Polar spikes occur due to the heightmap texture sampling wrapping around from top to bottom. If the poles have different heights then a spike or pit will occur as it blends to the height of the other pole.
This fixes the sampling to clamp at the poles while leaving wrapping enabled for the meridian.
Polar spikes occur due to the heightmap texture sampling wrapping around from top to bottom. If the poles have different heights then a spike or pit will occur as it blends to the height of the other pole.
This fixes the sampling to clamp at the poles while leaving wrapping enabled for the meridian.