Recently I cam acroos interesting article [Serious Sam 4 Linux DXVK Wine](https://software.kaminata.net/linux-wine-games/serious-sam-4-linux-dxvk-wine/)

I found out that this article is outdated + additionally I wanted to setup Serious Sam on PlayOnLinux (not Lutris).

# Here is my steps.

## 1 (Optional) Change default PlayOnLinux location
First of all Serious Sam 4 requires `42 GB` of storage. This is too much for my system folder.
However I have additional mounted disk/folder.
The problem is that PlayOnLinux by default store its "bottles" in the home path (different virtual wine folders), e.g. `~/.PlayOnLinux`.
I changed default location by this guide [How to move PlayOnLinux virtual drives to another disk](https://wiki.playonlinux.com/index.php/How_to_move_PlayOnLinux_virtual_drives_to_another_disk).
- close PlayOnLinux
- create `.PlayOnLinux` folder on mounted disk. E.g. `mkdir /mnt/mystorage/Install/.PlayOnLinux/`
- copy default `.PlayOnLinux` folder into new created. E.g. `cp -av ~/.PlayOnLinux/ /mnt/mystorage/Install/.PlayOnLinux/`
- clean default `.PlayOnLinux` folder `rm -rf ~/.PlayOnLinux`
- make a symlink from default `.PlayOnLinux` folder into new one. E.g. `ln -s /mnt/mystorage/Install/.PlayOnLinux ~/.PlayOnLinux`

## 2 Obtain [Serious Sam 4](https://www.gog.com/game/serious_sam_4_deluxe_edition)
As a result you should have following:
```shell
├── Bonus
│   ├── serious_sam_4_artbook.zip
│   ├── serious_sam_4_ost_aac.zip
│   ├── serious_sam_4_ost_flac.zip
│   ├── serious_sam_4_ost_ogg.zip
│   └── serious_sam_4_ost_wav.zip
├── DLC
│   └── setup_serious_sam_4_deluxe_edition_dlc_1.08_(64bit)_(45801).exe
├── setup_serious_sam_4_1.08_(64bit)_(45801)-10.bin
├── setup_serious_sam_4_1.08_(64bit)_(45801)-11.bin
├── setup_serious_sam_4_1.08_(64bit)_(45801)-1.bin
├── setup_serious_sam_4_1.08_(64bit)_(45801)-2.bin
├── setup_serious_sam_4_1.08_(64bit)_(45801)-3.bin
├── setup_serious_sam_4_1.08_(64bit)_(45801)-4.bin
├── setup_serious_sam_4_1.08_(64bit)_(45801)-5.bin
├── setup_serious_sam_4_1.08_(64bit)_(45801)-6.bin
├── setup_serious_sam_4_1.08_(64bit)_(45801)-7.bin
├── setup_serious_sam_4_1.08_(64bit)_(45801)-8.bin
├── setup_serious_sam_4_1.08_(64bit)_(45801)-9.bin
└── setup_serious_sam_4_1.08_(64bit)_(45801).exe
```

## 3 Prepare PlayOnLinux "bottle"
- Run PlayOnLinux
- Go to `Tools` -> `Manage Wine versions`
- Select `Wine versions (amd64)` tab
- Install at leat one x64 wine version, e.g. `6.17-staging`
- Close `Manage Wine versions` window
- Go to `Configure` -> `New` for adding bottle (virtual drive)
- `Next` -> `64 bits windows installation` -> Select some Winex64 version e.g. `6.17-staging`
- Enter name of the `bottle`, e.g. `x64v6.17staging`
- After `bottle` was created -> select this `bottle` on the left and `Install components` tab on the right
- Install `d3dcompiler_47` and `DXVK`
- Select `Miscellaneous` tab on the right and click `Run a .exe file in this virtual drive` and install Serios Sam 4 by selecting `setup_serious_sam_4_1.08_(64bit)_(45801).exe`
- Close PlayOnLinux for now

## 4 Adjust Serious Sam configs
Game by default tries to use Vulkan API, which is buggy and even can not start the game.
- In order to start the game go to game folder, e.g. `cd /mnt/mystorage/Install/.PlayOnLinux/wineprefix/x64v6.17staging/drive_c/GOG Games/Serious Sam 4/`
- Open `UserCfg.lua` with any text editor and add following lines at the end of the file:
```
gfx_strAPI = "Direct3D11";
sfx_strAPI = "OpenAL";
```
- Save and close `UserCfg.lua`
- Go to `Content/SeriousSam4/Config/`
- Open `CheckDriver.lua` with text editor and replace with the following:
```
local aSettings = {
  { cvar="sys_iGPUVendorID" },
  { cvar="sys_strPlatform" },
  { cvar="gfx_iReqDriverVersion" },
  { cvar="gfx_iAPI" },
}

-- vendor IDs

local VID_NVIDIA = 0x10DE;
local VID_ATI = 0x1002;
local VID_INTEL = 0x8086;

-- assume no driver version detection
gfx_strAPI = "Direct3D11";

-- if vendor is nVidia
if sys_iGPUVendorID==VID_NVIDIA then

  -- set needed driver version (September 2020)
gfx_strAPI = "Direct3D11";
  
-- if vendor is ATI
elseif sys_iGPUVendorID==VID_ATI then

  -- set needed driver version (September 2020)
gfx_strAPI = "Direct3D11";

-- if vendor is ATI
elseif sys_iGPUVendorID==VID_INTEL then

  -- set needed driver version (September 2020)
gfx_strAPI = "Direct3D11";
  
-- for any other vendor
else

  -- just report a warning
  print( "Unable to check for correct version of display driver!");
 
end
```
- Save and close `CheckDriver.lua`

## 5 Download lates [Proton GE](https://github.com/GloriousEggroll/proton-ge-custom/releases) archive
e.g. `Proton-7.2-GE-2 Released`
- Extract `Proton-7.2-GE-2.tar.gz` archive
- Create folder in `.PlayOnLinux/wine/linux-amd64/` e.g. `Proton7.1GE2`
- Copy `bin, lib, lib64, share` folders from `Proton-7.2-GE-2.tar.gz` archive (`files` subfolder) into newly created folder, e.g. `cp -av /home/lex/Downloads/Proton-7.1-GE-2/files/ /mnt/mystorage/Install/.PlayOnLinux/wine/linux-amd64/Proton7.1GE2/`

## 6 Start the game
- Run PlayOnLinux
- Go to `Configure` -> select your bottle e.g. `x64v6.17staging`
- Open `General` tab on the right and on the line `Wine version` you should seelct `Proton7.1GE2` (the folder that you created earlier and PlayOnLinux should detect wine inside this folder)
- Click `Make a new shortcut from this virtual drive` and select `Sam4.exe` and `Next`
- Close `PlayOnLinux configuration` window and run Sam4!