Looking Glass uses DXGI (MS DirectX Graphics Infrastructure) to pass complete frames captured from the virtual machine's passed-through video card via shared memory to the host system where they are read (scraped) by a display client running on the bare-metal host. See this guide to getting started which provides some problem solving and user support. There is a fairly recent passthrough method called Looking Glass. If you have NVIDIA GPU, you may need to dump your GPU's vBIOS using nvflash AUR and patch it using vBIOS Patcher. However, as a workaround, you can use Xpra to detach to another Display before starting the virtual machine and reattach the Apps to display after shutting down the virtual machine. When you start the virtual machine, all your GUI apps will be force terminated. The problem with this approach is that you have to deattach the graphics card from the host and use ssh to control the host from the guest.
However, there is a workaround for passing a single graphic card. You can use kvm switch to control desktops.Ĭurrently, PCI passthrough works for dual-graphic cards only. This forum thread (now closed, and may be outdated) may be of interest for problem solving. PCI passthrough currently seems to be the most popular method for optimal performance. PCI GPU passthrough PCI VGA/GPU passthrough via OVMF However, it is not designed to offer near-bare metal performance. QXL/SPICE is a high-performance display method. Methods for QEMU guest graphics acceleration QXL video driver and SPICE client for display There are multiple methods for virtual machine (VM) graphics display which yield greatly accelerated or near-bare metal performance.
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