Physically Based Rendering, Fourth Edition: from Theory to Implementation, by Matt Pharr, Wenzel Jakob, and Greg Humphreys, The MIT Press, March 2023 (more information), Patreon page, read for free.Ray Tracing Gems II: Next Generation Real-Time Rendering with DXR, Vulkan, and OptiX, edited by Adam Marrs, Peter Shirley, and Ingo Wald, Apress, August 4, 2021 (Book's website, publisher's page), dow..