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<?xml version="1.0" encoding="UTF-8"?>

<extension href="EXT_sRGB/">

  <name>EXT_sRGB</name>

  <contact> <a href="https://www.khronos.org/webgl/public-mailing-list/">WebGL

  working group</a> (public_webgl 'at' khronos.org) </contact>

  <contributors>

    <contributor>Florian Boesch (pyalot 'at' gmail.com)</contributor>

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

  </contributors>

  <number>17</number>

  <depends>

    <api version="1.0"/>

    <core version="2.0">

      <addendum>Additional format restrictions apply for CopyTexImage2D</addendum>

    </core>

  </depends>

  <overview>

    <mirrors href="http://www.khronos.org/registry/gles/extensions/EXT/EXT_sRGB.txt"

             name="EXT_sRGB">

    </mirrors>

    <features>

      <feature>

         Adds the sRGB support to textures and framebuffer objects.

      </feature>

    </features>

  </overview>

  <idl xml:space="preserve">

    [NoInterfaceObject]

    interface EXT_sRGB {

      const GLenum SRGB_EXT                                     = 0x8C40;

      const GLenum SRGB_ALPHA_EXT                               = 0x8C42;

      const GLenum SRGB8_ALPHA8_EXT                             = 0x8C43;

      const GLenum FRAMEBUFFER_ATTACHMENT_COLOR_ENCODING_EXT    = 0x8210;

};

  </idl>

  <newtok>

    <function name="texImage2D">

      <param name="format" type="GLenum"/>

      <param name="internalformat" type="GLenum"/>

      Accepted by the <code>format</code> and <code>internalformat</code> parameters: <code>SRGB_EXT</code> and <code>SRGB_ALPHA_EXT</code>

    </function>

    <function name="texSubImage2D">

      <param name="format" type="GLenum"/>

      Accepted by the <code>format</code> parameter: <code>SRGB_EXT</code> and <code>SRGB_ALPHA_EXT</code>

    </function>

    <function name="renderbufferStorage">

      <param name="internalformat" type="GLenum"/>

      Accepted by the <code>internalformat</code> parameter: <code>SRGB_ALPHA8_EXT</code>

    </function>

    <function name="getFramebufferAttachmentParameter">

      <param name="pname" type="GLenum"/>

      Accepted by the <code>pname</code> parameter: FRAMEBUFFER_ATTACHMENT_COLOR_ENCODING_EXT

    </function>

  </newtok>

  <samplecode xml:space="preserve">

    <pre>

        var ext = gl.getExtension('EXT_sRGB');

        var texture = gl.createTexture();

        gl.bindTexture(gl.TEXTURE_2D, texture);

        texImage2D(gl.TEXTURE_2D, 0, ext.SRGB_EXT, 256, 256, 0, ext.SRGB_EXT, gl.UNSIGNED_BYTE, data);

    </pre>

  </samplecode>

  <history>

    <revision date="2012/12/16">

      <change>Initial revision.</change>

    </revision>

    <revision date="2013/01/26">

      <change>Moved from proposal to draft</change>

    </revision>

    <revision date="2014/05/13">

      <change>Moved from draft to community approved</change>

    </revision>

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

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

    </revision>

  </history>

</extension>