命令缓冲池需要，隐式重置。

framework/api_vulkan_sample.cpp

@@ -1,4 +1,4 @@
-/* Copyright (c) 2019-2025, Sascha Willems
+/* Copyright (c) 2019-2025, Sascha Willems
  * Copyright (c) 2024-2025, Arm Limited and Contributors
  *
  * SPDX-License-Identifier: Apache-2.0
@@ -644,6 +644,9 @@ void ApiVulkanSample::create_command_pool()
 {
 	VkCommandPoolCreateInfo command_pool_info = {};
 	command_pool_info.sType                   = VK_STRUCTURE_TYPE_COMMAND_POOL_CREATE_INFO;
+	// --- 新增：设置允许重置命令缓冲区的标志 ---
+	command_pool_info.flags = VK_COMMAND_POOL_CREATE_RESET_COMMAND_BUFFER_BIT;
+	// --- 新增结束 ---
 	command_pool_info.queueFamilyIndex        = get_device().get_queue_by_flags(VK_QUEUE_GRAPHICS_BIT | VK_QUEUE_COMPUTE_BIT, 0).get_family_index();
 	VK_CHECK(vkCreateCommandPool(get_device().get_handle(), &command_pool_info, nullptr, &cmd_pool));
 }