Question

我在C ++上编写了一些OpenGL 3程序，现在我的笔记本电脑联想Thinkpad e320（Intel HD Graphics 3000）出现了问题。它在我的电脑上运行良好（ATI Radeon HD 5870）。

错误附近的代码如下：

bool GLWindowCreate(const char *title, int width, int height, bool fullScreen){
...
    g_hRC = wglCreateContextAttribsARB(g_hDC, 0, attribs);
    if (!g_hRC || !wglMakeCurrent(g_hDC, g_hRC))
    {
        LOG_ERROR("Creating render context fail (%d)\n", GetLastError());
        return false;
    }
...
}

所有编译都很好，我在日志文件中看到了这个错误。

我使用的是Windows 8（包括PC和笔记本电脑）。笔记本电脑上的显卡支持OpenGL 3.我已经找到了一些关于我需要关闭硬件加速的相同问题的答案，但似乎在Win 8中无法做到这一点。

加了：

整个窗口创建功能：

bool GLWindowCreate(const char *title, int width, int height, bool fullScreen)
{
    ASSERT(title);
    ASSERT(width > 0);
    ASSERT(height > 0);

    WNDCLASSEX            wcx;
    PIXELFORMATDESCRIPTOR pfd;
    RECT                  rect;
    HGLRC                 hRCTemp;
    DWORD                 style, exStyle;
    int                   x, y, format;

    memset(&g_window, 0, sizeof(g_window));

    memset(&g_input, 0, sizeof(g_input));

    PFNWGLCREATECONTEXTATTRIBSARBPROC wglCreateContextAttribsARB = NULL;

    // attributes for OpenGL context
    int attribs[] =
    {
        WGL_CONTEXT_MAJOR_VERSION_ARB, 3,
        WGL_CONTEXT_MINOR_VERSION_ARB, 3,
        WGL_CONTEXT_FLAGS_ARB,         WGL_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB,
        WGL_CONTEXT_PROFILE_MASK_ARB,  WGL_CONTEXT_CORE_PROFILE_BIT_ARB,
        0
    };

    // timer init
    QueryPerformanceFrequency(&g_qpc);
    ASSERT(g_qpc.QuadPart > 0);

    g_timerFrequency = 1.0 / g_qpc.QuadPart;

    g_hInstance = (HINSTANCE)GetModuleHandle(NULL);

    memset(&wcx, 0, sizeof(wcx));
    wcx.cbSize        = sizeof(wcx);
    wcx.style         = CS_HREDRAW | CS_VREDRAW | CS_OWNDC;
    wcx.lpfnWndProc   = (WNDPROC)GLWindowProc;
    wcx.hInstance     = g_hInstance;
    wcx.lpszClassName = GLWINDOW_CLASS_NAME;
    wcx.hIcon         = LoadIcon(NULL, IDI_APPLICATION);
    wcx.hCursor       = LoadCursor(NULL, IDC_ARROW);

    if (!RegisterClassEx(&wcx))
    {
        LOG_ERROR("RegisterClassEx fail (%d)\n", GetLastError());
        return false;
    }

    style   = WS_CAPTION | WS_SYSMENU | WS_MINIMIZEBOX;
    exStyle = WS_EX_APPWINDOW;

    x = (GetSystemMetrics(SM_CXSCREEN) - width)  / 2;
    y = (GetSystemMetrics(SM_CYSCREEN) - height) / 2;

    rect.left   = x;
    rect.right  = x + width;
    rect.top    = y;
    rect.bottom = y + height;

    AdjustWindowRectEx (&rect, style, FALSE, exStyle);

    // creating window
    g_hWnd = CreateWindowEx(exStyle, GLWINDOW_CLASS_NAME, title, style, rect.left, rect.top,
        rect.right - rect.left, rect.bottom - rect.top, NULL, NULL, g_hInstance, NULL);

    if (!g_hWnd)
    {
        LOG_ERROR("CreateWindowEx fail (%d)\n", GetLastError());
        return false;
    }

        // get window descriptor
    g_hDC = GetDC(g_hWnd);

    if (!g_hDC)
    {
        LOG_ERROR("GetDC fail (%d)\n", GetLastError());
        return false;
    }

    memset(&pfd, 0, sizeof(pfd));
    pfd.nSize      = sizeof(pfd);
    pfd.nVersion   = 1;
    pfd.dwFlags    = PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER;
    pfd.iPixelType = PFD_TYPE_RGBA;
    pfd.cColorBits = 32;
    pfd.cDepthBits = 24;

    // get pixel format
    format = ChoosePixelFormat(g_hDC, &pfd);
    if (!format || !SetPixelFormat(g_hDC, format, &pfd))
    {
        LOG_ERROR("Setting pixel format fail (%d)\n", GetLastError());
        return false;
    }

    // creating temp context
    // to get wglCreateContextAttribsARB function
    hRCTemp = wglCreateContext(g_hDC);
    if (!hRCTemp || !wglMakeCurrent(g_hDC, hRCTemp))
    {
        LOG_ERROR("Сreating temp render context fail (%d)\n", GetLastError());
        return false;
    }

    OPENGL_GET_PROC(PFNWGLCREATECONTEXTATTRIBSARBPROC, wglCreateContextAttribsARB);

    // delete temp context
    wglMakeCurrent(NULL, NULL);
    wglDeleteContext(hRCTemp);

    // creating OpenGL 3 context
    g_hRC = wglCreateContextAttribsARB(g_hDC, 0, attribs);
    if (!g_hRC || !wglMakeCurrent(g_hDC, g_hRC))
    {
        LOG_ERROR("Creating render context fail (%d)\n", GetLastError());
        return false;
    }

    int major, minor;
    glGetIntegerv(GL_MAJOR_VERSION, &major);
    glGetIntegerv(GL_MINOR_VERSION, &minor);
    LOG_DEBUG("OpenGL render context information:\n"
        "  Renderer       : %s\n"
        "  Vendor         : %s\n"
        "  Version        : %s\n"
        "  GLSL version   : %s\n"
        "  OpenGL version : %d.%d\n",
        (const char*)glGetString(GL_RENDERER),
        (const char*)glGetString(GL_VENDOR),
        (const char*)glGetString(GL_VERSION),
        (const char*)glGetString(GL_SHADING_LANGUAGE_VERSION),
        major, minor
    );

    if (!OpenGLInitExtensions())
        return false;

    GLWindowSetSize(width, height, fullScreen);

    return true;
}

Answer 1

我不小心找到了决定。有问题：

int attribs[] =
    {
        WGL_CONTEXT_MAJOR_VERSION_ARB, 3,
        WGL_CONTEXT_MINOR_VERSION_ARB, 3,
        WGL_CONTEXT_FLAGS_ARB,         WGL_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB,
        WGL_CONTEXT_PROFILE_MASK_ARB,  WGL_CONTEXT_CORE_PROFILE_BIT_ARB,
        0
    };

Intel HD Graphics 3000仅支持OpenGL 3.1，而不支持3.3，所以我不得不改变

WGL_CONTEXT_MINOR_VERSION_ARB, 3,

到

WGL_CONTEXT_MINOR_VERSION_ARB, 1,

谢谢大家，对不起担心，希望我的问题解决方案可以帮助某人

OpenGL创建渲染上下文失败

1 个答案: