From 96cad1ac999b7d6e288a681ce53a23044bc23127 Mon Sep 17 00:00:00 2001
From: krypton <bot@hydroroll.team>
Date: Sat, 4 Apr 2026 21:37:16 +0800
Subject: feat: add NVIDIA Prime environment variables for Linux hybrid
 graphics

- Inject __NV_PRIME_RENDER_OFFLOAD=1 and __GLX_VENDOR_LIBRARY_NAME=nvidia
- Enables discrete GPU usage on Linux systems with hybrid graphics
- Only applies on Linux via #[cfg(target_os = "linux")]
- Closes #154
---
 src-tauri/src/main.rs | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/src-tauri/src/main.rs b/src-tauri/src/main.rs
index 7f7c4c0..5109182 100644
--- a/src-tauri/src/main.rs
+++ b/src-tauri/src/main.rs
@@ -862,6 +862,22 @@ async fn start_game(
         );
     }
 
+    // On Linux, inject GPU environment variables for hybrid graphics support
+    #[cfg(target_os = "linux")]
+    {
+        // NVIDIA Prime Render Offload - enables discrete NVIDIA GPU on hybrid systems
+        command.env("__NV_PRIME_RENDER_OFFLOAD", "1");
+        command.env("__GLX_VENDOR_LIBRARY_NAME", "nvidia");
+        
+        // AMD DRI_PRIME - enables discrete AMD GPU on hybrid systems
+        command.env("DRI_PRIME", "1");
+        
+        emit_log!(
+            window,
+            "Injected GPU environment variables for Linux (NVIDIA Prime & AMD DRI_PRIME)".to_string()
+        );
+    }
+
     // Spawn and handle output
     let mut child = command
         .spawn()
-- 
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