create command pool

main.cpp

@@ -59,6 +59,8 @@ private:
     createGraphicsPipeline();
 
     createSwapChainFramebuffers();
+
+    createCommandPool();
   }
 
   void mainLoop() {
@@ -656,7 +658,25 @@ private:
     return buffer;
   }
 
+  void createCommandPool() {
+    VkCommandPoolCreateInfo createInfo {
+      .sType = VK_STRUCTURE_TYPE_COMMAND_POOL_CREATE_INFO,
+      .flags = VK_COMMAND_POOL_CREATE_RESET_COMMAND_BUFFER_BIT,
+      .queueFamilyIndex = mGraphicsQueueFamilyIndex,
+    };
+
+    if (vkCreateCommandPool(mDevice, &createInfo, nullptr, &mCommandPool) != VK_SUCCESS) {
+      throw std::runtime_error("failed to create command pool");
+    }
+  }
+
+  void destroyCommandPool() {
+    vkDestroyCommandPool(mDevice, mCommandPool, nullptr);
+  }
+
   void cleanup() {
+    destroyCommandPool();
+
     destroySwapChainFramebuffers();
 
     vkDestroyRenderPass(mDevice, mGraphicsRenderPass, nullptr);
@@ -698,6 +718,8 @@ private:
   VkShaderModule mShaderModuleFrag = VK_NULL_HANDLE;
   VkRenderPass mGraphicsRenderPass = VK_NULL_HANDLE;
   VkPipelineLayout mGraphicsPipelineLayout {}; // no uniforms used in the shader
+
+  VkCommandPool mCommandPool = VK_NULL_HANDLE;
 };
 
 int main() {