index.md

title	EXT_disjoint_timer_query.queryCounterEXT()
slug	Web/API/EXT_disjoint_timer_query/queryCounterEXT
page-type	webgl-extension-method
tags	API Method Reference WebGL WebGL extension
browser-compat	api.EXT_disjoint_timer_query.queryCounterEXT

{{APIRef("WebGL")}}

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

Syntax

queryCounterEXT(query, target)

Parameters

• query
  • : A {{domxref("WebGLQuery")}} object for which to record the current time.
• target
  • : A {{domxref("WebGL_API/Types", "GLenum")}} specifying the target of the time query. Must be ext.TIMESTAMP_EXT.

Return value

None ({{jsxref("undefined")}}).

Examples

var ext = gl.getExtension('EXT_disjoint_timer_query');
var startQuery = ext.createQueryEXT();
var endQuery = ext.createQueryEXT();
ext.queryCounterEXT(startQuery, ext.TIMESTAMP_EXT);

// …

ext.queryCounterEXT(endQuery, ext.TIMESTAMP_EXT);

Specifications

{{Specifications}}

Browser compatibility

{{Compat}}

See also

• {{domxref("WebGLRenderingContext.getExtension()")}}
• {{domxref("WebGLQuery")}}
• {{domxref("EXT_disjoint_timer_query")}}