Window.cpp

#include "Window.h"
#include "Errors.h"
#include <GL\glew.h>

namespace NeroEngine{
	Window::Window()
	{
	}


	Window::~Window()
	{
	}
	int Window::create(std::string windowName, int screenWidth, int screenHeight, unsigned int currentFlags){

		Uint32 flags = SDL_WINDOW_OPENGL;
		if (currentFlags & INVISABLE){
			flags |= SDL_WINDOW_HIDDEN;
		}
		if (currentFlags & FULLSCREEN){
			flags |= SDL_WINDOW_FULLSCREEN_DESKTOP;
		}
		if (currentFlags & BORDERLESS){
			flags |= SDL_WINDOW_BORDERLESS;
		}

		_sdlWindow = SDL_CreateWindow(windowName.c_str(), SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, screenWidth, screenHeight, flags);
		if (_sdlWindow == nullptr){
			fatalError("SDL window could not be created!");
		}

		SDL_GLContext glContext = SDL_GL_CreateContext(_sdlWindow);
		if (glContext == nullptr){
			fatalError("SDL_GL context could not be created!");
		}

		GLenum error = glewInit();
		if (error != GLEW_OK){
			fatalError("Could not initialize glew");
		}

		//¼ì²éopengl°æ±¾
		printf("***OpenGL Version:%s***\n", glGetString(GL_VERSION));

		glClearColor(0.0f, 0.0f, 1.0f, 1.0f);
		//VSYNC
		SDL_GL_SetSwapInterval(0);

		//open alpha
		glEnable(GL_BLEND);
		glBlendFunc(GL_SRC_ALPHA,GL_ONE_MINUS_SRC_ALPHA);
		return 0;
	}
	void Window::swapBuffer(){
		SDL_GL_SwapWindow(_sdlWindow);
	}
}