From 90c734a39f9125fb9aa4f185a02e02f22d272081 Mon Sep 17 00:00:00 2001
From: "alexey.lysiuk" <alexey.lysiuk@gmail.com>
Date: Tue, 19 Dec 2017 18:07:29 +0200
Subject: [PATCH] Fixed VM abort when drawing from ZScript happens during 0
 game tic

https://forum.zdoom.org/viewtopic.php?t=58523
https://forum.zdoom.org/viewtopic.php?t=58780
---
 src/d_main.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/d_main.cpp b/src/d_main.cpp
index 6247a5339e..656a2ca3b5 100644
--- a/src/d_main.cpp
+++ b/src/d_main.cpp
@@ -797,7 +797,13 @@ void D_Display ()
 		case GS_LEVEL:
 		case GS_TITLELEVEL:
 			if (!gametic)
+			{
+				if (!screen->HasBegun2D())
+				{
+					screen->Begin2D(false);
+				}
 				break;
+			}
 
 			if (StatusBar != NULL)
 			{