refactor 2

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diff --git a/imgui-1.92.1/backends/imgui_impl_vulkan.h b/imgui-1.92.1/backends/imgui_impl_vulkan.h
deleted file mode 100644
index 4baa983..0000000
--- a/imgui-1.92.1/backends/imgui_impl_vulkan.h
+++ /dev/null
@@ -1,223 +0,0 @@
-// dear imgui: Renderer Backend for Vulkan
-// This needs to be used along with a Platform Backend (e.g. GLFW, SDL, Win32, custom..)
-
-// Implemented features:
-//  [!] Renderer: User texture binding. Use 'VkDescriptorSet' as texture identifier. Call ImGui_ImplVulkan_AddTexture() to register one. Read the FAQ about ImTextureID/ImTextureRef + https://github.com/ocornut/imgui/pull/914 for discussions.
-//  [X] Renderer: Large meshes support (64k+ vertices) even with 16-bit indices (ImGuiBackendFlags_RendererHasVtxOffset).
-//  [X] Renderer: Texture updates support for dynamic font atlas (ImGuiBackendFlags_RendererHasTextures).
-//  [X] Renderer: Expose selected render state for draw callbacks to use. Access in '(ImGui_ImplXXXX_RenderState*)GetPlatformIO().Renderer_RenderState'.
-
-// The aim of imgui_impl_vulkan.h/.cpp is to be usable in your engine without any modification.
-// IF YOU FEEL YOU NEED TO MAKE ANY CHANGE TO THIS CODE, please share them and your feedback at https://github.com/ocornut/imgui/
-
-// You can use unmodified imgui_impl_* files in your project. See examples/ folder for examples of using this.
-// Prefer including the entire imgui/ repository into your project (either as a copy or as a submodule), and only build the backends you need.
-// Learn about Dear ImGui:
-// - FAQ                  https://dearimgui.com/faq
-// - Getting Started      https://dearimgui.com/getting-started
-// - Documentation        https://dearimgui.com/docs (same as your local docs/ folder).
-// - Introduction, links and more at the top of imgui.cpp
-
-// Important note to the reader who wish to integrate imgui_impl_vulkan.cpp/.h in their own engine/app.
-// - Common ImGui_ImplVulkan_XXX functions and structures are used to interface with imgui_impl_vulkan.cpp/.h.
-//   You will use those if you want to use this rendering backend in your engine/app.
-// - Helper ImGui_ImplVulkanH_XXX functions and structures are only used by this example (main.cpp) and by
-//   the backend itself (imgui_impl_vulkan.cpp), but should PROBABLY NOT be used by your own engine/app code.
-// Read comments in imgui_impl_vulkan.h.
-
-#pragma once
-#ifndef IMGUI_DISABLE
-#include "imgui.h"      // IMGUI_IMPL_API
-
-// [Configuration] in order to use a custom Vulkan function loader:
-// (1) You'll need to disable default Vulkan function prototypes.
-//     We provide a '#define IMGUI_IMPL_VULKAN_NO_PROTOTYPES' convenience configuration flag.
-//     In order to make sure this is visible from the imgui_impl_vulkan.cpp compilation unit:
-//     - Add '#define IMGUI_IMPL_VULKAN_NO_PROTOTYPES' in your imconfig.h file
-//     - Or as a compilation flag in your build system
-//     - Or uncomment here (not recommended because you'd be modifying imgui sources!)
-//     - Do not simply add it in a .cpp file!
-// (2) Call ImGui_ImplVulkan_LoadFunctions() before ImGui_ImplVulkan_Init() with your custom function.
-// If you have no idea what this is, leave it alone!
-//#define IMGUI_IMPL_VULKAN_NO_PROTOTYPES
-
-// Convenience support for Volk
-// (you can also technically use IMGUI_IMPL_VULKAN_NO_PROTOTYPES + wrap Volk via ImGui_ImplVulkan_LoadFunctions().)
