I’ve written an article on how volumetric fog works in AnKi. You can read it at ARM’s developer portal. This is still in progress but for now the performance is acceptable.
Volumetric lights/fog test
Short video of a test for volumetric lights. It is using the same information as the cluster deferred shading path. The shader iterates every cluster and samples at a random position inside the cluster. The result is too noisy at the moment, especially with shadows.