Hello there!
I have to render an animation where I show an object made of several parts and so several separated materials, and one of them is a semi-transparent one that acts like a kind of a rough transparent plastic.
As the elements are coming up to the scene, this material is in the first place totally transparent and then appears with a fade in effect created by animating alpha value of the shader.
My problem is that even though the transparent material is not visible, it causes some “shadows” to appear on the material just beneath, as shown under:
What is actually really strange is that these “shadows” only occurs on two sides of the “cube” but not on the two other sides (where you can see a kind of copper band).
I tried to play with the visibility settings of the material but found nothing solving my problem. I know it is not caused by fliped normals, and these shadows do disappear when I delete the geometry of the transparent object. I also tweaked my light bounces settings, but it doesn’t manage to fix the problem.
Does someone knows what I should do ?