Can i render out a shadow cast from invisible object. Render out on alpha channel

Development Rendering
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1

So
1:if i wanted to have a figure walking and cast a shadow.
2:Hide the figure but still have the shadow
3:have the shadow on an alpha layer…
4: render out just the shadow?

Is this possible?

I think this would work on a white ground plane , but on alpha would be better.

Any hacks or work-arounds?

Thanks

2

Hey there, you can try the Render in the Main Pass.It’s in the details panel Details->Rendering->Render in Main Pass.

3

Thanks, I’ll take a look at that. only just started unreal so just trying to work out how to composite a huge walking army.
Cant get my head around blueprints and nodes so gonna try do it old skool style.
Its a must i have the shadows seprate on an alpha or white b/ground
Thanks for reply :smiley:

4

Have you resolved this man?

5

While searching for a solution to another problem I stumbled across the following:
Activating “Affect Indirect Lighting While Hidden” and deactivating “Visible” on the mesh seem to do what you are looking for but ONLY IN THE EDITOR :confused:

I suppose the post process settings and/or some other setting for the play view might do the trick. Maybe this points you in the right direction :slight_smile:

2023-05-30 hidden shadow
2023-05-30 hidden shadow2078×705 144 KB