General question about render with mental ray
Hello
I have a scene with three model for exemple A and B and C. The first model affaect the B and C model with some shadow. i need to render just my B and C model without loosing the shadow from the A model. my idea was to make a two layer one for the A dna the other for the B and C but when i mask my first layer and render the B and C dosn't have the same light result us the render with the A model present. is there any truc to do it. thank you