saved irr map anim with visibility track

V-Ray for 3ds Max V-Ray for 3ds Max :: General
1

i know it’s not possible to use a saved irr map/lightmap with moving objects, but does this also apply to objects that go in and out of visibility?

i’m doing a flyaround of an exhibition space which then goes into the space, but wanted the ceiling to appear when the camera goes inside…

thanks.

2

It may work depending on the specific case… try computing the irradiance map with everything visible; then do one more pass with incremental add to the same map and with “Visible to camera” off for the objects that will have animated visibility - this is to add information about parts of the scene that may have been hidden by those objects; then you can render the final animation.

Best regards,
Vlado

3

thanks vlado.

i’ve just calc’ed the ir map with the objects hidden and it seems to have included them anyway…

i’ll try what you’ve suggested and let you know how i get on.

4

i got it to work.

i comped the irradiance map with the roof objects hidden, then unhid them when i rendered out the full animation.

when i tried previously to comp the ir map with the objects turned on i got holes in the map which left big dark areas on the final animation…

there was no need to do another pass with incremental add.

i ended up turning off the lightmap second bounce for the gi as it seemed to crash the animation in final rendering.