Not a very impressive example yet, it's mainly there for our CI system[1] to ensure that no one accidentally breaks the meshlet feature, but there is an example you can run to get a basic idea of the feature.
You can download Bevy https://github.com/bevyengine/bevy, and run `cargo run --release --examples meshlet --features meshlet`. After it compiles you'll get prompted to download a bunny.meshlet_mesh file. Click the link to download and create and place it in the appropriate folder, and then run the example again.
Could this demo (and the others) be stood up as WASM on the homepage?
The WASM distribution channel is a huge potential selling point for Bevy. You don't get that with Unreal, and AFAIK, with Godot either. And because it's Rust, you get a way better type system and story around deploying to consumer devices than Three.js.
For virtual geometry specifically, it makes use of 64-bit integers and atomics, which are not supported on WebGPU at the moment, only the native Vulkan/DirectX/Metal backends. So unfortunately I can't do a web demo yet.
Hopefully the WebGPU spec will add support for it eventually, I've given my feedback to the spec writers about this :)
> The WASM distribution channel is a huge potential selling point for Bevy. You don't get that with Unreal, and AFAIK, with Godot either.
To clarify: if by "WASM distribution channel" you mean "exporting for the Web"--Godot has supported exporting & running projects in a web browser for around a decade[0].
(WASM has been supported since Godot 3.0[a] & is still supported in the current Godot 4.3[b][c]. Even prior to WASM, Godot 2.1 supported export for web via `asm.js`[d].)
Godot even has an editor[e]... :) which also runs in a browser via WASM[f].
That said, yes, you're correct that WASM support in both Bevy & Godot is a selling point--particularly because people often use Game Jams as an opportunity to try out new game engines and as "everybody knows" no-one[i] downloads executables from game jams so you'll get way more people trying your game[j] if they can play it in a web browser.
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[0] The oldest `platform:web`-related issues tracked date back to 2015.
[c] The move to the new rendering architecture (OpenGL vs Vulkan vs WebGL) in Godot 4.0 has had an impact on which exact features are supported for web exports over time.
[e] A light-hearted tongue-in-cheek jab played for cheap laughs with my only defense being that I've used both Godot[g] (since 2018) & Bevy[h] (since 2022) for 2D/3D game jam entries of varying degrees of incompleteness; participated in both communities; and am supportive of both endeavours. :)
[j] My own most complete & played game jam entry was (unexpectedly) this Incremental/"Clicker Jam" entry inspired by a childhood spent dismantling electronics: https://rancidbacon.itch.io/screwing-around
You can download Bevy https://github.com/bevyengine/bevy, and run `cargo run --release --examples meshlet --features meshlet`. After it compiles you'll get prompted to download a bunny.meshlet_mesh file. Click the link to download and create and place it in the appropriate folder, and then run the example again.
There's also this video from the Bevy 0.14 release notes demonstrating it, but performance/quality has improved a _lot_ since then: https://bevyengine.org/news/bevy-0-14/many_bunnies.mp4
[1]: https://thebevyflock.github.io/bevy-example-runner