BrowserVersionOwn?TypeAs String
Chrome79.0.3945???
Edge85.0.564???
Firefox68.0.0???
IE10.0.0???
IE11.0.0ownobject[object OES_standard_derivatives]
Safari10.1.2???
YandexBot3.0.0???

PropertiesChromeEdgeFirefoxIESafariYandexBot
FRAGMENT_SHADER_DERIVATIVE_HINT_OES??? 11.0.0??
prototype??? 11.0.0??