Inverted box. I like it! Now I have to see if I can use scene depth texture to composite into scene properly by exiting early. Or I can work out exit point before loop using the depth. Shame these thing don’t composite together but not a major thing to worry about. Wan’t to have a go at whole sky cloud dome tracing using some ideas from the zero dawn paper.
I like the caustics! Looks like gerstner waves. Is it multiple sin/cos stacked with some remapping of ranges?