fix: default to gpu rendering with optional user config override

client/src/commonMain/kotlin/com/zaneschepke/wireguardautotunnel/client/di/serviceModule.kt

@@ -109,7 +109,7 @@ val serviceModule = module {
     }
     single<DaemonService> { UdsDaemonService(get(), get(), get()) }
     single<TunnelService> { UdsTunnelService(get(), tunnelRepository = get()) }
-    single<BackendService> { UdsBackendService(get(), get(), get(), get(), get()) }
+    single<BackendService> { UdsBackendService(get(), get(), get(), get()) }
 
     single<TunnelImportService> { DefaultTunnelImportService(get()) }
 }

composeApp/src/jvmMain/kotlin/com/zaneschepke/wireguardautotunnel/desktop/Main.kt

@@ -22,6 +22,7 @@ import androidx.compose.ui.unit.dp
 import androidx.compose.ui.unit.sp
 import androidx.compose.ui.window.application
 import androidx.compose.ui.window.rememberWindowState
+import co.touchlab.kermit.Logger
 import com.dokar.sonner.ToastType
 import com.dokar.sonner.Toaster
 import com.dokar.sonner.rememberToasterState
@@ -44,6 +45,8 @@ import com.zaneschepke.wireguardautotunnel.desktop.ui.screens.tunnels.components
 import com.zaneschepke.wireguardautotunnel.desktop.ui.state.TrayBadgeState
 import com.zaneschepke.wireguardautotunnel.desktop.ui.theme.ErrorRed
 import com.zaneschepke.wireguardautotunnel.desktop.ui.theme.WGTunnelTheme
+import com.zaneschepke.wireguardautotunnel.desktop.util.FileUtils
+import com.zaneschepke.wireguardautotunnel.desktop.util.RenderingMode
 import com.zaneschepke.wireguardautotunnel.desktop.viewmodel.AppViewModel
 import io.github.kdroidfilter.nucleus.energymanager.EnergyManager
 import io.github.kdroidfilter.nucleus.hidpi.getLinuxNativeScaleFactor
@@ -62,8 +65,17 @@ import org.orbitmvi.orbit.compose.collectAsState
 
 @OptIn(ExperimentalTrayAppApi::class)
 fun main() {
-    System.setProperty("skiko.renderApi", "SOFTWARE_FASTEST")
+    val appConfig = FileUtils.loadAppConfig()
 
+    when (appConfig.renderingMode) {
+        RenderingMode.SOFTWARE -> {
+            System.setProperty("skiko.renderApi", "SOFTWARE_FASTEST")
+            Logger.i { "Running app with SOFTWARE rendering" }
+        }
+        RenderingMode.HARDWARE -> {
+            Logger.i { "Running app with default hardware acceleration" }
+        }
+    }
     // HiDPI detection for Linux
     if (System.getProperty("sun.java2d.uiScale") == null) {
         val scale = getLinuxNativeScaleFactor()

composeApp/src/jvmMain/kotlin/com/zaneschepke/wireguardautotunnel/desktop/util/AppConfig.kt

@@ -0,0 +1,19 @@
+package com.zaneschepke.wireguardautotunnel.desktop.util
+
+import java.util.Properties
+
+data class AppConfig(val renderingMode: RenderingMode = RenderingMode.HARDWARE) {
+
+    companion object {
+        fun fromProperties(props: Properties): AppConfig {
+            val rendering = props.getProperty("rendering", "hardware")
+            return AppConfig(renderingMode = RenderingMode.fromString(rendering))
+        }
+    }
+
+    fun toProperties(): Properties {
+        val props = Properties()
+        props.setProperty("rendering", renderingMode.name.lowercase())
+        return props
+    }
+}

composeApp/src/jvmMain/kotlin/com/zaneschepke/wireguardautotunnel/desktop/util/FileUtils.kt

@@ -1,6 +1,9 @@
 package com.zaneschepke.wireguardautotunnel.desktop.util
 
+import co.touchlab.kermit.Logger
+import com.zaneschepke.wireguardautotunnel.core.helper.FilePathsHelper.getDatabaseDir
 import java.io.*
+import java.util.Properties
 import java.util.zip.ZipEntry
 import java.util.zip.ZipInputStream
 import java.util.zip.ZipOutputStream
@@ -59,7 +62,41 @@ object FileUtils {
         return byteArrayOutputStream.toByteArray()
     }
 
-    fun getNameFromFileName(fileName: String): String {
+    fun getConfigFile(): File {
-        return fileName.substringBeforeLast(".")
+        val configDir = getDatabaseDir()
+        if (!configDir.exists()) configDir.mkdirs()
+        return File(configDir, "config.properties")
+    }
+
+    fun loadAppConfig(): AppConfig {
+        val configFile = getConfigFile()
+
+        if (!configFile.exists()) {
+            createDefaultConfigTemplate(configFile)
+        }
+
+        return try {
+            val props = Properties()
+            configFile.inputStream().use { props.load(it) }
+            AppConfig.fromProperties(props)
+        } catch (_: Exception) {
+            Logger.w { "Could not read config.properties, using defaults" }
+            AppConfig()
+        }
+    }
+
+    private fun createDefaultConfigTemplate(file: File) {
+        file.writeText(
+            """
+            # WireGuard Auto Tunnel - Advanced Configuration
+            # Edit this file and restart the app for changes to apply.
+            #
+            # rendering=hardware      (default, best performance, recommended)
+            # rendering=software      (use only if you have issues rendering the app)
+            #
+            rendering=hardware
+            """
+                .trimIndent()
+        )
     }
 }

composeApp/src/jvmMain/kotlin/com/zaneschepke/wireguardautotunnel/desktop/util/RenderingMode.kt

@@ -0,0 +1,14 @@
+package com.zaneschepke.wireguardautotunnel.desktop.util
+
+enum class RenderingMode {
+    HARDWARE,
+    SOFTWARE;
+
+    companion object {
+        fun fromString(value: String?): RenderingMode =
+            when (value?.trim()?.lowercase()) {
+                "software" -> SOFTWARE
+                else -> HARDWARE
+            }
+    }
+}