QOpenGLWidget and specific functions version ?

[Dariusz]

Hey

I'm trying to set up my openGL to use specific version & get functions from it... So

//// Set format in constructor
myGl::myGl(){
    QSurfaceFormat format;
    format.setMajorVersion(4); //whatever version
    format.setMinorVersion(5); //
    format.setProfile(QSurfaceFormat::CoreProfile);
    QSurfaceFormat::setDefaultFormat(format);
}
myGl::initializeGL(){
    makeCurrent(); /// Just to be sure...
    mFunctions = new QOpenGLFunctions_4_5_Core(); //// specify functions version ?
    mFunctions->initializeOpenGLFunctions(); /// crash ?
}
////
FATAL: ASSERT: "QOpenGLFunctions::isInitialized(d_ptr)" in file c:\users\qt\work\qt\qtbase\include\qtgui\../../src/gui/opengl/qopenglfunctions.h, line 887
(c:\users\qt\work\qt\qtbase\include\qtgui\../../src/gui/opengl/qopenglfunctions.h:887, (null))

I wish to have the specific functions as member in order to pass it to my scene manager to get called from rather than inheriting QOpenGLFunctions_xx a number of times in different nodes...

Initially I tried this but this seems to not be compatible(?)

    mFunctions = context()->functions();
or
    mFunctions = static_cast<QOpenGLFunctions_4_5_Core*>(context()->functions());

What am I doing wrong here?

I noticed that QOpenGLFunctions seems to not have some openGL calls, so I pass the specific version to all my nodes that needs access to it... unless ?

I followed this topic but seem to not work? https://stackoverflow.com/questions/28235640/using-latest-opengl-functions-across-classes-in-qt-5-4