Method OpenGLWindow

ZEngine/src/SDL2Window/OpenGLWindow.cpp:16–60

namespace ZEngine::Window::SDLWin {

	OpenGLWindow::OpenGLWindow(WindowProperty& prop)
		: CoreWindow(), m_event(new SDL_Event{}, [](SDL_Event* e) { free(e); })

	{
		m_property = prop;
		int sdl_init = 0;
#ifdef _WIN32
		sdl_init = SDL_Init(SDL_INIT_EVERYTHING);
#else
		sdl_init = SDL_Init(SDL_INIT_TIMER | SDL_INIT_VIDEO | SDL_INIT_EVENTS);
#endif
		if (sdl_init != 0) {
			ZENGINE_CORE_CRITICAL("Unable to initialize SDL subsystems : {}", SDL_GetError());
			ZENGINE_EXIT_FAILURE();
		}

		const int loaded_gl_library = SDL_GL_LoadLibrary(NULL);
		if (loaded_gl_library != 0) {
			ZENGINE_CORE_CRITICAL("Failed to load OpenGL library...");
			ZENGINE_EXIT_FAILURE();
		}

		SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, 24);
		SDL_GL_SetAttribute(SDL_GL_STENCIL_SIZE, 8);
		SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);

		SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, SDL_GL_CONTEXT_PROFILE_CORE);
		SDL_GL_SetAttribute(SDL_GL_CONTEXT_FLAGS, 0);

#ifndef _WIN32
		m_desired_gl_context_major_version = 3;
		m_desired_gl_context_minor_version = 3;
#endif
		SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, m_desired_gl_context_major_version);
		SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, m_desired_gl_context_minor_version);

		m_native_window = SDL_CreateWindow(
			m_property.Title.c_str(), SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED,
			m_property.Width, m_property.Height,
			SDL_WINDOW_RESIZABLE | SDL_WINDOW_OPENGL | SDL_WINDOW_INPUT_FOCUS | SDL_WINDOW_MOUSE_CAPTURE
		);
		ZENGINE_CORE_INFO("Window created, Properties : Width = {0}, Height = {1}", m_property.Width, m_property.Height);
		
		SDL_SetWindowData(m_native_window, CoreWindow::ATTACHED_PROPERTY, &m_property);
	}

    bool OpenGLWindow::HasContext() const {
        return m_context != nullptr;