See:
https://www.phoronix.com/scan.php?page=news_item&px=XWayland-21.1.2-RC
See Chapter 38. OpenGL and Vulkan on Xwayland in the README:
cat /usr/share/doc/nvidia/README | less -p "38A. OVERVIEW"
There are quite a few issues and we don’t have all the new packages yet: