* does it work for vulkan software within the guest?
i tried to use venus with qemu and the vulkan support of crosvm many times in 2022 and 2023 but they never worked for me, only opengl works for me, so all my QEMU full system guests are configured for opengl only.
if that can fully enable vulkan inside QEMU full system guests, that would be very helpful and very powerful.

edit: I realized reading this and reading the code that this entire technology appears to be heavily dependant on the Qualcomm GPU hardware for now, meaning that it isn't generalized to virtualization hosts that have only AMD, Intel, NVIDIA, ImgTec, ARM or Apple GPU hardware yet. that is still great, it just means it can't replace the legacy virgl codepath on my AMD-based virtualization hosts yet.

I'm watching the video, at 21:30 in the video rob clark starts to explain how to add support for the other hardware, but it requires definitely extremely high skill with the C language and DRM API. i would not claim to know I can do it by myself  but maybe i can someday in the distant future, however usually when i start trying to do such a thing, someone else beats me to it and runs circles around me, and moves on to the next challenging problem before I can make much progress on my own version.