em>) </dt>
+<dd>
+<table class="tableblock frame-all grid-all stretch">
+<colgroup>
+<col style="width: 20%;">
+<col style="width: 80%;">
+</colgroup>
+<thead>
+<tr>
+<th class="tableblock halign-left valign-top">Memory Flags</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_USE_GRALLOC_PTR_IMG</code></p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">This flag is only valid of <em>host_ptr</em> is not <code>NULL</code>. The value given in <em>host_ptr</em> is an Android memory allocation.</p>
+<p class="tableblock">If this flag is specified to <strong>clCreateBuffer</strong>, then <em>host_ptr</em> must be an Android <code>buffer_handle_t</code>. It means that the application wants the OpenCL implementation to use memory referenced by the <code>buffer_handle_t</code> as the storage bits for the memory object.</p>
+<p class="tableblock">If this flag is specified to <strong>clCreateImage</strong>, then <em>host_ptr</em> must be an Android <code>ANativeWindowBuffer</code>. It means that the application wants the OpenCL implementation to use memory referenced by the <code>ANativeWindowBuffer</code> as the storage bits for the memory object.</p>
+<p class="tableblock"><em>size</em> must be 0 if this flag is set when given to <strong>clCreateBuffer</strong>. The size of the buffer is determined from the size of the Android allocation.</p></td>
+</tr>
+</tbody>
+</table>
+</dd>
+<dt class="hdlist1">(Add the following to Section 5.2.1, <em>Creating Buffer Objects</em>) </dt>
+<dd>
+<div class="dlist">
+<dl>
+<dt class="hdlist1">(Add the following error conditions to the list after this section) </dt>
+<dd>
+<p><code>CL_INVALID_BUFER_SIZE</code> if <em>size</em> is non-zero and <em>flags</em> contains <code>CL_MEM_USE_GRALLOC_PTR_IMG</code>.</p>
+</dd>
+<dt class="hdlist1">(Replace the following paragraph) </dt>
+<dd>
+<p><code>CL_INVALID_HOST_PTR</code> if <em>host_ptr</em> is <code>NULL</code> and <code>CL_MEM_USE_HOST_PTR</code> or <code>CL_MEM_COPY_HOST_PTR</code> are set in <em>flags</em> or if <em>host_ptr</em> is not <code>NULL</code> but <code>CL_MEM_COPY_HOST_PTR</code> or <code>CL_MEM_USE_HOST_PTR</code> are not set in <em>flags</em>.</p>
+<div class="paragraph">
+<p>with</p>
+</div>
+<div class="paragraph">
+<p><code>CL_INVALID_HOST_PTR</code> if <em>host_ptr</em> is <code>NULL</code> and <code>CL_MEM_USE_HOST_PTR</code>, <code>CL_MEM_COPY_HOST_PTR</code> or <code>CL_MEM_USE_GRALLOC_PTR_IMG</code> are set in <em>flags</em> or if <em>host_ptr</em> is not <code>NULL</code> but <code>CL_MEM_COPY_HOST_PTR</code>, <code>CL_MEM_USE_HOST_PTR</code> or <code>CL_MEM_USE_GRALLOC_PTR_IMG</code> are not set in <em>flags</em>.</p>
+</div>
+</dd>
+</dl>
+</div>
+</dd>
+</dl>
+</div>
+</div>
+</div>
+</dd>
+<dt class="hdlist1">(Modify Section 5.3, <strong>Image Objects</strong>) </dt>
+<dd>
+<div class="openblock">
+<div class="content">
+<div class="dlist">
+<dl>
+<dt class="hdlist1">(Add the following to Section 5.3.1, <em>Creating Image Objects</em>) </dt>
+<dd>
+<div class="dlist">
+<dl>
+<dt class="hdlist1">(Replace the following paragraph) </dt>
+<dd>
+<p><code>CL_INVALID_IMAGE_DESCRIPTOR</code> if values specified in <em>image_desc</em> are not valid or if <em>image_desc</em> is <code>NULL</code>.</p>
+<div class="paragraph">
+<p>with</p>
+</div>
+<div class="paragraph">
+<p><code>CL_INVALID_IMAGE_DESCRIPTOR</code> if <em>image_desc</em> is <code>NULL</code> and <em>flags</em> does not contain <code>CL_MEM_USE_GRALLOC_PTR_IMG</code>, or if <em>image_desc</em> is not <code>NULL</code> and <em>flags</em> contains <code>CL_MEM_USE_GRALLOC_PTR_IMG</code>, or if values specified in <em>image_desc</em> are not valid.</p>
+</div>
+</dd>
+<dt class="hdlist1">(Replace the following paragraph) </dt>
+<dd>
+<p><code>CL_INVALID_HOST_PTR</code> if <em>host_ptr</em> is <code>NULL</code> and <code>CL_MEM_USE_HOST_PTR</code> or <code>CL_MEM_COPY_HOST_PTR</code> are set in <em>flags</em> or if <em>host_ptr</em> is not <code>NULL</code> but <code>CL_MEM_COPY_HOST_PTR</code> or <code>CL_MEM_USE_HOST_PTR</code> are not set in <em>flags</em>.</p>
+<div class="paragraph">
+<p>with</p>
+</div>
+<div class="paragraph">
+<p><code>CL_INVALID_HOST_PTR</code> if <em>host_ptr</em> is <code>NULL</code> and <code>CL_MEM_USE_HOST_PTR</code>, <code>CL_MEM_COPY_HOST_PTR</code> or <code>CL_MEM_USE_GRALLOC_PTR_IMG</code> are set in <em>flags</em> or if <em>host_ptr</em> is not <code>NULL</code> but <code>CL_MEM_COPY_HOST_PTR</code>, <code>CL_MEM_USE_HOST_PTR</code> or <code>CL_MEM_USE_GRALLOC_PTR_IMG</code> are not set in <em>flags</em>.</p>
+</div>
+</dd>
+</dl>
+</div>
+</dd>
+</dl>
+</div>
+</div>
+</div>
+</dd>
+<dt class="hdlist1">(Add a new Section 5.16, <em>Sharing OpenCL and Gralloc Objects</em>) </dt>
+<dd>
+<div class="dlist">
+<dl>
+<dt class="hdlist1">(Add a new Section 5.16.1, <em>Synchronizing OpenCL and Android Access to Shared Gralloc Objects</em>) </dt>
+<dd>
+<p>In order to ensure data integrity, the application is responsible for synchronizing access to shared CL/gralloc objects by their respective APIs. Failure to provide such synchronization may result in race conditions and other undefined behaviour including non-portability between implementations.</p>
+<div class="paragraph">
+<p>Prior to calling <strong>clEnqueueAcquireGrallocObjectsIMG</strong>, the application must ensure that any pending operations which access the objects specified in <em>mem_objects</em> have completed. This may be accomplished in a portable way by ceasing all client operations on the resource. Implementations may offer more efficient synchronization methods, such as synchronisation primitives or fence operations.</p>
+</div>
+<div class="paragraph">
+<p>Similarly, after calling <strong>clEnqueueReleaseGrallocObjectsIMG</strong>, the application is responsible for ensuring that any pending OpenCL operations which access the objects specified in <em>mem_objects</em> have completed prior to executing subsequent commands in other APIs which reference these objects. This may be accomplished in a portable way by calling <strong>clWaitForEvents</strong> with the event object returned by <strong>clEnqueueReleaseGrallocObjects</strong>, or by calling <strong>clFinish</strong>. As above, some implementations may offer more efficient methods.</p>
+</div>
+<div class="paragraph">
