BS Contact Stereo 7.2 and higher supports various stereo rendering modes. Stereo (also often referred to as "3D") requires presenting separate images with an apropriate perspective for the left and right eye. Some types of multiview autosteroscopic displays require even more views.
Red-Blue stereo can be activated in BS Contact right mouse menu Settings > Stereo > Red-Blue.
BS Contact Stereo supports various modes on how to output the separate view images: