pbrt-minus

A simpler, less performant, physically based, GPU ray tracer rewritten from PBRT-v4.

feature

• CUDA acceleration
• HLBVH with work queues (Pantaleoni et al. 2010, Garanzha et al. 2011)
• wavefront path tracing (Laine et al. 2013)
• spectral rendering
• multiple importance sampling
• power light sampler
• stratified sampler

set up environment

Linux

Debian/Ubuntu:

$ sudo apt install -y cmake libglu1-mesa-dev libpng-dev libx11-dev xorg-dev

Setting up for other distros should be similar.

Windows

It's recommended to build it with Windows Subsystem for Linux.

CUDA on WSL might help set up CUDA.

build and render

$ git clone --recursive https://github.com/w3ntao/pbrt-minus.git

$ cd pbrt-minus
$ mkdir build; cd build
$ cmake ..; make -j

$ ./pbrt-minus ../example/cornell-box-specular.pbrt --spp 4

gallery

More scenes at https://github.com/w3ntao/pbrt-minus-scenes.