+<p>Attempting to access the data store of a gralloc allocation after it has been acquired by OpenCL and before it has been released will result in undefined behaviour. Similarly, attempting to access a shared gralloc object from OpenCL before it has been acquired by the OpenCL command queue or after it has been released, will result in undefined behaviour.</p>
+</div>
+</dd>
+<dt class="hdlist1">(Add a new Section 5.16.2, <em>Sharing Memory Objects Created From Gralloc Resources With OpenCL Contexts</em>) </dt>
+<dd>
+<div class="openblock">
+<div class="content">
+<div class="paragraph">
+<p>The function</p>
+</div>
+<div class="listingblock">
+<div class="content">
+<pre class="CodeRay highlight"><code>cl_int CL_API_CALL clEnqueueAcquireGrallocObjectsIMG(
+    cl_command_queue command_queue,
+    cl_uint num_objects,
+    const cl_mem *mem_objects,
+    cl_uint num_events_in_wait_list,
+    const cl_event *event_wait_list,
+    cl_event *event);</code></pre>
+</div>
+</div>
+<div class="paragraph">
+<p>is used to acquire OpenCL memory objects that have been created from gralloc resources. The gralloc objects are acquired by the OpenCL context associated with <em>command_queue</em> and can therefore be used by all command-queues associated with the OpenCL context.</p>
+</div>
+<div class="paragraph">
+<p>OpenCL memory objects created from gralloc resources must be acquired before they can be used by any OpenCL commands queued to a command-queue. If an OpenCL memory object created from a gralloc resource is used while it is not currently acquired by OpenCL, the call attempting to use that OpenCL memory object will return <code>CL_GRALLOC_RESOURCE_NOT_ACQUIRED_IMG</code>.</p>
+</div>
+<div class="paragraph">
+<p>This function has no affect on memory objects in <em>mem_objects</em> that have already been acquired, ignoring them silently. The function returns CL_SUCCESS even if all of the memory objects are ignored in this way.</p>
+</div>
+<div class="paragraph">
+<p><em>command_queue</em> is a valid command-queue.</p>
+</div>
+<div class="paragraph">
+<p><em>num_objects</em> is the number of memory objects to be acquired in <em>mem_objects</em>.</p>
+</div>
+<div class="paragraph">
+<p><em>mem_objects</em> is a pointer to a list of OpenCL memory objects that were created from gralloc resources, within the context associate with <em>command_queue</em>.</p>
+</div>
+<div class="paragraph">
+<p><em>event_wait_list</em> and <em>num_events_in_wait_list</em> specify events that need to complete before this particular command can be executed. If <em>event_wait_list</em> is <code>NULL</code>, then this particular command does not wait on any event to complete. If <em>event_wait_list</em> is <code>NULL</code>, <em>num_events_in_wait_list</em> must be 0. If <em>event_wait_list</em> is not <code>NULL</code>, the list of events pointed to by <em>event_wait_list</em> must be valid and <em>num_events_in_wait_list</em> must be greater than 0. The events specified in <em>event_wait_list</em> act as synchronization points.</p>
+</div>
+<div class="paragraph">
+<p><em>event</em> returns an event object that identifies this particular command and can be used to query or queue a wait for this particular command to complete. <em>event</em> can be NULL in which case it will not be possible for the application to query the status of this command or queue a wait for this command to complete.</p>
+</div>
+<div class="paragraph">
+<p><strong>clEnqueueAcquireGrallocObjectsIMG</strong> returns <code>CL_SUCCESS</code> if the function is executed successfully. If <em>num_objects</em> is 0 and <em>mem_objects</em> is <code>NULL</code> then the function does nothing and returns <code>CL_SUCCESS</code>. Otherwise it returns one of the following errors:</p>
+</div>
+<div class="ulist">
+<ul>
+<li>
+<p><code>CL_INVALID_VALUE</code> if <em>num_objects</em> is zero and <em>mem_objects</em> is not a <code>NULL</code> value or if <em>num_objects</em> 0 and <em>mem_objects</em> is <code>NULL</code>.</p>
+</li>
+<li>
+<p><code>CL_INVALID_MEM_OBJECT</code> if memory objects in <em>mem_objects</em> are not valid OpenCL memory objects in the context associated with <em>command_queue</em>.</p>
+</li>
+<li>
+<p><code>CL_INVALID_GRALLOC_OBJECT_IMG</code> if memory objects in <em>mem_objects</em> have not been created from gralloc resources.</p>
+</li>
+<li>
+<p><code>CL_INVALID_COMMAND_QUEUE</code> if <em>command_queue</em> is not a valid command-queue.</p>
+</li>
+<li>
+<p><code>CL_INVALID_EVENT_WAIT_LIST</code> if <em>event_wait_list</em> is <code>NULL</code> and <em>num_events_in_wait_list</em> 0, or <em>event_wait_list</em> is not <code>NULL</code> and <em>num_events_in_wait_list</em> is 0, or if event objects in <em>event_wait_list</em> are not valid events.</p>
+</li>
+<li>
+<p><code>CL_OUT_OF_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_OF_HOST_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_OPERATION</code> if the queue on which the command is enqueued is associated with a device which does not support <code>cl_img_use_gralloc_ptr</code>.</p>
+</li>
+</ul>
+</div>
+<div class="paragraph">
+<p>The function</p>
+</div>
+<div class="listingblock">
+<div class="content">
+<pre class="CodeRay highlight"><code>cl_int CL_API_CALL clEnqueueReleaseGrallocObjectsIMG(
+    cl_command_queue command_queue,
+    cl_uint num_objects,
+    const cl_mem *mem_objects,
+    cl_uint num_events_in_wait_list,
+    const cl_event *event_wait_list,
+    cl_event *event);</code></pre>
+</div>
+</div>
+<div class="paragraph">
+<p>is used to release OpenCL memory objects that have been created from gralloc resources. The gralloc objects are released by the OpenCL context associated with <em>command_queue</em>.</p>
+</div>
+<div class="paragraph">
+<p>OpenCL memory objects created from gralloc resources which have been acquired by OpenCL must be released by OpenCL before they may be accessed by Android client APIs. Accessing a gralloc resource while its corresponding OpenCL memory object is acquired is in error and will result in undefined behaviour, including but not limited to possible OpenCL errors, data corruption, and program termination.</p>
+</div>
+<div class="paragraph">
+<p><em>command_queue</em> is a valid command-queue.</p>
+</div>
+<div class="paragraph">
+<p><em>mem_objects</em> is a pointer to a list of OpenCL memory objects that were created from gralloc resources, within the context associated with <em>command_queue</em>.</p>
+</div>
+<div class="paragraph">
