Installation on other distributions
Looking Glass Client
This guide will step you through building the looking glass client on Debian based systems from source, before you attempt to do this you should have a basic understanding how to use the shell.
Building the Application
Build Dependancies
- binutils-dev
- cmake
- fonts-freefont-ttf
- libsdl2-dev
- libsdl2-ttf-dev
- libspice-protocol-dev
- libfontconfig1-dev
- libx11-dev
- nettle-dev
Debian (and maybe Ubuntu)
apt-get install binutils-dev cmake fonts-freefont-ttf libsdl2-dev libsdl2-ttf-dev libspice-protocol-dev libfontconfig1-dev libx11-dev nettle-dev
Fedora 29+
yum install make cmake binutils-devel SDL2-devel SDL2_ttf-devel nettle-devel spice-protocol fontconfig-devel libX11-devel egl-wayland-devel wayland-devel mesa-libGLU-devel mesa-libGLES-devel mesa-libGL-devel mesa-libEGL-devel
OpenSuSE Leap 15.0+
zypper install make cmake binutils-devel libSDL2-devel libSDL2_ttf-devel libnettle-devel nettle spice-protocol-devel fontconfig-devel libX11-devel libconfig-devel libwayland-egl-devel
Downloading
Either visit the site at Looking Glass Download Page
Or pull the lastest using the git command.
git clone https://github.com/gnif/LookingGlass.git
Building
If you downloaded the file via the web link then you should have a 'zip' file. Simply unzip and cd into the new directory. If you used 'git' then cd into the 'LookingGlass' directory.
mkdir build cd build cmake ../ make
Should this all go well you should be left with the file looking-glass-client. Before you run the client you will first need to configure either Libvirt or Qemu (whichever you prefer) and then setup the Windows side service.
Configuring libvirt
This article assumes you already have a fully functional libvirt VM with PCI Passthrough working on a dedicated monitor. If you do not please ensure this is configured before you proceed.
If you are using QEMU directly, this does not apply to you.
Altering the libvirt Configuration
Add the following to the libvirt machine configuration inside the 'devices' section by running "virsh edit VM" where VM is the name of your virtual machine.
<shmem name='looking-glass'> <model type='ivshmem-plain'/> <size unit='M'>32</size> </shmem>
You will need to adjust the memory size to a value that is suitable for your desired maximum resolution using the following formula:
width x height x 4 x 2 = total bytes total bytes / 1024 / 1024 = total megabytes + 2
For example, for a resolution of 1920x1080 (1080p)
1920 x 1080 x 4 x 2 = 16,588,800 bytes 16,588,800 / 1024 / 1024 = 15.82 MB + 2 = 17.82
You must round this value up to the nearest power of two, which with the above example would be 32MB
It is suggested that you create the shared memory file before starting the VM with the appropriate permissions for your system, this only needs to be done once at boot time, for example (this is a sample script only, do not use this without altering it for your requirements):
touch /dev/shm/looking-glass && chown user:kvm /dev/shm/looking-glass && chmod 660 /dev/shm/looking-glass
