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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>