https://github.com/noteed/smallpt-hs

A Haskell port of the C++ smallpt path tracer
https://github.com/noteed/smallpt-hs

Last synced: about 2 months ago
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A Haskell port of the C++ smallpt path tracer

• Host: GitHub
• URL: https://github.com/noteed/smallpt-hs
• Owner: noteed
• License: bsd-3-clause
• Created: 2010-09-08T20:15:42.000Z (over 14 years ago)
• Default Branch: master
• Last Pushed: 2020-12-14T14:25:29.000Z (about 4 years ago)
• Last Synced: 2023-09-20T06:18:28.426Z (over 1 year ago)
• Language: Haskell
• Homepage:
• Size: 12.7 KB
• Stars: 15
• Watchers: 5
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
smallpt-hs

==========

**Update**: [bollu](https://github.com/bollu) and

[davean](https://github.com/davean) have made an [optmized

version](https://github.com/bollu/smallpt-opt).

This is a port of [smallpt](http://www.kevinbeason.com/smallpt/), a global

illumination path tracer written in 99 lines of C++. The port is written in

99 lines of Haskell.

There are two major differences: performance and argument parsing. The Haskell

code compiled with GHC 6.12.1 is about 4.5 times slower than the C++ version.

(I only tested on my anemic Atom N450-powered netbook...) The C++ code takes an

optional argument, which should be a integer greater than 4.

Give it a spin

--------------

The complete package contains more than the 99 lines smallpt-hs.hs file. There

are other variants with a criterion wrapper to benchmark the code. The cbits

directory contains the original smallpt.cpp file modified to be expose the main

entry point as a C symbol callable from Haskell via FFI.

Every attempt so far use the vector package. The 99 lines file is derived from

Smallpt/Mutable.hs. The Storable code doesn't improve the performance and is

less convenient to use. The Unboxed code lose in performance because the Vec

type can't benefit from an explicit unpack pragma.

If you can make the code faster or easier to read, please let me know!

License

-------

Although the LICENSE file is a BSD3 license, I should contact Kevin Beason (the

original author of the C++ code) to make sure it is ok. The linked site above

has the original LICENSE.