From 6060e57d4369130fe9594751798f4a78893bb4c6 Mon Sep 17 00:00:00 2001
From: Deve <deveee@gmail.com>
Date: Wed, 6 Feb 2019 21:42:16 +0100
Subject: [PATCH] Sleep some time after changing resolution, so that window
 manager will be notified before we read window size

---
 lib/irrlicht/source/Irrlicht/CIrrDeviceLinux.cpp | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/lib/irrlicht/source/Irrlicht/CIrrDeviceLinux.cpp b/lib/irrlicht/source/Irrlicht/CIrrDeviceLinux.cpp
index 80fe43883..6cef27149 100644
--- a/lib/irrlicht/source/Irrlicht/CIrrDeviceLinux.cpp
+++ b/lib/irrlicht/source/Irrlicht/CIrrDeviceLinux.cpp
@@ -325,6 +325,11 @@ bool CIrrDeviceLinux::changeResolution()
 		return true;
 
 	getVideoModeList();
+	
+	core::dimension2d<u32> desktop_res = VideoModeList.getDesktopResolution();
+	
+	if (desktop_res.Width == Width && desktop_res.Height == Height)
+		return true;
 
 	#if defined(_IRR_LINUX_X11_VIDMODE_) || defined(_IRR_LINUX_X11_RANDR_)
 	s32 eventbase, errorbase;
@@ -480,7 +485,11 @@ bool CIrrDeviceLinux::changeResolution()
 									crtc->rotation, &output_id, 1);
 		
 		if (s == Success)
+		{
 			UseXRandR = true;
+			XSync(display, false);
+			sleep(1000, false);
+		}
 			
 		if (UseXRandR && SupportsNetWM)
 		{
@@ -1141,6 +1150,9 @@ bool CIrrDeviceLinux::createWindow()
 			{
 				grabPointer(true);
 			}
+			
+			XSync(display, false);
+			sleep(100, false);
 		}
 			
 		if (!SupportsNetWM && CreationParams.Fullscreen)