From a9a8eedd163e17fcf345726fd4c4db891771cac8 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Sybren=20A=2E=20St=C3=BCvel?= <sybren@blender.org>
Date: Wed, 18 Sep 2019 15:26:04 +0200
Subject: Fix T65816: Alembic export of procedural mesh results in a static
 mesh and crashes

The static mesh issue described in T65816 has been resolved by @Sergey
in T60094.

This commit fixes the last bit of the puzzle, which was two-fold:
- A missing depsgraph update when setting `orig_object.data = new_mesh`
  from Python. Thanks @Sergey for providing the fix :)
- Properly locking the interface while exporting. This prevents crashes
  as described in T60094. The previous approach of calling
  `BKE_spacedata_draw_locks()` was not enough.
---
 source/blender/alembic/intern/alembic_capi.cc      |  7 ++++---
 source/blender/depsgraph/intern/depsgraph_build.cc | 10 +++-------
 2 files changed, 7 insertions(+), 10 deletions(-)

diff --git a/source/blender/alembic/intern/alembic_capi.cc b/source/blender/alembic/intern/alembic_capi.cc
index 6547ce54a00..98e5477f2b2 100644
--- a/source/blender/alembic/intern/alembic_capi.cc
+++ b/source/blender/alembic/intern/alembic_capi.cc
@@ -222,6 +222,7 @@ static void find_iobject(const IObject &object, IObject &ret, const std::string
 struct ExportJobData {
   ViewLayer *view_layer;
   Main *bmain;
+  wmWindowManager *wm;
 
   char filename[1024];
   ExportSettings settings;
@@ -246,8 +247,7 @@ static void export_startjob(void *customdata, short *stop, short *do_update, flo
    * scene frame in separate threads
    */
   G.is_rendering = true;
-  BKE_spacedata_draw_locks(true);
-
+  WM_set_locked_interface(data->wm, true);
   G.is_break = false;
 
   DEG_graph_build_from_view_layer(
@@ -296,7 +296,7 @@ static void export_endjob(void *customdata)
   }
 
   G.is_rendering = false;
-  BKE_spacedata_draw_locks(false);
+  WM_set_locked_interface(data->wm, false);
 }
 
 bool ABC_export(Scene *scene,
@@ -310,6 +310,7 @@ bool ABC_export(Scene *scene,
 
   job->view_layer = CTX_data_view_layer(C);
   job->bmain = CTX_data_main(C);
+  job->wm = CTX_wm_manager(C);
   job->export_ok = false;
   BLI_strncpy(job->filename, filepath, 1024);
 
diff --git a/source/blender/depsgraph/intern/depsgraph_build.cc b/source/blender/depsgraph/intern/depsgraph_build.cc
index 968ed8ef403..e34c8af0cf3 100644
--- a/source/blender/depsgraph/intern/depsgraph_build.cc
+++ b/source/blender/depsgraph/intern/depsgraph_build.cc
@@ -59,6 +59,7 @@ extern "C" {
 #include "intern/node/deg_node_id.h"
 #include "intern/node/deg_node_operation.h"
 
+#include "intern/depsgraph_registry.h"
 #include "intern/depsgraph_type.h"
 
 /* ****************** */
@@ -356,12 +357,7 @@ void DEG_graph_relations_update(Depsgraph *graph, Main *bmain, Scene *scene, Vie
 void DEG_relations_tag_update(Main *bmain)
 {
   DEG_GLOBAL_DEBUG_PRINTF(TAG, "%s: Tagging relations for update.\n", __func__);
-  LISTBASE_FOREACH (Scene *, scene, &bmain->scenes) {
-    LISTBASE_FOREACH (ViewLayer *, view_layer, &scene->view_layers) {
-      Depsgraph *depsgraph = (Depsgraph *)BKE_scene_get_depsgraph(bmain, scene, view_layer, false);
-      if (depsgraph != NULL) {
-        DEG_graph_tag_relations_update(depsgraph);
-      }
-    }
+  for (DEG::Depsgraph *depsgraph : DEG::get_all_registered_graphs(bmain)) {
+    DEG_graph_tag_relations_update(reinterpret_cast<Depsgraph *>(depsgraph));
   }
 }
-- 
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