Different values

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

Question…Why does it seem at times, in certain scenes, the light cache preview is very different from actual BF pass?!
It’s really sucking a lot of time up in test renderings and I’d like to know why this happens.

In the example, you can see the rendered buckets are very much darker than the light cache preview.This makes me think it’s looking one, way, but after a few minutes, I get a different result and have to cancel.

Thanks:face_with_spiral_eyes:

Vray 2.5 latest stable build
Max2014

different value why.jpg
different value why.jpg272×117 39.6 KB

2

Yes, I have noticed that, too.

3

Also, I noticed that using RT won’t help me in this case, because only the occluded color of the vraydirt map is shown in RT buffer (as if it were just a simple RGB value, not dirty.)

4

Does this still happen with V-Ray 3.x?

Best regards,
Vlado

6

is it from color mapping?

7

Then I’ve no idea, would be best to post the scene.

Best regards,
Vlado

8

Experienced this too sometimes, would be good to know what causes this.

9

Could happen with Store with irradiance map enabled:

for an example

2015-11-26 15_38_20}.jpg
2015-11-26 15_38_20}.jpg630×566 151 KB

11

I got you email; sorry for not replying - we are preparing a new beta build and it’s a bit busy.

Best regards,
Vlado