하 몇시간만에 헤매고 헤매서 에러없이 컴파일했는데 고작 한문장 찍히는거 실화냐 

내가 원하는건 까만창에 삼각형 트라이앵글이 똭 뜨는거라구!! 


#include <glad/glad.h>

#include <GLFW/glfw3.h>


#include <iostream>


void framebuffer_size_callback(GLFWwindow* window, int width, int height);

void processInput(GLFWwindow *window);


// settings

const unsigned int SCR_WIDTH = 800;

const unsigned int SCR_HEIGHT = 600;


int main()

{

    // glfw: initialize and configure

    // ------------------------------

    glfwInit();

    glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);

    glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);

    glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);


#ifdef __APPLE__

    glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GL_TRUE);

#endif


    // glfw window creation

    // --------------------

    GLFWwindow* window = glfwCreateWindow(SCR_WIDTH, SCR_HEIGHT, "LearnOpenGL", NULL, NULL);

    if (window == NULL)

    {

        std::cout << "Failed to create GLFW window" << std::endl;

        glfwTerminate();

        return -1;

    }

    glfwMakeContextCurrent(window);

    glfwSetFramebufferSizeCallback(window, framebuffer_size_callback);


    // glad: load all OpenGL function pointers

    // ---------------------------------------

    if (!gladLoadGLLoader((GLADloadproc)glfwGetProcAddress))

    {

        std::cout << "Failed to initialize GLAD" << std::endl;

        return -1;

    }


    // render loop

    // -----------

    while (!glfwWindowShouldClose(window))

    {

        // input

        // -----

        processInput(window);


        // render

        // ------

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

        glClear(GL_COLOR_BUFFER_BIT);


        // glfw: swap buffers and poll IO events (keys pressed/released, mouse moved etc.)

        // -------------------------------------------------------------------------------

        glfwSwapBuffers(window);

        glfwPollEvents();

    }


    // glfw: terminate, clearing all previously allocated GLFW resources.

    // ------------------------------------------------------------------

    glfwTerminate();

    return 0;

}


// process all input: query GLFW whether relevant keys are pressed/released this frame and react accordingly

// ---------------------------------------------------------------------------------------------------------

void processInput(GLFWwindow *window)

{

    if(glfwGetKey(window, GLFW_KEY_ESCAPE) == GLFW_PRESS)

        glfwSetWindowShouldClose(window, true);

}


// glfw: whenever the window size changed (by OS or user resize) this callback function executes

// ---------------------------------------------------------------------------------------------

void framebuffer_size_callback(GLFWwindow* window, int width, int height)

{

    // make sure the viewport matches the new window dimensions; note that width and

    // height will be significantly larger than specified on retina displays.

    glViewport(0, 0, width, height);

}


ghk02@ubuntu:~$ g++ breakout.cpp /usr/include/src/glad.c -lglfw -lGL -lGLU -lglut -ldl

ghk02@ubuntu:~$ ./a.out

Failed to create GLFW window


현타 씨게온다 ㄹㅇ ㅋㅋㅋ 이거 해결법 아는 고수 어디없을라나 ㅇㅅㅇ