Draft: vtkXOpenGLRenderWindow: Allow borderless windows not always on top
This allows creating borderless windows that can still be obscured by other windows, via setting a new environment variable:
export PV_WINDOW_BORDERLESS_COVERABLE=1
This allows creating borderless windows that can still be obscured by other windows, via setting a new environment variable:
export PV_WINDOW_BORDERLESS_COVERABLE=1