From 3adc8f7c82e50907d8f74b9b4ebba3699dd9033a Mon Sep 17 00:00:00 2001
From: zeromus <zeromus@users.noreply.github.com>
Date: Wed, 20 Apr 2016 12:33:59 -0500
Subject: [PATCH] dont send 0-sized framebuffers deep into displaymanager
 (prevents crashes when sending fullscreen windows to other monitors
 sometimes, and probably other bugs)

---
 BizHawk.Client.EmuHawk/DisplayManager/DisplayManager.cs | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/BizHawk.Client.EmuHawk/DisplayManager/DisplayManager.cs b/BizHawk.Client.EmuHawk/DisplayManager/DisplayManager.cs
index 2b502ea612..bcd6009670 100644
--- a/BizHawk.Client.EmuHawk/DisplayManager/DisplayManager.cs
+++ b/BizHawk.Client.EmuHawk/DisplayManager/DisplayManager.cs
@@ -593,6 +593,12 @@ namespace BizHawk.Client.EmuHawk
 
 		FilterProgram UpdateSourceInternal(JobInfo job)
 		{
+			if (job.chain_outsize.Width == 0 || job.chain_outsize.Height == 0)
+			{
+				//this has to be a NOP, because lots of stuff will malfunction on a 0-sized viewport
+				return null;
+			}
+
 			//no drawing actually happens. it's important not to begin drawing on a control
 			if (!job.simulate && !job.offscreen)
 			{