How to use VirGL in virt-manager for virtualized GPU acceleration?

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1

I am on an Intel i7 with an integrated GPU. In theory this should support VirGL.

virglrenderer is preinstalled on Fedora by default, at least on the atomic images.

How can I check if it works by default, is it enabled by default when creating a VM in virt-manager?

This is how you would enable it manually when building QEMU

./configure ... --enable-opengl --enable-virglrenderer ...

The software stack that makes up VirGL support is:

Guest side:

  • MESA OpenGL driver
  • Linux kernel VirtIO GPU driver

Host Side:

  • Linux kernel with KVM enabled
  • QEMU
  • The GPU hardware and drivers

link

3

In the Display Spice section of the VM’s config, tick OpenGL and set Listen type to None. In the Video Virtio section, use Virtio and tick 3D acceleration.

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4

thanks! Works great!

aaand I am running COSMIC in a VM :smiley: