From 11808862f2d3ecad1b4600f1526e03ef8ce28f7c Mon Sep 17 00:00:00 2001
From: rdb <git@rdb.name>
Date: Thu, 9 May 2019 18:44:13 +0200
Subject: [PATCH] showbase: fix BufferViewer when main window is opened later

Fixes #648
---
 direct/src/showbase/ShowBase.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/direct/src/showbase/ShowBase.py b/direct/src/showbase/ShowBase.py
index c0e6d9dd16..ddb7fb48d8 100644
--- a/direct/src/showbase/ShowBase.py
+++ b/direct/src/showbase/ShowBase.py
@@ -829,9 +829,10 @@ class ShowBase(DirectObject.DirectObject):
             win.requestProperties(props)
 
         mainWindow = False
-        if self.win == None:
+        if self.win is None:
             mainWindow = True
             self.win = win
+            self.bufferViewer.win = win
 
         self.winList.append(win)