Moer-lite: Research Oriented Physically Based Renderer

Introduction

This is the curriculum lab of an elective course "The Rendering" offered by NJU for junior students. We build a graphic renderer based on the Monte Carlo path tracing framework.

Updates

• March 8, 2023 Complete lab0, compile and run the provided code, and get four rendered pictures.

• March 21st, 2023 Complete the basic part of lab. Realize the intersection of light with cone, cylinder and disk

• March 24th, 2023 Complete the bonus part of lab1. Realize and the construction and intersection of octree, and the accelerator is realized based on octree.

• March 25th, 2023 Complete the bonus part of lab1. Realize the construction and intersection of bvh, the accelerator based on bvh (with some bugs).

• May 7, 2023 Complete the material model.

• July 14th, 2023 Complete the modification of material model.

• July 15th, 2023 Complete the realization and integration of four traditional filters.

• July 16th, 2023 Complete the integration of Intel® Open Image Denoise, but the script needs to be written again, and the command should be unified to complete the compilation integration and running integration.

• July 20, 2023 Complete the multiple importance sampling. (Lack of multiple bounce, temporarily ineffective)

• July 28th, 2023 Finish myScene1 modeled by myself.

  • 2023-3-8 完成lab0，对提供的代码进行编译、运行，获得四张渲染出的图片
  • 2023.3.21 完成lab1的base部分，实现了光线对于圆锥、圆柱、圆盘的求交
  • 2023.3.24 完成lab1的bonus部分，实现了octree的构建和求交，基于octree实现了加速器
  • 2023.3.25 完成lab1的bonus部分，实现bvh的构建和求交，基于bvh实现了加速器（有一点bug）
  • 2023.5.7 完成材质模型
  • 2023.7.14 完成材质模型的修改
  • 2023 7.15 完成四种传统滤波的实现和集成
  • 2023.7.16 完成Intel® Open Image Denoise的集成，但是需要再次编写脚本，统一命令，完成编译集成、运行集成
  • 2023.7.20 完成多重重要性采样。（缺少多bounce，暂时无效果）
  • 2023.7.28 完成自己创建的场景myScene1。

Introduction to Moer-lite

Features

• Easy to deploy, "install & clone & make & run"
• Structured scene description using json
• Interface for integrator/medium/bxdf/texture... and some pre-set implementions
• Unworried resource management for heavy resource (image/mesh

How to use

• Go to root

  cmake ..

  make -j4

• Go to target folder

  ./Moer <scene path> <add_noise> <denoise>

Examples

Five scene examples:

• examples/area-lights：提供了一个面光源照亮一个Stanford bunny的场景；
• examples/two-spotlights：提供了一个有着两个点光源的场景；
• examples/bunny：提供了一个使用环境光（environment lighting）照亮Stanford bunny的场景。
• examples/cornell-box：提供了一个使用whitted-style ray tracing的cornell-box场景
• examples/lab1-test0：提供了一个简单的mesh场景用来进行求交测试

Checklist

Accelerator

• BVH
• Embree
• others

Camera

• pinhole
• thinlens
• spherical
• others

Integrator

• path-tracing
• volpath-tracing
• bdpt
• mlt
• photon-mapping
• others

Sampler

• independent
• stratified
• low-discrepancy
  • Halton
  • (0-2)-Sequence
  • Maximized minimal distance
  • Sobol'
• others

Emitter

• point
• area
• infinite
• infinite cap
• others

Media

• homogeneous
• hetergeneous
• others

BxDF

• lambert
• mirror
• dielectric
• conductor
• disney
• plastic
• hair
• others

Shape

• sphere
• quad
• triangle-mesh
• curve
• others

Denoiser

• mean filter
• median filter
• gaussian filter
• bilateral filter
• others

Add noise

• salt-and-pepper noise
• gaussian noise
• others