+<p><em>event_wait_list</em> and <em>num_events_in_wait_list</em> specify events that need to complete before this particular command can be executed. If <em>event_wait_list</em> is <code>NULL</code>, then this particular command does not wait on any event to complete. If <em>event_wait_list</em> is <code>NULL</code>, <em>num_events_in_wait_list</em> must be 0. If <em>event_wait_list</em> is not <code>NULL</code>, the list of events pointed to by <em>event_wait_list</em> must be valid and <em>num_events_in_wait_list</em> must be greater than 0.</p>
+</div>
+<div class="paragraph">
+<p><em>event</em> returns an event object that identifies this particular command and can be used to query or queue a wait for this particular command to complete. <em>event</em> can be NULL in which case it will not be possible for the application to query the status of this command or queue a wait for this command to complete.</p>
+</div>
+<div class="paragraph">
+<p><strong>clEnqueueReleaseGrallocObjectsIMG</strong> returns <code>CL_SUCCESS</code> if the function is executed successfully. If <em>num_objects</em> is 0 and <em>mem_objects</em> is <code>NULL</code> the function does nothing and returns <code>CL_SUCCESS</code>. Otherwise it returns one of the following errors:</p>
+</div>
+<div class="ulist">
+<ul>
+<li>
+<p><code>CL_INVALID_VALUE</code> if <em>num_objects</em> is zero and <em>mem_objects</em> is not a <code>NULL</code> value or if <em>num_objects</em> 0 and <em>mem_objects</em> is <code>NULL</code>.</p>
+</li>
+<li>
+<p><code>CL_INVALID_MEM_OBJECT</code> if memory objects in <em>mem_objects</em> are not valid OpenCL memory objects in the context associated with <em>command_queue</em>.</p>
+</li>
+<li>
+<p><code>CL_INVALID_GRALLOC_OBJECT_IMG</code> if memory objects in <em>mem_objects</em> have not been created from gralloc resources.</p>
+</li>
+<li>
+<p><code>CL_INVALID_COMMAND_QUEUE</code> if <em>command_queue</em> is not a valid command-queue.</p>
+</li>
+<li>
+<p><code>CL_GRALLOC_RESOURCE_NOT_ACQUIRED_IMG</code> if memory objects in <em>mem_objects</em> have not previously acquired with <strong>clEnqueueAcquireGrallocObjectsIMG</strong>, or have been released using <strong>clEnqueueReleaseGrallocObjectsIMG</strong> since the last time that they were acquired.</p>
+</li>
+<li>
+<p><code>CL_INVALID_EVENT_WAIT_LIST</code> if <em>event_wait_list</em> is NULL and <em>num_events_in_wait_list</em> 0, or <em>event_wait_list</em> is not <code>NULL</code> and <em>num_events_in_wait_list</em> is 0, or if event objects in <em>event_wait_list</em> are not valid events.</p>
+</li>
+<li>
+<p><code>CL_OUT_OF_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_OF_HOST_MEMORY</code> if there is a failure to allocate resources required by the OpenCL implementation on the host.</p>
+</li>
+</ul>
+</div>
+</div>
+</div>
+</dd>
+</dl>
+</div>
+</dd>
+</dl>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_issues"><a class="anchor" href="#_issues"></a>Issues</h2>
+<div class="sectionbody">
+<div class="olist arabic">
+<ol class="arabic">
+<li>
+<p>This extension does not support reference counting of the images, so the onus is on the application to behave sensibly and not release the underlying <code>cl_mem</code> object while the gralloc object is still being used.</p>
+<div class="openblock">
+<div class="content">
+<div class="paragraph">
+<p><strong>INFORMATION</strong></p>
+</div>
+</div>
+</div>
+</li>
+<li>
+<p>In order to ensure data integrity, the application is responsible for synchronizing access to shared CL/gralloc objects by their respective APIs. Failure to provide such synchronization may result in race conditions and other undefined behaviour. This may be accomplished by calling <strong>clWaitForEvents</strong> with the event objects returned by any OpenCL commands which use the shared image object or by calling <strong>clFinish</strong>.</p>
+<div class="openblock">
+<div class="content">
+<div class="paragraph">
+<p><strong>INFORMATION</strong></p>
+</div>
+</div>
+</div>
+</li>
+<li>
+<p>Currently restricted to buffer objects.</p>
+<div class="openblock">
+<div class="content">
+<div class="paragraph">
+<p><strong>RESOLVED</strong></p>
+</div>
+</div>
+</div>
+</li>
+</ol>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_revision_history"><a class="anchor" href="#_revision_history"></a>Revision History</h2>
+<div class="sectionbody">
+<table class="tableblock frame-all grid-rows stretch">
+<colgroup>
+<col style="width: 4.7619%;">
+<col style="width: 14.2857%;">
+<col style="width: 14.2857%;">
+<col style="width: 66.6667%;">
+</colgroup>
+<thead>
+<tr>
+<th class="tableblock halign-left valign-top">Version</th>
+<th class="tableblock halign-left valign-top">Date</th>
+<th class="tableblock halign-left valign-top">Author</th>
+<th class="tableblock halign-left valign-top">Changes</th>
+</tr>
+</thead>
+<tbody>
+<tr>
+<td class="tableblock halign-left valign-top"><p class="tableblock">1.0.0</p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">2020-11-10</p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">Jeremy Kemp</p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">Refreshed to AsciiDoc. Updated Contributors. Updated copyright notice. Updated the OpenCL spec which this extension spec is written against. Spelling fixes.</p></td>
+</tr>
+<tr>
+<td class="tableblock halign-left valign-top"><p class="tableblock">0.2.0</p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">2017-10-17</p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">Paul Fradgley</p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">Added support for images.</p></td>
+</tr>
+<tr>
+<td class="tableblock halign-left valign-top"><p class="tableblock">0.1.0</p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">2014-08-08</p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">Robert Quill</p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">Initial revision.</p></td>
+</tr>
+</tbody>
+</table>
+</div>
+</div>
+</div>
+<div id="footer">
+<div id="footer-text">
+Version v3.0.5-12-gc767071<br>
+Last updated 2020-11-10 18:13:57 UTC
+</div>
+</div>
+<style>
+/* Stylesheet for CodeRay to match GitHub theme | MIT License | http://foundation.zurb.com */
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\ No newline at end of file
diff --git a/extensions/img/cl_img_use_gralloc_ptr.txt b/extensions/img/cl_img_use_gralloc_ptr.txt
index deb7f6b..87f3c87 100644
--- a/extensions/img/cl_img_use_gralloc_ptr.txt
+++ b/extensions/img/cl_img_use_gralloc_ptr.txt
@@ -1,337 +1,11 @@
-Name
+The cl_img_use_gralloc_ptr.txt extension is no longer authored in plain text.
