From f309d4881acaaf539bd572a933c55369220b0cb6 Mon Sep 17 00:00:00 2001
From: David Griswold <novachild@gmail.com>
Date: Thu, 11 Sep 2025 22:24:33 +0300
Subject: [PATCH] android: Add Display Listener methods for smoother secondary
 display updates

---
 .../citra/citra_emu/display/SecondaryDisplay.kt   | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

diff --git a/src/android/app/src/main/java/org/citra/citra_emu/display/SecondaryDisplay.kt b/src/android/app/src/main/java/org/citra/citra_emu/display/SecondaryDisplay.kt
index e0594a7e5..b44929c9d 100644
--- a/src/android/app/src/main/java/org/citra/citra_emu/display/SecondaryDisplay.kt
+++ b/src/android/app/src/main/java/org/citra/citra_emu/display/SecondaryDisplay.kt
@@ -20,7 +20,7 @@ import org.citra.citra_emu.features.settings.model.IntSetting
 import org.citra.citra_emu.display.SecondaryDisplayLayout
 import org.citra.citra_emu.NativeLibrary
 
-class SecondaryDisplay(val context: Context) {
+class SecondaryDisplay(val context: Context) : DisplayManager.DisplayListener {
     private var pres: SecondaryDisplayPresentation? = null
     private val displayManager = context.getSystemService(Context.DISPLAY_SERVICE) as DisplayManager
     private val vd: VirtualDisplay
@@ -34,6 +34,7 @@ class SecondaryDisplay(val context: Context) {
             null,
             DisplayManager.VIRTUAL_DISPLAY_FLAG_PRESENTATION
         )
+        displayManager.registerDisplayListener(this, null)
     }
 
     fun updateSurface() {
@@ -74,8 +75,20 @@ class SecondaryDisplay(val context: Context) {
     }
 
     fun releaseVD() {
+        displayManager.unregisterDisplayListener(this)
         vd.release()
     }
+
+    override fun onDisplayAdded(displayId: Int) {
+        updateDisplay()
+    }
+
+    override fun onDisplayRemoved(displayId: Int) {
+        updateDisplay()
+    }
+    override fun onDisplayChanged(displayId: Int) {
+        updateDisplay()
+    }
 }
 class SecondaryDisplayPresentation(
     context: Context, display: Display, val parent: SecondaryDisplay