darwin: Specify +extension GLX when the user requests IGLX support

Fixes: https://github.com/XQuartz/XQuartz/issues/54
Signed-off-by: Jeremy Huddleston Sequoia <jeremyhu@apple.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/startx.cpp b/startx.cpp
index 33b9eb7..125c398 100644
--- a/startx.cpp
+++ b/startx.cpp
@@ -114,7 +114,7 @@ else
 fi
 
 if [ x`defaults read $X11_PREFS_DOMAIN enable_iglx` = x1 ] ; then
-    defaultserverargs="$defaultserverargs +iglx"
+    defaultserverargs="$defaultserverargs +iglx +extension GLX"
 else
     defaultserverargs="$defaultserverargs -iglx"
 fi