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This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

The WebGLQuery interface is part of the WebGL 2 API and provides ways to asynchronously query for information. By default, occlusion queries and primitive queries are available.

Another kind of queries are disjoint timer queries, which allow you to measure performance and profiling of your GPU. Disjoint timer queries are available with the EXT_disjoint_timer_query extension only.

When working with WebGLQuery objects, the following methods of the WebGL2RenderingContext are useful:


Creating a WebGLQuery object

in this example, gl must be a WebGL2RenderingContext. WebGLQuery objects are not available in WebGL 1.

var query = gl.createQuery();


Specification Status Comment
WebGL 2.0
The definition of 'WebGLQuery' in that specification.
Editor's Draft Initial definition.

Browser compatibility

FeatureChromeEdgeFirefoxInternet ExplorerOperaSafari
Basic support56 No51 No43 No
FeatureAndroid webviewChrome for AndroidEdge mobileFirefox for AndroidIE mobileOpera AndroidiOS Safari
Basic support5858 No51 No43 No

See also

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 Contribuidores para esta página: fscholz, teoli
 Última atualização por: fscholz,