The online platform for V-Ray users to submit, vote, and collaborate on creative suggestions.
Automatic weather control.Automate surface rain wetting or snow cover.
Discussed here - https://forums.chaos.com/forum/v-ray-for-sketchup-forums/v-ray-for-sketchup-general/1187740-is-it-possible-to-have-rain-snow-or-to-see-when-some-dry-leaves-fall-to-the-floor-with-vray