Is everyone using Brute Force as Primary now?

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

I watched a few of Grant Marshall’s videos and I saw he is using Brute Force for his Primary bounces. Are most folks using Brute now and not IR Map for arch rendering. Is this just a 3.0 thing?

2

we’re not, it’s much faster in 3.0 but it’s still 5x slower. spending a little time optimizing is worth it to us instead of just banging renders onto a farm and waiting. A lot of people in the industry have switched over though.

3

for interiors it still makes sense to use irradiance. A good irmap settings will get you the BF look at a fraction of render time. For exterior and some other shots I tend to use BF just because its hassle free. Let the computer do the work.

4

I have a question, should there be a huge difference in lighting when using BF over IR? I just tried a scene for the heck of it and IR rendered normally. Then went in to render settings and only changed the IR to BF and left it default and hit render and the BF rendering came out substantially darker than the IR one. Is this normal?

-= Edit =-
Here is a pic of what happened.

TAC-45 Jan 2015 BF-IR Test 03.jpg
TAC-45 Jan 2015 BF-IR Test 03.jpg720×118 80.9 KB

5

I’m interested to find out about this as well. I had a similar cast on a job last week. I had a feeling it was due to the IRmap being extremely undetailed and wishy-washy, with the BF being much more detailed due to the nature of BF, resulting in a different overall light level. But I have no idea if this is the reason…

6

In the ideal case the result should be the same. However if you have lights that have “store with irradiance map” enabled, they will render black with BF.

Best regards,
Vlado

7

Never thought of that, I most likely have my lights set to store with IR map. Thanks Vlado I’ll have a look see.

8

I switched to using bf/lc when vray 3 was released. But I also got more rendering power at the same time… so its sort of balanced out. I do mostly interior renderings these days.

9

would it not make sense to ignore the “store with irradiance map” tickbox when not using imap?

10

Yes, it’s been on the “to do” list for a while, and is one of those things that I always forget.

Best regards,
Vlado

11

id imagine the to-do list never gets any shorter. :slight_smile:

12

No, it doesn’t :slight_smile:

Best regards,
Vlado