Runtime Compute Terrain

This is an experiement in making responsive deformable terrain post build, allowing end users (i.e. players) to modify terrain to their liking.

Screenshot 1	Screenshot 2	Screenshot 3

Features

• Infinite tiles: New tiles are generated based on the players position, and commands requesting modification on tiles that does not exist
• Projection based deformation: This package includes a compute shader renderer to render meshes that deforms the terrain onto the terrain. Suitable for embankment generated my splines.
• Build in spline library: This demo includes a custom spline library that uses compute shaders to generate splines during runtime, supporting modification such as moving the controlling nodes
• Procedural Vegetation: Trees, grasses and other meshes can be placed onto the surface of the terrain, they are then automatically moved if the terrain is modified. A simple LOD system reduce the amount of vegetation further away from the camera.
• Performant:
  • 100+FPS on a RTX2060 Mobile (Asus G14 2020)
  • 40FPS on a Ryzen 4900HS APU (Asus G14 2020)
• Universal Render Pipeline: Built for and on URP, utilizing new Unity features to perform direct mesh buffer manipulation in compute shader

Run this demo

1. Clone/Download this repo
2. Open with Unity 6
3. Open Scenes/Main Scene
4. Press the run button

Controls

• Hold shift to rotate camera
• Use WASD keys to move camera
• Use cursor and hold left mouse button to perform terrain modification
  • Change type of modification (Add, Subtract, Level, Smooth) with the TerrainCaster component on the Terrain gameobject
• Move the splines with the AnchorX gameobjects nested in the Embankment gameobjects