 
-    IMG_use_gralloc_ptr
+Please refer to the HTML extension specification instead,
+which may be found here:
 
-Name Strings
+https://www.khronos.org/registry/OpenCL/extensions/img/cl_img_use_gralloc_ptr.html
 
-    cl_img_use_gralloc_ptr
+The asciidoc source for this extension specification may
+be found here:
 
-Contributors
-
-    Robert Quill
-
-Contacts
-
-    Rob Quill, Imagination Technologies (robert.quill 'at' imgtec.com)
-
-Status
-
-    Unapproved.
-
-Version
-
-    Revision: #8, Dec 16, 2013
-
-Number
-
-    OpenCL Extension #45
-
-Dependencies
-
-    Requires OpenCL version 1.2 or later. Android OS is required.
-
-    This extension is written against the wording of the OpenCL 1.2
-    Specification.
-
-Overview
-
-    This extension extends the functionality provided by clCreateBuffer.
-    It allows applications to pass an Android gralloc memory allocation to these functions
-    and thus avoid having to copy data back and forth between the host and the device.
-
-Glossary
-
-    See https://source.android.com/devices/graphics/architecture.html for a
-    description of the Android gralloc API.
-
-New Types
-
-    None
-
-New Procedures and Functions
-
-    cl_int  clEnqueueAcquireGrallocObjectsIMG(cl_command_queue command_queue,
-                                              cl_uint num_objects,
-                                              const cl_mem *mem_objects,
-                                              cl_uint num_events_in_wait_list,
-                                              const cl_event *event_wait_list,
-                                              cl_event *event);
-
-    cl_int clEnqueueReleaseGrallocObjectsIMG(cl_command_queue command_queue,
-                                             cl_uint num_objects,
-                                             const cl_mem *mem_objects,
-                                             cl_uint num_events_in_wait_list,
-                                             const cl_event *event_wait_list,
-                                             cl_event *event);
-
-New Tokens
-
-    New error codes:
-
-    CL_GRALLOC_RESOURCE_NOT_ACQUIRED_IMG 0x40D4
-    CL_INVALID_GRALLOC_OBJECT_IMG         0x40D5
-
-    New command types:
-
-    CL_COMMAND_ACQUIRE_GRALLOC_OBJECTS_IMG    0x40D2
-    CL_COMMAND_RELEASE_GRALLOC_OBJECTS_IMG    0x40D3
-
-
-Additions to Chapter 5 of the OpenCL 1.2 Specification (Memory Objects)
-
-    In Table 5.3, page 69, add the following text as a new row in the table:
-
-    "CL_MEM_USE_GRALLOC_PTR_IMG
-
-      This flag is only valid of <host_ptr> is non-NULL. The value given in
-      <host_ptr> is an Android buffer_handle_t.
-
-       If this flag is specified it means that the application wants the
-      OpenCL implementation to use memory referenced by the buffer_handle_t
-      as the storage bits for the memory object.
-
-      <size> must be 0 if this flag is set. The size of the buffer is determined
-      from the size of the gralloc allocation.
-
-      This flag is only valid when using clCreateBuffer."
-
-    Add the following error conditions to the list after this section:
-
-    clCreateBuffer returns a valid non-zero buffer object and errcode_ret is set
-    to CL_SUCCESS if the buffer object is created successfully. Otherwise, it
-    returns a NULL value with one of the following error values returned in
-    errcode_ret:
-
-    "CL_INVALID_BUUFER_SIZE
-       - if <size> is non-zero and <flags> contains CL_MEM_USE_GRALLOC_PTR_IMG"
-
-    Replace the follow paragraph:
-
-     "CL_INVALID_HOST_PTR if host_ptr is NULL and CL_MEM_USE_HOST_PTR or
-      CL_MEM_COPY_HOST_PTR are set in flags or if host_ptr is not NULL but
-      CL_MEM_COPY_HOST_PTR or CL_MEM_USE_HOST_PTR are not set in flags."
-
-    with:
-
-     "CL_INVALID_HOST_PTR if host_ptr is NULL and CL_MEM_USE_HOST_PTR,
-      CL_MEM_COPY_HOST_PTR or CL_MEM_USE_GRALLOC_PTR_IMG are set in flags
-      or if host_ptr is not NULL but CL_MEM_COPY_HOST_PTR, CL_MEM_USE_HOST_PTR
-      or CL_MEM_USE_GRALLOC_PTR_IMG are not set in flags."
-
-
-    Add:
-
-  "9.19 Sharing OpenCL and gralloc objects
-
-   9.19.1 Synchronizing OpenCL and Android Access to Shared Gralloc Objects
-
-     In order to ensure data integrity, the application is responsible for
-     synchronizing access to shared CL/gralloc objects by their respective APIs.
-     Failure to provide such synchronization may result in race conditions and
-     other undefined behavior including non-portability between implementations.
