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Welcome to Rendering Tutorial site. This site is develop to help artist, architects, advertisers, visual artists and hobbyist a place to share, gain and learn from tutorial writers, important knowledge, tricks and tips in using rendering and image processing software. Some of the link here were cross posted from other sites, some of them were develop for this site, and some of them were shared wholeheartedly by different individuals.

Tuesday, 4 October 2011

'V-Ray Caustics'

'V-Ray Caustics'

by Ricardo Eloy

Software Used:

3ds Max and V-Ray

Here's a quick 10-minute tutorial on how to create good looking caustics using V-Ray without spending hours in calculations. The whole concept is pretty simple and the final setup should not take long nor stand on one’s way while working on a scene.
First, we have to understand why the heck caustics take so long to calculate (if you want something that looks remotely good). And there’s only one word to explain it: waste. What most people do is to try to generate caustics using the same lights that light the scene, and that causes a huge waste oftime. Simply because you don’t need V-Ray to calculate every single photon a light emits. You only need those that actually cause the caustic effect (which are the minority, of course).
Then, what if you could calculate just those photons? What if you could simply forget about all the waste and complicate settings and use your system’s resources to calculate only those few to maximum effect? That's the objective of this tutorial.

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