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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:

Examples

Creating a WebGLQuery object

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

var query = gl.createQuery();

Specifications

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

Browser compatibility

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidEdge MobileFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
Basic supportChrome Full support 56Edge No support NoFirefox Full support 51IE No support NoOpera Full support 43Safari No support NoWebView Android Full support 58Chrome Android Full support 58Edge Mobile No support NoFirefox Android Full support 51Opera Android Full support 43Safari iOS No support NoSamsung Internet Android Full support 7.0

Legend

Full support  
Full support
No support  
No support

See also

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이 페이지의 공헌자: fscholz, teoli
최종 변경자: fscholz,