Not a book, but I had a similar question yesterday and ended up finding this art...

		lukecameron on Oct 24, 2022 \| parent \| context \| favorite \| on: Premultiplied alpha vs. not-premultiplied alpha bl... Not a book, but I had a similar question yesterday and ended up finding this article https://tomforsyth1000.github.io/blog.wiki.html#%5B%5BThe%20.... Goes into more detail than I thought I needed!