如何在QOpenGLWidget中动态改变顶点？

#include <QOpenGLWidget>
#include <QOpenGLFunctions>

class MyOpenGLWidget : public QOpenGLWidget, protected QOpenGLFunctions
{
public:
    MyOpenGLWidget(QWidget *parent = nullptr) : QOpenGLWidget(parent) {}

protected:
    void initializeGL() override
    {
        initializeOpenGLFunctions();

        // 初始化顶点缓冲对象
        glGenBuffers(1, &m_vbo);
        glBindBuffer(GL_ARRAY_BUFFER, m_vbo);

        // 将顶点数据绑定到顶点缓冲对象
        GLfloat vertices[] = {
            // 顶点坐标
            -0.5f, -0.5f,
            0.5f, -0.5f,
            0.0f, 0.5f
        };
        glBufferData(GL_ARRAY_BUFFER, sizeof(vertices), vertices, GL_STATIC_DRAW);
    }

    void resizeGL(int w, int h) override
    {
        glViewport(0, 0, w, h);
    }

    void paintGL() override
    {
        glClear(GL_COLOR_BUFFER_BIT);

        // 绘制顶点
        glBindBuffer(GL_ARRAY_BUFFER, m_vbo);
        glEnableVertexAttribArray(0);
        glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 0, nullptr);
        glDrawArrays(GL_TRIANGLES, 0, 3);
        glDisableVertexAttribArray(0);
    }

private:
    GLuint m_vbo; // 顶点缓冲对象
};