From ac1810fb173a49b3ae299d114fa635a8b619735b Mon Sep 17 00:00:00 2001
From: Olly Betts <olly@survex.com>
Date: Tue, 8 Sep 2026 15:12:56 +0000
Subject: [PATCH] Force X11 if wx GL library is loaded

Bug: https://trac.wxwidgets.org/ticket/17702
Bug-Debian: https://bugs.debian.org/900678
Forwarded: not-needed
Last-Update: 2022-11-28


Gbp-Pq: Name force-x11-for-wxgl.patch
---
 src/gtk/glcanvas.cpp | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/src/gtk/glcanvas.cpp b/src/gtk/glcanvas.cpp
index b3251cd..f93ab98 100644
--- a/src/gtk/glcanvas.cpp
+++ b/src/gtk/glcanvas.cpp
@@ -18,6 +18,17 @@
 #include "wx/gtk/private/wrapgdk.h"
 #include "wx/gtk/private/backend.h"
 
+#if GTK_CHECK_VERSION(3,10,0)
+// wxGTK's wxGLCanvas requires X11 currently, so tell GDK that so under
+// Wayland the app is still run using X11.  We put this here so it's
+// only run when the wx GL library is loaded (in a monolithic build this
+// will always be active if wx's GL support is enabled).
+struct ForceX11 {
+    ForceX11() { gdk_set_allowed_backends("x11"); }
+};
+static ForceX11 forcex11;
+#endif
+
 #ifdef __WXGTK3__
 extern "C" {
 static gboolean draw(GtkWidget* widget, cairo_t* cr, wxGLCanvas* win)
-- 
2.30.2