Run vis_gui.py under Windows Subsystem for Linux (WSL 2)

Hi,

I am Windows user. I have modified the vis_gui.py in Open3D for my gui (Windows). My gui now can run under WSL2 too as I want to integrate my GUI and open3d-ML functionalities. My issue now is that this gui does not utilize GPU when running under WSL 2, and as a result, the gui becomes very slow to zoom/pan/rotate when adding point cloud. I do not have this issue in Windows where I can assign what python.exe to be used with GPU in Windows. Any idea? Thanks!