various VRAY questions

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

just recently switched from over 10 years of using max scanline to vray and I had a couple of questions

1: is there still a need to include and exclude things from certain lights to improve render times?

2: is there still a need to include and exclude things from reflections calc’s to improve render times, and how do I do it?

3: What does this mean? “warning: scene is too far away from origin. possible raycast errors”

4: does vray support standard cameras with “correction modifiers” appled to them

i sure theres more but I will start with these

once again,

thanks

2

1: Probably not - render in passes instead. You’ll get innacurate gi though.

2: You can’t since vray has its own reflection type and those controls aren’t available.

3: Your scene is really far away from 0,0,0 - it means you might get some inaccuracies with rays missing objects far away - might slow down scenes a bit. might also happen with scenes that have huge scale - stuff like autocad imports of big developments.

4: Far as I know yes, it was an issue a while back but they got it sorted.

3

actually I think you can, both via max’s and vray’s objects properties. if I understand the question correctly.

I think I remember there might be a problem (I remember having some weird dots showing up in a couple of cases), but you could sort it out unchecking “max-compatible shadecontext” in the system rollout.
but I guess John’s right and it’s now sorted.

4

Re: various VRAY questions

1. It’s possible yes, vray completely supports standard max lights, just press the “exclude” button on the modify panel with the light selected.
2. I believe RC4 has support for excluding objects from reflections, although Vray does reflections very fast and I personally have not found it necessary to do this.
3. CTRL-A, Group->group, F12, 0, 0, 0, should help fix this warning
4. Yes, no problems here ever.

-Colin