#include <iostream>
#define GLEW_STATIC
#include<GL/glew.h>
#include<GLFW/glfw3.h>

const GLint WIDTH = 900, HEIGHT = 600;

int main()
{
	glfwInit();

	glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
	glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);
	glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
	glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GL_TRUE);
	glfwWindowHint(GLFW_RESIZABLE, GL_FALSE);

	GLFWwindow *window = glfwCreateWindow(WIDTH, HEIGHT, "Learn OpenGL", nullptr, nullptr);

	int screenWidth, screenHeight;
	glfwGetFramebufferSize(window, &screenWidth, &screenHeight);

	if (nullptr == window)
	{
		std::cout << "Failed to create GLFW window" << std::endl;
		glfwTerminate();

		return EXIT_FAILURE;
	}

	glfwMakeContextCurrent(window);

	glewExperimental = GL_TRUE;

	if (GLEW_OK != glewInit())
	{
		std::cout << "Failed to initialize GLEW" << std::endl;

		return EXIT_FAILURE;
	}

	glViewport(0,0,screenWidth, screenHeight);

	while (!glfwWindowShouldClose(window))
	{
		glfwPollEvents();

		glClearColor(0.2f,0.3f,0.3f,1.0f);
		glClear(GL_COLOR_BUFFER_BIT);

		//draw stuff here!!!

		glfwSwapBuffers(window);
	}

	glfwTerminate();

	return EXIT_SUCCESS;
}