-//#define IMGUI_IMPL_VULKAN_USE_VOLK
-
-#if defined(IMGUI_IMPL_VULKAN_NO_PROTOTYPES) && !defined(VK_NO_PROTOTYPES)
-#define VK_NO_PROTOTYPES
-#endif
-#if defined(VK_USE_PLATFORM_WIN32_KHR) && !defined(NOMINMAX)
-#define NOMINMAX
-#endif
-
-// Vulkan includes
-#ifdef IMGUI_IMPL_VULKAN_USE_VOLK
-#include <volk.h>
-#else
-#include <vulkan/vulkan.h>
-#endif
-#if defined(VK_VERSION_1_3) || defined(VK_KHR_dynamic_rendering)
-#define IMGUI_IMPL_VULKAN_HAS_DYNAMIC_RENDERING
-#endif
-
-// Backend uses a small number of descriptors per font atlas + as many as additional calls done to ImGui_ImplVulkan_AddTexture().
-#define IMGUI_IMPL_VULKAN_MINIMUM_IMAGE_SAMPLER_POOL_SIZE   (8)     // Minimum per atlas
-
-// Initialization data, for ImGui_ImplVulkan_Init()
-// [Please zero-clear before use!]
-// - About descriptor pool:
-//   - A VkDescriptorPool should be created with VK_DESCRIPTOR_POOL_CREATE_FREE_DESCRIPTOR_SET_BIT,
-//     and must contain a pool size large enough to hold a small number of VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER descriptors.
-//   - As an convenience, by setting DescriptorPoolSize > 0 the backend will create one for you.
-// - About dynamic rendering:
-//   - When using dynamic rendering, set UseDynamicRendering=true and fill PipelineRenderingCreateInfo structure.
-struct ImGui_ImplVulkan_InitInfo
-{
-    uint32_t                        ApiVersion;                 // Fill with API version of Instance, e.g. VK_API_VERSION_1_3 or your value of VkApplicationInfo::apiVersion. May be lower than header version (VK_HEADER_VERSION_COMPLETE)
-    VkInstance                      Instance;
-    VkPhysicalDevice                PhysicalDevice;
-    VkDevice                        Device;
-    uint32_t                        QueueFamily;
-    VkQueue                         Queue;
-    VkDescriptorPool                DescriptorPool;             // See requirements in note above; ignored if using DescriptorPoolSize > 0
-    VkRenderPass                    RenderPass;                 // Ignored if using dynamic rendering
-    uint32_t                        MinImageCount;              // >= 2
-    uint32_t                        ImageCount;                 // >= MinImageCount
-    VkSampleCountFlagBits           MSAASamples;                // 0 defaults to VK_SAMPLE_COUNT_1_BIT
-
-    // (Optional)
-    VkPipelineCache                 PipelineCache;
-    uint32_t                        Subpass;
-
-    // (Optional) Set to create internal descriptor pool instead of using DescriptorPool
-    uint32_t                        DescriptorPoolSize;
-
-    // (Optional) Dynamic Rendering
-    // Need to explicitly enable VK_KHR_dynamic_rendering extension to use this, even for Vulkan 1.3.
-    bool                            UseDynamicRendering;
-#ifdef IMGUI_IMPL_VULKAN_HAS_DYNAMIC_RENDERING
-    VkPipelineRenderingCreateInfoKHR PipelineRenderingCreateInfo;
-#endif
-
-    // (Optional) Allocation, Debugging
-    const VkAllocationCallbacks*    Allocator;
-    void                            (*CheckVkResultFn)(VkResult err);
-    VkDeviceSize                    MinAllocationSize;          // Minimum allocation size. Set to 1024*1024 to satisfy zealous best practices validation layer and waste a little memory.
-};
-
-// Follow "Getting Started" link and check examples/ folder to learn about using backends!
