It would be nice if we could have a dispersion effect on translucent materials as seen in Knack on PS4.
Hi Christian,
Thank you for your request. This would be an excellent feature for cinematics. I have created a feature request for light dispersion and entered it into our database.
Cheers!
Alexander
Dear Christian,
#Refraction
I don’t know if you’ve tried this already,
but for me, Refraction produces the effect you are demoing in the picture
You might want to set your refraction smaller than I do though hee hee
EDIT: if refraction is not what helps you then I dont know what your picture is demonstrating and a video might be required
Rama
Type “glass dispersion” into google and you’ll understand what I mean ;]
I’m not finding much that is that specific,
You’ve tried Refraction?
At very high amounts it does what I am seeing in your picture example 
Rama
Yeah I use refraction a lot, but I mean dispersion :]
The image you posted in you question looks more like combination of refraction and chromatic aberration.
It doesn’t have any visible caustic effects, or anything special on it.
Please note my refraction amount in this pic is positively huge, and see how it is distorting the mountain skyline.
I tried a refraction value of 100 on a little test glass table piece and it doesn’t give me the desired effect but thanks for the effort.
I too am in need of a dispersion effect. We have many jewels and gems and with out a dispersion effect they definitely don’t look like a semi-transparent jewel/gemstone We tried high levels of refraction, and nothing can give us that rainbow effect of light entering and dispersing through the object and bending the light reflected off off surfaces around the object.
I have a feeling this effect is probably super cycle intensive.
Maybe this image of [1]Vray and [2]Cuda will help you visualize what dispersion is rama.
http://cg.alexandra.dk/wp-content/uploads/2012/10/dragon-dispersion.png
ahhhh
ooooooo
that picture explains it to me
Good luck Christian and Robert!
I will sure be happy too if this comes along
Rama
That jewel Thief has looks so amazing!!! Exactly what were looking for. It seems its not so demanding too, although there was only a single jewel.
Such caustic effects are the most expensive thing to achieve even in offline renderers so i can’t imagine imitating it in a game engine wouldn’t be demanding.
We are currently tentatively planning on faking a broadly similar effect in our game using glassy materials and custom camera-dependent particle effects (sparklies). It can’t do all the kinds of effects that are needed but should be able to do some convincingly.
Here’s the general effect we’re going for:
Glass art 1: - YouTube
Glass art 2: - YouTube
Glass art 3: - YouTube