Grim Rune Terrain Generator

A standalone Rust terrain generator using egui, using a terrain generation method by Runevision (Skovbo Johansen).

See here:

https://www.shadertoy.com/view/wXcfWn https://www.shadertoy.com/view/sf23W1 https://blog.runevision.com/2026/03/fast-and-gorgeous-erosion-filter.html https://www.youtube.com/watch?v=r4V21_uUK8Y

Building:

git clone https://codeberg.org/Grimsace/advanced_erosion_terrain_heightmap_generation.git
cargo build --release

Easy Way:

Download the latest release!

Current UI

The app uses an egui desktop interface with:

• A left control panel with Generation and Advanced tabs
• Generation controls for image width, image height, generation scale, erosion scale, and random seed
• Advanced controls for strength, gully weight, detail, and octaves
• A right preview area showing both the normalized heightmap and the shaded bumpmap