Do you think we could get a material node to access the new volumetric lightmaps (with a “Position” input to specify where to sample it)?
I’ve only been using 4.18 for a week but run into a couple of situations already where it would be really useful. First I was making rain, and thought it’d be great if I didn’t have to use the full-blown expensive surface translucency lighting in order to get some form of lit rain (and not really have much control over it) - with volumetric lightmap access we could fake that kind of thing really cheaply (and exaggerate it too). Similarly, I was also trying out a cheap custom PP fog solution and being able to light it with the existing volumetric data would be great.
But yea… mainly I can imagine using it to fake cheap lighting on a variety of unlit materials, and do exaggerated/stylized lighting too.