imgui impl

Author: HeliumAnt

Source/GUI/meson.build

@@ -34,3 +34,5 @@ sources += files(
 'GUIUtil.cpp',
 'GUIWriter.cpp'
 )
+
+subdir('imgui')

Source/Main.cpp

@@ -56,6 +56,8 @@
 #include "RenderTarget.h"
 #include "tracy/Tracy.hpp"
 
+#include "imgui_impl_sdl3.h"
+
 #ifdef _WIN32
 #include "windows.h"
 #endif
@@ -232,6 +234,7 @@ void PollSDLEvents() {
 			default:
 				break;
 		}
+		ImGui_ImplSDL3_ProcessEvent(&sdlEvent);
 		if (sdlEvent.type >= SDL_EVENT_WINDOW_FIRST && sdlEvent.type <= SDL_EVENT_WINDOW_LAST) {
 			g_WindowMan.QueueWindowEvent(sdlEvent);
 		}

Source/Managers/WindowMan.cpp

@@ -21,6 +21,10 @@
 #include "tracy/Tracy.hpp"
 #include "tracy/TracyOpenGL.hpp"
 
+#include "GUI/imgui/imgui.h"
+#include "GUI/imgui/backends/imgui_impl_sdl3.h"
+#include "GUI/imgui/backends/imgui_impl_opengl3.h"
+
 #ifdef __linux__
 #include "Resources/cccp.xpm"
 #include <SDL3_image/SDL_image.h>
@@ -81,6 +85,9 @@ WindowMan::WindowMan() {
 WindowMan::~WindowMan() = default;
 
 void WindowMan::Destroy() {
+	ImGui_ImplOpenGL3_Shutdown();
+	ImGui_ImplSDL3_Shutdown();
+	ImGui::DestroyContext();
 	GL_CHECK(glDeleteTextures(1, &m_BackBuffer32Texture));
 	GL_CHECK(glDeleteBuffers(1, &m_ScreenVBO));
 	GL_CHECK(glDeleteVertexArrays(1, &m_ScreenVAO));
@@ -105,6 +112,20 @@ void WindowMan::Initialize() {
 	SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, SDL_GL_CONTEXT_PROFILE_CORE);
 	CreatePrimaryWindow();
 	InitializeOpenGL();
+
+	IMGUI_CHECKVERSION();
+	ImGui::CreateContext();
+	ImGuiIO& io = ImGui::GetIO();
+	io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad;
+	io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad;
+
+	ImGui::StyleColorsDark();
+	ImGui_ImplSDL3_InitForOpenGL(m_PrimaryWindow.get(), m_GLContext.get());
+	ImGui_ImplOpenGL3_Init("#version 130");
+	ImGui_ImplOpenGL3_NewFrame();
+	ImGui_ImplSDL3_NewFrame();
+	ImGui::NewFrame();
+
 	CreateBackBufferTexture();
 	m_ScreenBlitShader = std::make_unique<Shader>(g_PresetMan.GetFullModulePath("Base.rte/Shaders/ScreenBlit.vert"), g_PresetMan.GetFullModulePath("Base.rte/Shaders/ScreenBlit.frag"));
 
@@ -760,9 +781,14 @@ void WindowMan::UploadFrame() {
 			rlDrawRenderBatchActive();
 		}
 	}
+	ImGui::Render();
+	ImGui_ImplOpenGL3_RenderDrawData(ImGui::GetDrawData());
 	Present();
 	TracyGpuCollect;
 	FrameMark;
+	ImGui_ImplOpenGL3_NewFrame();
+	ImGui_ImplSDL3_NewFrame();
+	ImGui::NewFrame();
 }
 
 void WindowMan::Present() {