scenix

Modular Rust-native 3D scenes for native and WASM apps.

scenix 1.2.0 is the current stable release. The public API is frozen around small focused crates: CPU authoring stays lightweight by default, while loading, GPU rendering, post-processing, Animato integration, and browser support remain opt-in.

Install

Most applications start with the facade crate:

[dependencies]
scenix = "1"

Enable optional systems only when needed:

[dependencies]
scenix = { version = "1", features = ["loader"] }
scenix = { version = "1", features = ["renderer", "post"] }
scenix = { version = "1", features = ["animato"] }
scenix = { version = "1", features = ["wasm"] }

Focused crates can be used directly:

[dependencies]
scenix-math = "1"
scenix-core = "1"
scenix-input = "1"
scenix-scene = "1"
scenix-camera = "1"
scenix-mesh = "1"
scenix-material = "1"
scenix-light = "1"
scenix-texture = "1"
scenix-loader = "1"
scenix-renderer = "1"
scenix-post = "1"
scenix-raycaster = "1"
scenix-helpers = "1"
scenix-animato = "1"
scenix-wasm = "1"

For no_std CPU authoring:

[dependencies]
scenix-math = { version = "1", default-features = false, features = ["libm"] }
scenix-core = { version = "1", default-features = false }
scenix-input = { version = "1", default-features = false }
scenix-scene = { version = "1", default-features = false }
scenix-camera = { version = "1", default-features = false }
scenix-mesh = { version = "1", default-features = false }
scenix-material = { version = "1", default-features = false }
scenix-light = { version = "1", default-features = false }
scenix-texture = { version = "1", default-features = false }
scenix-raycaster = { version = "1", default-features = false }
scenix-helpers = { version = "1", default-features = false }

scenix-loader, scenix-renderer, scenix-post, scenix-animato, and scenix-wasm are optional std paths. The Animato bridge uses animato = "1.5.0".

Feature Flags

Quick Start

use std::collections::BTreeMap;
use scenix::{
    CameraId, CameraStores, Geometry, MaterialId, MeshId, NodeAnimationTarget, NodeAnimator,
    PbrMaterial, PerspectiveCamera, SceneGraph, SceneNode, ScenixAnimationDriver, Vec3,
    Vec3Track, box_geometry,
};

# fn run() -> Result<(), scenix::ValidationError> {
let mesh_id = MeshId::new(1);
let material_id = MaterialId::new(1);

let mut meshes = BTreeMap::<MeshId, Geometry>::new();
meshes.insert(mesh_id, box_geometry(1.0, 1.0, 1.0, 1, 1, 1));

let mut scene = SceneGraph::new();
let cube = scene.add(SceneNode::mesh("cube", mesh_id, material_id));

let mut driver = ScenixAnimationDriver::new();
driver.add_node(NodeAnimator::new(
    cube,
    NodeAnimationTarget::Translation(Vec3Track::tween(
        Vec3::ZERO,
        Vec3::new(1.0, 0.0, 0.0),
        0.5,
    )),
));

let camera_id = CameraId::new(1);
let mut perspective = BTreeMap::from([(
    camera_id,
    PerspectiveCamera::new(60.0, 1.0, 0.1, 100.0)
        .position(Vec3::new(0.0, 0.0, 4.0))
        .target(Vec3::ZERO),
)]);
let mut orthographic = BTreeMap::new();
let mut cameras = CameraStores {
    perspective: &mut perspective,
    orthographic: &mut orthographic,
};
let mut materials = BTreeMap::from([(material_id, PbrMaterial::new())]);
let mut skeletons = Vec::new();

driver.tick(0.5, &mut scene, &mut cameras, &mut materials, &mut skeletons)?;
scene.update_world_transforms();
# Ok(())
# }

Headless Rendering

use scenix::{Renderer, RendererConfig, PerspectiveCamera, Vec3};

# async fn run(scene: &scenix::SceneGraph) -> Result<(), scenix::ScenixError> {
let mut renderer = Renderer::headless(RendererConfig::new(256, 256)).await?;
let camera = PerspectiveCamera::new(60.0, 1.0, 0.1, 100.0)
    .position(Vec3::new(0.0, 0.0, 5.0))
    .target(Vec3::ZERO);
let stats = renderer.render(scene, &camera)?;
assert!(stats.frame_index > 0);
# Ok(())
# }

Loading Assets

use scenix::GltfLoader;

# fn run() -> Result<(), scenix::ScenixError> {
let asset = GltfLoader::new().load_file("scene.gltf")?;
assert!(!asset.meshes.is_empty());
# Ok(())
# }

