I tried it on SunTemple demo. Idk about performance, since I don’t know at which stat group to look for GI rendering time, but
what I really like, is that this technique also considers indirect shadowing from directional light. Which is not that obvious in most other attempts at GI.
Also. It doesn’t seem to affect metallic surfaces right now. In anycase great work! It is already farrrrrr better than any volume technique (cough lpv, cough). I could literally light entire SunTemple demo with skylight intensity set at 0.