std::unique_ptr<QRhiBuffer> buffer(rhi->newBuffer(QRhiBuffer::Dynamic, QRhiBuffer::UniformBuffer, 1024));

for (int k = 0; k < 10000000; k++) {
  auto ru = renderer.resourceUpdateBatch();
  for (int i = 0; i < 10; i++) {
    ru->updateDynamicBuffer(buffer.get(), 0, sizeof(int), &i);
    ru->updateDynamicBuffer(buffer.get(), 256, sizeof(int), &i);
    ru->updateDynamicBuffer(buffer.get(), 512, sizeof(int), &i);
  }
  renderer.enqueueResourceUpdateBatch();
}

void Renderer::enqueueResourceUpdateBatch() {
  QRhiCommandBuffer* cb;
  rhi->beginOffscreenFrame(&cb);
  cb->resourceUpdate(m_currentResourceUpdateBatch);
  rhi->endOffscreenFrame(); 
}