Last few days I've searched about QEMU a lot, especially about passthrough of PCI devices. And you know what? It's complicated if you want to passthrough, i.e., GPU, and your system have only one of it. :3d_blobcat_stretch:
Now I can choose what to do - going further and making it work, or just say "fuck it, I'm done". And yes, I can't add another GPU 'cause I don't have free (non-obstructed) PCI-E slot on motherboard, and I'm using Ryzen CPU w/o graphics module...
But, maybe I can switch my CPU to one with APU, or just buy me a raiser for PCI-E slot :blobcatboopglare: