Show HN: I wrote a C++ ray tracer from scratch without AI

Luz is a C++20 path tracer built from scratch without third-party dependencies, featuring Monte Carlo global illumination, BVH acceleration, adaptive sampling, denoising, and support for various materials and lighting models. The project includes a Blender-to-Luz exporter, deterministic benchmarking tools, and runs on macOS, Linux, and Windows with customizable render parameters via CLI or scene files. The developer emphasizes the implementation was completed without AI assistance.