From 136b5b30c596ed1374226e464203da448bd02782 Mon Sep 17 00:00:00 2001
From: FunkyFr3sh <cc.red.alert.1@googlemail.com>
Date: Sat, 24 Aug 2024 14:50:03 +0200
Subject: [PATCH] add new IsSteamDeck function to versionhelpers

---
 inc/versionhelpers.h | 4 ++++
 src/dd.c             | 2 +-
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/inc/versionhelpers.h b/inc/versionhelpers.h
index 0746d39..e8359ae 100644
--- a/inc/versionhelpers.h
+++ b/inc/versionhelpers.h
@@ -228,4 +228,8 @@ VERSIONHELPERAPI IsAndroid(void) {
     return release && strstr(release, "android") != NULL;
 }
 
+VERSIONHELPERAPI IsSteamDeck(void) {
+    return IsWine() && !GetEnvironmentVariable("STEAMDECK", NULL, 0);
+}
+
 #endif
diff --git a/src/dd.c b/src/dd.c
index 080bbea..a875f92 100644
--- a/src/dd.c
+++ b/src/dd.c
@@ -1163,7 +1163,7 @@ HRESULT dd_SetDisplayMode(DWORD dwWidth, DWORD dwHeight, DWORD dwBPP, DWORD dwFl
                 Fix wayland bug: 
                 ChangeDisplaySettings fails silently - enable borderless mode in case display resolution was not changed 
             */
-            if (IsWine() && !GetEnvironmentVariable("STEAMDECK", NULL, 0) &&
+            if (IsWine() && !IsSteamDeck() &&
                 (g_ddraw.render.mode.dmPelsWidth != real_GetSystemMetrics(SM_CXSCREEN) || 
                     g_ddraw.render.mode.dmPelsHeight != real_GetSystemMetrics(SM_CYSCREEN)))
             {