// Include standard headers

#include <stdio.h>

#include <stdlib.h>

// Include GLEW

#include <GL/glew.h>

// Include GLFW

#include <glfw3.h>

GLFWwindow* window;

// Include GLM

#include <glm/glm.hpp>

using namespace glm;

int main( void )

{

    // Initialise GLFW

    if( !glfwInit() )

    {

        fprintf( stderr, "Failed to initialize GLFW\n" );

        getchar();

        return -;

    }

    glfwWindowHint(GLFW_SAMPLES, );

    glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, );

    glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, );

    glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GL_TRUE); // To make MacOS happy; should not be needed

    glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);

    // Open a window and create its OpenGL context

    window = glfwCreateWindow( , , "Tutorial 01", NULL, NULL);

    if( window == NULL ){

        fprintf( stderr, "Failed to open GLFW window. If you have an Intel GPU, they are not 3.3 compatible. Try the 2.1 version of the tutorials.\n" );

        getchar();

        glfwTerminate();

        return -;

    }

    glfwMakeContextCurrent(window);

    // Initialize GLEW

    if (glewInit() != GLEW_OK) {

        fprintf(stderr, "Failed to initialize GLEW\n");

        getchar();

        glfwTerminate();

        return -;

    }

    // Ensure we can capture the escape key being pressed below

    glfwSetInputMode(window, GLFW_STICKY_KEYS, GL_TRUE);

    // Dark blue background

    glClearColor(0.0f, 0.0f, 0.4f, 0.0f);

    do{

        // Clear the screen. It's not mentioned before Tutorial 02, but it can cause flickering, so it's there nonetheless.

        glClear( GL_COLOR_BUFFER_BIT );

        // Draw nothing, see you in tutorial 2 !

        // Swap buffers

        glfwSwapBuffers(window);

        glfwPollEvents();

    } // Check if the ESC key was pressed or the window was closed

    while( glfwGetKey(window, GLFW_KEY_ESCAPE ) != GLFW_PRESS &&

           glfwWindowShouldClose(window) ==  );

    // Close OpenGL window and terminate GLFW

    glfwTerminate();

    return ;

}