
1. Dynamic GPU Terrain 13
1.5.4 Wheels
Wheel modification is a simulation of a cylindrical shape moving over a terrain.
It uses a terrain data compression factor to prevent oversinking and to create a
wheel side supplant.
We tried to link this parameter with the terrain data flowability parameter
(to reduce the texture data), but it led to many problems related to the erosion
effect because it also changes the flowability value.
1.6 Physics Synchronization
One drawback of GPU-only processing is that sometimes data needs to be syn-
chronized with the physics, which is in the CPU domain. To do that, we need to
transfer data from the GPU memory to the CPU memory ...