P-152: Virtual World Concept Update 156: Planet-sized Terrain: Part 35

I am continuing to have issues with the Tier 2 LOD’s.

The issue is, as I described in my previous post, that I need to find a way to represent an area greater than 10K meters without triggering Z-fighting issues.

At the moment, I am scaling and moving the spherical terrain using the same techniques that are working with Tier 1. The problem with this is that at the point where Tier 2 transitions into Tier 3, the radius of the earth is 3185500 meters, which is enough to cause a lot of graphical distortion and z-fighting.

What I will need to do is use 64-bit to 32-bit translation on the Tier 2 nodes as well, but instead of translating everything within 10k, I will need to use the view distance of the current LOD. This will hopefully be enough to avoid any z-fighting issues, but this remains to be seen.

I will also need to add some subdivision to the renderable nodes in Tier 2 to increase the detail as the player approaches the planet.