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

See also