From 44b5b20a9067afb7dfd25777590e32fabbb456ad Mon Sep 17 00:00:00 2001
From: GaryOderNichts <12049776+GaryOderNichts@users.noreply.github.com>
Date: Wed, 23 Jul 2025 19:50:56 +0200
Subject: [PATCH] wiiu/render: Avoid calling `GX2SetSwapInterval` in background

---
 src/render/wiiu/SDL_rpresent_wiiu.c | 16 ++++++++++++++--
 1 file changed, 14 insertions(+), 2 deletions(-)

diff --git a/src/render/wiiu/SDL_rpresent_wiiu.c b/src/render/wiiu/SDL_rpresent_wiiu.c
index c0ac7a1cc5b8a..de69b8f860f23 100644
--- a/src/render/wiiu/SDL_rpresent_wiiu.c
+++ b/src/render/wiiu/SDL_rpresent_wiiu.c
@@ -38,9 +38,21 @@ static SDL_bool tvDrcEnabled = SDL_FALSE;
 
 int WIIU_SDL_SetVSync(SDL_Renderer * renderer, const int vsync)
 {
-    GX2SetSwapInterval(vsync ? 1 : 0);
+    WIIU_VideoData *videodata = (WIIU_VideoData *) SDL_GetVideoDevice()->driverdata;
+    uint32_t swapInterval = vsync ? 1 : 0;
 
-    if (GX2GetSwapInterval() > 0) {
+    // Don't attempt to update swap interval if in background
+    if (!videodata->hasForeground) {
+        return 0;
+    }
+
+    if (GX2GetSwapInterval() == swapInterval) {
+        return 0;
+    }
+
+    GX2SetSwapInterval(swapInterval);
+
+    if (swapInterval > 0) {
         renderer->info.flags |= SDL_RENDERER_PRESENTVSYNC;
     } else {
         renderer->info.flags &= ~SDL_RENDERER_PRESENTVSYNC;