[mysteria]

The SPICE backend has decent OpenGL 3D support with software rendering, it's slow but it works for simple graphics. It's intended for 2D so the desktop's pretty fast IMO. That only works for Linux and Windows guests though, not Apple ones.

MacOS VMs do work in Proxmox with a Hackintosh setup but you pretty much have to passthrough a GPU to the VM if you're using the GUI. Otherwise you're stuck with the Apple VNC remote desktop and that's unbearably slow.

[zozbot234]

For paravirtualized hardware rendering you can use virtio-gpu. In addition to Linux, a Windows guest driver is available but it's highly experimental still and not very easy to get working.

[zbrozek]

What's the best solution for remote viewing with virtio-gpu? I vaguely recall that it had some incompatibility with spice.

I have a bunch of qemu/kvm virtual machines for various tasks. For two of them I decided that graphics performance needed to be at least OK and ended up buying and passing through old Quadro cards. It'd be lovely to not have to do that.

[mysteria]

I don't think virtio-gpu works on SPICE. I only use it for VMs on my desktop as I can display the output on the local machine using virt-viewer.

[zbrozek]

Still the case, huh. That's unfortunate. All of my VMs run on a headless server, so my only means of use is via some form of remote desktop.