https://bugs.freedesktop.org/show_bug.cgi?id=92059
--- Comment #19 from Edwin Smith esmith@feralinteractive.com --- We are working on a beta build of Mordor to include a few fixes for upcoming driver changes on Nvidia, at the same time we have made some changes in anticipation of RadesonSi gaining compute_shader support this will mean the rain and beehives should start rendering correctly.
Engineers working on this issue can contact Feral for access if it would help in their work to fix bugs and missing features in Mesa/RadeonSi