OpenGL surfaces frozen (QGLWidget)

[ddonate]

Hi,

I have a problem with QGLWidgets, and it seems to be something related to one specific Pc, since my project works properly in other Pcs.

I use:
Qt 4.8.3
Windows 7
Graphic Card: Intel GMA 3000

I can create several OpenGL surfaces, BUT when I close the last one created (that seems to be the pattern), all previously created surfaces get frozen. If then I create a new one, all of them get unfrozen and all works properly again.

For example, this code in my application works:

bool MyClass::init()
{
  ...
  {        
    QGLWidget* w1 = new QGLWidget();
 
    [do something with w1]
  }
 
  [application works, w1 is NOT frozen]
  ...
}

bool MyClass::init()
{
  ...
  {        
    QGLWidget* w1 = new QGLWidget();

    [do something with w1]
  }

  [application works, w1 is NOT frozen]
  ...
}

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But with this code my OpenGL surfaces get frozen, since w2 is deleted...

bool MyClass::init()
{
  ...   
  {        
    QGLWidget* w1 = new QGLWidget();
 
    [do something with w1]
  }
 
  {        
    QGLWidget w2;
  }
 
  [w1 IS frozen]
  ...
}

bool MyClass::init()
{
  ...   
  {        
    QGLWidget* w1 = new QGLWidget();

    [do something with w1]
  }

  {        
    QGLWidget w2;
  }

  [w1 IS frozen]
  ...
}

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I hope someone could help me...

Thanks in advance,

Diego

[wysota]

I would assume you have broken OpenGL drivers for your graphics chip.

[d_stranz]

{
QGLWidget w2;
}

You don't really mean you're creating a QGLWidget on the stack, do you?

[wysota]

I think he is. The point is that the widget is created and deleted.