I was browsing a book earlier this morning and I stumbled upon a piece of code (for a gradient) that is supposed to take one step closer to looking like something that might be found in the real world. An image shows an actual use of the code.
The problem is that in my opinion, it looks really bad, as I've been playing with raytracers and juggling balls for 20 years, and this is supposed to look like a red ball.
The author clearly doesn't specify how far it is from looking real, but I would like to know whether you think it is more very far, or not so good, but acceptable.