extension.xml - mozsearch

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<?xml version="1.0"?>

<ratified href="OES_standard_derivatives/">

  <name>OES_standard_derivatives</name>

  <contact>

    <a href="https://www.khronos.org/webgl/public-mailing-list/">WebGL working group</a> (public_webgl 'at' khronos.org)

  </contact>

  <contributors>

    <contributor>Members of the WebGL working group</contributor>

  </contributors>

  <number>4</number>

  <depends>

    <api version="1.0"/>

    <core version="2.0">

      <glsl version="300 es"/>

    </core>

  </depends>

  <overview>

    <mirrors href="http://www.khronos.org/registry/gles/extensions/OES/OES_standard_derivatives.txt" name="OES_standard_derivatives" />

    <features>

      <feature>

        The <code>hint</code> entry point accepts <code>FRAGMENT_SHADER_DERIVATIVE_HINT_OES</code>

           as a target and the <code>getParameter</code> entry point accepts it as a pname.

      </feature>

      <glsl extname="GL_OES_standard_derivatives">

        <stage type="fragment"/>

        <function name="dFdx" type="genType">

          <param type="genType" />

        </function>

        <function name="dFdy" type="genType">

          <param type="genType" />

        </function>

        <function name="fwidth" type="genType">

          <param type="genType" />

        </function>

      </glsl>

    </features>

  </overview>

  <idl xml:space="preserve">

[NoInterfaceObject]

interface OES_standard_derivatives {

    const GLenum FRAGMENT_SHADER_DERIVATIVE_HINT_OES = 0x8B8B;

};

  </idl>

  <history>

    <revision date="2010/01/13">

      <change>Initial revision.</change>

    </revision>

    <revision date="2011/12/07">

      <change>Added <code>genType</code> argument and return type to function declarations.</change>

    </revision>

    <revision date="2012/01/03">

      <change>Removed webgl module per changes to Web IDL spec.</change>

    </revision>

    <revision date="2013/05/15">

      <change>Ratified by Khronos Board of Promoters.</change>

    </revision>

    <revision date="2014/07/15">

      <change>Added NoInterfaceObject extended attribute.</change>

    </revision>

  </history>

</ratified>