Something with Lightmix crashing DR2

[Ymauchi]

When rendering the attached scene using DR rendering with V-Ray 7 update 2 DR2 (7.20.00 build 33207), it crashes immediately.

The problem is resolved by removing the LightMix element.

Tested with max2026 and max2024
oaktest_03.zip (78.4 KB)

[hermit.crab]

We already have this logged (internal tracker ID: VMAX-15109). It’ll be fixed soon.

[Ymauchi]

Ok, so it was a known issue. I’ll wait for the hotfix.

[chris_jackson]

Any update on VMAX-15109?

[hermit.crab]

@chris_jackson

Any update on VMAX-15109?

It’s fixed in the internal builds. There will be a stable build soon enough.

[dung_nguyen3]

@hermit.crab

It’s fixed in the internal builds. There will be a stable build soon enough.

Hi, I’ve found that unchecking “show map on back” (3ds Max’s bitmap and V-Ray bitmap) doesnt work properly in V-Ray DR2. Is that a known issue?

[hermit.crab]

@dung_nguyen3

Hi, I’ve found that unchecking “show map on back” (3ds Max’s bitmap and V-Ray bitmap) doesnt work properly in V-Ray DR2. Is that a known issue?

Could you clarify? What exactly doesn’t work? I tried it on a simple scene and rendered it via DR2, and everything seems in order.

[hermit.crab]

@dung_nguyen3

Ah, sorry - that was my mistake. The issue is actually that unchecking “Show map on back” in the V-Ray bitmap doesn’t work for map channels other than 1. This happens with both the official V-Ray release and the DR2 build. There’s no issue when using 3ds Max’s native bitmap.

Here’s a link to a simple scene demonstrating the issue:
https://drive.google.com/file/d/1QHAFDAnaRNaZ7F1LA4LwYBuMibz-bgtK/view?usp=sharing

I’ve also attached an image showing what I did with the bitmap.

We already have this issue logged (internal tracker ID: VMAX-12486). I’ll add a bump on your behalf.