WebGL2RenderingContext.fenceSync()

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

Syntax

WebGLSync gl.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.

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

Specifications

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

Browser compatibility

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See also