Results 1 to 3 of 3

Thread: LW2019 Transparency not respected in reflections?

  1. #1
    Super Duper Member kopperdrake's Avatar
    Join Date
    Mar 2004
    Derbyshire, UK

    LW2019 Transparency not respected in reflections?

    Hi all - it's probably something I'm doing, but I have a LW2019.0.1 scene, objects are all BSDF surfaces, 5% roughness, 70% specular. The ground plane has a transparency fall off over a few meters using a Gradient node with the Input driven from a Distance node hooked into the Ground Object Position from the Input node. The transparency works well for the ground, allowing the white background to gradually take over as it recedes into the distance, getting rid of the harsh horizon line. However, I have a weird band showing in the side reflection of the locker unit, appearing where the transparency of the ground plane begins to kick in, to where it should be 100% transparent furthest away.

    Any ideas?

    Click image for larger version. 

Name:	image000_002.jpg 
Views:	56 
Size:	357.7 KB 
ID:	144197
    - web: - 2D/3D Design Studio -
    - PC Spec: Intel i9-7940X @3.1GHz | 64Gb | 2 x GeForce GTX 1080 Ti 11Gb | Windows 10 Pro -

  2. #2
    Goes bump in the night RebelHill's Avatar
    Join Date
    Nov 2003
    Recursions perhaps?
    LSR Surface and Rendering Tuts.
    RHiggit Rigging and Animation Tools
    RHA Animation Tutorials
    RHR Rigging Tutorials
    RHN Nodal Tutorials
    YT Vids Tuts for all

  3. #3
    Registered User
    Join Date
    Jan 2005
    Colorado Springs
    Be sure the Index of Refraction on the floor's Surface is set to 1.0 and the Transmittance Color is set to pure white. Perhaps because you have a white environment, the "smudges" produced by non-1.0 IoR and non-white Trans. Color may not show up in the direct rays but with the attributes of the reflective surface being "added" to it, the "smudges" might show up and cause a harder edge. Worth a try.



Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts