This is an experimental technologyCheck 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:
WebGL2RenderingContext.createQuery()WebGL2RenderingContext.deleteQuery()WebGL2RenderingContext.isQuery()WebGL2RenderingContext.beginQuery()WebGL2RenderingContext.endQuery()WebGL2RenderingContext.getQuery()WebGL2RenderingContext.getQueryParameter()
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 2.0The definition of 'WebGLQuery' in that specification. | Editor's Draft | Initial definition. |
Browser compatibility
The compatibility table in this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
Update compatibility data on GitHub
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
WebGLQuery
|
Chrome
Full support 56 |
Edge
Full support 79 |
Firefox
Full support 51 |
IE
No support No |
Opera
Full support 43 |
Safari
No support No |
WebView Android
Full support 58 |
Chrome Android
Full support 58 |
Firefox Android
Full support 51 |
Opera Android
Full support 43 |
Safari iOS
No support No |
Samsung Internet Android
Full support 7.0 |
Legend
- Full support
- Full support
- No support
- No support
See also
WebGLQuery by Mozilla Contributors is licensed under CC-BY-SA 2.5.
