我正在使用GLX pbuffer surface来渲染Linux中的OpenGL应用程序。

GLOffscreenBuffer::GLOffscreenBuffer(unsigned width, unsigned height)
    : m_width(width)
    , m_height(height)
    , m_display(XOpenDisplay(0))
    , m_pbuffer(0)
    , m_context(0)
{
    if (!m_display) {
        std::cerr << "Error: XOpenDisplay()\n";
        return;
    }

    static const int configAttributes[] = {
        GLX_DRAWABLE_TYPE, GLX_PBUFFER_BIT,
        GLX_RENDER_TYPE, GLX_RGBA_BIT,
        GLX_RED_SIZE, 8,
        GLX_GREEN_SIZE, 8,
        GLX_BLUE_SIZE, 8,
        GLX_ALPHA_SIZE, 8,
        GLX_DOUBLEBUFFER, GL_FALSE,
        0
    };
    int configCount;
    GLXFBConfig* config = glXChooseFBConfig(m_display, 0, configAttributes, &configCount);
    if (!configCount) {
        std::cerr << "Error: glXChooseFBConfig()\n";
        XFree(config);
        XCloseDisplay(m_display);
        return;
    }

    static const int pbufferAttributes[] = {
        GLX_PBUFFER_WIDTH, static_cast<int>(width),
        GLX_PBUFFER_HEIGHT, static_cast<int>(height),
        0
    };
    m_pbuffer = glXCreatePbuffer(m_display, config[0], pbufferAttributes);
    if (!m_pbuffer) {
        std::cerr << "Error: glXCreatePbuffer()\n";
        XFree(config);
        XCloseDisplay(m_display);
        return;
    }

    m_context = glXCreateNewContext(m_display, config[0], GLX_RGBA_TYPE, 0, GL_TRUE);
    XFree(config);
    if (!m_context) {
        std::cerr << "Error: glXCreateNewContext()\n";
        glXDestroyPbuffer(m_display, m_pbuffer);
        XCloseDisplay(m_display);
        return;
    }
}

但是我不知道在处理X11的大小调整事件时如何调整这个pbuffer表面的大小。如果你能提供一个演示就更好了。