MetropoLight is a simple freeware global illumination rendering program that uses the Metropolis Light Transport algorithm to render images.
MLT is a Monte Carlo method for solving the light transport problem. It is inspired by the Metropolis sampling method in computational physics.
In short, a sequence of light transport paths is generated (based on Monte Carlo Markov Chain sampling) by randomly mutating a single current path. The probability density of visiting each path is proportional to its contribution to the final image. This algorithm has the particularity to be unbiased and can be orders of magnitude more efficient than previous unbiased approaches. It is highly recommended for complex and delicate indirect lighting
I developed this small rendering project to study and to familiarize with this new approach in random walk global illumination algorithms. Metropolis Light Transport will be one of the numerous algorithms implemented into my "next generation" renderer (codename: A.E.R.E.)
Although some additional features will be progressively implemented to complete the project, MetropoLight doesnt claim to become a sophisticated renderer. It just has to be considered as an experimental rendering tool.
The package includes three utilities:
- MLTexport for Maya 5.0, 6.0 and 6.5, a plug-in allowing the user to export the scene to MLT ascii file format.
- 3DS2MLT, a standalone tool able to convert any 3DS file to MLT ascii scene format.
- MetropoLight, the standalone Metropolis Light Transport engine that renders Targa images from MLT scenes.
Notes:
Last release is 0.5.0.
Please read the documentation carefully before to start playing with it.
This project is for Windows only. No other platforms will be supported.
http://www.3dvirtualight.com/mlt
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