This should be trivial and one of the most fundamental aspects of VR. If I have a single stereoscopic image pair how do you directly output the image to a Windows Mixed Reality headset using Unity. Attached is a sample image.
Converted my image to a 3 frame mp4 video and added this to my project. Change the video properties to SBS in the Inspector. The current offset between left-right images was way too large for mixed reality so I used a 2% horizontal shift. You can use the same method for all non 360 sbs vr videos and get this to work well with Windows MR.
Found a better solution much more realistic with the 3D effect very much similar to analgyph images. I basically adopted the same strategy as posted at Full 360 stereoscopic video playback in Unity – Bernie Roehl
I used a curved mesh for both eyes I created in Blender from a UV sphere. Added two cameras and render out the separate stereoimages using layers and camera culling. You can also use one image and generate a second stereo image by using a texture X offset of 0.06. No feeling of nausea like with the panoramic beta shader ive tried.