From e9f8b9925f87805633c3654bfee0c5a128b85d87 Mon Sep 17 00:00:00 2001
From: BearOso <bearoso@gmail.com>
Date: Tue, 7 Mar 2023 14:06:59 -0600
Subject: [PATCH] Gtk: Refresh window canvas when first displayed.

Wayland/OpenGL doesn't receive a redraw cue after Gtk resizes the
window and it scales a 256x224 corner of the larger surface up with
the viewport extension.
---
 gtk/src/gtk_s9x.cpp | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/gtk/src/gtk_s9x.cpp b/gtk/src/gtk_s9x.cpp
index 078ed672..5a7f1d74 100644
--- a/gtk/src/gtk_s9x.cpp
+++ b/gtk/src/gtk_s9x.cpp
@@ -228,6 +228,14 @@ void S9xNoROMLoaded()
 
 static bool S9xPauseFunc()
 {
+    static bool first_clear = false;
+
+    if (!first_clear)
+    {
+        top_level->refresh();
+        first_clear = true;
+    }
+
     S9xProcessEvents(true);
 
     if (!S9xNetplayPush())