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Fractal Software => Fractal Programs => Topic started by: ker2x on September 01, 2013, 03:23:09 PM




Title: Any software using pathtracing ?
Post by: ker2x on September 01, 2013, 03:23:09 PM
Hello forum, long time no see.

Simple question : do we now have a software rendering mandelbulb using pathtracing ?
Thank you :)


Title: Re: Any software using pathtracing ?
Post by: eiffie on September 01, 2013, 05:50:31 PM
I have been doing gi with glsl scripts for a while but my method is a bit "different". :) Here are some examples:
http://www.youtube.com/watch?v=WjWyM7TTydw
These are between 64 and 128 ray casts per pixel.
It is using a very simple method to determine a probable direction for each ray bounce (importance sampling) and then determining the amount of light energy left after the bounce (a perfect reflection loses no energy, a diffuse one colors it). The rays are followed backwards from the camera into the scene and only stop when they run out of energy, go out of bounds or hit a light.
If you are interested I can post Fragmentarium code for it. This is a different (simpler) scheme from my earlier gi efforts which were biased towards the light.