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    <li> <a href="OES_texture_float/">OES_texture_float</a>
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(-)doc/spec/extensions/OES_standard_derivatives/index.html (+80 lines)
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"
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        "http://www.w3.org/TR/html4/strict.dtd">
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<html lang="en">
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<head>
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    <meta http-equiv="content-type" content="text/html; charset=utf-8">
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    <title>WebGL OES_standard_derivatives Extension Specification</title>
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    <link rel="stylesheet" type="text/css" href="../../webgl-extension.css" />
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    <link rel="stylesheet" type="text/css" href="../../default.css" />
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    <script src="../../jquery-1.3.2.min.js" type="text/javascript"></script>
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</head>
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    <!--begin-logo-->
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    <div>
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      <a href="http://webgl.org/"><img alt=WebGL height=72 src="../../WebGL-Logo.png" width=156></a>
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      <div class=right>
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	<a href="http://khronos.org/"><img alt=Khronos height=60 src="../../KhronosGroup-3D.png" width=220></a>
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      </div>
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    <!--end-logo-->
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    <h1>WebGL OES_standard_derivatives Extension Specification</h1>  
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    <h2 class="no-toc">Name</h2>
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    <p> OES_standard_derivatives </p>
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    <h2 class="no-toc">Contact</h2>
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    <p> <a href="https://www.khronos.org/webgl/public-mailing-list/">WebGL working group</a> (public_webgl 'at' khronos.org) </p>
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    <h2 class="no-toc">Contributors</h2>
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    <p> Members of the WebGL working group </p>
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    <h2 class="no-toc">Version</h2>
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    <p> Last modified date: January 13, 2010 <br>
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        Revision: 1
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    </p>
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    <h2 class="no-toc">Number</h2>
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    <p> WebGL extension #4 </p>
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    <h2 class="no-toc">Dependencies</h2>
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    <p> Written against the WebGL API 1.0 specification. </p>
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    <h2 class="no-toc">Overview</h2>
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    <p>
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      This extension exposes the
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      <a href="http://www.khronos.org/registry/gles/extensions/OES/OES_standard_derivatives.txt">OES_standard_derivatives</a>
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      functionality to WebGL. There are no WebGL-specific behavioral changes.  Consult the above
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      extension for all documentation, issues, and new functions and enumerants.
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    </p>
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    <p>
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      When this extension is enabled:
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      <ul>
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      <li> The <code>hint</code> entry point accepts <code>FRAGMENT_SHADER_DERIVATIVE_HINT_OES</code>
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           as a target.
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      <li> The built-in functions <code>dFdx()</code>, <code>dFdy()</code>, and <code>fwidth()</code>
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           are available in fragment shaders.
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      </ul>
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    </p>
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    <h2 class="no-toc">IDL</h2>
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    <p>
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<pre class="idl">
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module webgl {
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interface OES_standard_derivatives {
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    const GLenum FRAGMENT_SHADER_DERIVATIVE_HINT_OES = 0x8B8B;
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};
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};
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</pre>
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    </p>
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    <h2 class="no-toc">Revision History</h2>
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    <p>
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      Revision 1, 2010/01/13
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      <ul>
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      <li> Initial revision.
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      </ul>
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    </p>
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</body>
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</html>

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