The WebGLSync interface is part of the WebGL 2 API and is used to synchronize activities between the GPU and the application.

When working with WebGLSync objects, the following methods of the WebGL2RenderingContext are useful:


Creating a WebGLSync object

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

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


Specification Status Comment
WebGL 2.0
The definition of 'WebGLSync' in that specification.
Editor's Draft Initial definition.

Browser compatibility

BCD tables only load in the browser

See also