Flow of book, missing chapters?

[fluidpixel]

Not an issue as such but I wondered what the plan was for the new chapters. Having read the book there seems to be two distinct parts, one that is covering the SK stuff, which is great, then a juxtaposition to the in-depth shader and geometry chapters. There just seemed to be a chunk missing from the middle that bridges the gap between the two.

By far the best chapter for me was the sample chapter 5, which was a good balance between complexity, examples and theory.