Omitting Moving Objects from GI

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

In some of the animated cameras, the moving objects are so far away that I don’t think they need to be part of the GI solution and it would save alot of time in the pre-calculations to just do the precalcs for a static scene.

To do this, is it a matter of going to the VRay properties and turning off the Visible to GI for the moving objects?

Thanks

2

Yep, I that should do it.

3

You will also need to turn off the “Receive GI” option for those objects.

Best regards,
Vlado

4

Thanks for that, I’m doing a test now.

When I am rendering an animation, should I have ‘Use Camera Path’ ticked on both the Irradiance Map and Light Cache ?

5

Also have a look at this great script from Guillermo Leal:

http://www.scriptspot.com/3ds-max/gtools-objectocclusion-utilities

6

Looks excellent, have you tried it ?

7

Turning off the GI options and pre-calculating for a static scene worked better than pre-calculating each frame. I found less anomolies/flickering in the scene and the render times were 9 hours in comparison to 24 hours !

Thanks for your help.

8

I can tell you that Guillermo’s script works excellent. We’ve used it here for a couple of years for anything moving (cars/people/swinging gates/etc.) It takes a few tweaks to the multiplier, but its nearly seamless.

peakyfreak