Ochre: a deterministic voxel world with 32km render distances built in Rust and Bevy

Ochre is a Rust voxel project I've been working on since 2021.

Open source on GitHub: https://github.com/rornic/ochre

It started as a simple Minecraft clone using Amethyst's ECS library and plain OpenGL bindings through glium, but I migrated it to Bevy a while back to make the most of the ecosystem.

Some cool features:

• Terrain streams in around the player and falls back to coarser LOD meshes with a cross-fade, so the curved horizon reaches 16km at the default render distance, increasing to 32km with altitude.
• 64 km x 64 km deterministic world. Droplet erosion carves valleys, hydrology routes rivers to lakes and the sea, and a climate pass sets temperature and moisture.
• A day and night cycle with sun, moon and stars, atmospheric scattering, volumetric clouds and weather including rain.

Built and tested on an aging RTX 2060 which currently begs for mercy at 1440p on 32km render distances. Ryzen 7 9800X3D crunches through chunk generation and meshing in an instant. Would love to see how this melts more modern GPUs!

I've found using a pure Rust engine like Bevy to be a great accelerator for AI coding harnesses too, really easy to do performance A/B tests on new engine features.