Function cleanup

examples/million-points/main.ts:543–555

()

   */
  let cleanedUp = false;
  const cleanup = (): void => {
    if (cleanedUp) return;
    cleanedUp = true;

    if (rafId !== null) cancelAnimationFrame(rafId);
    ro.disconnect();
    disposeSliderUi();
    coordinator?.dispose();
    coordinator = null;
    gpuContext?.destroy();
    gpuContext = null;
    canvas.remove();
  };

  try {
    // Establish initial canvas size before WebGPU init so GPUContext sees non-zero dimensions.