Rayo

A path tracer written in rust. Inspired by the amazing Ray Tracing in One Weekend book series.

Renders

Usage

rayo is (currenty) a command line tool. The available flags and options are:

USAGE:
    rayo [OPTIONS] <SCENE>

FLAGS:
    -h, --help       Prints help information
    -V, --version    Prints version information

OPTIONS:
    -a, --aspect <ASPECT-RATIO>        Aspect ratio [default: 16/9]
    -d, --depth <MAX-DEPTH>            Maximum recursion depth [default: 30]
    -n, --num-samples <NUM-SAMPLES>    Number of samples per pixel [default: 100]
    -o, --out <FILE>                   Rendered image path [default: render.png]
    -r, --resolution <RESOLUTION>      Horizontal image resolution [default: 480]

ARGS:
    <SCENE>    The Scene JSON file

To create a render you need to create a corresponding scene file defining the positions, shapes, materials and textures of all of the models in the scene. A collection of example scenes can be found in the scenes folder.

Features

Many features are yet to be implemented. The basic roadmap is:

• Nice CLI
• Reading scenes from json or some other similar format
• Support for OBJ files for meshes (using assimp)

Shapes

• Spheres
• Axis aligned boxes
• Triangle meshes
• Planes

Materials

• Lambertian diffuse materials
• Metalic materials
• Glass/Dielectrics

Effects

• Anti aliasing
• Depth of field
• Skyboxes
• Motion blur
• Adjustable camera positions
• Textures (checkerboard)
• Textures (reading from image)
• Light objects

Efficiency enhancements

• parallelize on CPU
• parallelize on GPU (cuda)
• bounding volumes

Possible things but unlikely

• make an opengl viewer which allows you to set up scene and then switch to raytraced mode
• have this viewer display the render after each sample
• compile this to webgl and wasm and run in browser?