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WebGL2RenderingContext.isSync

This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

The WebGL2RenderingContext.isSync() method of the WebGL 2 API returns true if the passed object is a valid WebGLSync object.

Syntax

GLboolean gl.isSync(sync);

Parameters

sync
A WebGLSync object to test.

Return value

A GLboolean indicating whether the given object is a valid WebGLSync object (true) or not (false).

Examples

gl must be a WebGL2RenderingContext. WebGLSync objects are not available in WebGL 1.

var sync = gl.fenceSync(gl.SYNC_GPU_COMMANDS_COMPLETE, 0);

// ...

gl.isSync(sync);

Specifications

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

Browser compatibility

Feature Chrome Edge Firefox Internet Explorer Opera Safari
Basic support 56 No 51 No 43 No
Feature Android webview Chrome for Android Edge mobile Firefox for Android IE mobile Opera Android iOS Safari
Basic support 58 58 No 51 No 43 No

See also

© 2005–2018 Mozilla Developer Network and individual contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/API/WebGL2RenderingContext/isSync