From 48c773574a2b568b611490c421133a536f5b1521 Mon Sep 17 00:00:00 2001
From: PancakeTAS <pancake@mgnet.work>
Date: Sun, 6 Jul 2025 16:54:00 +0200
Subject: [PATCH] enhancement: better default path logic

fixes #16
---
 lsfg-vk-gen/src/lsfg.cpp | 17 ++++++++++++++++-
 1 file changed, 16 insertions(+), 1 deletion(-)

diff --git a/lsfg-vk-gen/src/lsfg.cpp b/lsfg-vk-gen/src/lsfg.cpp
index 5f39ea4..f75286d 100644
--- a/lsfg-vk-gen/src/lsfg.cpp
+++ b/lsfg-vk-gen/src/lsfg.cpp
@@ -25,7 +25,22 @@ void LSFG::initialize() {
         return;
 
     char* dllPath = getenv("LSFG_DLL_PATH");
-    const std::string dllPathStr = dllPath ? std::string(dllPath) : "Lossless.dll";
+    std::string dllPathStr;
+    if (dllPath && *dllPath != '\0') {
+        dllPathStr = std::string(dllPath);
+    } else {
+        std::string baseDirStr;
+
+        const char* baseDir = getenv("XDG_DATA_HOME");
+        if (!baseDir || *baseDir == '\0')
+            baseDir = getenv("HOME");
+        if (!baseDir || *baseDir == '\0')
+            baseDir = "";
+        baseDirStr = std::string(baseDir);
+
+        dllPathStr = baseDirStr +
+            "/.local/share/Steam/steamapps/common/Lossless Scaling/Lossless.dll";
+    }
 
     instance.emplace();
     device.emplace(*instance);