From 5b750fd48c7a2f0cb8c917fb78ccca584694c529 Mon Sep 17 00:00:00 2001
From: "Ryan C. Gordon" <icculus@icculus.org>
Date: Fri, 5 Jul 2013 01:18:18 -0400
Subject: [PATCH] Don't set the same GL context twice on Mac OS X (thanks,
 Alex!).

Fixes Bugzilla #1939.
---
 src/video/cocoa/SDL_cocoaopengl.m | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/video/cocoa/SDL_cocoaopengl.m b/src/video/cocoa/SDL_cocoaopengl.m
index f52e3e91e..589fb1dd7 100644
--- a/src/video/cocoa/SDL_cocoaopengl.m
+++ b/src/video/cocoa/SDL_cocoaopengl.m
@@ -223,7 +223,7 @@
             [nscontext setFullScreen];
         } else
 #endif
-        {
+        if ([nscontext view] != [windowdata->nswindow contentView]) {
             [nscontext setView:[windowdata->nswindow contentView]];
             [nscontext update];
         }