strolle

Strolle (from strålspårning) is a real-time raytracing engine written entirely in Rust, running on CPU & GPU:

It comes integrated with Bevy, but can be also used on its own (within wgpu).

Status: work in progress, no official release yet; examples below should work on Windows, Mac & Linux (with WebGPU support possible in the future).

Examples

Before running any example, please execute (just once):

$ cargo build-shaders

Cameras

$ cargo run --release --example cameras

Shows support for multiple cameras - the left one is rasterized, while the right one is raytraced.

Cubes

$ cargo run --release --example cubes

Shows a few cubes rotating around the origin; use keyboard & mouse to move the camera.

Instancing

$ cargo run --release --example instancing

Shows support for hierarchical BVH - there's 100 bunnies * 69 polygons per each bunny; use keyboard & mouse to move the camera.

Models

$ cargo run --release --example models

Shows support for complex geometry (from a few thousand to a few hundred thousand triangles); use left and right arrows to change models, use keyboard & mouse to move the camera.

Models thanks to:

Nefertiti

$ cargo run --release --example nefertiti

Renders a 2 million-polygon head of Nefertiti with some dynamic lightning; use keyboard & mouse to move the camera.

(note that model takes a few seconds to appear.)

Model thanks to: https://www.cs.cmu.edu/~kmcrane/Projects/ModelRepository/.

Options

strolle-models/src/lib.rs contains a constant called ENABLE_AABB - if you enable it (and re-generate the shaders), the raytracer will draw BVH bounding boxes instead of the triangles; can be fun to browse!