WebGL2RenderingContext.isSync()

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

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See also