#!/bin/bash

clear
vkgpu="$(inxi -G | grep -Pio 'Beema|Bonaire|Emerald|Grenada|Hawaii|Kalindi|Liverpool|Neo|Saturn|Scorpio|Spectre|Strato|Tobago|Vesuvius|Banks|Cape Verde|Chelsea|Curacao|Durango|Exo|Hainan|Heathrow|Jet|Kryptos|Litho|Malta|Mars|Neptune|New Zealand|Oland|Opal|Pitcairn|Sun|Tahiti|Trinidad|Tropo|Venus|Wimbledon')"
# OpenGL renderer codename, match against all known Sea/Southern Islands
if [[ -z "$vkgpu" ]]; then
  echo "No Sea/Southern Islands chipset on this sysytem."
else
  vkdrv="$(lspci -k | grep -EA3 'VGA|3D|Display')"
  # current and available drivers
  vkuse="$(echo "$vkdrv" | grep -Pio 'driver.*')"
  # driver in use
  vkavl="$(echo "$vkdrv" | grep -Pio 'modules.*')"
  # available drivers
  if [[ -n "$(echo "$vkuse" | grep -Pio 'amdgpu')" ]]; then
  # amdgpu in use
    echo "Vulkan enabled on amdgpu, codename $vkgpu."
  elif [[ -z "$(echo "$vkavl" | grep -Pio 'amdgpu')" ]]; then
  # amdgpu unavailable
    echo "Vulkan amdgpu driver unavailable."
  else
  # amdgpu available but not in use
    if [[ -n "$(echo "$vkgpu" | grep -Pio 'Beema|Bonaire|Emerald|Grenada|Hawaii|Kalindi|Liverpool|Neo|Saturn|Scorpio|Spectre|Strato|Tobago|Vesuvius')" ]]; then
    # promote amdgpu for Sea Islands
      echo -e "  Vulkan not enabled on Sea Islands (SI) GCN 1.1 \n  codename $vkgpu, enabling...\n\e[1m\e[32m/etc/modprobe.d/amdgpu.conf\e[0m"
      echo -e 'options amdgpu si_support=0\noptions amdgpu cik_support=1\noptions radeon si_support=0\noptions radeon cik_support=0' | sudo tee /etc/modprobe.d/amdgpu.conf
      echo -e "  \e[31mTo revert changes, delete /etc/modprobe.d/amdgpu.conf\n  \e[0mReboot your computer for the changes to take effect."
    else
    # promote amdgpu for Southern Islands
      echo -e "  Vulkan not enabled on Southern Islands (CIK) GCN 1.0 \n  codename $vkgpu, enabling...\n\e[1m\e[32m/etc/modprobe.d/amdgpu.conf\e[0m"
      echo -e 'options amdgpu si_support=1\noptions amdgpu cik_support=0\noptions radeon si_support=0\noptions radeon cik_support=0' | sudo tee /etc/modprobe.d/amdgpu.conf
      echo -e "  \e[31mTo revert changes, delete /etc/modprobe.d/amdgpu.conf\n  \e[0mReboot your computer for the changes to take effect."
    fi
  fi
fi