Dispersion with VRAY

Dispersion with VRAY By Sven Brooke All images rendered in 3DSMAX using VRAY 1.09.02g.. I wanted to find a way to creating an 'in camera' dispersion effect, rather than the traditional m

Dispersion with VRAY

By Sven Brooke

All images rendered in 3DSMAX using VRAY 1.09.02g System Athlon 1800+ 512Meg RAM

DISCLAIMER: Nothing here is in any way a final polished image, they are just the results of some tests I was mucking about with, that I thought I'd share

I wanted to find a way to creating an 'in camera' dispersion effect, rather than the

traditional method of faking it based on rendering 3 passes each set to slightly different IOR values, and combining the RGB channels in Photoshop or similar After a bit of experimenting I managed to duplicate the effect using three versions of the VRAY material (one each for red, green and blue) combined with a Shellac material, which turned out to be a lot faster to render than previous dabblings with Vray and Shellac And had the bonus of creating a dispersed caustic effect which i hadn't banked on :)

Its like a disco ball Click to download AVI

Each frame took 20 seconds or less to render

By popular request, here's a zip file containing the max4 scene file and a mat file Click

to download Enjoy, and create something funky with it

May not render properly when first opened Seems that sometimes shellac and composite materials need to be 'woken up' by clicking on them, going through the submaterials and dragging them to other slots in the material editor before they render as they should

Test scene with IOR based on glass (1.6) It took a couple of minutes to render

Same scene different arrangement

same scene but with IOR of around 2.417 (diamond)

Hey its that scene again A test with HDRI lighting and reflections The severe artifacting

on the image is caused by the low GI settings and a small bucket size - I was impatient to see this thing as it rendered It took a whopping 30 minutes

Vlado's waxdragon sample with a glass makeover, excuse the lack of antilaising, it was taking too long to render

Same dragon, in diamond.

All images created by Sven Brooke with a digital screwdriver