mirror of
https://github.com/ggerganov/ggwave.git
synced 2026-02-07 01:11:22 +08:00
96 lines
3.7 KiB
C++
96 lines
3.7 KiB
C++
#include "imgui-extra/imgui_impl.h"
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#include "imgui-extra/imgui_impl_sdl.h"
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#include "imgui-extra/imgui_impl_opengl3.h"
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#if defined(IMGUI_IMPL_OPENGL_LOADER_GL3W)
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#include <GL/gl3w.h> // Initialize with gl3wInit()
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#elif defined(IMGUI_IMPL_OPENGL_LOADER_GLEW)
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#include <GL/glew.h> // Initialize with glewInit()
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#elif defined(IMGUI_IMPL_OPENGL_LOADER_GLAD)
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#include <glad/glad.h> // Initialize with gladLoadGL()
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#else
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#include IMGUI_IMPL_OPENGL_LOADER_CUSTOM
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#endif
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#include <SDL.h>
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ImGuiContext* ImGui_Init(SDL_Window* window, SDL_GLContext gl_context) {
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// Decide GL+GLSL versions
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#if __APPLE__
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// GL 3.2 Core + GLSL 150
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const char* glsl_version = "#version 150";
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SDL_GL_SetAttribute(SDL_GL_CONTEXT_FLAGS, SDL_GL_CONTEXT_FORWARD_COMPATIBLE_FLAG); // Always required on Mac
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SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, SDL_GL_CONTEXT_PROFILE_CORE);
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SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 3);
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SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 2);
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#else
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// GL 3.0 + GLSL 130
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const char* glsl_version = "#version 130";
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SDL_GL_SetAttribute(SDL_GL_CONTEXT_FLAGS, 0);
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SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, SDL_GL_CONTEXT_PROFILE_CORE);
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SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 3);
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SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 0);
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#endif
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// Create window with graphics context
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SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
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SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, 24);
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SDL_GL_SetAttribute(SDL_GL_STENCIL_SIZE, 8);
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static bool isInitialized = false;
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if (!isInitialized) {
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// Initialize OpenGL loader
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#if defined(IMGUI_IMPL_OPENGL_LOADER_GL3W)
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bool err = gl3wInit() != 0;
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#elif defined(IMGUI_IMPL_OPENGL_LOADER_GLEW)
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bool err = glewInit() != GLEW_OK;
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#elif defined(IMGUI_IMPL_OPENGL_LOADER_GLAD)
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bool err = gladLoadGL() == 0;
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#else
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bool err = false; // If you use IMGUI_IMPL_OPENGL_LOADER_CUSTOM, your loader is likely to requires some form of initialization.
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#endif
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if (err) {
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fprintf(stderr, "Failed to initialize OpenGL loader!\n");
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return nullptr;
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}
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isInitialized = true;
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}
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// Setup Dear ImGui context
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IMGUI_CHECKVERSION();
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auto ctx = ImGui::CreateContext();
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ImGui::SetCurrentContext(ctx);
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ImGuiIO& io = ImGui::GetIO(); (void)io;
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//io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard; // Enable Keyboard Controls
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//io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad; // Enable Gamepad Controls
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// Setup Platform/Renderer bindings
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bool res = true;
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res &= ImGui_ImplSDL2_InitForOpenGL(window, gl_context);
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#ifdef __EMSCRIPTEN__
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res &= ImGui_ImplOpenGL3_Init("#version 300 es");
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#else
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res &= ImGui_ImplOpenGL3_Init(glsl_version);
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#endif
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return res ? ctx : nullptr;
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}
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void ImGui_Shutdown() { ImGui_ImplOpenGL3_Shutdown(); ImGui_ImplSDL2_Shutdown(); }
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void ImGui_NewFrame(SDL_Window* window) { ImGui_ImplOpenGL3_NewFrame(); ImGui_ImplSDL2_NewFrame(window); ImGui::NewFrame(); }
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bool ImGui_ProcessEvent(const SDL_Event* event) { return ImGui_ImplSDL2_ProcessEvent(event); }
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void ImGui_RenderDrawData(ImDrawData* draw_data) { ImGui_ImplOpenGL3_RenderDrawData(draw_data); }
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bool ImGui_CreateFontsTexture() { return ImGui_ImplOpenGL3_CreateFontsTexture(); }
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void ImGui_DestroyFontsTexture() { ImGui_ImplOpenGL3_DestroyFontsTexture(); }
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bool ImGui_CreateDeviceObjects() { return ImGui_ImplOpenGL3_CreateDeviceObjects(); }
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void ImGui_DestroyDeviceObjects() { ImGui_ImplOpenGL3_DestroyDeviceObjects(); }
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void ImGui_SaveState(int id) { ImGui_ImplSDL2_SaveState(id); ImGui_ImplOpenGL3_SaveState(id); }
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void ImGui_LoadState(int id) { ImGui_ImplSDL2_LoadState(id); ImGui_ImplOpenGL3_LoadState(id); }
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