fix: set gpu preference to high performance on windows by default

desktop/src-tauri/src/gpu_preference.rs

@@ -0,0 +1,27 @@
+use eyre::ContextCompat;
+use eyre::Result;
+use std::env;
+use winreg::enums::*;
+use winreg::RegKey;
+
+pub fn set_gpu_preference() -> Result<()> {
+    let hkcu = RegKey::predef(HKEY_CURRENT_USER);
+    let directx = hkcu.open_subkey_with_flags("Software\\Microsoft\\DirectX", KEY_ALL_ACCESS)?;
+
+    // Create the main key for the UserGpuPreferences if it doesn't exist
+    let user_gpu_preferences = directx.create_subkey("UserGpuPreferences")?;
+
+    // Get the current executable path
+    let program_path = env::current_exe()?;
+    let program_path_str = program_path.to_str().context("Failed to convert program path to string")?;
+
+    // Set the GPU preference for the current executable
+    // 0 = Auto ; 1 = Power Saving ; 2 = High
+    user_gpu_preferences.0.set_value(program_path_str, &"GpuPreference=2;")?;
+
+    log::debug!(
+        "GPU preference set for high performance successfully for the current executable ({}).",
+        program_path_str
+    );
+    Ok(())
+}

desktop/src-tauri/src/main.rs

@@ -16,7 +16,10 @@ mod dock;
 mod x86_features;
 
 #[cfg(windows)]
-mod register_custom_protocol;
+mod custom_protocol;
+
+#[cfg(windows)]
+mod gpu_preference;
 
 use tauri_plugin_window_state::StateFlags;
 

desktop/src-tauri/src/setup.rs

@@ -22,7 +22,10 @@ pub fn setup(app: &App) -> Result<(), Box<dyn std::error::Error>> {
 
     #[cfg(windows)]
     {
-        if let Err(error) = crate::register_custom_protocol::register() {
+        if let Err(error) = crate::custom_protocol::register() {
+            log::error!("{:?}", error);
+        }
+        if let Err(error) = crate::gpu_preference::set_gpu_preference() {
             log::error!("{:?}", error);
         }
     }