LOD generation

[Jckf]

Closes #14

Update 6

Now supports DH 2.0.4, and lighting should be more or less properly fixed.

Update 5

Multi-threaded! https://youtu.be/sH-XJeCXSho

Update 4

Pink blocks are gone, and single threaded performance is now pretty decent. LODs generated in real-time https://youtu.be/oQqvJu4QmHE LOD transmission once pre-generated https://youtu.be/QKSyJ1TxxH4

Update 3

Better lighting, and pink blocks?

Update 2

Now uses actual world data, although lighting is busted. I guess this is why DH has its own lighting engine 😅

Update 1

So far only generates water filled LODs, not based on the actual world you're in: (Edge of Minecraft render right below crosshair.)