WebGLQuery

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since September 2021.

Note: This feature is available in Web Workers.

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.

WebGLObject WebGLQuery

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.

js
const query = gl.createQuery();

Specifications

Specification
WebGL 2.0 Specification
# 3.2

Browser compatibility

Report problems with this compatibility data on GitHub
desktopmobile
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
WebGLQuery

Legend

Tip: you can click/tap on a cell for more information.

Full support
Full support

See also