Set global Qt OpenGL flags only once
Set global Qt OpenGL flags only once

MITK/MITK,MITK/MITK,fmilano/mitk,fmilano/mitk,fmilano/mitk,fmilano/mitk,fmilano/mitk,fmilano/mitk,MITK/MITK,MITK/MITK,MITK/MITK,fmilano/mitk,MITK/MITK