Add staging buffer

Author: Mysvac

docs/codes/0201_vertexbuffer/main.cpp

@@ -57,8 +57,8 @@ class HelloTriangleApplication {
     vk::raii::Device m_device{ nullptr };
     vk::raii::Queue m_graphicsQueue{ nullptr };
     vk::raii::Queue m_presentQueue{ nullptr };
-    vk::raii::Buffer m_vertexBuffer{ nullptr };
     vk::raii::DeviceMemory m_vertexBufferMemory{ nullptr };
+    vk::raii::Buffer m_vertexBuffer{ nullptr };
     vk::raii::SwapchainKHR m_swapChain{ nullptr };
     std::vector<vk::Image> m_swapChainImages;
     vk::Format m_swapChainImageFormat;

docs/codes/0201_vertexbuffer/main.diff

@@ -6,8 +6,8 @@ index ed84bbb..9d5b045 100644
      vk::raii::Device m_device{ nullptr };
      vk::raii::Queue m_graphicsQueue{ nullptr };
      vk::raii::Queue m_presentQueue{ nullptr };
-+    vk::raii::Buffer m_vertexBuffer{ nullptr };
 +    vk::raii::DeviceMemory m_vertexBufferMemory{ nullptr };
++    vk::raii::Buffer m_vertexBuffer{ nullptr };
      vk::raii::SwapchainKHR m_swapChain{ nullptr };
      std::vector<vk::Image> m_swapChainImages;
      vk::Format m_swapChainImageFormat;