bevy_feronia

Foliage/grass scattering tools and wind simulation shaders/materials that prioritize visual fidelity/artistic freedom, a declarative api and modularity.

[!CAUTION] This package is in very early development, api's will most likely change and be modularized.

The performance isn't great for most scenarios atm and in general it is not stable.

The dev branch points at bevy's main branch for the time being because the manual instancing example uses new API's. The main branch will stay on 0.16.x until 0.17.0 releases.

Roadmap

• Chunking of landscape/meshes
• Texture-based Scattering on top of landscape/meshes
• Performance Improvements (e.g., LODs) / Shortcuts (e.g., more efficient calculations for procedural geometry)
• Make physics-based entities impact the displacement
• Make use of compute shaders (Allow scattering/sampling of foliage on CPU and GPU to get scattering of high-quality assets and procedural geometry)

Examples

• Press SPACE to scatter plants.
• The Wind Resource is configurable in the Inspector Window.

Grass

cargo run --example extended_material_grass

https://github.com/user-attachments/assets/b6adb502-aa99-412f-8c6c-67418d59aa3a

Foliage

cargo run --example extended_material_foliage

https://github.com/user-attachments/assets/4b71415e-63d7-4a5b-b85a-9cb4408abdab

Foliage complex

cargo run --example extended_material_foliage_complex

https://github.com/user-attachments/assets/63d6d98a-6b5a-47a6-853c-0c336a89f3e6

Manually instanced grass

cargo run --example instanced_material_grass

https://github.com/user-attachments/assets/486b3df2-3669-4ac5-850d-0826d1f881a1

Manually instanced grass split into chunks

cargo run --example instanced_material_chunks

https://github.com/user-attachments/assets/6c1e64ad-004a-4a38-8034-eb5c25ce7f8a

Manually instanced grass with a cpu-sampled density map and chunks

cargo run --example instanced_density_map

https://github.com/user-attachments/assets/3141e4ac-24ff-4519-8ba5-afadf8f6a2ad

Full example WIP

cargo run --example full

https://github.com/user-attachments/assets/2b81a6d2-cd6a-4baa-85c3-1dc814114a37

Credits/Inspirations

• Graswald for their amazing assets.
• Sucker Punch Productions for their Procedural Grass and Wind simulation in 'Ghost of Tsushima' and GDC Talks.