udateGL() with Nvidia&ATI

[bahbah30]

Hi,

my situation is following:

I write an app that have one QWidget. This widtget contains between 9 and 12 custom QGLWidget. Every custom QGLWidget get every 40 ms an image from a worker(which works in his one thread). I use PBO to copy imgaes in textur. And I use following connects:

connect(mCam, SIGNAL(renderedImage(const QImage &)), this, SLOT(updateTextur(const QImage &)));
    QTimer *timer = new QTimer();
    timer->start(40);
    connect(timer,SIGNAL(timeout()),this,SLOT(updateGL()),Qt::DirectConnection);

connect(mCam, SIGNAL(renderedImage(const QImage &)), this, SLOT(updateTextur(const QImage &)));
    QTimer *timer = new QTimer();
    timer->start(40);
    connect(timer,SIGNAL(timeout()),this,SLOT(updateGL()),Qt::DirectConnection);

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updateTextur is simple:

void OpenGLWidget::updateTextur(const QImage &image)
{
    if(image.byteCount() > 0)
    {
        mImg = QImage(image);
 
    }
}

void OpenGLWidget::updateTextur(const QImage &image)
{
    if(image.byteCount() > 0)
    {
        mImg = QImage(image);

    }
}

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Furthermore, I stop Time between painGL's invocation. And I get 47 ms with ATI and over 100 ms with NVidia!

Have sombody an idea why?

thanks!