Taichi Small Path Tracer

A small path tracer implemented using Taichi-lang.

What's Implemented

• Support for diffuse, specular, and refractive materials
• Adjustable surface roughness
• Configurable camera with depth of field effects
• Sub-pixel sampling
• Russian Roulette path termination
• Gamma correction

Requirements

• Python 3.9
• Taichi 1.7.1

Usage

Run the path tracer using:

python smallpt.py

The renderer will open a GUI window showing the progressive rendering of the scene. The image will continue to refine over time as more samples are collected.

Customization

You can modify various aspects of the renderer:

• Adjust RESOLUTION to change the output image size
• Modify N_SUBPIXEL to control the number of samples per pixel
• Adjust MAX_DEPTH to change the maximum ray bounce depth
• Modify the Camera parameters in the main() function to change the view
• Edit the init_scene() function to create custom scenes with different spheres and materials

License

This project is open source and available under the MIT License.

Acknowledgements

• Taichi Graphics
• Physically Based Rendering
• smallpt: Global Illumination in 99 lines of C++