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[Qt] Initial Imgui integration
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wheremyfoodat
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211 changed files with 49460 additions and 21918 deletions
67
third_party/imgui/backends/imgui_impl_vulkan.h
vendored
67
third_party/imgui/backends/imgui_impl_vulkan.h
vendored
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@ -2,17 +2,24 @@
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// This needs to be used along with a Platform Backend (e.g. GLFW, SDL, Win32, custom..)
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// Implemented features:
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// [X] Renderer: Support for large meshes (64k+ vertices) with 16-bit indices.
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// Missing features:
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// [ ] Renderer: User texture binding. Changes of ImTextureID aren't supported by this backend! See https://github.com/ocornut/imgui/pull/914
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// [x] Renderer: User texture binding. Use 'VkDescriptorSet' as ImTextureID. Read the FAQ about ImTextureID! See https://github.com/ocornut/imgui/pull/914 for discussions.
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// [X] Renderer: Large meshes support (64k+ vertices) with 16-bit indices.
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// [x] Renderer: Multi-viewport / platform windows. With issues (flickering when creating a new viewport).
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// You can copy and use unmodified imgui_impl_* files in your project. See examples/ folder for examples of using this.
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// If you are new to Dear ImGui, read documentation from the docs/ folder + read the top of imgui.cpp.
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// Read online: https://github.com/ocornut/imgui/tree/master/docs
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// Important: on 32-bit systems, user texture binding is only supported if your imconfig file has '#define ImTextureID ImU64'.
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// See imgui_impl_vulkan.cpp file for details.
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// The aim of imgui_impl_vulkan.h/.cpp is to be usable in your engine without any modification.
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// IF YOU FEEL YOU NEED TO MAKE ANY CHANGE TO THIS CODE, please share them and your feedback at https://github.com/ocornut/imgui/
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// You can use unmodified imgui_impl_* files in your project. See examples/ folder for examples of using this.
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// Prefer including the entire imgui/ repository into your project (either as a copy or as a submodule), and only build the backends you need.
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// Learn about Dear ImGui:
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// - FAQ https://dearimgui.com/faq
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// - Getting Started https://dearimgui.com/getting-started
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// - Documentation https://dearimgui.com/docs (same as your local docs/ folder).
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// - Introduction, links and more at the top of imgui.cpp
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// Important note to the reader who wish to integrate imgui_impl_vulkan.cpp/.h in their own engine/app.
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// - Common ImGui_ImplVulkan_XXX functions and structures are used to interface with imgui_impl_vulkan.cpp/.h.
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// You will use those if you want to use this rendering backend in your engine/app.
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@ -21,6 +28,7 @@
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// Read comments in imgui_impl_vulkan.h.
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#pragma once
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#ifndef IMGUI_DISABLE
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#include "imgui.h" // IMGUI_IMPL_API
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// [Configuration] in order to use a custom Vulkan function loader:
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@ -39,7 +47,12 @@
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#if defined(IMGUI_IMPL_VULKAN_NO_PROTOTYPES) && !defined(VK_NO_PROTOTYPES)
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#define VK_NO_PROTOTYPES
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#endif
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#if defined(VK_USE_PLATFORM_WIN32_KHR) && !defined(NOMINMAX)
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#define NOMINMAX
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#include <vulkan/vulkan.h>
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#else
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#include <vulkan/vulkan.h>
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#endif
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// Initialization data, for ImGui_ImplVulkan_Init()
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// [Please zero-clear before use!]
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@ -55,23 +68,36 @@ struct ImGui_ImplVulkan_InitInfo
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uint32_t Subpass;
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uint32_t MinImageCount; // >= 2
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uint32_t ImageCount; // >= MinImageCount
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VkSampleCountFlagBits MSAASamples; // >= VK_SAMPLE_COUNT_1_BIT
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VkSampleCountFlagBits MSAASamples; // >= VK_SAMPLE_COUNT_1_BIT (0 -> default to VK_SAMPLE_COUNT_1_BIT)
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// Dynamic Rendering (Optional)
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bool UseDynamicRendering; // Need to explicitly enable VK_KHR_dynamic_rendering extension to use this, even for Vulkan 1.3.
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VkFormat ColorAttachmentFormat; // Required for dynamic rendering
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// Allocation, Debugging
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const VkAllocationCallbacks* Allocator;
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void (*CheckVkResultFn)(VkResult err);
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VkDeviceSize MinAllocationSize; // Minimum allocation size. Set to 1024*1024 to satisfy zealous best practices validation layer and waste a little memory.
