Atomic cell

[neo2068]

You could try it with an ies description of the laser. Here is Hoodedman's laser ies light
(from http://www.luxrender.net/forum/viewtopic.php?f=36&t=6485#p66844). I have made some good internal glass scattering with this approach.
http://www.luxrender.net/forum/viewtopic.php?f=14&t=6504&p=67187&hilit=neo2068#p66981

laser-final.zip

(646 Bytes) Downloaded 19 times

[Vutshi]

Thank you very much neo,

IES improves efficiency a lot for a laser!

[Vutshi]

Still, I don't understand the issue of SDS paths. Why with bidirectional integrator one can see the scattered light under the glass cell but not from the scattering media itself? Path integrator doesn't show even the light underneath the cell. Where can I read something to clarify the topic?

[hoodedmanwithsythe]

Still, I don't understand the issue of SDS paths. Why with bidirectional integrator one can see the scattered light under the glass cell but not from the scattering media itself? Path integrator doesn't show even the light underneath the cell. Where can I read something to clarify the topic?

BiDir doesn't support any scattering media yet IIRC, where as path does.
BiDir is simply showing the transmitted light patterns sooner it's not that path isn't seeing them, it's more that path will take longer to produce them, they will appear but it will take a lot longer.
I think I remember one of the developers talking about perhaps looking to doing BiDir scattering but I can't remember who and when so I might have imagined that.

[Vutshi]

That sounds strange to me. All of the images here are rendered with bidir integrator.

[J the Ninja]

Still, I don't understand the issue of SDS paths. Why with bidirectional integrator one can see the scattered light under the glass cell but not from the scattering media itself? Path integrator doesn't show even the light underneath the cell. Where can I read something to clarify the topic?

BiDir doesn't support any scattering media yet IIRC, where as path does.
BiDir is simply showing the transmitted light patterns sooner it's not that path isn't seeing them, it's more that path will take longer to produce them, they will appear but it will take a lot longer.
I think I remember one of the developers talking about perhaps looking to doing BiDir scattering but I can't remember who and when so I might have imagined that.

You're thinking of sppm, bidir supports scattering just fine.