-
-     Prior to calling clEnqueueAcquireGrallocObjectsIMG, the application must
-     ensure that any pending operations which access the objects specified in
-     mem_objects have completed. This may be accomplished in a portable way by
-     ceasing all client operations on the resource. Implementations may offer
-     more efficient synchronization methods, such as synchronisation primitives
-     or fence operations.
-
-     Similarly, after calling clEnqueueReleaseGrallocObjectsIMG, the application
-     is responsible for ensuring that any pending OpenCL operations which access
-     the objects specified in mem_objects have completed prior to executing
-     subsequent commands in other APIs which reference these objects. This may
-     be accomplished in a portable way by calling clWaitForEvents with the event
-     object returned by clEnqueueReleaseGrallocObjects, or by calling clFinish. As
-     above, some implementations may offer more efficient methods.
-
-     Attempting to access the data store of a gralloc allocation after it has
-     been acquired by OpenCL and before it has been released will result in
-     undefined behavior. Similarly, attempting to access a shared gralloc
-     object from OpenCL before it has been acquired by the OpenCL command queue
-     or after it has been released, will result in undefined behavior.
-
-
-  9.19.2 Sharing memory objects created from gralloc resources with OpenCL contexts
-
-    The function
-
-    cl_int    clEnqueueAcquireGrallocObjectsIMG(
-        cl_command_queue command_queue,
-        cl_uint num_objects,
-        const cl_mem *mem_objects,
-        cl_uint num_events_in_wait_list,
-        const cl_event *event_wait_list,
-        cl_event *event)
-
-    is used to acquire OpenCL memory objects that have been created from
-    gralloc resources. The gralloc objects are acquired by the OpenCL context
-    associated with <command_queue> and can therefore be used by all
-    command-queues associated with the OpenCL context.
-
-    OpenCL memory objects created from gralloc resources must be acquired
-    before they can be used by any OpenCL commands queued to a
-    command-queue. If an OpenCL memory object created from a gralloc
-    resource is used while it is not currently acquired by OpenCL, the
-    call attempting to use that OpenCL memory object will return
-    CL_GRALLOC_RESOURCE_NOT_ACQUIRED_IMG.
-
-    This function has no affect on memory objects in <mem_objects>
-    that have already been acquired, ignoring them silently. The
-    function returns CL_SUCCESS even if all of the memory objects are
-    ignored in this way.
-
-    <command_queue> is a valid command-queue.
-
-    <num_objects> is the number of memory objects to be acquired in
-    <mem_objects>.
-
-    <mem_objects> is a pointer to a list of OpenCL memory objects that
-    were created from gralloc resources, within the context associate with
-    <command_queue>.
-
-    <event_wait_list> and <num_events_in_wait_list> specify events that
-    need to complete before this particular command can be executed. If
-    <event_wait_list> is NULL, then this particular command does not
-    wait on any event to complete. If <event_wait_list> is NULL,
-    <num_events_in_wait_list> must be 0. If <event_wait_list> is not
-    NULL, the list of events pointed to by <event_wait_list> must be
-    valid and <num_events_in_wait_list> must be greater than 0. The
-    events specified in <event_wait_list> act as synchronization points.
-
-    <event> returns an event object that identifies this particular
-    command and can be used to query or queue a wait for this
-    particular command to complete. <event> can be NULL in which case it
-    will not be possible for the application to query the status of this
-    command or queue a wait for this command to complete.
-
-    clEnqueueAcquireGrallocObjectsIMG returns CL_SUCCESS if the function is
-    executed successfully. If <num_objects> is 0 and <mem_objects> is
-    NULL then the function does nothing and returns CL_SUCCESS. Otherwise it
-    returns one of the following errors:
-
-      * CL_INVALID_VALUE if <num_objects> is zero and <mem_objects> is
-    not a NULL value or if <num_objects> > 0 and <mem_objects> is
-    NULL.
-
-      * CL_INVALID_MEM_OBJECT if memory objects in <mem_objects> are not
-    valid OpenCL memory objects in the context associated with
-    <command_queue>.
-
-      * CL_INVALID_GRALLOC_OBJECT_IMG if memory objects in <mem_objects> have
-    not been created from gralloc resources.
-
-      * CL_INVALID_COMMAND_QUEUE if <command_queue> is not a valid
-    command-queue.
-
-      * CL_INVALID_EVENT_WAIT_LIST if <event_wait_list> is NULL and
-    <num_events_in_wait_list> > 0, or <event_wait_list> is not NULL
-    and <num_events_in_wait_list> is 0, or if event objects in
-    <event_wait_list> are not valid events.
-
-      * CL_OUT_OF_RESOURCES if there is a failure to allocate resources
-    required by the    OpenCL implementation on the device.
-
-      * CL_OUT_OF_HOST_MEMORY if there is a failure to allocate resources
-    required by the OpenCL implementation on the host.
-
-      * CL_INVALID_OPERATION if the queue on which the command is enqueued
-    is associated with a device which does not support cl_img_use_gralloc_ptr.
-
-    The function
-
-    cl_int clEnqueueReleaseGrallocObjectsIMG(
-        cl_command_queue command_queue,
-        cl_uint num_objects,
-        const cl_mem *mem_objects,
-        cl_uint num_events_in_wait_list,
-        const cl_event *event_wait_list,
-        cl_event *event)
-
-    is used to release OpenCL memory objects that have been created from
-    gralloc resources. The gralloc objects are released by the OpenCL context
-    associated with <command_queue>.
-
-    OpenCL memory objects created from gralloc resources which have been
-    acquired by OpenCL must be released by OpenCL before they may be
-    accessed by Android client APIs. Accessing a gralloc resource
-    while its corresponding OpenCL memory object is acquired is in error
-    and will result in undefined behavior, including but not limited to
-    possible OpenCL errors, data corruption, and program termination.
-
-    <command_queue> is a valid command-queue.
-
-    <mem_objects> is a pointer to a list of OpenCL memory objects that
-    were created from gralloc resources, within the context associated with
-    <command_queue>.
-
-    <event_wait_list> and <num_events_in_wait_list> specify events that
-    need to complete before this particular command can be executed. If
-    <event_wait_list> is NULL, then this particular command does not
-    wait on any event to complete. If <event_wait_list> is NULL,
-    <num_events_in_wait_list> must be 0. If <event_wait_list> is not
-    NULL, the list of events pointed to by <event_wait_list> must be
-    valid and <num_events_in_wait_list> must be greater than 0.
