From de4699bd240b13ab6d7043828af48fc3edb79dda Mon Sep 17 00:00:00 2001
From: Brandon Wright <bearoso@gmail.com>
Date: Tue, 6 Nov 2018 11:39:17 -0600
Subject: [PATCH] GTK+: Use glXQueryExtension, not epoxy_has_glx.

---
 gtk/src/gtk_display_driver_opengl.cpp | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/gtk/src/gtk_display_driver_opengl.cpp b/gtk/src/gtk_display_driver_opengl.cpp
index aeb68ebd..8b825d1f 100644
--- a/gtk/src/gtk_display_driver_opengl.cpp
+++ b/gtk/src/gtk_display_driver_opengl.cpp
@@ -658,8 +658,10 @@ int S9xOpenGLDisplayDriver::query_availability ()
     {
         Display *dpy = GDK_DISPLAY_XDISPLAY (gdk_display_get_default ());
 
-        if (epoxy_has_glx (dpy))
-            return 1;
+        if (glXQueryExtension (dpy, NULL, NULL) == True)
+        {
+           return 1;
+        }
     }
 #endif