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The WebGLTimerQueryEXT
interface is part of the WebGL EXT_disjoint_timer_query
extension and exposes a timer query object.
WebGL extensions are available using the WebGLRenderingContext.getExtension()
method. For more information, see also Using Extensions in the WebGL tutorial.
When working with WebGLTimerQueryEXT
objects, the following methods of the EXT_disjoint_timer_query
extension are useful:
ext.createQueryEXT()
ext.deleteQueryEXT()
ext.isQueryEXT()
ext.beginQueryEXT()
ext.endQueryEXT()
ext.queryCounterEXT()
ext.getQueryEXT()
ext.getQueryObjectEXT()
Examples
var ext = gl.getExtension("EXT_disjoint_timer_query"); var query = ext.createQueryEXT(); // creates a WebGLTimerQueryEXT object
Specifications
Specification | Status | Comment |
---|---|---|
EXT_disjoint_timer_query The definition of 'EXT_disjoint_timer_query' in that specification. |
Working Draft | Initial definition. |
Browser compatibility
Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari |
---|---|---|---|---|---|
Basic support | ? | 41 (41) [1] | ? | ? | ? |
Feature | Android | Chrome for Android | Firefox Mobile (Gecko) | IE Mobile | Opera Mobile | Safari Mobile |
---|---|---|---|---|---|---|
Basic support | ? | ? | ? | ? | ? | ? |
[1] Toggling the webgl.enable-draft-extensions preference in about:config is required.