Results 1 to 6 of 6

Thread: Spot Info node in 2020 to catch indirrect rays ?

  1. #1
    geo messy madno's Avatar
    Join Date
    Feb 2009
    Location
    Germany
    Posts
    846

    Spot Info node in 2020 to catch indirrect rays ?

    In older LW versions there was a spot info node which helped to catch ray types and do something with them.

    I am now trying to catch the indirect rays of an env light. Goal is to alter the saturation during render.

    Is there a way to this? Maybe something in image filter?

  2. #2
    TrueArt Support
    Join Date
    Feb 2003
    Location
    Poland
    Posts
    8,122
    In LW 2018+ you have "Input" node which is present immediately after opening Surface Node Editor..

    It has "Ray Type" output.

    I am now trying to catch the indirect rays of an env light. Goal is to alter the saturation during render.
    Can you show nodal setup which you used to do that in older LW?

  3. #3
    geo messy madno's Avatar
    Join Date
    Feb 2009
    Location
    Germany
    Posts
    846
    In the past I did it with a surface (I wanted the floor texture to add more color to the GI).
    But now I am searching for a way to do this with the color coming from the ENV lights in 2020.
    Idea is to not only give the ENV light a fixed color tint via the GUI but to get the color it contributes to the GI (from an EXR panorama) and alter that regarding saturation or so.
    Would also be ok if it is possible with Portals which I anyway have in front of the room windows.
    But I think it is not possible for a non coding LW user, if at all.

    Click image for larger version. 

Name:	GI_Color-Bleed.png 
Views:	24 
Size:	207.7 KB 
ID:	148000

  4. #4
    TrueArt Support
    Join Date
    Feb 2003
    Location
    Poland
    Posts
    8,122
    Did you try Ray Type Switch node?

    Add Ray Type Switch node to your nodal network, plug Ray Type from Input to it,
    then plug your regular material to Default input in Ray Type Switch,
    make second material and plug it to Radiosity input in Ray Type Switch.

    TrueArt's Node Library 2020
    http://nodelibrary.trueart.eu

    has special utility Bitfield node, which can extract bits from integer scalars, and give you true/false which can be used in your nodal networks.

    When I am toggling options in Render Globals I see change caused by this nodal network..
    (you would have to figure out what each bit means by yourself..)

    Click image for larger version. 

Name:	Bitfield node.png 
Views:	109 
Size:	349.5 KB 
ID:	148003
    Last edited by Sensei; 05-29-2020 at 02:13 PM.

  5. #5
    Registered User
    Join Date
    Aug 2016
    Location
    a place
    Posts
    2,353
    used to use dbw shadermeister to globally adjust surfaces too. was great.

    lightwave 2020 needs a global shading editor

  6. #6
    TrueArt Support
    Join Date
    Feb 2003
    Location
    Poland
    Posts
    8,122
    Quote Originally Posted by gar26lw View Post
    used to use dbw shadermeister to globally adjust surfaces too. was great.

    lightwave 2020 needs a global shading editor
    TrueArt Global Materials does not work with LW 2020?

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
  •