GLFW无法在Mavericks上获取OpenGL 4.1上下文

Question

我正在尝试使用GLFW在mac上获得版本2以上的OpenGL上下文。我的配置是Mavericks(10.9.1)+XCode，我有一个Nvidia Geforce 650M GPU，可能支持OpenGL4.1的完整配置文件。我使用以下代码：

    static void test_error_cb (int error, const char *description)
{
    fprintf(stderr, "%d: %s\n", error, description);
}

glfwSetErrorCallback(test_error_cb);

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


//Request Specific Version
glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 2);
glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GL_TRUE);
glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);

// Open OpenGL window
window = glfwCreateWindow(500, 500, "Split view demo", NULL, NULL);
if (!window)
{
    fprintf(stderr, "Failed to open GLFW window\n");

    glfwTerminate();
    exit(EXIT_FAILURE);
}

// Set callback functions
glfwSetFramebufferSizeCallback(window, framebufferSizeFun);
glfwSetWindowRefreshCallback(window, windowRefreshFun);
glfwSetCursorPosCallback(window, cursorPosFun);
glfwSetMouseButtonCallback(window, mouseButtonFun);
glfwSetKeyCallback(window, key_callback);

// Enable vsync
glfwMakeContextCurrent(window);
glfwSwapInterval(1);

glfwGetFramebufferSize(window, &width, &height);
framebufferSizeFun(window, width, height);

//Check Version
int major, minor, rev;
major = glfwGetWindowAttrib(window, GLFW_CONTEXT_VERSION_MAJOR);
minor = glfwGetWindowAttrib(window, GLFW_CONTEXT_VERSION_MINOR);
rev = glfwGetWindowAttrib(window, GLFW_CONTEXT_REVISION);
printf("OpenGL version recieved: %d.%d.%d\n", major, minor, rev);
printf("Supported OpenGL is %s\n", (const char*)glGetString(GL_VERSION));
printf("Supported GLSL is %s\n", (const char*)glGetString(GL_SHADING_LANGUAGE_VERSION));


// Main loop
for (;;)
{
    // Only redraw if we need to
    if (do_redraw)
    {
        // Draw all views
        drawAllViews();

        // Swap buffers
        glfwSwapBuffers(window);

        do_redraw = 0;
    }

    // Wait for new events
    glfwWaitEvents();

    // Check if the window should be closed
    if (glfwWindowShouldClose(window))
        break;
}

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

exit(EXIT_SUCCESS);

当前glfwCreateWindow函数失败。如果没有任何提示（即没有glfwWindowHint调用），我只能使用OpenGL2.1，glsl版本为1.20。劝告。

Answer 1

在OSX上访问大于2.1的GL版本需要核心上下文。

取消对glfw_opengl_profile提示的注释。