https://github.com/doubleailes/crust-render

A simple toy ray tracer
https://github.com/doubleailes/crust-render

cook-torrance disney-principled-brdf mis path-tracing ray-tracing ray-tracing-in-one-weekend rust

Last synced: about 1 year ago
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A simple toy ray tracer

• Host: GitHub
• URL: https://github.com/doubleailes/crust-render
• Owner: doubleailes
• License: mit
• Created: 2025-03-28T22:18:35.000Z (over 1 year ago)
• Default Branch: main
• Last Pushed: 2025-04-01T14:59:16.000Z (over 1 year ago)
• Last Synced: 2025-04-01T16:30:21.589Z (over 1 year ago)
• Topics: cook-torrance, disney-principled-brdf, mis, path-tracing, ray-tracing, ray-tracing-in-one-weekend, rust
• Language: Rust
• Homepage:
• Size: 2.89 MB
• Stars: 1
• Watchers: 1
• Forks: 0
• Open Issues: 3
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

          
# Crust Render



    






A toy, high-quality path tracer written in safe, modern Rust — inspired by PBRT, `Ray Tracing in One Weekend`, and Autodesk Standard Surface.

Completely in a vibe coding mood.

## 📸 Preview

![preview](./images/rgb.png)

---

## ✨ Features

- ✅ **Physically-Based Path Tracing**

  - Supports diffuse, metal, glass, Blinn-Phong, Cook-Torrance

- 🔁 **Recursive Ray Scattering** with depth control

- 💡 **Multiple Light Sources**

  - Emissive materials

  - Light sampling & MIS (Multiple Importance Sampling)

- ⚙️ **Material System**

  - Trait-based, easy to extend

  - Microfacet GGX BRDF with Fresnel and geometry terms

- 🧠 **Importance Sampling**

  - Supports BRDF- and light-based sampling

- ⚡ **Adaptive Sampling**

  - Early stop based on variance threshold

- 🧪 **Modular Design**

  - Clean separation between renderer, integrator, materials, scene

- **Disney Principled Shader**

  - A basic integration of the animation standard shader

- **Correlated Multi-Jittered (CMJ)**

  - Use CMJ for camera and light rays

---

## 🚀 Getting Started

### 🔧 Build and Run

```bash

cargo run --release -- --samples-per-pixel 200 --max-depth 50