Dedicated Servers

Voxel density is generated on the GPU by default, which needs a renderer. Dedicated servers, -nullrhi runs and commandlets do not have one, so they automatically fall back to a CPU path that runs the same density math. The server therefore builds the same world as its clients, and no configuration is needed for this to work

Console Variables

Two console variables let you override the path selection when you are debugging

Console Variable	Default	Description
da.Voxel.UseGPU	-1	Overrides the voxel density generation path. -1 uses the dungeon’s setting, 0 forces CPU, 1 forces GPU. Render-incapable targets always use the CPU path
da.Voxel.CPUExactDensity	-1	Chooses the CPU density evaluator. -1 is exact on render-incapable targets and coarse otherwise, 0 forces coarse, 1 forces exact, which matches the GPU shader math

Note

da.Voxel.UseGPU 1 cannot force the GPU path on a target that has no renderer. The fallback always wins there, otherwise the build would fail outright