-
-    <event> returns an event object that identifies this particular
-    command and can be used to query or queue a wait for this
-    particular command to complete. <event> can be NULL in which case it
-    will not be possible for the application to query the status of this
-    command or queue a wait for this command to complete.
-
-    clEnqueueReleaseGrallocObjectsIMG returns CL_SUCCESS if the function
-    is executed successfully. If <num_objects> is 0 and <mem_objects> is
-    NULL the function does nothing and returns CL_SUCCESS. Otherwise it
-    returns one of the following errors:
-
-      * CL_INVALID_VALUE if <num_objects> is zero and <mem_objects> is
-    not a NULL value or if <num_objects> > 0 and <mem_objects> is
-    NULL.
-
-      * CL_INVALID_MEM_OBJECT if memory objects in <mem_objects> are not
-    valid OpenCL memory objects in the context associated with
-    <command_queue>.
-
-      * CL_INVALID_GRALLOC_OBJECT_IMG if memory objects in <mem_objects> have
-    not been created from gralloc resources.
-
-      * CL_INVALID_COMMAND_QUEUE if <command_queue> is not a valid
-    command-queue.
-
-      * CL_GRALLOC_RESOURCE_NOT_ACQUIRED_IMG if memory objects in
-    <mem_objects> have not previously acquired with
-    clEnqueueAcquireGrallocObjectsIMG, or have been released using
-    clEnqueueReleaseGrallocObjectsIMG since the last time that they were
-    acquired.
-
-      * CL_INVALID_EVENT_WAIT_LIST if <event_wait_list> is NULL and
-    <num_events_in_wait_list> > 0, or <event_wait_list> is not NULL
-    and <num_events_in_wait_list> is 0, or if event objects in
-    <event_wait_list> are not valid events.
-
-      * CL_OUT_OF_RESOURCES if there is a failure to allocate resources required by the
-    OpenCL implementation on the device.
-
-      * CL_OUT_OF_HOST_MEMORY if there is a failure to allocate resources
-    required by the OpenCL implementation on the host.
-    "
-
-Issues
-
-    1.  This extension does not support reference counting
-        of the images, so the onus is on the application to behave
-        sensibly and not release the underlying cl_mem object while the
-        gralloc object is still being used.
-
-    2.  In order to ensure data integrity, the application is responsible for
-        synchronizing access to shared CL/gralloc objects by their respective
-        APIs. Failure to provide such synchronization may result in race
-        conditions and other undefined behavior. This may be accomplished by
-        calling clWaitForEvents with the event objects returned by any OpenCL
-        commands which use the shared image object or by calling clFinish.
-
-    3.  Currently restricted to buffer objects.
-
-Revision History
-
-#1    - Initial revision.
+https://github.com/KhronosGroup/OpenCL-Docs/blob/master/extensions/cl_img_use_gralloc_ptr.asciidoc
\ No newline at end of file
diff --git a/extensions/img/cl_img_yuv_image.html b/extensions/img/cl_img_yuv_image.html
new file mode 100644
index 0000000..1e3a6e0
--- /dev/null
+++ b/extensions/img/cl_img_yuv_image.html
@@ -0,0 +1,1103 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
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+b.button:after { content: "]"; padding: 0 2px 0 3px; }
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+#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 #dddddd; }
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+#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: #333333; }
+#header .details br + span#revremark:before { content: "\00a0|\00a0"; }
+#header #revnumber { text-transform: capitalize; }
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+  body.toc2 { padding-left: 15em; padding-right: 0; }
+  #toc.toc2 { margin-top: 0 !important; background-color: white; position: fixed; width: 15em; left: 0; top: 0; border-right: 1px solid #dddddd; border-top-width: 0 !important; border-bottom-width: 0 !important; z-index: 1000; padding: 1.25em 1em; height: 100%; overflow: auto; }
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+#content #toc > :last-child { margin-bottom: 0; }
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+<body class="book">
+<div id="header">
+<h1>cl_img_yuv_image</h1>
+<div class="details">
+<span id="revnumber">version v3.0.5-12-gc767071,</span>
+<span id="revdate">Mon, 23 Nov 2020 10:54:26 +0000</span>
+<br><span id="revremark">from git branch: master commit: c767071fb1d0c1052fa039843d211fb795c2409c</span>
+</div>
+</div>
+<div id="content">
+<div class="sect1">
+<h2 id="_name_strings"><a class="anchor" href="#_name_strings"></a>Name Strings</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p><code>cl_img_yuv_image</code></p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_contact"><a class="anchor" href="#_contact"></a>Contact</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>Imagination Technologies Developer Forum:<br>
+<a href="https://forums.imgtec.com/" class="bare">https://forums.imgtec.com/</a></p>
+</div>
+<div class="paragraph">
+<p>Jeremy Kemp, Imagination Technologies (Jeremy.Kemp 'at' imgtec.com)</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_contributors"><a class="anchor" href="#_contributors"></a>Contributors</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>James Laverack, Imagination Technologies.<br>
+Robert Quill, Imagination Technologies.<br>
+Jeremy Kemp, Imagination Technologies.</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_notice"><a class="anchor" href="#_notice"></a>Notice</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>Copyright (c) 2020 Imagination Technologies Ltd. All Rights Reserved.</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_status"><a class="anchor" href="#_status"></a>Status</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>Shipping</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_version"><a class="anchor" href="#_version"></a>Version</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>Built On: 2020-11-10<br>
+Version: 1.0.0</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_dependencies"><a class="anchor" href="#_dependencies"></a>Dependencies</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>Requires OpenCL version 1.2 or later.</p>
+</div>
+<div class="paragraph">
+<p>This extension is written against the wording of the OpenCL 3.0 Specification.</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_overview"><a class="anchor" href="#_overview"></a>Overview</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>This extension provides new image formats to read YUV images, such as those provided by cameras on mobile devices.</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_new_api_enums"><a class="anchor" href="#_new_api_enums"></a>New API Enums</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>New values accepted for the <code>image_channel_order</code> member in <code>cl_image_format</code>:</p>
+</div>
+<div class="listingblock">
+<div class="content">
+<pre class="CodeRay highlight"><code data-lang="c">CL_NV21_IMG <span class="hex">0x40D0</span>
+CL_YV12_IMG <span class="hex">0x40D1</span></code></pre>
