Toyray

a naive path tracer.

See gallery for scene credits.

Compile and Run

mkdir build
cd build
cmake ..
make -j
./toyray

Implemented functions

shape types:

• triangle
• triangle mesh
• sphere
• infinite plane
• square
• cube
• transformed geometries
• alpha-masked geometries
• bump-mapped geometries

materials:

• lambert reflective
• lambert transmissive
• mirror
• conductor (smooth / rough)
• dielectric (smooth)
• plastic (smooth / rough)

light types:

• diffuse area light
• point light
• directional light
• constant environment light
• environment map (light probe)

samplers

• std::mt19937

input format:

• shapes: Wavefront OBJ (ASCII)
• scene configuration: Tungsten styled JSON
• light probe / texture: EXR, HDR, PNG, JPG

output format:

• EXR
• BMP

Other notes

This renderer is neither reliable or efficient. If you are looking for open-source renderers, check out Mitsuba, PBRT, Tungsten...

If you decide to learn path tracing by reading this code, I recommend start by looking at the path tracing core src/renderer.cpp.

Scenes are available at toyray-scenes made by other artists, mostly converted by Benedikt Bitterli.