QNX 6.6, Qt 5.3: black screen on QGraphicsView with QOpenGLWidget

[CerJo]

Hello!

I build two versions of the program that displays some graphic scene (QNX 6.6 + Qt 5.3). They are different by a line of code:
graphicsView-> setViewport (new QOpenGLWidget ()));
Without this code line, all the displays, but slow. With this code line displays a black screen (QGraphicsView is one black screen).

Default gears applications for test OpenGL is working.
I try to change QOpenGLWidget to QGLWidget - black screen.

In OS Windows both applications work, and application with QOpenGLWidget working fast.

How can I fix this?
Thanks for help.

P.S. Installing Qt 5.4 don't helped.