V-Ray : Building Embree Static Hair Tree failed

[TKIO]

Hi,
I have a scene with 135k hair using xgen and each time I want to render zooming in close, I get this message.
Error: line 1: V-Ray : Building Embree Static Hair Tree failed: [CommitEmbreeThread::threadProc] 4: Committing scene failed

To fix it, I have to zoom out, start rendering and then zoom back in :s

Another issue is working with AlSurface shader. there is a "remap value" to control the reflection1 roughness and just out of the blue from 1 render to another, the roughness is gone... It looks it's still there but as if the value was at 1.0... If I decrease it to 0.5, still nothing but If I get it down to 0.2 then the roughness is back... Really strange.

Cheer,

Jacques.

[hermit.crab]

Regarding the first issue, you may be running out of memory. Try monitoring your RAM utilization and see if that is indeed the case.
Regarding the second issue - does this happen on V-Ray CPU or GPU? Are you using a particular map in that slot? Could you attach a video reproduction of the issue and/or screencaps? Otherwise, it would be best to send a simplified scene to support@chaosgroup.com so we can take a look. Mention this thread in the e-mail along with your V-Ray and host platform versions.

[TKIO]

Hi Aleksandar,

Yes you're right about the first issue... The loaded scene takes around 13 Go and when I start rendering, the 150k hair takes the rest of memory up to 32 Go and that's all I have. I'm glad not having to render a creature with millions of hair as I wonder how much memory I'd need for it.

For the second, it's CPU and the texture is a multiple tiles black and white texture in the remap... But I had other issues as I think it comes from the AlSurface and started another thread ( https://forums.chaosgroup.com/forum/...a-focal-length ) and provided support a simplified scene where I could reproduce the issue.

Thank you,

Jacques.