OpenGL draws model on QT platform to solve the problem of initializing VAO and VBO

Threads
Threads 1：MainWindow
Threads 2：QOpenGLWidget

Be careful QOpenGLWidget Refresh mechanism

skill
Initialize the model VAO、VAO and shader Put it in QOpenGLWidget Threads , And remember makeCurrent()

void GLWidget::on_getModel(GcodeModel *model)  // Public slot 
{
    makeCurrent();
    qDebug() << " Get the model ";
    qDebug() << " Model address " << model;
    this->model = model; // Get the model pointer for which the data has been prepared 
    this->model->initModel(); // initialization VAO、VAO and shader
    emit modelInited();
    doneCurrent();
}