qt5 위젯에 도형 애니메이션 만들려고 합니다 (스레드사용)

void MainWindow::on_pushButton_clicked()
{ //start
    qDebug() <<"start click";
    ui->widget->mThread->start();
}

GLWidget::GLWidget(QWidget *parent) :
    QGLWidget(parent)
{
    initializeGL();
    setFormat(QGLFormat(QGL::DoubleBuffer | QGL::DepthBuffer));
    mThread = new MyThread(this);
    mThread->Stop = false;
    connect(mThread,SIGNAL(signalrender()),this,SLOT(playRender()));
}

void MyThread::run(){
 
    qDebug() << "run!";
 
    while(true){
        QMutex mutex;
        mutex.lock();
        if(this->Stop) break;
        mutex.unlock();
        emit signalrender();
        this->msleep(1);
    }
 
}

void GLWidget::playRender()
{
    if(currentFrame <= markerData.frameSize){
        currentFrame++;
        updateGL();
    }
    updateGL();
}

void GLWidget::paintGL(){
...
    for(int i=0;i<markerData.frameSize;i++){
        glTranslatef(markerData[i].x,markerData[i].y,markerData[i].z);
        gluSphere(p,15,35,35);
...
}