OpenGL in thread

[john_god]

did you use timers ?

[c0deland]

did you use timers ?

I tried with timers and now it works. This is what I have in the thread now:

void GLThread::start_simulation()
{
    connect(simtimer, SIGNAL(timeout()), this, SLOT(rotateOneStep()));
    simtimer->start(1);
}

void GLThread::start_simulation()
{
    connect(simtimer, SIGNAL(timeout()), this, SLOT(rotateOneStep()));
    simtimer->start(1);
}

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where:

void GLThread::rotateOneStep()
{
    i=i+Tspeed;
    emit changeVal(i);
}

void GLThread::rotateOneStep()
{
    i=i+Tspeed;
    emit changeVal(i);
}

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changeVal signal is connected with the openGL function which executes the rotation and has the updateGL() at the end.

Is this the only way to do this? or is it the best way?

[john_god]

I'm not sure but I think you should put glClear(...) in the initializeGL() function.
No need to keep calling it in paintGL() as you update drawings.