enderPass(renderPassDescriptor);
    pass.setPipeline(pipeline);
    pass.draw(3);  // call our vertex shader 3 times
    pass.end();

    const commandBuffer = encoder.finish();
    device.queue.submit([commandBuffer]);
  }

  const observer = new ResizeObserver(entries => {
    for (const entry of entries) {
      const canvas = entry.target;
      const width = entry.contentBoxSize[0].inlineSize;
      const height = entry.contentBoxSize[0].blockSize;
      canvas.width = Math.max(1, Math.min(width, devi