[xsmasher]

I remember a very old video where they rendered 3d scenes for frames 1 and 5 (examples) but interpolated the frames in between, or something like that, instead of re-rendering the whole scene. Maybe they were only redrawing some triangles if the angle changed too much.

If it's that tech, I'm pretty sure it got dropped when 3D acceleration made it feasible to just re-render the whole scene every frame. Dedicated hardware won out over software tricks.