This is a very interesting conversation, and I am intending to learn about Strata.
Just OOC, do either if you know if it is the case that 5.1 and Lumen have altered the performance of subsurface scattered material and GI in a significant way?
I had been doing some experiments in 5.0 with subsurface scattering and canopy foliage that came out beautifully with Lumen. Even more beautifully, actually, when I used the Nvidia RTXGI Plugin for 5.0 (but I’ll leave that aside for now.)
But when I experiment with the 5.1 main branch, I seem to lose subsurface scattering significantly. Or maybe, now that I read this, what I am seeing is subsurface scattering that is a lot more noisy,in the same way reflections are.
I might add that the 5.1 nanite supports alpha and hence my foliage experiments, but I think the issue is independent of whether or not the material is nanite.
Anyway, I am starting to suspect that I need to understand Strata to gain better perspective on this.