Terrain Graph Nodes

RustEdit Pro

Every node in the Terrain Graph's Add Node menu, by category. Click a node to see its inputs, outputs and settings. Nodes tells what each category is for.

Biome

Node	What it does
Biome Base	Fill the whole terrain with one biome.
Biome Classifier	Heat and moisture in, the five Rust biomes out.
Biome Layer	Paint a biome through a mask.
Join Biome	Build a biome field from one weight per biome.
Split Biome	Break a biome field into one weight per biome.

Channels

Node	What it does
Pack RGBA	Combine four masks into one RGBA wire.
Split RGBA	Break an RGBA wire into four separate masks.

Combine

Node	What it does
Blend	Mix two fields (add, multiply, max, overlay and more).
If	Pick True or False for each pixel by comparing A with B or a threshold.
Mix	Lerp between A and B by a mask or factor.

Erosion

Node	What it does
Flow	Where rain water collects and runs: a flow map and a river mask.
Hydraulic Erosion	Pipe-model water erosion (rivers, gullies).
Thermal Erosion	Slumps steep slopes toward a talus angle.

Filters

Node	What it does
Amplitude	Multiply the field by a gain value.
Clamp	Limit values to a range.
Contrast	Brightness and contrast around a pivot value.
Curve	Reshape values through a curve you draw.
Function	Abs, sine, cosine, smoothstep or inverse lerp on every pixel.
Invert	Flip values (1 - v).
Levels	Set the black and white points, bend the middle with gamma, and pick the output range.
Normalize	Stretch values to fill 0..1.
Power	v -> pow(v, exponent).
Quantize	Round every pixel to a set number of levels.
Remap	Linearly remap an input range to an output range.
Smooth	Blur / soften the field.
Terrace	Stepped plateaus / strata.
Transform	Zoom / pan / rotate the field.
Warp	Domain-warp the field for organic distortion.

Generators

Node	What it does
Constant	A flat field of one value.
Linear Gradient	Directional ramp from 0 to 1.
Noise	Fractal noise. Rust style: Perlin, Simplex, Ridged, Billow, Cellular, Sharp, Jordan or Ridge Warp; Simplex and the kinds built on it match Rust. Unity style: Unity Terrain Tools' noise with all its settings, the same as the terrain tools' Noise filter and Noise tool.
Position	Each texel's place on the map, in metres or from -1 to 1, at Rust's pixel centres.
Radial Gradient	Concentric falloff from a centre point.
Voronoi	Cellular / Worley noise.

Landforms

Node	What it does
Beach	Flatten low land by the sea into a gently rising beach, and mask where it is.
Ledge	Add a cliff step at a chosen height. An optional mask limits where it happens.

Masks

Node	What it does
Cavity	Picks out dips and bumps by comparing each point with its surroundings.
Direction	How directly each slope faces a light from a chosen direction.
Distance	How far each point is from a mask, in metres, outside and inside it.
Grow / Shrink	Widen or narrow a mask by some metres, with a soft edge.
Height Select	Mask a height band with soft edges.
Normal	Which way the ground faces at each point, worked out the way Rust does it.
Sea Level	Land, underwater and shoreline masks around sea level (world height 0).
Slope	Steepness of the terrain as a 0..1 field.
Slope Select	Mask a slope band with soft edges.

Output

Node	What it does
Terrain Output	Final terrain result (height, splat, biome, topology).

Source

Node	What it does
Current Map	The open map's height, splat, biome and topology, to build on.
Spline Mask	The open map's splines as a mask, and their height. Needs RustEdit Pro.
Texture	Load an image; outputs all four channels as one RGBA wire, plus R, G, B, A and greyscale separately.

Splat

Node	What it does
Join Splat	Build the 8 splat layers from two RGBA wires.
Splat Base	Fill the whole terrain with one splat layer.
Splat Layer	Paint a splat layer through a mask.
Split Splat	Break the 8 splat layers into two RGBA wires.

Topology

Node	What it does
Topology Flood Fill	Flag every cell reachable from a start point, the way Rust finds the mainland.
Topology Layer	Paint one topology flag through a mask.
Topology Mask	Read one topology flag back out as a mask.
Topology Merge	Combine two topology stacks.
Topology Spread	Set a flag on cells near other flags, the way Rust spreads beachside, oceanside and forestside.

Utility

Node	What it does
Field Switch	Pass on one of two fields, chosen by a condition. Handy for trying two versions of a graph.
Graph Seed	The master seed for every random node in the graph. Change it for a new map.
Resample	Make a field the size of another map, reading it the way Rust does.
Seed Random	One number from a seed's random chain. Chain Next Seed into the next one. Seed 0 uses the Graph Seed.
World Size	The open map's width and terrain height, in metres.

Value

Node	What it does
Bool	A constant boolean, drivable and shareable.
Clamp Value	Keep a value between Min and Max.
Compare	Compare two values: on or off.
Float	A constant float, drivable and shareable.
Int	A constant integer, drivable and shareable.
Lerp	Blend between two values.
Math	Combine two values (add, multiply, min, max and more).
Random	A random number between Min and Max that only changes when the seed does.
Switch	Pass on one of two values, chosen by a condition.