From 6fe1d4b9aad73e92a44459125294f4102753da35 Mon Sep 17 00:00:00 2001
From: David Vierra <codewarrior@hawaii.rr.com>
Date: Sat, 6 Feb 2016 23:44:21 -1000
Subject: [PATCH] Collect garbage after changing views in WorldList

If the old view is reaped mid-frame, it calls makeCurrent and screws
with the current rendering.
---
 src/mcedit2/worldlist.py | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/mcedit2/worldlist.py b/src/mcedit2/worldlist.py
index d3c40bd..56d820f 100644
--- a/src/mcedit2/worldlist.py
+++ b/src/mcedit2/worldlist.py
@@ -431,6 +431,10 @@ class WorldListWidget(QtGui.QDialog, Ui_worldList):
 
         self.chunkLoader = None
 
+        # ensure WorldView gets freed now and not later
+        # if it is freed later, it will call makeCurrent and ruin another view's render
+        import gc; gc.collect()
+
     def hide(self):
         self.removeWorldView()
         super(WorldListWidget, self).hide()