From 5f94f72be54508089d767c67308c3aaddd656132 Mon Sep 17 00:00:00 2001
From: Swung0x48 <swung0x48@outlook.com>
Date: Sat, 14 Feb 2026 10:21:25 +0800
Subject: [PATCH] [Fix] (MG_Backend/DirectVulkan): create command pool and
 command buffer

---
 .../DirectVulkan/Renderer/VulkanRenderer.cpp  | 24 +++++++++++++++++++
 .../DirectVulkan/Renderer/VulkanRenderer.h    |  5 ++++
 2 files changed, 29 insertions(+)

diff --git a/MobileGL/MG_Backend/DirectVulkan/Renderer/VulkanRenderer.cpp b/MobileGL/MG_Backend/DirectVulkan/Renderer/VulkanRenderer.cpp
index cefeb100..c4dee00b 100644
--- a/MobileGL/MG_Backend/DirectVulkan/Renderer/VulkanRenderer.cpp
+++ b/MobileGL/MG_Backend/DirectVulkan/Renderer/VulkanRenderer.cpp
@@ -61,10 +61,16 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         CreateLogicalDeviceAndQueues();
         CreateSwapchain();
         CreateSwapchainImageViews();
+        CreateCommandPool();
         MGLOG_D("VulkanRenderer initialized");
     }
 
     void VulkanRenderer::Shutdown() {
+        if (m_commandPool != VK_NULL_HANDLE) {
+            vkDestroyCommandPool(m_device, m_commandPool, nullptr);
+            m_commandPool = VK_NULL_HANDLE;
+        }
+
         for (auto imageView : m_swapChainImageViews) {
             vkDestroyImageView(m_device, imageView, nullptr);
         }
@@ -836,6 +842,24 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         MGLOG_I("Swapchain image views created");
     }
 
+    void VulkanRenderer::CreateCommandPool() {
+        VkCommandPoolCreateInfo createInfo{VK_STRUCTURE_TYPE_COMMAND_POOL_CREATE_INFO};
+        createInfo.flags = VK_COMMAND_POOL_CREATE_RESET_COMMAND_BUFFER_BIT;
+        createInfo.queueFamilyIndex = m_physicalDevice.queueFamilies.graphicsFamily;
+        VK_VERIFY(vkCreateCommandPool(m_device, &createInfo, nullptr, &m_commandPool));
+        MGLOG_I("Command pool created");
+    }
+
+    void VulkanRenderer::CreateCommandBuffer() {
+        VkCommandBufferAllocateInfo allocInfo{};
+        allocInfo.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_ALLOCATE_INFO;
+        allocInfo.commandPool = m_commandPool;
+        allocInfo.level = VK_COMMAND_BUFFER_LEVEL_PRIMARY;
+        allocInfo.commandBufferCount = 1;
+        VK_VERIFY(vkAllocateCommandBuffers(m_device, &allocInfo, &m_commandBuffer));
+        MGLOG_I("Command buffer created");
+    }
+
     void VulkanRenderer::CreateSurface() {
 #if defined VK_USE_PLATFORM_ANDROID_KHR
         auto* nativeWindow = static_cast<ANativeWindow*>(m_window);
diff --git a/MobileGL/MG_Backend/DirectVulkan/Renderer/VulkanRenderer.h b/MobileGL/MG_Backend/DirectVulkan/Renderer/VulkanRenderer.h
index bd7401ed..50b8b027 100644
--- a/MobileGL/MG_Backend/DirectVulkan/Renderer/VulkanRenderer.h
+++ b/MobileGL/MG_Backend/DirectVulkan/Renderer/VulkanRenderer.h
@@ -93,6 +93,9 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         VkQueue m_graphicsQueue = VK_NULL_HANDLE;
         VkQueue m_presentQueue = VK_NULL_HANDLE;
 
+        VkCommandPool m_commandPool = VK_NULL_HANDLE;
+        VkCommandBuffer m_commandBuffer = VK_NULL_HANDLE;
+
         void CreateInstance();
         VkResult SetupDebugMessenger();
         VkResult DestroyDebugMessenger();
@@ -102,6 +105,8 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         void CreateLogicalDeviceAndQueues();
         void CreateSwapchain();
         void CreateSwapchainImageViews();
+        void CreateCommandPool();
+        void CreateCommandBuffer();
 
         static Int GetPresentQueueFamilyIndex(
             const PhysicalDevice& physicalDevice, VkSurfaceKHR surface,