Caustics

[vlado]

Here is an interesting image that is rendered only with photon mapping as both primary and secondary GI engine:


It' s kind of interesting since the room is lit entirely by caustics.

Best regards,
Vlado

[RErender]

hmmm, is the photon engine evolving or has this always been possible? I have not touched them for a loooong time.

[vlado]

It has always been possible, although typically you'd get dark corners where the walls meet - which has been corrected to a great extent now.

Best regards,
Vlado

[siliconbauhaus]

nice one Vlado....just as I'm getting to grips with LC I have to re-learn photons...wheeee

[vlado]

Hehe, it's very slow to get this kind of images smooth enough, and the method I used is not very practical The light cache is still a lot faster, if you don't need caustics.

Best regards,
Vlado

[gafl]

OOOhhh !
Very interesting phisical shapes of the light.
Impressive!
Gaël

[Metin_7]

That's quite an interesting image Vlado. Could you tell me why this is a photon mapping specific feature? Isn't this possible using other GI methods, such as IM and/or LC?

I know that you can assign a number of photons to lights to create caustics, but can't you use IM and other GI methods and turn on caustics to get the same effect?

Cheers,

Metin

[vlado]

I know that you can assign a number of photons to lights to create caustics, but can't you use IM and other GI methods and turn on caustics to get the same effect?

Well, you can get this effect with backward GI too, but it's going to take a lot more time. This is because the light is very small, and the probability that a GI ray will hit it is also very small.

Best regards,
Vlado

[tom schuelke]

Hmm,

looks nice so far. I think the caustix could be getting faster in Vray. in my opinion , caustix, are one of the (few ) weak points in vray. complicated to set up and not as superfast as the rest of vray.

but at last i dont use them often enough to realy be abel to judge them .


Tom