udateGL() with Nvidia&ATI

[bahbah30]

I used gprof to profile my app, but i found nothing, becouse my app is multithreded. And I use minGW. So I can't profile my app.

I have main.cpp and 3 other classes. Worker is in itsown thread. In main-tread is my MainWindows and my OpenGLWidget. OpenGLWidget will be shown between 9 and 12 times in MainWindow. If is stop time in painGL using QTime:

void OpenGLWidget::paintGL()
{
        endTime1= t1.elapsed();//rest of the time
        t.start();
        paint();//openGL code
        endTime = t.elapsed(); //within paintGL
        t1.start();
}

void OpenGLWidget::paintGL()
{
        endTime1= t1.elapsed();//rest of the time
        t.start();
        paint();//openGL code
        endTime = t.elapsed(); //within paintGL
        t1.start();
}

To copy to clipboard, switch view to plain text mode 

endTime ist always 0. But the endTime1 is between 40 and 160 ms(with 12 widgets ) or 40 and 120 ms (with 9 widgets). But i do nothing in the rest of time. If I execute the same binary on ATI I get expected time (40 ms) Because :

QTimer *timer = new QTimer();
timer->start(40);
connect(timer,SIGNAL(timeout()),this,SLOT(updateGL()),Qt::DirectConnection);

QTimer *timer = new QTimer();
timer->start(40);
connect(timer,SIGNAL(timeout()),this,SLOT(updateGL()),Qt::DirectConnection);

To copy to clipboard, switch view to plain text mode 

Use QT driver specific way to show an app?

thanks!