glGetString(GL_VERSION）返回1.1.0，尽管该卡支持2.1

我在SDL2和OpenGL方面遇到了一个小问题。我一直在尝试让VBO工作（特别是ARB对象），但到目前为止都没有成功。通过各种搜索，我发现了GL.h是多么古老，并选择了glew.h，从而允许我使用1.1之后的功能。

在尝试使用glGenBuffersARB时，我发现即使在调用glewInit之后，函数指针也是空的。

然而，visualinfo报告OpenGL是2.1.0，并且GL_ARB_vertex_buffer_object可以访问——SDL上下文似乎默认为Microsoft的1.1.0，并且不允许我更正空指针。

我（很遗憾）使用的是Acer Aspire 5733上的Intel HD Graphics芯片组。

如何让SDL识别芯片组上的2.1.0？（或者我的做法完全错了吗？）

编辑

以下是请求的代码：

astralmin.cpp（inits SDL+OpenGL上下文）

bool AstralGame::onInit()
{
    if (SDL_Init(SDL_INIT_EVERYTHING) < 0) return false;
    SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 2);
    SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 1);
    SDL_GL_SetAttribute(SDL_GL_MULTISAMPLEBUFFERS, 1);
    SDL_GL_SetAttribute(SDL_GL_MULTISAMPLESAMPLES, 2);
    SDL_GL_SetAttribute(SDL_GL_RED_SIZE, 5);
    SDL_GL_SetAttribute(SDL_GL_GREEN_SIZE, 5);
    SDL_GL_SetAttribute(SDL_GL_BLUE_SIZE, 5);
    SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
    SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, 32);
    SDL_GL_SetAttribute(SDL_GL_ACCELERATED_VISUAL, 1);
    if ((currWindow = SDL_CreateWindow(ASTRAL_TITLE" "ASTRAL_VERSION, 100, 100, 800, 600, SDL_WINDOW_RESIZABLE | SDL_WINDOW_OPENGL)) == nullptr)
    {
        a_ErrorManager::panic("Window couldn't be createdn");
        return false;
    }
    if ((currContext = SDL_GL_CreateContext(currWindow)) == NULL)
    {
        a_ErrorManager::panic("OpenGl context couldn't be createdn");
    }
    printf((char*)glGetString(GL_VERSION));
    glewExperimental = TRUE;
    glewInit();
    SDL_GL_SetSwapInterval(1);
    textureManager->startUp();
    errorManager->startUp();
    renderManager->startUp();
    if (glGenBuffersARB == nullptr) printf("This entire program will not work!");
    cube = new a_GL_Cube(textureManager->getTexture("astral")->texture);
    //Start initting GL functions
    glShadeModel(GL_SMOOTH);
    glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
    glClearDepth(1.0f);
    glEnable(GL_DEPTH_TEST);
    glDepthFunc(GL_LEQUAL);
    glEnable(GL_TEXTURE_2D);
    glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
    cube->buildVert(1.0f);
    return true;
}

a_GL3DPrimitives.cpp（为多维数据集构建顶点，出现错误）

void a_GL_Cube::buildVert(float size)
{
    float pVt[72] = { -size, -size, size, -size, size, size, size, size, size, size, -size, size,
        size, -size, size, size, -size, -size, size, size, -size, size, size, size,
        size, size, size, -size, size, size, -size, size, -size, size, size, -size,
        size, size, -size, size, -size, -size, -size, -size, -size, -size, size, -size,
        -size, size, size, -size, size, -size, -size, -size, -size, -size, -size, size,
        -size, -size, size, -size, -size, -size, size, -size, -size, size, -size, size };
    float pTt[48] = { 0.0, 0.0, 1.0, 0.0, 1.0, 1.0, 0.0, 1.0,
        0.0, 0.0, 1.0, 0.0, 1.0, 1.0, 0.0, 1.0,
        0.0, 0.0, 1.0, 0.0, 1.0, 1.0, 0.0, 1.0,
        0.0, 0.0, 1.0, 0.0, 1.0, 1.0, 0.0, 1.0,
        0.0, 0.0, 1.0, 0.0, 1.0, 1.0, 0.0, 1.0,
        0.0, 0.0, 1.0, 0.0, 1.0, 1.0, 0.0, 1.0 };
    vboVName = 0;
    vboTName = 0;
    unsigned int* test = &vboVName;
    glGenBuffersARB(1, &vboVName); <======= Null Pointer
    glBindBufferARB(GL_ARRAY_BUFFER_ARB, vboVName);
    glBufferDataARB(GL_ARRAY_BUFFER_ARB, sizeof(float)* 72, pVt, GL_STATIC_DRAW_ARB);
    glGenBuffersARB(1, &vboTName);
    glBindBufferARB(GL_ARRAY_BUFFER_ARB, vboTName);
    glBufferDataARB(GL_ARRAY_BUFFER_ARB, sizeof(float)* 48, pTt, GL_STATIC_DRAW_ARB);
    delete[] pVt;
    delete[] pTt;
}