ImGui.hpp

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#pragma once
#define IMGUI_DISABLE_OBSOLETE_FUNCTIONS
#define IMGUI_DEFINE_MATH_OPERATORS
#define IMGUI_DISABLE_DEFAULT_ALLOCATORS
#include <SDL3/SDL.h>
#include <imgui.h>
 
#include <RHICore/Device.hpp>
#include <RenderCore/Renderer.hpp>
enum ImGui_ImplFoundation_ImageSampler
{
    ImGuiImplFoundationImageSamplerLinear = 0,
    ImGuiImplFoundationImageSamplerNearest = 1
};
 
/* -- Internals -- */
void ImGui_ImplFoundation_ImplUpdateTexture(ImTextureData* tex);
void ImGui_ImplFoundation_ImplPassSetup(Foundation::RenderCore::PassHandle self,
                                        Foundation::RenderCore::Renderer* renderer,
                                        Foundation::RenderCore::ResourceHandle vtxBuffer,
                                        Foundation::RenderCore::ResourceHandle idxBuffer,
                                        Foundation::RenderCore::ResourceHandle linSampler,
                                        Foundation::RenderCore::ResourceHandle nearSampler,
                                        Foundation::Core::StringView customVS = "",
                                        Foundation::Core::StringView customFS = "");
void ImGui_ImplFoundation_ImplPassRecord(Foundation::RenderCore::PassHandle self,
                                         Foundation::RenderCore::Renderer* renderer, bool clear,
                                         Foundation::RHI::RHICommandList* cmd,
                                         Foundation::RenderCore::ResourceHandle vtxBuffer,
                                         Foundation::RenderCore::ResourceHandle idxBuffer);
void ImGui_ImplFoundation_ImplCreateResources(Foundation::RenderCore::Renderer* renderer,
                                              Foundation::RenderCore::ResourceHandle& outVtxBuffer,
                                              Foundation::RenderCore::ResourceHandle& outIdxBuffer,
                                              Foundation::RenderCore::ResourceHandle& outLinearSampler,
                                              Foundation::RenderCore::ResourceHandle& outNearestSampler);
// ^^^ Internals
 
/* -- APIs -- */
void ImGui_ImplFoundation_Init(Foundation::RHI::RHIDevice* device, SDL_Window* window);
 
void ImGui_ImplFoundation_ProcessEvent(SDL_Event* event);
void ImGui_ImplFoundation_NewFrame();
 
void ImGui_ImplFoundation_Shutdown();
 
ImTextureID
ImGui_ImplFoundation_AddImage(Foundation::RHI::RHITextureView* textureView,
                              ImGui_ImplFoundation_ImageSampler sampler = ImGuiImplFoundationImageSamplerLinear);
 
void ImGui_ImplFoundation_RemoveImage(ImTextureID textureID);
 
template <typename FSetup, typename FRecordPrologue>
Foundation::RenderCore::PassHandle ImGui_ImplFoundation_CreatePass(Foundation::RenderCore::Renderer* renderer,
                                                                   Foundation::Core::StringView name, bool clear,
                                                                   FSetup&& setup, FRecordPrologue&& recordPrologue)
{
    using namespace Foundation;
    using namespace RenderCore;
    using namespace RHI;
    ResourceHandle vtxBuffer, idxBuffer, linSampler, nearSampler;
    ImGui_ImplFoundation_ImplCreateResources(renderer, vtxBuffer, idxBuffer, linSampler, nearSampler);
    return renderer->CreatePass(
        "ImGui", RHIDeviceQueueType::Graphics, 0u,
        [=](PassHandle self, Renderer* r)
        {
            ImGui_ImplFoundation_ImplPassSetup(self, r, vtxBuffer, idxBuffer, linSampler, nearSampler);
            setup(self, r);
        },
        [=](PassHandle self, Renderer* r, RHICommandList* cmd)
        {
            recordPrologue(self, r, cmd);
            ImGui_ImplFoundation_ImplPassRecord(self, r, clear, cmd, vtxBuffer, idxBuffer);
        });
}
 
template <typename FSetup>
Foundation::RenderCore::PassHandle ImGui_ImplFoundation_CreatePass(Foundation::RenderCore::Renderer* renderer, Foundation::Core::StringView name, bool clear, FSetup&& setup)
{
    return ImGui_ImplFoundation_CreatePass(renderer, name, clear, std::forward<FSetup>(setup),
                                           Foundation::RenderCore::FRecordDefault{});
}
 
 
void ImGui_ImplFoundation_SetupContextWithDefaultStyles();
// ^^^ APIs