ITOOSOFT Forum

Forest Pack => Forest Pro (*) => Topic started by: ZO6039 on June 30, 2025, 10:14:34 pm

Title: FP cannot render objects with VRayLightMtl materials on renderfarm
Post by: ZO6039 on June 30, 2025, 10:14:34 pm

I have a simple setup where ForestPack scatters spheres on terrain to simulate city lights in the distance. The spheres have VRayLightMtl materials applied to make them self-illuminated. When I render my scene locally then everything works fine, but when I try to render my scene on render farm then render crashes. By log file I assume the problem is VRayLightMtl material with Direct illumination. I made a work around by collapsing FP object to Mesh. I previously used Multiscatter plugin for such purpose and it worked fine. Could you look at this problem, please?

Title: Re: FP cannot render objects with VRayLightMtl materials on renderfarm
Post by: Michal Karmazín on July 01, 2025, 10:59:13 am

Hi,

Thank you for reporting this. As you pointed out, when rendering via network rendering, V-Ray generates an error related to the Direct Illumination feature of the VRayLightMtl material. We'll investigate it. In the meantime, to prevent this error, please set Display > Render > Mode to Meshes.

Best regards,

Title: Re: FP cannot render objects with VRayLightMtl materials on renderfarm
Post by: iToo on July 02, 2025, 10:21:22 am

We just contacted to Chaos about this issue: to use Direct Illumination Forest object must return a triangle mesh.
But by default, Forest generates instances of the source object and a null triangle mesh.

To fix it, just set Display->Render to Meshes, as Michal suggested.

Title: Re: FP cannot render objects with VRayLightMtl materials on renderfarm
Post by: ZO6039 on July 02, 2025, 10:25:36 am

Thank you!