virt-manager and virgl / Spice / OpenGL

[Scott Talbert]

Hi,

Is virgl/OpenGL support through virt-manager supposed to work and perform 
well?

I have the following:
Host OS: Fedora 32
Guest OS: Debian Unstable

In virt-manager, I have the following:
Display Spice
   Type: Spice server
   Listen type: None
   Password: Blank
   Keymap: Blank
   OpenGL: Checked & /dev/dri/renderD128

Video Virtio
   Model: Virtio
   Ram: -
   Heads: 1
   3D acceleration: Checked

In the guest OS:
talbert at debian-unstable:~$ sudo dmesg | grep '\[drm\]'
[    1.947975] [drm] pci: virtio-vga detected at 0000:00:01.0
[    2.019988] [drm] features: +virgl +edid
[    2.022522] [drm] number of scanouts: 1
[    2.022529] [drm] number of cap sets: 2
[    2.048982] [drm] cap set 0: id 1, max-version 1, max-size 308
[    2.049125] [drm] cap set 1: id 2, max-version 2, max-size 688
[    2.049332] [drm] Initialized virtio_gpu 0.1.0 0 for virtio0 on minor 0

So it *seems* like things are configured correctly?  However, performance 
is not great.  Performance is much better if I switch back to QXL video.

Any ideas?

Thanks,
Scott