// Original code by opengl-tutorials.org

// Include standard headers
#include <stdio.h>
#include <stdlib.h>

// Include GLEW
#include <GL/glew.h>

// Include GLFW
#include <GL/glfw.h>

// Include GLM
#include <glm/glm.hpp>
using namespace glm;

int main( void )
{
        GLFWwindow* window;

        // Initialise GLFW
        if( !glfwInit() )
        {
                fprintf( stderr, "Failed to initialize GLFW\n" );
                return -1;
        }

        glfwWindowHint(GLFW_FSAA_SAMPLES, 4);
        glfwWindowHint(GLFW_OPENGL_VERSION_MAJOR, 3);
        glfwWindowHint(GLFW_OPENGL_VERSION_MINOR, 3);
        glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);

        // Create the window
        window = glfwCreateWindow( 1024, 768, "Hello World", 0, 0);

        // Open a window and create its OpenGL context
        if( !window )
        {
                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" );
                glfwTerminate();
                return -1;
        }

        // Initialize GLEW
        if (glewInit() != GLEW_OK) {
                fprintf(stderr, "Failed to initialize GLEW\n");
                return -1;
        }

        // Set window as the one we currently use
        glfwMakeContextCurrent(window);

        // 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{
                // Draw nothing, see you in tutorial 2 !

                // Swap buffers
                glfwSwapBuffers(window);

                // Update events for the window
                glfwPollEvents()

        } // Check if the ESC key was pressed or the window was closed
        while( !glfwWindowShouldClose(window) );

        // Close OpenGL window and terminate GLFW
        glfwTerminate();

        return 0;
}