merge local branch 'mover_in_c++'

ref/imgui/examples/imgui_impl_vulkan.h

@@ -0,0 +1,103 @@
+// ImGui Renderer for: Vulkan
+// This needs to be used along with a Platform Binding (e.g. GLFW, SDL, Win32, custom..)
+
+// Missing features:
+//  [ ] Renderer: User texture binding. Changes of ImTextureID aren't supported by this binding! See https://github.com/ocornut/imgui/pull/914
+
+// You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this.
+// If you are new to dear imgui, read examples/README.txt and read the documentation at the top of imgui.cpp.
+// https://github.com/ocornut/imgui
+
+// 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/
+
+#include <vulkan/vulkan.h>
+
+#define IMGUI_VK_QUEUED_FRAMES      2
+
+// Please zero-clear before use.
+struct ImGui_ImplVulkan_InitInfo
+{
+    VkInstance                      Instance;
+    VkPhysicalDevice                PhysicalDevice;
+    VkDevice                        Device;
+    uint32_t                        QueueFamily;
+    VkQueue                         Queue;
+    VkPipelineCache                 PipelineCache;
+    VkDescriptorPool                DescriptorPool;
+    const VkAllocationCallbacks*    Allocator;
+    void                            (*CheckVkResultFn)(VkResult err);
+};
+
+// Called by user code
+IMGUI_IMPL_API bool     ImGui_ImplVulkan_Init(ImGui_ImplVulkan_InitInfo* info, VkRenderPass render_pass);
+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);
+IMGUI_IMPL_API bool     ImGui_ImplVulkan_CreateFontsTexture(VkCommandBuffer command_buffer);
+IMGUI_IMPL_API void     ImGui_ImplVulkan_InvalidateFontUploadObjects();
+
+// Called by ImGui_ImplVulkan_Init() might be useful elsewhere.
+IMGUI_IMPL_API bool     ImGui_ImplVulkan_CreateDeviceObjects();
+IMGUI_IMPL_API void     ImGui_ImplVulkan_InvalidateDeviceObjects();
+
+
+//-------------------------------------------------------------------------
+// Internal / Miscellaneous Vulkan Helpers
+//-------------------------------------------------------------------------
+// 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 upcoming multi-viewport feature will need them internally.
+// Generally we avoid exposing any kind of superfluous high-level helpers in the bindings, 
+// but it is too much code to duplicate everywhere so we exceptionally expose them.
+// Your application/engine will likely already have code to setup all that stuff (swap chain, render pass, frame buffers, etc.).
+// You may read this code to learn about Vulkan, but it is recommended you use you own custom tailored code to do equivalent work.
+// (those functions do not interact with any of the state used by the regular ImGui_ImplVulkan_XXX functions)
+//-------------------------------------------------------------------------
+
+struct ImGui_ImplVulkanH_FrameData;
+struct ImGui_ImplVulkanH_WindowData;
+
+IMGUI_IMPL_API void                 ImGui_ImplVulkanH_CreateWindowDataCommandBuffers(VkPhysicalDevice physical_device, VkDevice device, uint32_t queue_family, ImGui_ImplVulkanH_WindowData* wd, const VkAllocationCallbacks* allocator);
+IMGUI_IMPL_API void                 ImGui_ImplVulkanH_CreateWindowDataSwapChainAndFramebuffer(VkPhysicalDevice physical_device, VkDevice device, ImGui_ImplVulkanH_WindowData* wd, const VkAllocationCallbacks* allocator, int w, int h);
+IMGUI_IMPL_API void                 ImGui_ImplVulkanH_DestroyWindowData(VkInstance instance, VkDevice device, ImGui_ImplVulkanH_WindowData* wd, 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 int                  ImGui_ImplVulkanH_GetMinImageCountFromPresentMode(VkPresentModeKHR present_mode);
+
+// Helper structure to hold the data needed by one rendering frame
+struct ImGui_ImplVulkanH_FrameData
+{
+    uint32_t            BackbufferIndex;        // Keep track of recently rendered swapchain frame indices
+    VkCommandPool       CommandPool;
+    VkCommandBuffer     CommandBuffer;
+    VkFence             Fence;
+    VkSemaphore         ImageAcquiredSemaphore;
+    VkSemaphore         RenderCompleteSemaphore;
+
+    IMGUI_IMPL_API ImGui_ImplVulkanH_FrameData();
+};
+
+// Helper structure to hold the data needed by one rendering context into one OS window
+struct ImGui_ImplVulkanH_WindowData
+{
+    int                 Width;
+    int                 Height;
+    VkSwapchainKHR      Swapchain;
+    VkSurfaceKHR        Surface;
+    VkSurfaceFormatKHR  SurfaceFormat;
+    VkPresentModeKHR    PresentMode;
+    VkRenderPass        RenderPass;
+    bool                ClearEnable;
+    VkClearValue        ClearValue;
+    uint32_t            BackBufferCount;
+    VkImage             BackBuffer[16];
+    VkImageView         BackBufferView[16];
+    VkFramebuffer       Framebuffer[16];
+    uint32_t            FrameIndex;
+    ImGui_ImplVulkanH_FrameData Frames[IMGUI_VK_QUEUED_FRAMES];
+
+    IMGUI_IMPL_API ImGui_ImplVulkanH_WindowData();
+};
+