Raycasting

use std::collections::BTreeMap;
use scenix::{
    Geometry, MaterialId, MeshId, PerspectiveCamera, Raycaster, SceneGraph, SceneNode,
    Vec2, Vec3, box_geometry,
};

let mesh_id = MeshId::new(1);
let material_id = MaterialId::new(1);
let meshes = BTreeMap::<MeshId, Geometry>::from([(
    mesh_id,
    box_geometry(1.0, 1.0, 1.0, 1, 1, 1),
)]);

let mut scene = SceneGraph::new();
scene.add(SceneNode::mesh("cube", mesh_id, material_id));
scene.update_world_transforms();

let camera = PerspectiveCamera::new(60.0, 1.0, 0.1, 100.0)
    .position(Vec3::new(0.0, 0.0, 4.0))
    .target(Vec3::ZERO);
let ray = Raycaster::from_camera_ndc(&camera, Vec2::ZERO);

let mut raycaster = Raycaster::new();
raycaster.build_bvh(&scene, &meshes).unwrap();
assert!(raycaster.cast_ray(ray, &scene, &meshes).is_some());

Workspace

Examples

The facade crate registers the example set from ARCHITECTURE.md:

cargo run -p scenix --example hello_cube --features renderer
cargo run -p scenix --example pbr_sphere --features renderer
cargo run -p scenix --example physical_material --features renderer
cargo run -p scenix --example toon_shading --features renderer
cargo run -p scenix --example gltf_scene --features "loader renderer"
cargo run -p scenix --example shadow_demo --features renderer
cargo run -p scenix --example raycasting
cargo run -p scenix --example post_processing --features "renderer post"
cargo run -p scenix --example instanced_mesh
cargo run -p scenix --example animato_integration --features animato
cargo run -p scenix --example orbit_camera
cargo run -p scenix --example lod_demo
cargo run -p scenix --example morph_targets
cargo run -p scenix --example fog_demo
cargo run -p scenix --example helpers_demo
cargo run -p scenix --example sprite_particles
cargo run -p scenix --example environment_map --features renderer
cargo run -p scenix --example render_target_capture --features renderer

The browser example lives in examples/wasm_viewer:

rustup target add wasm32-unknown-unknown
cargo check --manifest-path examples/wasm_viewer/Cargo.toml --target wasm32-unknown-unknown

Website

The static website is a standalone Leptos CSR app in website/. It is intentionally outside the main workspace so website dependencies do not affect normal library users.

cd website
trunk serve
trunk build --release --public-url /scenix/

GitHub Pages deployment is handled by .github/workflows/pages.yml, which builds website/dist with Trunk and deploys it at /scenix/. The demo uses scenix-wasm: it tries WebGPU where safe, falls back to a WebGL2 renderer with the same generated scene/material/light controls when WebGPU is unavailable, uses reduced WebGL1 only as a last GPU path, and only uses the Canvas2D preview when both GPU paths are unavailable.

Development Checks

cargo fmt --check
cargo clippy --workspace --all-features -- -D warnings
cargo test --workspace
cargo test --workspace --all-features
cargo test -p scenix-math -p scenix-core -p scenix-input -p scenix-scene -p scenix-camera -p scenix-mesh -p scenix-material -p scenix-light -p scenix-texture -p scenix-raycaster -p scenix-helpers -p scenix-animato --no-default-features
cargo test -p scenix-loader --all-features
cargo test -p scenix-raycaster -p scenix-helpers --all-features
cargo test -p scenix-animato --all-features
cargo check -p scenix-wasm --target wasm32-unknown-unknown --all-features
cargo check --manifest-path examples/wasm_viewer/Cargo.toml --target wasm32-unknown-unknown
SCENIX_RUN_GPU_TESTS=1 WGPU_BACKEND=vulkan cargo test -p scenix-renderer -p scenix-post --all-features
RUSTDOCFLAGS="-D warnings" cargo doc --workspace --all-features --no-deps
cargo bench --workspace --no-run
cargo llvm-cov --workspace --all-features

Documentation

• Developer docs
• Architecture
• Roadmap
• Changelog
• Getting started
• Installation
• Quick start
• Concepts
• Guides
• API reference
• Examples
• Recipes
• Performance
• Deployment
• Migration
• Reference
• v1.2.0 release notes

Known Limitations

• The renderer now uploads material textures, light data, environment descriptors, and render targets through real GPU resources. Advanced physical shading is a pragmatic realtime path, not an offline film renderer.
• Loader APIs produce CPU-side scenix data; GPU upload stays explicit through Renderer registration.
• WebGL2 is the full browser fallback for the generated renderer scene when WebGPU is unavailable. WebGL1 remains a reduced last-resort fallback for older browsers.
• The website demo does not vendor large model assets.
• GPU tests require a Vulkan-capable device or Mesa lavapipe.

License

Licensed under either of:

• Apache License, Version 2.0
• MIT license