This is an experimental technology
Because this technology's specification has not stabilized, check the compatibility table for usage in various browsers. Also note that the syntax and behavior of an experimental technology is subject to change in future versions of browsers as the specification changes.

The WebGL2RenderingContext.getQueryParameter() method of the WebGL 2 API returns parameter information of a WebGLQuery object.


any <var>gl</var>.getQueryParameter(<var>query</var>, <var>pname</var>);


A WebGLQuery object.
A GLenum specifying which information to return. Possible values:
  • gl.QUERY_RESULT: Returns a GLuint containing the query result.
  • gl.QUERY_RESULT_AVAILABLE: Returns a GLboolean indicating whether or not a query result is available.

Return value

Depends on the pname parameter, either a GLuint or a GLboolean.


var query = gl.createQuery();
gl.beginQuery(gl.ANY_SAMPLES_PASSED, query);

var result = gl.getQueryParameters(query, gl.QUERY_RESULT);


Specification Status Comment
WebGL 2.0
The definition of 'getQueryParameters' in that specification.
Editor's Draft Initial definition.
OpenGL ES 3.0
The definition of 'glGetQueryObjectuiv' in that specification.
Standard Man page of the (similar) OpenGL API.

Browser compatibility

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari
Basic support No support [2] Nightly build [1] No support No support No support
Feature Android Chrome for Android Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile
Basic support No support No support No support No support No support No support

[1] WebGL 2 is enabled by default in Firefox Nightly. To enable it in a release version of Firefox, set the preference webgl.enable-prototype-webgl2 to true in about:config.

[2] To use an experimental implementation of WebGL 2 in Chrome, you have to start Chrome with the runtime flag --enable-unsafe-es3-apis.

See also


© 2016 Mozilla Contributors
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.

API Experimental Method Reference WebGL WebGL2