Class CallbackData

gpu.hpp:430–437

* @brief Used for on-done callback data for asynchronous operations sduch as * kernel launching. */

 * kernel launching.
 */
struct CallbackData {
  WGPUBuffer buffer; // managed by owning Kernel
  size_t bufferSize;
  void *output; // non-owning, only for target memory in toCPU, not used for
                // kernel invocations
  std::promise<void> *promise;
  std::future<void> *future;
};

/**
 * @brief Staging buffer and callback data for copying data between the GPU and