[BubRoss]

I'm guessing at this point you are purposely ignoring what I'm saying, but again, I'm explaining why it isn't used in production 3D very often. I know how to collide rays with csg, I'm trying to get you to think about how that needs to happen so you understand why it is slow. If you have a surface made up of lots of overlapping primitive shapes, what do you think the performance will be like when you need to intersect thousands of rays and figure out shading information for them?

Beyond that, again, you have to confront textures, motion blur, visualization and of course the elephant in the room, the fact that csg is not a good tool for arbitrary modeling to say the least. Think about these things before you reply "it's literally possible" again. Technically possible and useful for production animation are two very different things.