pbrt-rust

Another implementation of PBRT in Rust based on the PBRT book and the C++ version by Matt Pharr, Wenzel Jacob:

http://www.pbrt.org

Usage

> cargo build --release
> ./target/release/pbrt-rust --help
pbrt-rust 0.1
Parse a PBRT scene description file and render it

USAGE:
    pbrt-rust.exe [FLAGS] [OPTIONS] <input>

FLAGS:
    -c, --cat            Print a reformatted version of the input file(s) to standard output. Does not render an image
    -h, --help           Prints help information
    -e, --logtostderr    Print all logging messages to stderr
    -t, --toply          Print a formatted version of input file(s) to standard output and convert all triangle meshes
                         to PLY files. Does not render and image
    -V, --version        Prints version information
    -v, --verbose        set LOG verbosity

OPTIONS:
    -w, --cropwindow <x0> <x1> <y0> <y1>    Specify an image crop window
    -l, --logdir <logdir>                   Specify directory that log files should be writtend to. Default: system temp
                                            directory (e.g $TMPDIR or /tmp)
    -n, --nthreads <nthreads>               Use specified number of threads for rendering [default: 0]
    -o, --outfile <outfile>                 Write the final image to the given filename

ARGS:
    <input>    Path to PBRT scene description file

Example scenes

These are the first few scenes rendered using pbrt-rust. More scenes will be rendered as I fix the remaining bugs in the system if there are any

First scene rendered in pbrt-rust

Ganesha statue

Subsurface Scattering with dragon

Stochastic Progressive Photon Mapping

Country Kitchen by Jay-Artist

The Wooden Staircase by Wig42

Japanese Classroom by NovaZeeke

Ecosystem

Note: I still very much consider myself a beginner in rust so there is definitely room for improvement in various parts of the system. Any feedback whatsoever is greatly welcome and appreciated. Not every part of the system is fully tested so there could still be some bugs I'm not yet aware of especially with the bsdfs. I will fix the bugs, if there are any, as I render more scenes.

TODO

• Render more scenes and fix any bugs
• Add more unit tests
• Do atleast some of the exercises in the book as most of them add new features to the system or improve performance
• Benchmark pbrt-rust against the C++ version
• Add a system profiler equivalent to the C++ version
• SIMD optimizations
• Add feature to create animations
• Update parts of the system to PBRTv4 when the book releases
• Implement parsing and rendering of blend files

Other implementations

You can find other implementations of PBRT in rust here

• https://github.com/wahn/rs_pbrt (Very well documented)
• https://github.com/abusch/rustracer

License

Licensed under either of

• Apache License, Version 2.0, (LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0)
• MIT license (LICENSE-MIT or http://opensource.org/licenses/MIT)

at your option.