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| 1 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" | |
| 2 "http://www.w3.org/TR/html4/strict.dtd"> | |
| 3 <html lang="en"> | |
| 4 <head> | |
| 5 <meta http-equiv="content-type" content="text/html; charset=utf-8"> | |
| 6 <title>WebGL Extension Registry</title> | |
| 7 <link rel="stylesheet" type="text/css" href="../resources/Khronos-WD.css" /> | |
| 8 <link rel="stylesheet" type="text/css" href="../resources/default.css" /> | |
| 9 <script src="../resources/jquery-1.3.2.min.js" type="text/javascript"></scri
pt> | |
| 10 <script src="../resources/generateTOC.js" type="text/javascript"></script> | |
| 11 </head> | |
| 12 <body onload="generateTOC(document.getElementById('toc'))"> | |
| 13 <!--begin-logo--> | |
| 14 <div class=head> | |
| 15 <p> | |
| 16 <a href="http://khronos.org/"> | |
| 17 <img alt=Khronos height=60 src="../resources/KhronosGroup-3D.png
" width=220> | |
| 18 </a> | |
| 19 </p> | |
| 20 </div> | |
| 21 <div class=head> | |
| 22 <p> | |
| 23 <a href="http://webgl.org/"> | |
| 24 <img alt=WebGL height=72 src="../resources/WebGL-Logo.png" width
=156> | |
| 25 </a> | |
| 26 </p> | |
| 27 </div> | |
| 28 <!--end-logo--> | |
| 29 | |
| 30 <h1>WebGL Extension Registry</h1> | |
| 31 | |
| 32 <h2 class="no-toc">Overview</h2> | |
| 33 <p> | |
| 34 The WebGL extension registry contains specifications for extensions to t
he | |
| 35 core <a href="../specs/latest/">WebGL API</a>. Most of these extensions
are incorporated | |
| 36 directly from the <a href="http://www.khronos.org/registry/gles/">OpenGL
ES</a> | |
| 37 or <a href="http://www.opengl.org/registry/">OpenGL</a> extension regist
ries, and refer to | |
| 38 those extensions for their behavioral definition. Because WebGL extensio
ns are specified as | |
| 39 Web IDL interfaces, each specification also includes the IDL to which ea
ch implementation | |
| 40 will comply. | |
| 41 </p> | |
| 42 <p> | |
| 43 An <a href="template/">extension template</a> is available for the submi
ssion of | |
| 44 new proposed extensions. New extension proposals should be emailed to th
e | |
| 45 <a href="https://www.khronos.org/webgl/public-mailing-list/">public WebG
L mailing list</a>. | |
| 46 When writing a new extension specification, it may be helpful to check o
ut the entire public | |
| 47 WebGL repository: | |
| 48 <pre> | |
| 49 svn checkout https://cvs.khronos.org/svn/repos/registry/trunk/public/webgl | |
| 50 </pre> | |
| 51 The extension registry files are located under <code>extensions/</code>. | |
| 52 </p> | |
| 53 <p> | |
| 54 Each extension object is fetched from | |
| 55 the <a href="../specs/latest/index.html#WEBGLRENDERINGCONTEXT">WebGLRend
eringContext</a> by passing | |
| 56 the name of the extension to the <code>getExtension</code> method, | |
| 57 i.e.: <code>context.getExtension("OES_texture_float")</code>. | |
| 58 </p> | |
| 59 | |
| 60 <h2 class="no-toc">Naming conventions</h2> | |
| 61 | |
| 62 <p> | |
| 63 WebGL API extensions may derive from many sources, and the naming of eac
h extension reflects | |
| 64 its origin and intent. | |
| 65 | |
| 66 <ul> | |
| 67 | |
| 68 <li><code>ARB</code>, <code>OES</code> and <code>KHR</code> tags should
be used for | |
| 69 mirroring functionality from OpenGL ES or OpenGL API extensions approved
by the respective | |
| 70 architecture review boards. <code>EXT_</code> and GPU vendor tags should
be used for | |
| 71 mirroring other OpenGL ES or OpenGL API extensions. If only small differ
ences in behavior | |
| 72 compared to OpenGL ES or OpenGL are specified for a given extension, the
original tag should | |
| 73 be maintained. | |
| 74 | |
| 75 <li>The <code>WEBGL</code> tag should be used for WebGL-specific extensi
ons which are | |
| 76 intended to be compatible with multiple web browsers. It should also be
used for extensions | |
| 77 which originated with the OpenGL ES or OpenGL APIs, but whose behavior h
as been | |
| 78 significantly altered. | |
| 79 | |
| 80 <li>Browser vendor specific tags should be used for WebGL-specific exten
sions that are | |
| 81 intended to run only on a particular browser. It is recommended to avoid
such extensions, | |
| 82 and instead specify them with the <code>WEBGL</code> tag. | |
| 83 | |
| 84 </ul> | |
| 85 | |
| 86 </p> | |
| 87 | |
| 88 <h2 class="no-toc">WebGL Extensions By Number</h2> | |
| 89 | |
| 90 <!-- | |
| 91 Planned extensions from a recent F2F: | |
| 92 | |
| 93 OES_texture_float | |
| 94 OES_texture_half_float | |
| 95 OES_depth24 | |
| 96 | |
| 97 # require shader validator changes | |
| 98 OES_standard_derivatives | |
| 99 EXT_shader_texture_lod | |
| 100 | |
| 101 # desktop only | |
| 102 OES_texture_float_linear | |
| 103 OES_texture_half_float_linear | |
| 104 | |
| 105 # future core | |
| 106 OES_vertex_array_object -- same as IMG_vertex_array_object? | |
| 107 | |
| 108 OES_rgb8_rgba8 | |
| 109 OES_depth_texture - problematic, ARB/EXT have slightly different semantics; migh
t need to define WEBGL versions | |
| 110 --> | |
| 111 | |
| 112 <ol> | |
| 113 <li> <a href="OES_texture_float/">OES_texture_float</a> | |
| 114 <li> <a href="OES_texture_half_float/">OES_texture_half_float</a> | |
| 115 <li> <a href="WEBKIT_lose_context/">WEBKIT_lose_context</a> | |
| 116 <li> <a href="OES_standard_derivatives/">OES_standard_derivatives</a> | |
| 117 <li> <a href="OES_vertex_array_object/">OES_vertex_array_object</a> | |
| 118 </ol> | |
| 119 | |
| 120 </body> | |
| 121 </html> | |
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Chromium Code Reviews
Issue 9360034:
Remove everthing except conformance tests in the deps/third_party/webgl (Closed)
Base URL: svn://chrome-svn/chrome/trunk/deps/