Arseny KapoulkineNew blog post! "Measuring acceleration structures", in which we will compare BVH costs on various GPU architectures and drivers and attempt to understand the details enough on AMD hardware to make sense of the numbers!
Boosts appreciated :)
https://zeux.io/2025/03/31/measuring-acceleration-structures/
Measuring acceleration structures
Hardware accelerated raytracing, as supported by DirectX 12 and Vulkan, relies on an abstract data structure that stores scene geometry, known as “acceleration structure” and often referred to as “BVH” or “BLAS”. Unlike geometry representation for rasterization, rendering engines can not customize the data layout; unlike texture formats, the layout is not standardized across vendors. It may seem like a trivial matter - surely, by 2025 all implementations are close to each other in memory consumption, and the main competition is over ray traversal performance and new ray tracing features? Let’s find out.
Jorrit Rouwe
Andrew Schneider 📦🌩️
Aras Pranckevičius
Wolfgang Engel
Mitchell Hashimoto
Ivan Nardi