EXT_disjoint_timer_query: queryCounterEXT() method

Limited availability

This feature is not Baseline because it does not work in some of the most widely-used browsers.

The EXT_disjoint_timer_query.queryCounterEXT() method of the WebGL API records the current time into the corresponding query object.

Syntax

js
queryCounterEXT(query, target)

Parameters

query

A WebGLQuery object for which to record the current time.

target

A GLenum specifying the target of the time query. Must be ext.TIMESTAMP_EXT.

Return value

None (undefined).

Examples

js
const ext = gl.getExtension("EXT_disjoint_timer_query");
const startQuery = ext.createQueryEXT();
const endQuery = ext.createQueryEXT();
ext.queryCounterEXT(startQuery, ext.TIMESTAMP_EXT);

// …

ext.queryCounterEXT(endQuery, ext.TIMESTAMP_EXT);

Specifications

Specification
WebGL EXT_disjoint_timer_query Extension Specification

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
queryCounterEXT

Legend

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Full support
Full support
Partial support
Partial support
No support
No support
Has more compatibility info.

See also