From ebeb9d028e86cd09ad32b90a8c50cfd577af1a6c Mon Sep 17 00:00:00 2001
From: Quantum <quantum2048@gmail.com>
Date: Wed, 3 Jun 2026 00:47:40 -0400
Subject: [PATCH] [idd] helper/registry: load and store no GPU preference

---
 idd/LGIddHelper/CRegistrySettings.cpp | 25 ++++++++++++++++++++++++-
 idd/LGIddHelper/CRegistrySettings.h   |  3 +++
 2 files changed, 27 insertions(+), 1 deletion(-)

diff --git a/idd/LGIddHelper/CRegistrySettings.cpp b/idd/LGIddHelper/CRegistrySettings.cpp
index 8e38ed4d..0742bf08 100644
--- a/idd/LGIddHelper/CRegistrySettings.cpp
+++ b/idd/LGIddHelper/CRegistrySettings.cpp
@@ -171,7 +171,7 @@ std::optional<DWORD> CRegistrySettings::getDefaultRefresh()
   case ERROR_FILE_NOT_FOUND:
     return DEFAULT_REFRESH;
   default:
-    DEBUG_ERROR_HR(status, "RegGetValue(Modes) length computation");
+    DEBUG_ERROR_HR(status, "RegGetValue(Modes)");
     return {};
   }
 }
@@ -180,3 +180,26 @@ LSTATUS CRegistrySettings::setDefaultRefresh(DWORD refresh)
 {
   return RegSetValueEx(hKey, L"DefaultRefresh", 0, REG_DWORD, (LPBYTE) &refresh, sizeof(DWORD));
 }
+
+std::optional<bool> CRegistrySettings::getNoGPU()
+{
+  DWORD result, cbData = sizeof result;
+
+  LSTATUS status = RegGetValue(hKey, nullptr, L"NoGPU", RRF_RT_REG_DWORD, nullptr, &result, &cbData);
+  switch (status)
+  {
+  case ERROR_SUCCESS:
+    return !!result;
+  case ERROR_FILE_NOT_FOUND:
+    return false;
+  default:
+    DEBUG_ERROR_HR(status, "RegGetValue(NoGPU)");
+    return {};
+  }
+}
+
+LSTATUS CRegistrySettings::setNoGPU(bool noGPU)
+{
+  DWORD dwValue = noGPU;
+  return RegSetValueEx(hKey, L"NoGPU", 0, REG_DWORD, (LPBYTE)&dwValue, sizeof(DWORD));
+}
diff --git a/idd/LGIddHelper/CRegistrySettings.h b/idd/LGIddHelper/CRegistrySettings.h
index 83af6a50..ee3e1504 100644
--- a/idd/LGIddHelper/CRegistrySettings.h
+++ b/idd/LGIddHelper/CRegistrySettings.h
@@ -49,4 +49,7 @@ public:
 
   std::optional<DWORD> getDefaultRefresh();
   LSTATUS setDefaultRefresh(DWORD refresh);
+
+  std::optional<bool> getNoGPU();
+  LSTATUS setNoGPU(bool noGPU);
 };