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Strange render artifacts when using the wrapper node and 'secondary engine == light cache'

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  • Strange render artifacts when using the wrapper node and 'secondary engine == light cache'

    I am creating some images I need using the Wrapper node applied to the material of an infinite plane. I notice the next observations:


    Light on scene: Point light

    Primary engine: Brute force
    Secondary engine: Light cache
    Sampler: Adaptive DMC and Progressive (same wrong result with both)

    Click image for larger version

Name:	01_point_light_01_wrapper.png
Views:	68
Size:	240.6 KB
ID:	990748


    Primary engine: Irradiance Map
    Secondary engine: Brute force
    Sampler: Adaptive DMC and Progressive (same correct result with both)

    Click image for larger version

Name:	01_point_light_01_wrapper_irradiance_map_and_brute_force.png
Views:	49
Size:	178.0 KB
ID:	990749


    - The issue occurs with different meshes on the same kind of scene, but always when the secondary engine is set to Light Cache.



    Light on scene: Hemi light

    Primary engine: Brute force
    Secondary engine: Light cache
    Sampler: Adaptive DMC and Progressive (same wrong result with both)

    Click image for larger version

Name:	02_light_cache.png
Views:	40
Size:	468.1 KB
ID:	990750


    Primary engine: Irradiance Map
    Secondary engine: Brute force
    Sampler: Adaptive DMC and Progressive (same correct result with both)

    Click image for larger version

Name:	02_irrad_map.png
Views:	53
Size:	467.7 KB
ID:	990751

    - In case of using a hemi light, the shadows of the object projected on the wrapper object are weak and show some distortions. And same, it happens when the secondary engine is set as Light Cache.



    Am I setting something wrong in Light Cache as secondary engine? Or could be this a bug?



    Setup of the wrapper node (same in both scenes):
    Click image for larger version

Name:	01_point_light_01_wrapper_screenshot.jpg
Views:	136
Size:	257.8 KB
ID:	990752

    (Using latest build and official VRay 3.60.4)

  • #2
    Scenes:

    01_point_light_wrapper.zip

    02_hemi_color_wrapper.zip

    Comment


    • #3
      Thanks for the scenes. I can reproduce the issue and it is a bug. It is logged in our system, but a fix will probably be included for the next major version of V-Ray.
      Alex Yolov
      Product Manager
      V-Ray for Maya, Chaos Player
      www.chaos.com

      Comment

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