This is what Doom looks like on a holographic display
This is autostereoscopic, not holographic. It is however really nice, 10 yrs ago we were playing Quake on a WowVx display from Phillips when not working on autostereoscopic digital signage content.  Phillips stopped with as3d and spun off Dimenco which are also selling As3d products, newsight, tridelity, and a few others are around... but all of this is NOT holography.  Its high res display with a lenticular sheet splitting viewpoints.