-IMGUI_IMPL_API bool             ImGui_ImplVulkan_Init(ImGui_ImplVulkan_InitInfo* info);
-IMGUI_IMPL_API void             ImGui_ImplVulkan_Shutdown();
-IMGUI_IMPL_API void             ImGui_ImplVulkan_NewFrame();
-IMGUI_IMPL_API void             ImGui_ImplVulkan_RenderDrawData(ImDrawData* draw_data, VkCommandBuffer command_buffer, VkPipeline pipeline = VK_NULL_HANDLE);
-IMGUI_IMPL_API void             ImGui_ImplVulkan_SetMinImageCount(uint32_t min_image_count); // To override MinImageCount after initialization (e.g. if swap chain is recreated)
-
-// (Advanced) Use e.g. if you need to precisely control the timing of texture updates (e.g. for staged rendering), by setting ImDrawData::Textures = NULL to handle this manually.
-IMGUI_IMPL_API void             ImGui_ImplVulkan_UpdateTexture(ImTextureData* tex);
-
-// Register a texture (VkDescriptorSet == ImTextureID)
-// FIXME: This is experimental in the sense that we are unsure how to best design/tackle this problem
-// Please post to https://github.com/ocornut/imgui/pull/914 if you have suggestions.
-IMGUI_IMPL_API VkDescriptorSet  ImGui_ImplVulkan_AddTexture(VkSampler sampler, VkImageView image_view, VkImageLayout image_layout);
-IMGUI_IMPL_API void             ImGui_ImplVulkan_RemoveTexture(VkDescriptorSet descriptor_set);
-
-// Optional: load Vulkan functions with a custom function loader
-// This is only useful with IMGUI_IMPL_VULKAN_NO_PROTOTYPES / VK_NO_PROTOTYPES
-IMGUI_IMPL_API bool             ImGui_ImplVulkan_LoadFunctions(uint32_t api_version, PFN_vkVoidFunction(*loader_func)(const char* function_name, void* user_data), void* user_data = nullptr);
-
-// [BETA] Selected render state data shared with callbacks.
-// This is temporarily stored in GetPlatformIO().Renderer_RenderState during the ImGui_ImplVulkan_RenderDrawData() call.
-// (Please open an issue if you feel you need access to more data)
-struct ImGui_ImplVulkan_RenderState
-{
-    VkCommandBuffer     CommandBuffer;
-    VkPipeline          Pipeline;
-    VkPipelineLayout    PipelineLayout;
-};
-
-//-------------------------------------------------------------------------
-// Internal / Miscellaneous Vulkan Helpers
-//-------------------------------------------------------------------------
-// Used by example's main.cpp. Used by multi-viewport features. PROBABLY NOT used by your own engine/app.
-//
-// You probably do NOT need to use or care about those functions.
-// Those functions only exist because:
-//   1) they facilitate the readability and maintenance of the multiple main.cpp examples files.
-//   2) the multi-viewport / platform window implementation needs them internally.
-// Generally we avoid exposing any kind of superfluous high-level helpers in the backends,
-// but it is too much code to duplicate everywhere so we exceptionally expose them.
-//
-// Your engine/app will likely _already_ have code to setup all that stuff (swap chain,
-// render pass, frame buffers, etc.). You may read this code if you are curious, but
-// it is recommended you use you own custom tailored code to do equivalent work.
-//
-// We don't provide a strong guarantee that we won't change those functions API.
-//
-// The ImGui_ImplVulkanH_XXX functions should NOT interact with any of the state used
-// by the regular ImGui_ImplVulkan_XXX functions).
