blinky

This brought this other video to mind: https://www.youtube.com/watch?v=jQOJ3yCK8pI See also: https://github.com/shaunlebron/blinky Using non-standard projections in Quake.

This looks a lot like the quincuncial projection applied to a cube map render, with some custom logic to subtly warp geometry in a stable way so as to make certain details pop based on distance. You can try for yourself by downloading blinky (formerly fisheye quake) [1] and experimenting with the projections. That said, it's probably not just a projected cube map. Doing so will introduce noticeable sampling artifacts, so I am guessing they also do something more to address such issues. [1] https://github.com/shaunlebron/blinky

I tried looking up a technical publication on this technique but the journal article is straight trash [0]. That said, I found a useful post where folks were trying to explore this style of rendering [1]. It’s interesting to see that in the demo videos the cameras move in a straight path. Apparently there is some wonkiness that comes from changing the view orientation. From [1], I’ll leave by cross posting some useful links: experimental rendering techniques with Quake [2], Minecraft [3], and a cool article about visualizing projections [4]. [0] https://www.scienceopen.com/document_file/4e8c9d47-51f4-4145... [1] https://forums.chaosgroup.com/forum/chaos-common/chaos-commo... [2] https://github.com/shaunlebron/blinky [3] https://github.com/shaunlebron/flex-fov [4] http://shaunlebron.github.io/visualizing-projections/

You can use maps containing fewer faces than a cube, or any partial mapping that covers the 170 degree area you need. I researched this a bit here: https://github.com/shaunlebron/blinky

Of cause projections themselves don't have to be restricted to the geometric planar case: https://github.com/shaunlebron/blinky and don't miss the explanatory part further down: http://shaunlebron.github.io/visualizing-projections/

Also, this: https://github.com/shaunlebron/blinky