#include <stdio.h>
#include <stdlib.h>
#include <opengl/glew.h>
#include <opengl/glfw3.h>
#include <glm\glm.hpp>
using namespace glm;

int main()
{
    if(!glfwInit())
    {
        printf("\nFailed to initialize GLFW.");
        return -1;
    }

    GLFWwindow *window;

    glfwWindowHint(GLFW_SAMPLES, 4);
    glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
    glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);
    glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);

    window = glfwCreateWindow(1024, 768, "Simple example", NULL, NULL);
    if(!window)
    {
        printf("\nFailed to create window.");
        glfwTerminate();
        return -1;
    }

    glfwMakeContextCurrent(window);

    glewExperimental = true;
    if(glewInit() != GLEW_OK)
    {
        printf("\nFailed to initialize GLEW.");
        glfwTerminate();
        return -1;
    }

    GLuint VertexArrayID;
    glGenVertexArrays(1, &VertexArrayID);
    glBindVertexArray(VertexArrayID);

    static const GLfloat g_vertex_buffer_data[] = {
        -1.0f, -1.0f, 0.0f,
         1.0f, -1.0f, 0.0f,
         0.0f,  1.0f, 0.0f
    };

    GLuint vertexBuffer;
    glGenBuffers(1, &vertexBuffer);
    glBindBuffer(GL_ARRAY_BUFFER, vertexBuffer);
    glBufferData(GL_ARRAY_BUFFER, sizeof(g_vertex_buffer_data), g_vertex_buffer_data, GL_STATIC_DRAW);

    while(!glfwWindowShouldClose(window))
    {
        glEnableVertexAttribArray(0);
        glBindBuffer(GL_ARRAY_BUFFER, vertexBuffer);
        glVertexAttribPointer(0,3,GL_FLOAT, GL_FALSE, 0 , (void*)0);
        glDrawArrays(GL_TRIANGLES, 0,3);
        glDisableVertexAttribArray(0);

        glfwSwapBuffers(window);
        glfwPollEvents();
    }

    glfwDestroyWindow(window);
    glfwTerminate();
    return 0;
}