Is there any relation between this class of rendering techniques and the way the BD scenes in Cyberpunk 2077 were created? The behavior of the volume and the "voxels" seem eerily similar.
It's a sort of replayable cutscene that happens a couple times in the game where you can wander through it. The noteworthy bit is it's rendered out of voxels that look very similar to the demos but at a much lower resolution and if you push the frustrum into any objects, you get the same kind of effect where the surface breaks into blocks.