Special parameters

The per-surface parameters live inside each layer’s category. Special parameters live at the Material Instance level and shape the whole landscape: where the beach starts, where the snow starts, how strong each puddle type is, how the auto-generated gravel blends in.

Height thresholds

Parameter	Effect
`BeachHeight`	World Z above which the beach base layer begins to appear.
`SnowHeight`	World Z above which the snow base layer begins to appear.
`GrasstoSnowSmoothness`	Transition softness between snow and the underlying material.

Puddles

Per-biome puddle strength and scale. These are the same parameters called out on each biome’s page in the biomes reference, grouped here for cross-biome comparison.

Parameter	Effect
`GrassMudPuddle`	Strength of the grass mud puddle.
`GrassMudPuddleSize`	Size of the grass mud puddle.
`TropicalRainforestMudPuddle`	Strength of the tropical rainforest mud puddle.
`TropicalRainforestMudPuddleSize`	Size of the tropical rainforest mud puddle.
`TundraGravelPuddle`	Strength of the tundra gravel puddle.
`TundraGravelPuddleSize`	Size of the tundra gravel puddle.

Gravel angle blend

The gravel angle blend is the noise-driven secondary gravel that appears around cliffs and steep terrain. These parameters tune how that blend reads.

Parameter	Effect
`GravelAngleBlendNoiseContrast`	Contrast of the auto-generated gravel area’s noise.
`GravelAngleBlendNoiseStrength`	Strength of the auto-generated gravel area’s noise.
`GravelAngleBlendTiling`	Texture tiling for the auto-generated gravel area.
`GravelSmoothTransition`	Transition softness between the auto gravel and other materials.
`GravelStrength`	Strength of the gravel material.
`GravelContrast`	Contrast of the gravel material.
`GravelPhysStrength`	Physical material strength of the auto-generated gravel area.

Where to next

Parameters: per-surface parameters
Weather parameters: per-material weather controls
Season parameters: per-biome seasonal overrides