From a79b93f5bcf7bd76309a4234370d84d5665059d9 Mon Sep 17 00:00:00 2001
From: Camilla Berglund <elmindreda@elmindreda.org>
Date: Thu, 14 Nov 2013 12:59:08 +0100
Subject: [PATCH] Avoid X11 video mode setting if modes match.

This matches the behavior of the Windows port.
---
 src/x11_monitor.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/x11_monitor.c b/src/x11_monitor.c
index de3287cd..48d47b4a 100644
--- a/src/x11_monitor.c
+++ b/src/x11_monitor.c
@@ -111,6 +111,9 @@ void _glfwSetVideoMode(_GLFWmonitor* monitor, const GLFWvidmode* desired)
             }
         }
 
+        if (bestMode == ci->mode)
+            return;
+
         if (monitor->x11.oldMode == None)
             monitor->x11.oldMode = ci->mode;