WebGL2RenderingContext: waitSync() method

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

The WebGL2RenderingContext.waitSync() method of the WebGL 2 API returns immediately, but waits on the GL server until the given {{domxref("WebGLSync")}} object is signaled.

The method is a no-op in the absence of the possibility of synchronizing between multiple GL contexts.

Syntax

waitSync(sync, flags, timeout)

Parameters

• sync
  • : A {{domxref("WebGLSync")}} object on which to wait on.
• flags
  • : A {{domxref("WebGL_API/Types", "GLbitfield")}} specifying a bitwise combination of flags controlling the flushing behavior. Must be 0 (exists for extensions only).
• timeout
  • : A {{domxref("WebGL_API/Types", "GLint64")}} specifying a timeout the server should wait before continuing. Must be gl.TIMEOUT_IGNORED.

Return value

None ({{jsxref("undefined")}}).

Examples

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

Specifications

{{Specifications}}

Browser compatibility

{{Compat}}

See also

• {{domxref("WebGLSync")}}