+</div>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_modifications_to_the_opencl_api_specification"><a class="anchor" href="#_modifications_to_the_opencl_api_specification"></a>Modifications to the OpenCL API Specification</h2>
+<div class="sectionbody">
+<div class="dlist">
+<dl>
+<dt class="hdlist1">(Modify Section 5.3, <strong>Image Objects</strong>) </dt>
+<dd>
+<div class="openblock">
+<div class="content">
+<div class="dlist">
+<dl>
+<dt class="hdlist1">(Add the following to return conditions to Section 5.3.1, <em>Creating Image Objects</em>) </dt>
+<dd>
+<div class="ulist">
+<ul>
+<li>
+<p><code>CL_INVALID_IMAGE_SIZE</code> if the <em>image_channel_order</em> is <code>CL_NV21_IMG</code> or <code>CL_YV12_IMG</code> and image dimensions specified in <em>image_desc</em> are not supported for all devices in <em>context</em>.</p>
+</li>
+<li>
+<p><code>CL_INVALID_VALUE</code> if the <em>image_channel_order</em> is <code>CL_NV21_IMG</code> or <code>CL_YV12_IMG</code> and the <em>image_desc</em> is not <code>CL_MEM_OBJECT_IMAGE2D</code>.</p>
+</li>
+</ul>
+</div>
+</dd>
+<dt class="hdlist1">(Add the following to Table 16, <em>Image Format Descriptor</em>) </dt>
+</dl>
+</div>
+<table class="tableblock frame-all grid-all stretch">
+<colgroup>
+<col style="width: 20%;">
+<col style="width: 80%;">
+</colgroup>
+<thead>
+<tr>
+<th class="tableblock halign-left valign-top">Image Channel Order</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_NV21_IMG, CL_YV12_IMG</code></p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">This format can only be used if <em>image_channel_data_type</em> is <code>CL_UNORM_INT8</code>.</p></td>
+</tr>
+</tbody>
+</table>
+<div class="dlist">
+<dl>
+<dt class="hdlist1">(Add the following to return conditions to Section 5.3.3, <em>Reading, Writing and Copying Image Objects</em>) </dt>
+<dd>
+<div class="ulist">
+<ul>
+<li>
+<p><code>CL_INVALID_VALUE</code> if <em>image_channel_order</em> is <code>CL_NV21_IMG</code> or <code>CL_YV12_IMG</code> and the region is not the full size of the image and/or the origin is not (0, 0).</p>
+</li>
+</ul>
+</div>
+</dd>
+<dt class="hdlist1">(Add the following to return conditions to Section 5.3.4, <em>Filling Image Objects</em>) </dt>
+<dd>
+<div class="ulist">
+<ul>
+<li>
+<p><code>CL_IMAGE_FORMAT_NOT_SUPPORTED</code> if <em>image_channel_order</em> is <code>CL_NV21_IMG</code> or <code>CL_YV12_IMG</code>.</p>
+</li>
+</ul>
+</div>
+</dd>
+<dt class="hdlist1">(Add the following to return conditions to Section 5.3.6, <em>Mapping Image Objects</em>) </dt>
+<dd>
+<div class="ulist">
+<ul>
+<li>
+<p><code>CL_INVALID_VALUE</code> if <em>image_channel_order</em> is <code>CL_NV21_IMG</code> or <code>CL_YV12_IMG</code> and the region is not the full size of the image and/or the origin is not (0, 0).</p>
+</li>
+</ul>
+</div>
+</dd>
+</dl>
+</div>
+</div>
+</div>
+</dd>
+</dl>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_modifications_to_the_opencl_c_specification"><a class="anchor" href="#_modifications_to_the_opencl_c_specification"></a>Modifications to the OpenCL C Specification</h2>
+<div class="sectionbody">
+<div class="dlist">
+<dl>
+<dt class="hdlist1">(Modify Section 8.2, <em>Addressing and Filter Modes</em>) </dt>
+<dd>
+<div class="dlist">
+<dl>
+<dt class="hdlist1">(Replace the following paragraph) </dt>
+<dd>
+<p>If the sampler is specified as using unnormalized coordinates (floating-point or integer coordinates), filter mode set to <code>CLK_FILTER_NEAREST</code> and addressing mode set to one of the following modes - <code>CLK_ADDRESS_NONE</code>, <code>CLK_ADDRESS_CLAMP_TO_EDGE</code> or <code>CLK_ADDRESS_CLAMP</code>, the location of the image element in the image given by (<em>i,j,k</em>) will be computed without any loss of precision.</p>
+<div class="paragraph">
+<p>with</p>
+</div>
+<div class="paragraph">
+<p>If the sampler is specified as using unnormalized coordinates (floating-point or integer coordinates), filter mode set to <code>CLK_FILTER_NEAREST</code> and addressing mode set to one of the following modes - <code>CLK_ADDRESS_NONE</code>, <code>CLK_ADDRESS_CLAMP_TO_EDGE</code> or <code>CLK_ADDRESS_CLAMP</code>, and <em>image_channel_order</em> is not <code>CL_NV21_IMG</code> or <code>CL_YV12_IMG</code>, the location of the image element in the image given by (<em>i,j,k</em>) will be computed without any loss of precision.</p>
+</div>
+</dd>
+</dl>
+</div>
+</dd>
+</dl>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_revision_history"><a class="anchor" href="#_revision_history"></a>Revision History</h2>
+<div class="sectionbody">
+<table class="tableblock frame-all grid-rows stretch">
+<colgroup>
+<col style="width: 4.7619%;">
+<col style="width: 14.2857%;">
+<col style="width: 14.2857%;">
+<col style="width: 66.6667%;">
+</colgroup>
+<thead>
+<tr>
+<th class="tableblock halign-left valign-top">Version</th>
+<th class="tableblock halign-left valign-top">Date</th>
+<th class="tableblock halign-left valign-top">Author</th>
+<th class="tableblock halign-left valign-top">Changes</th>
+</tr>
+</thead>
+<tbody>
+<tr>
+<td class="tableblock halign-left valign-top"><p class="tableblock">1.0.0</p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">2020-11-10</p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">Jeremy Kemp</p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">Refreshed to AsciiDoc. Updated Contributors. Updated copyright notice. Updated the OpenCL spec which this extension spec is written against.</p></td>
+</tr>
+<tr>
+<td class="tableblock halign-left valign-top"><p class="tableblock">0.3.0</p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">2018-05-23</p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">GitHub User H1Gdev</p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">Remove duplicate 'for' in cl_img_yuv_image.txt.</p></td>
+</tr>
+<tr>
+<td class="tableblock halign-left valign-top"><p class="tableblock">0.2.0</p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">2017-10-17</p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">James Laverack &amp; Robert Quill</p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">Replace CL_NV21 and CL_YV12 with CL_NV21_IMG and CL_YV12_IMG respectively.</p></td>
+</tr>
+<tr>
+<td class="tableblock halign-left valign-top"><p class="tableblock">0.1.0</p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">2014-05-02</p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">James Laverack</p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">Initial revision.</p></td>
+</tr>
+</tbody>
+</table>
+</div>
+</div>
+</div>
+<div id="footer">
+<div id="footer-text">
+Version v3.0.5-12-gc767071<br>
+Last updated 2020-11-10 18:13:57 UTC
+</div>
+</div>
+<style>
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\ No newline at end of file
diff --git a/extensions/img/cl_img_yuv_image.txt b/extensions/img/cl_img_yuv_image.txt
index a455d19..62edad3 100644
--- a/extensions/img/cl_img_yuv_image.txt
+++ b/extensions/img/cl_img_yuv_image.txt
@@ -1,103 +1,11 @@
-Name
+The cl_img_yuv_image.txt extension is no longer authored in plain text.
