Hi, I have a VFX scene that needs some complex shadow matching -
I have a footage with a wall and floor, the wall casts hard shadows on the floor.
I have a scene with a wall, a floor and some mannequins (the mannequins will be composited into the footage). The wall and the mannequins cast shadows on the floor the blends together.
I'd like to render a shadow pass that only has the mannequins shadows on the floor - but here's the trick, I need the wall to still cast the shadows on the floor because the mannequin shadow has to blend in with the wall shadow to look realistic.
If I remove the wall - the shadows the mannequins cast on the floor are too hard.
Here are some screenshots - I want to keep the shadow style they cast on the floor but not keep the whole shadow the wall casts, if i keep it too then it doubles with the shadow already existing in the footage and it becomes too dark.
Here's how the render looks when i remove the wall:
And this is how it looks when I composite the shadow without the wall - it's too hard and doesnt blend realistically with the shadow on the floor:
Here's what happens when I keep both shadows in the render, the floor shadow gets too dark:
I feel like it should be a pretty easy fix, like a shadow mask or something like that, this seems like a pretty common VFX compositing need.
Thanks!