From b53eca171158ea395af11e82a1be0c5158180c79 Mon Sep 17 00:00:00 2001
From: Julian Eisel <eiseljulian@gmail.com>
Date: Tue, 9 Aug 2016 04:32:38 +0200
Subject: [PATCH] Cycles: Fix crash in empty scenes

To recreate, just delete default cube and render.

Simple fix, but @maiself or @sergey may want to double-check ;)
---
 intern/cycles/render/object.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/intern/cycles/render/object.cpp b/intern/cycles/render/object.cpp
index 28cc4fe58fa..62076f3a865 100644
--- a/intern/cycles/render/object.cpp
+++ b/intern/cycles/render/object.cpp
@@ -611,6 +611,9 @@ void ObjectManager::device_update_flags(Device *device,
 
 void ObjectManager::device_update_patch_map_offsets(Device *device, DeviceScene *dscene, Scene *scene)
 {
+	if (scene->objects.size() == 0)
+		return;
+
 	uint4* objects = (uint4*)dscene->objects.get_data();
 
 	bool update = false;