From 9cf0e21fb03cb415b524613fc2ec6245b03f3400 Mon Sep 17 00:00:00 2001
From: FakeMichau <49685661+FakeMichau@users.noreply.github.com>
Date: Tue, 18 Aug 2026 01:55:09 +0200
Subject: [PATCH] Try to avoid having no nvngx replacement selected when the
 GPU doesn't support DLSSG

---
 OptiScaler/menu/menu_common.cpp | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/OptiScaler/menu/menu_common.cpp b/OptiScaler/menu/menu_common.cpp
index c844f8a9..0f61a67e 100644
--- a/OptiScaler/menu/menu_common.cpp
+++ b/OptiScaler/menu/menu_common.cpp
@@ -3197,6 +3197,20 @@ void MenuCommon::RenderFrameGenerationSelection(RenderMenuContext& ctx)
             ShowTooltip("What backend to use instead of the real DLSSG");
         }
 
+        // Try to avoid having None selected when the gpu doesn't support DLSSG + some fallbacks
+        if (!supportsDlssg && (replaceFgOutputWithNvngx || showNvngxFgDowndown) &&
+            config->FGNvngxReplacement.value_or_default() == FGNvngxReplacement::None)
+        {
+            if (state.nukemsFgFileAvailable)
+                config->FGNvngxReplacement.set_volatile_value(FGNvngxReplacement::Nukems);
+
+            else if (state.artursFgFileAvailable)
+                config->FGNvngxReplacement.set_volatile_value(FGNvngxReplacement::Arturs);
+
+            else if (FfxApiProxy::IsFGReady(false))
+                config->FGNvngxReplacement.set_volatile_value(FGNvngxReplacement::FFX);
+        }
+
         const bool nvngxFgChanged = (replaceFgOutputWithNvngx || showNvngxFgDowndown) &&
                                     state.activeFgNvngx != config->FGNvngxReplacement.value_or_default();
         state.fgSettingsChanged = state.activeFgOutput != config->FGOutput.value_or_default() ||