Change rviz opengl version on Qt app, python

edit

Hi! Do to a problem displaying markers on Rviz, i have to force an older OpenGL version while launching Rviz, this is running it with the --opengl flag on the terminal.

Is there a way to do it while runing Rviz from a script on python? Right now im following this tutorial to display Rviz inside my Qt app, and there is no documentation about forcing an OpenGL version.

Im using ROS noetic, Python 3.8 on Ubuntu 20.04 and Rviz version 1.14.4

Thanks!