nvidia-vaapi-driver/debian/env-scripts/nvidia-vaapi-env.sh

#! /bin/bash

# Check system for NVIDIA card and set vaapi env vars

nvkernmod=$(lspci -nnkk | grep -A3 '\[03' | grep 'Kernel modules:' | grep -i nvidia)

if [[ ! -z $nvkernmod ]]
then
    if switcherooctl list | awk 'ORS = $1 ~/Name/ ? " " : "\n"' | grep Default | grep yes | grep -E -i 'intel|amd|radeon|advanced' > /dev/null 2>&1
    then
        export MOZ_DISABLE_RDD_SANDBOX=1
        export NVD_BACKEND=direct
        export EGL_PLATFORM=$XDG_SESSION_TYPE
    else
        export LIBVA_DRIVER_NAME=nvidia
        export MOZ_DISABLE_RDD_SANDBOX=1
        export NVD_BACKEND=direct
        export EGL_PLATFORM=$XDG_SESSION_TYPE
    fi 
fi