From 9809f2702208c3bd2083d23ebfd7106f9769d6dc Mon Sep 17 00:00:00 2001
From: David Vierra <codewarrior@hawaii.rr.com>
Date: Tue, 19 Jan 2016 22:14:29 -1000
Subject: [PATCH] Disable a WorldView's rendering if an error occurs.

---
 src/mcedit2/worldview/worldview.py | 25 ++++++++++++++++---------
 1 file changed, 16 insertions(+), 9 deletions(-)

diff --git a/src/mcedit2/worldview/worldview.py b/src/mcedit2/worldview/worldview.py
index f0211ee..1108906 100644
--- a/src/mcedit2/worldview/worldview.py
+++ b/src/mcedit2/worldview/worldview.py
@@ -564,18 +564,25 @@ class WorldView(QGLWidget):
             return
         super(WorldView, self).glDraw(*args, **kwargs)
 
+    shouldRender = True
     def paintGL(self):
-        with profiler.context("paintGL: %s" % self):
-            self.frameSamples.append(time.time())
-            if self.textureAtlas:
-                self.textureAtlas.update()
+        if not self.shouldRender:
+            return
+        try:
+            with profiler.context("paintGL: %s" % self):
+                self.frameSamples.append(time.time())
+                if self.textureAtlas:
+                    self.textureAtlas.update()
 
-            with profiler.context("renderScene"):
-                rendernode.renderScene(self.renderGraph)
+                with profiler.context("renderScene"):
+                    rendernode.renderScene(self.renderGraph)
 
-        self.doneCurrent()
-        self.bufferSwapDone = False
-        self.doSwapBuffers.emit()
+            self.doneCurrent()
+            self.bufferSwapDone = False
+            self.doSwapBuffers.emit()
+        except:
+            self.shouldRender = False
+            raise
 
     def swapDone(self):
         self.bufferSwapDone = True