Garland said his adaptation is "a memory of the book", rather than book-referenced screenwriting, with the intention of capturing the "dreamlike nature" and tone of his experience reading VanderMeer's novel.
Rather than trying to directly adapt the book, Garland deliberately took the story in his own direction, with VanderMeer's permission.
Now here's where it gets weird again.
The you-know-who's music is not only most commonly described as "shimmering," their record cover art can usually be described that way as well. Nigel Grierson and Vaughn Oliver set the template for that kind of amorphous, glowing imagery, and got their original inspiration from a very interesting source:
That key scene would be this:
What would the significance of this be, you ask? Back to the wiki on Annihilation :
Some critics have noted the film has similarities with the science-fiction novel Roadside Picnic and its 1979 movie adaptation, Stalker. While Nerdist Industries' Kyle Anderson noted even stronger resemblance with the 1927 short story "The Colour Out of Space" by H. P. Lovecraft (also adapted for the screen on several occasions, including as Color Out of Space in 2019), about a meteorite that lands in a swamp and unleashes a mutagenic plague.
There's more to this, occult ritual and all the rest, so come on over to the Secret Sun Institute of Advanced Synchromysticism and take a deeper dive into Solaris with us.