From 649542daadbe7950d2736634eb09049e9aa43cf0 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Sybren=20A=2E=20St=C3=BCvel?= <sybren@stuvel.eu>
Date: Mon, 12 Nov 2018 15:02:51 +0100
Subject: [PATCH] Prevent crashing Blender when running in the background

---
 blender_cloud/attract/draw.py | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/blender_cloud/attract/draw.py b/blender_cloud/attract/draw.py
index ebf3c59..2c1828e 100644
--- a/blender_cloud/attract/draw.py
+++ b/blender_cloud/attract/draw.py
@@ -232,6 +232,10 @@ def callback_enable():
     if cb_handle:
         return
 
+    # Doing GPU stuff in the background crashes Blender, so let's not.
+    if bpy.app.background:
+        return
+
     line_drawer = AttractLineDrawer()
     cb_handle[:] = bpy.types.SpaceSequenceEditor.draw_handler_add(
         draw_callback_px, (line_drawer,), 'WINDOW', 'POST_VIEW'),