Alembic in Proxy

[christian_schneider1]

We encountered the problem - maybe a bug - that we cant use Alembic files in V-Ray Proxy objects if they are not stored locally. Seems to be a link problem.

[deyan.hadzhiev]

Hi christian_schneider1, can you share a bit more details on your setup? Are the alembic files on a shared server, or you are trying to use them when rendering via Distributed Rendering? Can you share the exact path used in the Proxy objects? What versions of V-Ray and Cinema 4D are you using?

[christian_schneider1]

The V-Ray Log error message is "Could not load mesh files) Error : -2 path is empty (could copy the text seems to be forbidden)
The Server is a shared server mounted as Z. The alembic doesnt show at all unless the path is local.
Setup is V-Ray 6.20.02, C4D 2024.4.0, Windows 11 machine Intel i9-13900k, 2xRTX 4090, 64gbs of Ram

Locally I can render the alembic in proxy - and see it depending how the scene was structured before creating the .abc file.

[zhanet.georgieva]

Hello christian_schneider1,

We couldn't replicate the issue. To investigate further, could you provide some details:

• Which platform were the alembic files originally exported from?
• Are you encountering problems with other assets (like textures) from the same shared server?
• Are the paths used when loading the .abc files relative paths?
• Does the issue persist when loading .vrmesh files in the V-Ray Proxy ?
• Are you using Distributed Rendering?
• Please share the complete log file for further analysis.

Thank you.

[christian_schneider1]

Sure thing zhanet.georgieva,

• Which platform were the alembic files originally exported from?

I exported the alembic f-i-l-e [Why do I get a Error 403 if I try to write file after alembic?? ] (single file) from Cinema4D after creating a mesh volume (openVDBmesher) from particles using X-Particles.

• Are you encountering problems with other assets (like textures) from the same shared server?

No I dont encounter any problems with other assets from the shared server.

• Are the paths used when loading the .abc files relative paths?

No I have been using absolute file paths.

• Does the issue persist when loading .vrmesh files in the V-Ray Proxy ?

No the issue does not persist when loading .vrmesh files - we store all chaos cloud files on the shared server too.

• Are you using Distributed Rendering?

I intend to use distributed rendering but did not when encountering the error.

• Please share the complete log file for further analysis.

Sure -
[14:52:49.744] V-Ray Frame Buffer message log initialized

[14:54:18.665] Bitmap manager created.

[14:54:18.672] Setting number of rendering threads to 31.

[14:54:18.672] GI engines: 'Brute force' and 'Brute force'

[14:54:18.672] Reducing shading rate from 6 to 2 for interactive rendering

[14:54:18.673] Preparing renderer...

[14:54:19.042] Using per-pixel filtering for IPR.

[14:54:19.045] Preparing scene for rendering... (0.0%)

[14:54:19.045] Tiled texture cache set to 4096 MB

[14:54:19.046] Preparing scene for rendering... (finished in [0h 0m 0.0s]) (100.0%)

[14:54:19.046] Light tree is enabled with clamp coefficient 0.1 and even split coefficient 1.

[14:54:19.055] Using lowest thread priority.

[14:54:19.489] Max ray intensity is enabled: rendered result may have incorrect brightness.

[14:54:19.490] Consistent lighting elements are enabled.

[14:54:19.490] Disabling info and debug messages for IPR.

[14:54:19.490] Log dump enabled for warnings and errors only

[14:54:19.494] Warning : Could not load mesh files "Z:\04 Transfer\Test\FlowFluidSim\a-l-e-m-b-i-c\Fluid2.abc"! [IT Word for problem {Thanks again for Error403}]: "[AlembicMeshFile::init()] -2: File "Z:\04 Transfer\Test\FlowFluidSim\alembic\Fluid2.abc" is empty!"

[zhanet.georgieva]

Hey christian_schneider1, can you share the alembic file?

[christian_schneider1]

Yes zhanet.georgieva.

You can get it via wetransfer here.