#include <stdio.h>

#include "GL/glew.h"
#include "GL/glu.h"
#include "GLFW/glfw3.h"
#include <thread>

GLuint errorCode;

void error(int error, const char* description)
{
        printf("%i, %s\n", error, description);
}

void draw()
{

        int i;
        glGetIntegerv(GL_DRAW_BUFFER0, &i);

        printf("%i\n", i); //1029 on xubuntu 13.10

        GLfloat red[] = {1.0f, 0.0f, 0.0f, 1.0f};
        glClearBufferfv(GL_COLOR, i, red);
        errorCode = glGetError();
        if(errorCode != GL_NO_ERROR)
                printf("%i, %s\n", errorCode, gluErrorString(errorCode));
}

int main()
{
        glewExperimental = true;
        if(glfwInit() == -1) return -1;
        glfwSetErrorCallback(error);

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

        glfwWindowHint(GLFW_RESIZABLE, GL_FALSE);

        GLFWwindow* window = glfwCreateWindow(800, 600, "OpenGL", NULL, NULL);
        if(!window) 
        {
                printf("Window Creation Failed");
                return -1;
        }

        glfwMakeContextCurrent(window);
        glewInit();

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

                if(glfwGetKey(window, GLFW_KEY_ESCAPE) == GLFW_PRESS) 
                        glfwSetWindowShouldClose(window, GL_TRUE);

                draw();
        }

        glfwTerminate();
}