-//-------------------------------------------------------------------------
-
-struct ImGui_ImplVulkanH_Frame;
-struct ImGui_ImplVulkanH_Window;
-
-// Helpers
-IMGUI_IMPL_API void                 ImGui_ImplVulkanH_CreateOrResizeWindow(VkInstance instance, VkPhysicalDevice physical_device, VkDevice device, ImGui_ImplVulkanH_Window* wnd, uint32_t queue_family, const VkAllocationCallbacks* allocator, int w, int h, uint32_t min_image_count);
-IMGUI_IMPL_API void                 ImGui_ImplVulkanH_DestroyWindow(VkInstance instance, VkDevice device, ImGui_ImplVulkanH_Window* wnd, const VkAllocationCallbacks* allocator);
-IMGUI_IMPL_API VkSurfaceFormatKHR   ImGui_ImplVulkanH_SelectSurfaceFormat(VkPhysicalDevice physical_device, VkSurfaceKHR surface, const VkFormat* request_formats, int request_formats_count, VkColorSpaceKHR request_color_space);
-IMGUI_IMPL_API VkPresentModeKHR     ImGui_ImplVulkanH_SelectPresentMode(VkPhysicalDevice physical_device, VkSurfaceKHR surface, const VkPresentModeKHR* request_modes, int request_modes_count);
-IMGUI_IMPL_API VkPhysicalDevice     ImGui_ImplVulkanH_SelectPhysicalDevice(VkInstance instance);
-IMGUI_IMPL_API uint32_t             ImGui_ImplVulkanH_SelectQueueFamilyIndex(VkPhysicalDevice physical_device);
-IMGUI_IMPL_API int                  ImGui_ImplVulkanH_GetMinImageCountFromPresentMode(VkPresentModeKHR present_mode);
-
-// Helper structure to hold the data needed by one rendering frame
-// (Used by example's main.cpp. Used by multi-viewport features. Probably NOT used by your own engine/app.)
-// [Please zero-clear before use!]
-struct ImGui_ImplVulkanH_Frame
-{
-    VkCommandPool       CommandPool;
-    VkCommandBuffer     CommandBuffer;
-    VkFence             Fence;
-    VkImage             Backbuffer;
-    VkImageView         BackbufferView;
-    VkFramebuffer       Framebuffer;
-};
-
-struct ImGui_ImplVulkanH_FrameSemaphores
-{
-    VkSemaphore         ImageAcquiredSemaphore;
-    VkSemaphore         RenderCompleteSemaphore;
-};
-
-// Helper structure to hold the data needed by one rendering context into one OS window
-// (Used by example's main.cpp. Used by multi-viewport features. Probably NOT used by your own engine/app.)
-struct ImGui_ImplVulkanH_Window
-{
-    int                 Width;
-    int                 Height;
-    VkSwapchainKHR      Swapchain;
-    VkSurfaceKHR        Surface;
-    VkSurfaceFormatKHR  SurfaceFormat;
-    VkPresentModeKHR    PresentMode;
-    VkRenderPass        RenderPass;
-    VkPipeline          Pipeline;               // The window pipeline may uses a different VkRenderPass than the one passed in ImGui_ImplVulkan_InitInfo
-    bool                UseDynamicRendering;
-    bool                ClearEnable;
-    VkClearValue        ClearValue;
-    uint32_t            FrameIndex;             // Current frame being rendered to (0 <= FrameIndex < FrameInFlightCount)
-    uint32_t            ImageCount;             // Number of simultaneous in-flight frames (returned by vkGetSwapchainImagesKHR, usually derived from min_image_count)
-    uint32_t            SemaphoreCount;         // Number of simultaneous in-flight frames + 1, to be able to use it in vkAcquireNextImageKHR
-    uint32_t            SemaphoreIndex;         // Current set of swapchain wait semaphores we're using (needs to be distinct from per frame data)
-    ImVector<ImGui_ImplVulkanH_Frame>           Frames;
-    ImVector<ImGui_ImplVulkanH_FrameSemaphores> FrameSemaphores;
-
-    ImGui_ImplVulkanH_Window()
-    {
-        memset((void*)this, 0, sizeof(*this));
-        PresentMode = (VkPresentModeKHR)~0;     // Ensure we get an error if user doesn't set this.
-        ClearEnable = true;
-    }
-};
-
-#endif // #ifndef IMGUI_DISABLE