[UI] Add WoW64 toggle on Linux non-native games (#4831)

Author: Vidi0

public/locales/en/translation.json

@@ -393,7 +393,8 @@
             "part2": "For other places, use a symbolic link to one of these folders"
         },
         "wine-hdr": "HDR enhances colors by providing brighter highlights and deeper contrasts. For HDR to work, both the display and the game must support it.",
-        "wine-wayland": "The Wine-Wayland experimental driver allows games to run natively under the Wayland display protocol. Enabling might break some games."
+        "wine-wayland": "The Wine-Wayland experimental driver allows games to run natively under the Wayland display protocol. Enabling might break some games.",
+        "WoW64": "The Wine WoW64 mode allows 32-bit Windows games to be run on 64-bit Wine. Enabling may improve performance, but could also break older 32-bit games."
     },
     "info": {
         "heroic": {
@@ -803,7 +804,8 @@
         "winecrossoverbottle": "CrossOver Bottle",
         "wineprefix": "WinePrefix folder",
         "wineversion": "Wine Version",
-        "wineWayland": "Enable Wine-Wayland (Experimental) (Wine version needs to support it)"
+        "wineWayland": "Enable Wine-Wayland (Experimental) (Wine version needs to support it)",
+        "WoW64": "Enable WoW64 (Experimental)"
     },
     "settings": {
         "advanced": {

src/backend/config.ts

@@ -352,6 +352,7 @@ class GlobalConfigV0 extends GlobalConfig {
       enableMsync: isMac,
       enableWineWayland: false,
       enableHDR: false,
+      enableWoW64: false,
       eacRuntime: isLinux,
       battlEyeRuntime: isLinux,
       framelessWindow: false,

src/backend/game_config.ts

@@ -216,6 +216,7 @@ class GameConfigV0 extends GameConfig {
       enableFsync,
       enableWineWayland,
       enableHDR,
+      enableWoW64,
       maxSharpness,
       launcherArgs,
       nvidiaPrime,
@@ -254,6 +255,7 @@ class GameConfigV0 extends GameConfig {
       enableFsync,
       enableWineWayland,
       enableHDR,
+      enableWoW64,
       maxSharpness,
       launcherArgs,
       nvidiaPrime,

src/backend/launcher.ts

@@ -373,6 +373,7 @@ function filterGameSettingsForLog(
       delete gameSettings.enableFSR
       delete gameSettings.enableWineWayland
       delete gameSettings.enableHDR
+      delete gameSettings.enableWoW64
       delete gameSettings.showFps
       delete gameSettings.enableDXVKFpsLimit
       delete gameSettings.eacRuntime
@@ -391,6 +392,7 @@ function filterGameSettingsForLog(
     delete gameSettings.enableFSR
     delete gameSettings.enableWineWayland
     delete gameSettings.enableHDR
+    delete gameSettings.enableWoW64
     delete gameSettings.showMangohud
     delete gameSettings.disableUMU
     delete gameSettings.useSteamRuntime
@@ -434,6 +436,7 @@ function filterGameSettingsForLog(
     delete gameSettings.enableFsync
     delete gameSettings.enableWineWayland
     delete gameSettings.enableHDR
+    delete gameSettings.enableWoW64
     delete gameSettings.enableDXVKFpsLimit
     delete gameSettings.DXVKFpsCap
     delete gameSettings.autoInstallDxvk
@@ -1182,6 +1185,13 @@ function setupWineEnvVars(gameSettings: GameSettings, gameId = '0') {
       }
     }
   }
+  if (isLinux && gameSettings.enableWoW64) {
+    if (wineVersion.type === 'proton') {
+      ret.PROTON_USE_WOW64 = '1'
+    } else {
+      ret.WINEARCH = 'wow64'
+    }
+  }
   if (wineVersion.type === 'proton') {
     if (gameSettings.autoInstallDxvkNvapi) {
       ret.PROTON_ENABLE_NVAPI = '1'

src/common/types.ts

@@ -202,6 +202,7 @@ export interface GameSettings {
   enableFsync: boolean
   enableWineWayland: boolean
   enableHDR: boolean
+  enableWoW64: boolean
   gamescope: GameScopeSettings
   enviromentOptions: EnviromentVariable[]
   ignoreGameUpdates: boolean

src/frontend/screens/Settings/components/EnableWoW64.tsx

@@ -0,0 +1,41 @@
+import { useContext } from 'react'
+import { useTranslation } from 'react-i18next'
+import { ToggleSwitch } from 'frontend/components/UI'
+import useSetting from 'frontend/hooks/useSetting'
+import ContextProvider from 'frontend/state/ContextProvider'
+import SettingsContext from '../SettingsContext'
+import InfoIcon from 'frontend/components/UI/InfoIcon'
+
+const EnableWoW64 = () => {
+  const { t } = useTranslation()
+  const { platform } = useContext(ContextProvider)
+  const { isLinuxNative } = useContext(SettingsContext)
+  const isLinux = platform === 'linux'
+  const [enableWoW64, setEnableWoW64] = useSetting('enableWoW64', false)
+
+  if (!isLinux || isLinuxNative) {
+    return <></>
+  }
+
+  return (
+    <>
+      <div className="toggleRow">
+        <ToggleSwitch
+          htmlId="WoW64Toggle"
+          value={enableWoW64 || false}
+          handleChange={() => setEnableWoW64(!enableWoW64)}
+          title={t('setting.WoW64', 'Enable WoW64 (Experimental)')}
+        />
+
+        <InfoIcon
+          text={t(
+            'help.WoW64',
+            'The Wine WoW64 mode allows 32-bit Windows games to be run on 64-bit Wine. Enabling may improve performance, but could also break older 32-bit games.'
+          )}
+        />
+      </div>
+    </>
+  )
+}
+
+export default EnableWoW64

src/frontend/screens/Settings/components/index.ts

@@ -28,6 +28,7 @@ export { default as EnableFSR } from './EnableFSR'
 export { default as EnableMsync } from './EnableMsync'
 export { default as EnableFsync } from './EnableFsync'
 export { default as EnableWineWayland } from './EnableWineWayland'
+export { default as EnableWoW64 } from './EnableWoW64'
 export { default as Gamescope } from './Gamescope'
 export { default as EnvVariablesTable } from './EnvVariablesTable'
 export { default as ExperimentalFeatures } from './ExperimentalFeatures'

src/frontend/screens/Settings/sections/GamesSettings/index.tsx

@@ -17,6 +17,7 @@ import {
   EnableFsync,
   EnableMsync,
   EnableWineWayland,
+  EnableWoW64,
   EnvVariablesTable,
   GameMode,
   LauncherArgs,
@@ -189,6 +190,7 @@ export default function GamesSettings() {
             <EnableEsync />
             <EnableFsync />
             <EnableWineWayland />
+            <EnableWoW64 />
             <EnableMsync />
             <AdvertiseAvxForRosetta />
             <EnableFSR />