WebGL2RenderingContext: fenceSync() method

{{APIRef("WebGL")}}{{AvailableInWorkers}}

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

Syntax

fenceSync(condition, flags)

Parameters

• condition
  • : A {{domxref("WebGL_API/Types", "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 {{domxref("WebGL_API/Types", "GLbitfield")}} specifying a bitwise combination of flags controlling the behavior of the sync object. Must be 0 (exists for extensions only).

Return value

A {{domxref("WebGLSync")}} object.

Examples

gl must be a {{domxref("WebGL2RenderingContext")}}. WebGLSync objects are not available in WebGL 1.

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

Specifications

{{Specifications}}

Browser compatibility

{{Compat}}

See also

• {{domxref("WebGLSync")}}