Virgl3d, hardware accelerated graphics in guest.

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▶Virgl3d, hardware accelerated graphics in guest. Anonymous 04/01/18 (Sun) 18:42:58 No.891849 [Watch Thread][Show All Posts]

I finally got this up and going with Gentoo+qemu/kvm/virt-manager, I figured I would report the results in case anyone had their hopes up for this.

It's so slow it's unusable. Don't get your hopes up. With the host integrated intel hd graphics pulling 10k in glxgears, virgl3d pulls 200fps inside of the guest. It's using the gpu based on measured cpu usage and the guest saying virgl3d is enabled. Software rendering on the same host/guest measures at 1000 fps. Virgl 3d is so slow it causes almost unusable mouse lag.

Has anyone had better results with this? Presumably with a beastly GPU the performance might be better than software rendering.

▶Anonymous 04/01/18 (Sun) 19:09:35 No.891855

i take that back..

it's silky smooth if you install spice-vdagent.

i was testing this in an xubuntu live vm. the 3d performance with glxgears is still fucking terrible, 180-200fps, but i've never in my life seen a guest vm have this smooth performance moving the window around.

▶Anonymous 04/01/18 (Sun) 19:34:13 No.891860>>891868

I've tried the dude bro GPU passthrough guides, but I think I'm having issues because of my Nvidia card. I had my card blacklisted, IOMMU turned on, and set vfio-pci ids for the card, updated initramfs and grub. When I added the GPU PCI host device in virt-manager and tried to boot, it complained and wouldn't boot. I was set to purchase VMWare Workstation when I noticed Workstation Player is free (as in paydom) for non commercial use. It will still be slower than the real thing, but at least I can enjoy my H games.

▶Anonymous 04/01/18 (Sun) 19:43:11 No.891866>>891868

>Virgil is a research project

<why isn't it fast?????

▶Anonymous 04/01/18 (Sun) 19:52:38 No.891868

>>891866

considering how slow it is for 3d, i don't know what spice-vdagent is doing behind the scenes for the graphics but it's doing something significant, atleast for 2d. it goes from a slideshow to unbelievably smooth for the window manager and scrolling, and it's not the cpu doing it.

i thought spice-vdagent was just for little shit like copy-paste and moving the mouse in and out of the window, for virgl it's doing way more. I don't even care about gaymes, or 3d acceleration. I just want scrolling to be smooth and moving windows around to be smooth, 2d acceleration things, and it's blowing my mind how smooth this is.

>>891860

pci passthrough is the ultimate way to go. even with this virgl3d shit, i'm sure i'll run across bugs. try not using virt-manager, you don't need it in anyway, you can just make qemu scripts. virt-manager may bitch for no reason when qemu will totally allow it.

▶Anonymous 04/01/18 (Sun) 20:02:38 No.891873

intel also has a newer option to 3d accelerate vm's with the integrated gpu, GVT

https://github.com/intel/gvt-linux/wiki/GVTg_Setup_Guide

you need a broadwell or newer though.

/tech/ - Technology★

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