I got bored one weekend and wanted to try some different techniques for raytracing than those I previously used in Fantasi. In this project, rays scatter off of surfaces they hit stochastically, whereas in Fantasi rays followed a deterministic path, computing lighting using some approximations.
It supports:
- Spheres
- Diffuse (Lambertian) materials
- Metallic materials
- Dielectric materials (ie. glass)
- Diffuse light emitting materials
- Camera transformations
- Camera field-of-view setting
- Camera aperture setting (ie. depth of field)
- Antialiasing
- PPM Image format
- Multi-threaded sampling
Currently this only supports Linux and macOS based systems. You'll need a version of g++ that supports C++17, as well as the boost libraries. On Linux, run:
sudo apt-get install build-essentials libboost-all-dev
On macOS, run:
brew install boost
Then just run make release and it should output a binary to ./build/release/apps/raytracer.
This project was largely inspired by the excellent book Ray Tracing in One Weekend by Peter Shirley. It's well-written and easy to follow along. I made many of my own modifications along the way, making use of techniques from Scratchapixel and the book Physically Based Rendering: From Theory to Implementation by Matt Pharr et. al.
Code in this repository is released under the MIT License - see the LICENSE file.