Maya / Shadow linking

V-Ray V-Ray GPU Issues
1

Hi there,
it looks like shadow linking in Maya gets ignored by V-Ray GPU. On CPU I get a nice specular from the light on the sphere through the cube. The shadow link between the cube and the light has been broken. Should this also work on the GPU? It does not with my version of V-Ray (4.3). Scene file is attached.

CPU

cpu_shadow_link.jpg
cpu_shadow_link.jpg961×540 26.9 KB

GPU

gpu_shadow_link.jpg
gpu_shadow_link.jpg961×541 25.8 KB

Maya 2019.3.1
V-Ray 4.3 vray43003_30664_2019x64
shadow_linking_problem.zip (6.88 KB)

2

Thanks for the report. It seems to occur in recent builds as well. I’ve logged the issue (internal bug-tracker id: VGPU-5812). I don’t see a workaround except rendering the specular separately in CPU, however. Disabling “cast shadows” (through VRayObjectProperties) won’t do in this case. What’s the end goal? Maybe there’s another solution.