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qm: add very basic VirGL docs

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Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
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Thomas Lamprecht 2022-04-28 21:18:37 +02:00
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commit e039fe3cd9
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@ -664,6 +664,15 @@ qemu: using cirrus considered harmful], e.g., if using Windows XP or earlier
* *qxl*, is the QXL paravirtualized graphics card. Selecting this also
enables https://www.spice-space.org/[SPICE] (a remote viewer protocol) for the
VM.
* *virtio-gl*, often named VirGL is a virtual 3D GPU for use inside VMs that
can offload workloads to the host GPU without requiring special (expensive)
models and drivers and neither binding the host GPU completely, allowing
reuse between multiple guests and or the host.
+
NOTE: VirGL support needs some extra libraries that aren't installed by
default due to being relatively big and also not available as open source for
all GPU models/vendors. For most setups you'll just need to do:
`apt install libgl1 libegl1`
You can edit the amount of memory given to the virtual GPU, by setting
the 'memory' option. This can enable higher resolutions inside the VM,