I’m creating a scene where I need to achieve the effect of light casting on a wall through textured glass, similar to this image;
I do not need to see the glass itself, the window in my scene is behind the camera and the effect does not need to be quite so dramatic as the example above. I just need to see the light casting on the wall with unusual refraction patterns.
What would be the best most efficient way to do this in Cycles bearing in mind that this will be an animation where items will need to pass between the light source and ‘window’ casting distorted shadows through it?
I’d appreciate any thoughts.