 
-    IMG_yuv_image
+Please refer to the HTML extension specification instead,
+which may be found here:
 
-Name Strings
+https://www.khronos.org/registry/OpenCL/extensions/img/cl_img_yuv_image.html
 
-    cl_img_yuv_image
+The asciidoc source for this extension specification may
+be found here:
 
-Contributors
-
-    James Laverack
-    Rob Quill
-
-Contacts
-
-    James Laverack, Imagination Technoligies (james.laverack 'at' imgtec.com)
-    Rob Quill, Imagination Technoligies (robert.quill 'at' imgtec.com)
-
-Status
-
-    Approved.
-
-Version
-
-    Revision: #3, May 23th, 2018
-
-Number
-
-    OpenCL Extension #46
-
-Dependencies
-
-    Requires OpenCL version 1.2 or later.
-
-    This extension is written against the wording of the OpenCL 1.2
-    Specification.
-
-Overview
-
-    This extension provides new image formats to read YUV images, such
-    as those provided by cameras on mobile devices.
-
-New Tokens
-
-    New image channel order enums:
-
-    CL_NV21_IMG                         0x40D0
-    CL_YV12_IMG                         0x40D1
-
-Additions to Chapter 5 of the OpenCL 1.2 Specification (Image Objects)
-
-    In Section 5.3.1, page 93, append the following to the list of error
-    conditions for clCreateImage:
-
-    "CL_INVALID_IMAGE_SIZE if the image_channel_order is CL_NV21_IMG or CL_YV12_IMG
-     and image dimensions specified in image_desc are not supported for
-     all devices in context."
-
-    "CL_INVALID_VALUE if the image_channel_order is CL_NV21_IMG or CL_YV12_IMG and
-     the image_desc is not CL_MEM_OBJECT_IMAGE2D."
-
-    In Section 5.3.1.1, page 94, add the following to Table 5.6:
-
-    "CL_NV21_IMG, CL_YV12_IMG. This format can only be used if channel
-     data type = CL_UNORM_INT8"
-
-    In Section 5.3.3, page 102, append the following to the list of error
-    conditions for clEnqueueReadImage and clEnququWriteImage:
-
-    "CL_INVALID_VALUE if image_channel_order is CL_NV21_IMG or CL_YV12_IMG and the region
-     is not the full size of the image and/or the origin is not (0, 0)."
-
-    In Section 5.3.4, page 108, append the following to the list of error
-    conditions for clEnqueueFillImage:
-
-    "CL_IMAGE_FORMAT_NOT_SUPPORTED if image_channel_order is CL_NV21_IMG or
-     CL_YV12_IMG."
-
-    In Section 5.3.6, page 116, append the following to the list of error
-    conditions for clEnqueueMapImage:
-
-    "CL_INVALID_VALUE if image_channel_order is CL_NV21_IMG or CL_YV12_IMG and the region
-     is not the full size of the image and/or the origin is not (0, 0)."
-
-Additions to Chapter 8 of the OpenCL 1.2 Specification (Addressing and Filter Modes)
-
-    In Section 8.2, page 335, replace the first paragraph of the Note with the following
-    text:
-
-    "If the sampler is specified as using unnormalized coordinates (floating-point or integer
-     coordinates), filter mode set to CLK_FILTER_NEAREST and addressing mode set to one of the
-     following modes - CLK_ADDRESS_NONE, CLK_ADDRESS_CLAMP_TO_EDGE or
-     CLK_ADDRESS_CLAMP, and image_channel_order is not CL_NV21_IMG or CL_YV12_IMG then the location
-     of the image element in the image given by (i, j, k) in section 8.2 will be computed
-     without any loss of precision."
-
-Revision History
-
-#1    - Initial revision.
-
-#2    - Replace CL_NV21 and CL_YV12 with CL_NV21_IMG and CL_YV12_IMG respectively.
-
-#3    - Remove duplicate 'for'.
+https://github.com/KhronosGroup/OpenCL-Docs/blob/master/extensions/cl_img_yuv_image.asciidoc
\ No newline at end of file
diff --git a/extensions/registry.py b/extensions/registry.py
index 55ebc48..3ce9ddd 100644
--- a/extensions/registry.py
+++ b/extensions/registry.py
@@ -114,17 +114,27 @@
     'cl_img_cached_allocations' : {
         'number' : 44,
         'flags' : { 'public' },
-        'url' : 'extensions/img/cl_img_cached_allocations.txt',
+        'url' : 'extensions/img/cl_img_cached_allocations.html',
+    },
+    'cl_img_generate_mipmap' : {
+        'number' : 66,
+        'flags' : { 'public' },
+        'url' : 'extensions/img/cl_img_generate_mipmap.html',
+    },
+    'cl_img_mem_properties' : {
+        'number' : 67,
+        'flags' : { 'public' },
+        'url' : 'extensions/img/cl_img_mem_properties.html',
     },
     'cl_img_use_gralloc_ptr' : {
         'number' : 45,
         'flags' : { 'public' },
-        'url' : 'extensions/img/cl_img_use_gralloc_ptr.txt',
+        'url' : 'extensions/img/cl_img_use_gralloc_ptr.html',
     },
     'cl_img_yuv_image' : {
         'number' : 46,
         'flags' : { 'public' },
-        'url' : 'extensions/img/cl_img_yuv_image.txt',
+        'url' : 'extensions/img/cl_img_yuv_image.html',
     },
     'cl_intel_accelerator' : {
         'number' : 24,