{"json_modified": "2016-03-28T08:50:51.743058", "uuid": "0a9ff61c-1928-4b6c-9beb-8aaf0c781b06", "title": "OES_standard_derivatives", "url": "/en-US/docs/Web/API/OES_standard_derivatives", "tags": ["WebGL extension", "Reference", "WebGL", "API"], "translations": [], "modified": "2016-02-25T08:20:01", "label": "OES_standard_derivatives", "localization_tags": [], "locale": "en-US", "id": 177318, "last_edit": "2016-02-25T08:16:16", "summary": "The <code><strong>OES_standard_derivatives</strong></code> extension is part of the <a href=\"/en-US/docs/Web/API/WebGL_API\">WebGL API</a> and adds the GLSL derivative functions <code>dFdx</code>, <code>dFdy</code>, and <code>fwidth</code>.", "sections": [{"id": "Quick_Links", "title": null}, {"id": "Constants", "title": "Constants"}, {"id": "GLSL_built-in_functions", "title": "GLSL built-in functions"}, {"id": "Examples", "title": "Examples"}, {"id": "Specifications", "title": "Specifications"}, {"id": "Browser_compatibility", "title": "Browser compatibility"}, {"id": "See_also", "title": "See also"}], "slug": "Web/API/OES_standard_derivatives", "review_tags": []}