Results 1 to 7 of 7

Thread: Light exclusion

  1. #1
    Registered User pnevai's Avatar
    Join Date
    Nov 2003
    Location
    South Florida
    Posts
    45

    Light exclusion

    I have an luminous object in a layer. I go to that objects properties and set it to exclude all lights. It shows up being excluded in the light properties panel. Yet when I change the brightness of the light in the scene that object still is effected by that light. This is really annoying as due to this the side facing away from the light is darker than the side facing the light. I thought it may be the shadows setting so I also disabled all of the shadowing for the object but I still have this issue. The light in this case is your standard distant light.

    Is this a bug?

    LW2013 latest version.

  2. #2
    LW 2013?

    Sounds like a bug, if you mean 2018, report it.

    However as a workaround, if you don't want it to be affected by any light, just set it's diffuse, specular, reflection components to be 0, that way it won't recieve any light

  3. #3
    Registered User pnevai's Avatar
    Join Date
    Nov 2003
    Location
    South Florida
    Posts
    45
    Quote Originally Posted by Tobian View Post
    LW 2013?

    Sounds like a bug, if you mean 2018, report it.

    However as a workaround, if you don't want it to be affected by any light, just set it's diffuse, specular, reflection components to be 0, that way it won't recieve any light
    Fortunately it still works when you set the surface of the object to standard. But does not work when set to BSDF. When set to BSDF there is no node combination where the object is not effected by the lights in the room at least not the distant light.

  4. #4
    That doesn't sound right. Can you post a test scene?

  5. #5
    Not so newbie member lardbros's Avatar
    Join Date
    Apr 2003
    Location
    England
    Posts
    5,718
    Just tried it here, and it seems fine to me. There might be something specific about your scene that's causing issues?
    LairdSquared | 3D Design & Animation

    Desk Work:
    HP Z840, Dual Xeon E5-2690 v2, 32GB RAM, Quadro K5000 4GB
    Desk Home:
    HP Z620, Dual Xeon E5-2680, 80GB RAM, Geforce 1050 Ti 4GB

  6. #6
    Electron wrangler jwiede's Avatar
    Join Date
    Aug 2007
    Location
    San Jose, CA
    Posts
    6,348
    Just tried it here too, couldn't replicate what the OP witnessed.
    Click image for larger version. 

Name:	LW2018_luminous_odd_d0.jpg 
Views:	23 
Size:	171.7 KB 
ID:	143211
    Last edited by jwiede; 10-25-2018 at 04:56 PM.
    John W.
    LW2015.3UB/2018.0.7 on MacPro(12C/24T/10.13.6),32GB RAM, NV 980ti

  7. #7
    Curmudgeon in Training Ma3rk's Avatar
    Join Date
    Mar 2003
    Location
    Pasadena, CA
    Posts
    1,020
    Don't think it will exhibit the problem with Princ BSDF.

    In another thread, https://forums.newtek.com/showthread...=1#post1557152 I found that using a Standard surface, the ojbect doesn't respect the Exclude at least for Reflection. Haven't tested for other attributes. Frankly that's what the programmers are supposed to do.
    "Never be a cat in a cartoon. Never." Chief Wiggum

Bookmarks

Posting Permissions

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