Alpha zero material with Cycles?

Support Lighting and Rendering
1

Hello Blenders,

I want a material returning an alpha value of 0 after him. Every object behind it will be hidden. It is usually called a blackhole.

I set a transparent shader node to RGBA 0

It works with Eevee but not in Cycles, the alpha is still white (1).

How do we do this in Cycles?

2

I think what you want is a Holdout.

https://docs.blender.org/manual/en/latest/render/shader_nodes/shader/holdout.html

You can also do it with collections, I think.

https://docs.blender.org/manual/en/latest/scene_layout/collections/collections.html?highlight=holdout#restrictions

1 Like
3

Ho finaly! thank you

4

Hey, just saw this, also can mark an object that way.

holdout
holdout530Ă—643 37 KB

Your welcome.