WebGL2RenderingContext: fenceSync() method

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since September 2021.

The WebGL2RenderingContext.fenceSync() method of the WebGL 2 API creates a new WebGLSync object and inserts it into the GL command stream.

Syntax

js
fenceSync(condition, flags)

Parameters

condition

A GLenum specifying the condition that must be met to set the sync object's state to signaled. Must be gl.SYNC_GPU_COMMANDS_COMPLETE.

flags

A GLbitfield specifying a bitwise combination of flags controlling the behavior of the sync object. Must be 0 (exists for extensions only).

Return value

A WebGLSync object.

Examples

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

js
const sync = gl.fenceSync(gl.SYNC_GPU_COMMANDS_COMPLETE, 0);

Specifications

Specification
WebGL 2.0 Specification
# 3.7.14

Browser compatibility

BCD tables only load in the browser

See also