volume light shadows

[s0real]

i'm trying to get a volume light passing through a window to cast shadows, but i'm not having much luck.
at the moment i get a shadow on the ground, but the volume light remains constant.

i've got the ScatterVL plugin effect added to the light and i'm using Vray shadow...

anyone know how to make this work?

thanks.

[natty]

have you tried it with shadow map .... and not vray ?

[s0real]

yeah, but i have to exclude the glass from shadow casting and i've got 2 different types of glass pane in the window...

is there a way not to exclude the glass?

caustics or something?

[natty]

yeah ... on the glass material tick affect shadows

[s0real]

thanks...
trying it now.

i think the problem was not enough volume on my volume light

[s0real]

hmmm...
still not showing through the glass...

[natty]

with vray shadows ?

[s0real]

with vray shadow i don't get any shadow casting from the volume light, just constant fog...

do you think it's because my other materials (wall, windowframe) aren't Vray materials?

[natty]

mmmm ...... shouldnt make any difference ..... have you Attenuated the Volume light ??

[s0real]

nope.

no attenuation, no decay, transparent shadows...

*edit*

i replaced the wall + frame with vraymats.
no joy.

[s0real]

do you think i need attenuation turned on to get volume shadows?

i don't see what difference it would make...

sorry if i'm being thick...

[natty]

mm .....try it i would test it but my pc's are chuging away at the mo

[s0real]

nah, it didn't work with attenuation.

i've settled with excluding the glass panes for now as it was just a test to get used to the features of Vray.

i think it looks ok for the time being.


thanks for the help natty.

[natty]

that looks ok ... i'd stick with that, or are you being fussy..

[samuel_bubat]

hi there,

volume light shadows are only visible when using shadow maps ! unfortunately.
I´d like to know if it could be possible somehow to combine this feature
with raytraced shadows.. like the vray shadow.