crocodile: An offline renderer supporting ray tracing and photon mapping

[ gpl, graphics, program ] [ Propose Tags ] [ Report a vulnerability ]

This is an offline renderer written purely in Haskell, supporting ray tracing and photon mapping with an irradiance cache

[Skip to Readme]

Downloads

crocodile-0.1.2.tar.gz [browse] (Cabal source package)
Package description (as included in the package)

Maintainer's Corner

Package maintainers

TomHammersley

For package maintainers and hackage trustees

edit package information

Candidates

No Candidates

Versions [RSS]	0.1, 0.1.1, 0.1.2
Dependencies	base (>=4 && <5), bmp, bytestring, deepseq, ghc-prim, heap, HUnit, mersenne-random-pure64, mtl, parallel [details]
License	GPL-2.0-only
Author	Tom Hammersley
Maintainer	tomhammersley@gmail.com
Category	Graphics
Home page	https://github.com/TomHammersley/HaskellRenderer/
Source repo	head: git clone git://github.com/TomHammersey/HaskellRenderer.git
Uploaded	by TomHammersley at 2011-09-29T21:51:34Z
Distributions
Reverse Dependencies	1 direct, 0 indirect [details]
Executables	crocodile
Downloads	2726 total (3 in the last 30 days)
Rating	(no votes yet) [estimated by Bayesian average]
Your Rating	λ λ λ
Status	Docs not available [build log] All reported builds failed as of 2016-11-11 [all 10 reports]

Readme for crocodile-0.1.2

[back to package description]

Haskell Ray Tracer and Photon Mapper v0.0
-----------------------------------------

This is a parallel ray tracer and partially parallel photon mapper written in Haskell.

Features:

Fully recursive raytracer with reflection and refraction
* Sphere primitive
* Plane primitive
* Triangle mesh primitive
* Parallelised ray tracing
* Distributed ray tracing giving depth of field and anti-aliasing
* Photon mapping
* Irradiance caching
* Gamma correction
* Tone mapping

Disclaimer
----------

I am a novice Haskell programmer. This code is not intended to be representative of best-practice Haskell programming.

If you see code that could be improved in terms of style, correctness, clarity, flexibility or efficiency, please, let me know! I'm eager to learn and I'd love to hear the opinion of those far more capable than me.

Why call it "crocodile"?
------------------------

My two-year old son currently has quite a penchant for crocodiles.

Usage
-----

Currently there is a default hard-coded scene of the Cornell Box. I build the program with:

scripts/build

and execute it with:

time ./crocodile -p -i -c +RTS -N -RTS

Cabal also works, of course

This will output a file called test.bmp containing the resulting image. Depending on the number of photons emitted, the photon gathering radius and the maximum number of photons gathered, this could take quite some time. You can tune the parameters in Main.hs.

Options
-------

-i outputs intermediate renderings for fast debug feedback (recommended)
-p enables the photon mapping pass
-v directly visualises the photon map
-c enable the irradiance cache

Bugs
----

The Photon Mapping is largely functional though it currently has some minor artefacts. Work is ongoing to fix them.
There are numerous TODO issues noted in the code.

Future planned work
-------------------

* Gradients for the irradiance cache
* Parsing of scene data files
* Optimisation! Particularly of photon mapping
* Parallelisation of photon gathering
* Extended shader model
* Alternative GI code paths - e.g. path tracing
* Caustic photon mapping

Tom Hammersley 12/5/2011
tomhammersley@gmail.com