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};
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// Called by user code
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IMGUI_IMPL_API bool ImGui_ImplVulkan_Init(ImGui_ImplVulkan_InitInfo* info, VkRenderPass render_pass);
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IMGUI_IMPL_API void ImGui_ImplVulkan_Shutdown();
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IMGUI_IMPL_API void ImGui_ImplVulkan_NewFrame();
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IMGUI_IMPL_API void ImGui_ImplVulkan_RenderDrawData(ImDrawData* draw_data, VkCommandBuffer command_buffer, VkPipeline pipeline = VK_NULL_HANDLE);
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IMGUI_IMPL_API bool ImGui_ImplVulkan_CreateFontsTexture(VkCommandBuffer command_buffer);
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IMGUI_IMPL_API void ImGui_ImplVulkan_DestroyFontUploadObjects();
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IMGUI_IMPL_API void ImGui_ImplVulkan_SetMinImageCount(uint32_t min_image_count); // To override MinImageCount after initialization (e.g. if swap chain is recreated)
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IMGUI_IMPL_API bool ImGui_ImplVulkan_Init(ImGui_ImplVulkan_InitInfo* info, VkRenderPass render_pass);
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IMGUI_IMPL_API void ImGui_ImplVulkan_Shutdown();
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IMGUI_IMPL_API void ImGui_ImplVulkan_NewFrame();
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IMGUI_IMPL_API void ImGui_ImplVulkan_RenderDrawData(ImDrawData* draw_data, VkCommandBuffer command_buffer, VkPipeline pipeline = VK_NULL_HANDLE);
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IMGUI_IMPL_API bool ImGui_ImplVulkan_CreateFontsTexture();
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IMGUI_IMPL_API void ImGui_ImplVulkan_DestroyFontsTexture();
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IMGUI_IMPL_API void ImGui_ImplVulkan_SetMinImageCount(uint32_t min_image_count); // To override MinImageCount after initialization (e.g. if swap chain is recreated)
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// Register a texture (VkDescriptorSet == ImTextureID)
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// FIXME: This is experimental in the sense that we are unsure how to best design/tackle this problem
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// Please post to https://github.com/ocornut/imgui/pull/914 if you have suggestions.
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IMGUI_IMPL_API VkDescriptorSet ImGui_ImplVulkan_AddTexture(VkSampler sampler, VkImageView image_view, VkImageLayout image_layout);
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IMGUI_IMPL_API void ImGui_ImplVulkan_RemoveTexture(VkDescriptorSet descriptor_set);
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// Optional: load Vulkan functions with a custom function loader
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// This is only useful with IMGUI_IMPL_VULKAN_NO_PROTOTYPES / VK_NO_PROTOTYPES
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IMGUI_IMPL_API bool ImGui_ImplVulkan_LoadFunctions(PFN_vkVoidFunction(*loader_func)(const char* function_name, void* user_data), void* user_data = NULL);
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IMGUI_IMPL_API bool ImGui_ImplVulkan_LoadFunctions(PFN_vkVoidFunction(*loader_func)(const char* function_name, void* user_data), void* user_data = nullptr);
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//-------------------------------------------------------------------------
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// Internal / Miscellaneous Vulkan Helpers
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@ -80,8 +106,8 @@ IMGUI_IMPL_API bool ImGui_ImplVulkan_LoadFunctions(PFN_vkVoidFunction(*loade
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// You probably do NOT need to use or care about those functions.
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// Those functions only exist because:
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// 1) they facilitate the readability and maintenance of the multiple main.cpp examples files.
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// 2) the upcoming multi-viewport feature will need them internally.
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// Generally we avoid exposing any kind of superfluous high-level helpers in the backends,
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// 2) the multi-viewport / platform window implementation needs them internally.
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// Generally we avoid exposing any kind of superfluous high-level helpers in the bindings,
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// but it is too much code to duplicate everywhere so we exceptionally expose them.
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//
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// Your engine/app will likely _already_ have code to setup all that stuff (swap chain, render pass, frame buffers, etc.).
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@ -130,19 +156,22 @@ struct ImGui_ImplVulkanH_Window
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VkPresentModeKHR PresentMode;
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VkRenderPass RenderPass;
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VkPipeline Pipeline; // The window pipeline may uses a different VkRenderPass than the one passed in ImGui_ImplVulkan_InitInfo
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bool UseDynamicRendering;
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bool ClearEnable;
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VkClearValue ClearValue;
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uint32_t FrameIndex; // Current frame being rendered to (0 <= FrameIndex < FrameInFlightCount)
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uint32_t ImageCount; // Number of simultaneous in-flight frames (returned by vkGetSwapchainImagesKHR, usually derived from min_image_count)
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uint32_t SemaphoreCount; // Number of simultaneous in-flight frames + 1, to be able to use it in vkAcquireNextImageKHR
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uint32_t SemaphoreIndex; // Current set of swapchain wait semaphores we're using (needs to be distinct from per frame data)
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ImGui_ImplVulkanH_Frame* Frames;
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ImGui_ImplVulkanH_FrameSemaphores* FrameSemaphores;
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ImGui_ImplVulkanH_Window()
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{
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memset(this, 0, sizeof(*this));
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PresentMode = VK_PRESENT_MODE_MAX_ENUM_KHR;
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memset((void*)this, 0, sizeof(*this));
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PresentMode = (VkPresentModeKHR)~0; // Ensure we get an error if user doesn't set this.
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ClearEnable = true;
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}
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};
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#endif // #ifndef IMGUI_DISABLE
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