for 2 hours i am searching online how to make light affect only logo not the Background,
use render layers, but result is fake,
then free version of K-cycles and it crashed as it only support RTX,
any way to use light linking in blender 3.2, or 3.3 or later?
Not in Cycles or Eevee. Other renderers may have such a feature, I don’t use them
which other render engines ?
this is rush job simple logo animation and want to finish that today
(No time to learn new render engine)
I don’t know, I don’t use them. Maybe Octane or Redshift, not sure. If you’re in a rush, the obvious workaround is to use several view layers and composite them.
Depending on how your scene is built, would it work if you were to limit the max distance of the light instead?
(add this setup in the light’s material)
the only workaround to get light linking in blender is with render layers for now.
Hello anglestudio,
Here are two links to BlenderBob tutorials
These may have what you need. He does talk about the need for light linking in blender.
What about making a light group for the light that is effecting the logo, look at the light group tutorial to do this. Then make a cryptomatte. Add a Mix Node and set it to Multiple. Use the Cryptomatte to separate the Logo and plug it into the top input on the Mix Node and the Light Group into the bottom input. This isn’t perfect.
There is a spot light set to 1000 above the text.
This is without the light effecting the ground
and this is with it effecting the ground
Here are the nodes
Also, I turned the plane’s glossy visibility off
This is in blender 3.3
Also, make another group for the World light and Add this with a Mix Node set to Add.
but when layers mixed later in photoshop ,
it is float not real
no relation between elements like all models in one scene ,
so what is the solution here ?
have tried layers in interior scene before
will try but what about the free version of octane in blender,
do that has this feature of light linking?
with these two restriction toggles you can control if the conten of collections e.g. are only casting shadows in a view layer, but the mesh itself is invisible.
I am long-time Octane user. I definitely recommend against trying to rush into a different renderer if you are under a deadline. There’s a lot involved with a different render.
If you could maybe post a pic of the scene setup, it would be easier to give specific info. Is my example similar to what you are doing?
This feature now included in Blender 4.0 officially
