Issue with animation mode of IRmap

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

If I render this scene as a single frame with the IR map calculating at the same time, it renders fine.

If I do a single frame IR map, save to file, and render from that saved one, it works fine.

But if I render a sequence of IR maps to file with the animation mode, and then render one frame of the animation (even just using ‘from file’ mode), I get this:

Which isnt good.

Whats the difference between rendering the irradiance map single frame and animation pre-pass, aside from the sequential numbering? Whatever that is, my chairs dont like it. Theyre all vray materials too.

2

What are the materials of the chairs? Also, what is the secondary GI engine set to for the final renders?

Best regards,
Vlado

3

The chair materials are vray materials - just bitmap within colour correct to add a tiny bit more contrast, spec & bump. Metal on them is as simple as it gets, dark diffuse and high reflection.

The secondary bounce is brute force, 8 subdivisions and 5 secondary bounces.

4

Hm, no immediate idea then, I will have to take a look at the scene. Have you changed object counts (e.g. hide/unhide) objects between the calculation phase and the rendering phase?

Best regards,
Vlado

5

Not at all - it is an xref though, could that be causing it?

I’ve got my model in one scene, and i’m rendering from one which just contains lights/cameras and render settings.

6

Ok, and what are your irradiance map settings (min/max rate in particular)?

Best regards,
Vlado

7

What’s it look like if you assign an override material? Or tick the show GI only. Whatever helps isolate the problem!

8

It’s set to medium preset, 60/30.

Combustion is just rendering at the moment so I cant open the scene, i’ll edit all the other number in 12 minutes from now…