[Bf-blender-cvs] [784a3ccf793] blender2.8: Fix hang rendering with motion blur.

[Brecht Van Lommel]

Commit: 784a3ccf793d249bd506f03321f9201f54673c6f
Author: Brecht Van Lommel
Date:   Mon Jun 4 16:51:27 2018 +0200
Branches: blender2.8
https://developer.blender.org/rB784a3ccf793d249bd506f03321f9201f54673c6f

Fix hang rendering with motion blur.

===================================================================

M	source/blender/render/intern/source/external_engine.c

===================================================================

diff --git a/source/blender/render/intern/source/external_engine.c b/source/blender/render/intern/source/external_engine.c
index afdb8c5dd65..b541c993bc7 100644
--- a/source/blender/render/intern/source/external_engine.c
+++ b/source/blender/render/intern/source/external_engine.c
@@ -513,6 +513,10 @@ void RE_engine_frame_set(RenderEngine *engine, int frame, float subframe)
 		return;
 	}
 
+#ifdef WITH_PYTHON
+	BPy_BEGIN_ALLOW_THREADS;
+#endif
+
 	Render *re = engine->re;
 	double cfra = (double)frame + (double)subframe;
 
@@ -520,15 +524,11 @@ void RE_engine_frame_set(RenderEngine *engine, int frame, float subframe)
 	BKE_scene_frame_set(re->scene, cfra);
 	BKE_scene_graph_update_for_newframe(engine->depsgraph, re->main);
 
-#ifdef WITH_PYTHON
-	BPy_BEGIN_ALLOW_THREADS;
-#endif
+	BKE_scene_camera_switch_update(re->scene);
 
 #ifdef WITH_PYTHON
 	BPy_END_ALLOW_THREADS;
 #endif
-
-	BKE_scene_camera_switch_update(re->scene);
 }
 
 /* Bake */