From 8322a4f6b76960cb4983f8aaf5a74e694aed1384 Mon Sep 17 00:00:00 2001
From: Brecht Van Lommel <brecht@blender.org>
Date: Tue, 1 Mar 2022 19:45:36 +0100
Subject: Fix T92980: missing Cycles video texture update with persistent data

---
 intern/cycles/blender/shader.cpp | 13 ++++---------
 intern/cycles/blender/sync.cpp   |  9 +++++++--
 intern/cycles/blender/sync.h     |  2 +-
 3 files changed, 12 insertions(+), 12 deletions(-)

diff --git a/intern/cycles/blender/shader.cpp b/intern/cycles/blender/shader.cpp
index 418393c2be7..65866525894 100644
--- a/intern/cycles/blender/shader.cpp
+++ b/intern/cycles/blender/shader.cpp
@@ -1587,18 +1587,13 @@ void BlenderSync::sync_lights(BL::Depsgraph &b_depsgraph, bool update_all)
   }
 }
 
-void BlenderSync::sync_shaders(BL::Depsgraph &b_depsgraph, BL::SpaceView3D &b_v3d)
+void BlenderSync::sync_shaders(BL::Depsgraph &b_depsgraph, BL::SpaceView3D &b_v3d, bool update_all)
 {
-  /* for auto refresh images */
-  ImageManager *image_manager = scene->image_manager;
-  const int frame = b_scene.frame_current();
-  const bool auto_refresh_update = image_manager->set_animation_frame_update(frame);
-
   shader_map.pre_sync();
 
-  sync_world(b_depsgraph, b_v3d, auto_refresh_update);
-  sync_lights(b_depsgraph, auto_refresh_update);
-  sync_materials(b_depsgraph, auto_refresh_update);
+  sync_world(b_depsgraph, b_v3d, update_all);
+  sync_lights(b_depsgraph, update_all);
+  sync_materials(b_depsgraph, update_all);
 }
 
 CCL_NAMESPACE_END
diff --git a/intern/cycles/blender/sync.cpp b/intern/cycles/blender/sync.cpp
index 7e6f1535d66..851e4751501 100644
--- a/intern/cycles/blender/sync.cpp
+++ b/intern/cycles/blender/sync.cpp
@@ -259,7 +259,12 @@ void BlenderSync::sync_data(BL::RenderSettings &b_render,
                             int height,
                             void **python_thread_state)
 {
-  if (!has_updates_) {
+  /* For auto refresh images. */
+  ImageManager *image_manager = scene->image_manager;
+  const int frame = b_scene.frame_current();
+  const bool auto_refresh_update = image_manager->set_animation_frame_update(frame);
+
+  if (!has_updates_ && !auto_refresh_update) {
     return;
   }
 
@@ -274,7 +279,7 @@ void BlenderSync::sync_data(BL::RenderSettings &b_render,
   sync_view_layer(b_view_layer);
   sync_integrator(b_view_layer, background);
   sync_film(b_view_layer, b_v3d);
-  sync_shaders(b_depsgraph, b_v3d);
+  sync_shaders(b_depsgraph, b_v3d, auto_refresh_update);
   sync_images();
 
   geometry_synced.clear(); /* use for objects and motion sync */
diff --git a/intern/cycles/blender/sync.h b/intern/cycles/blender/sync.h
index 3722b938863..01bb92331f6 100644
--- a/intern/cycles/blender/sync.h
+++ b/intern/cycles/blender/sync.h
@@ -127,7 +127,7 @@ class BlenderSync {
   /* Shader */
   array<Node *> find_used_shaders(BL::Object &b_ob);
   void sync_world(BL::Depsgraph &b_depsgraph, BL::SpaceView3D &b_v3d, bool update_all);
-  void sync_shaders(BL::Depsgraph &b_depsgraph, BL::SpaceView3D &b_v3d);
+  void sync_shaders(BL::Depsgraph &b_depsgraph, BL::SpaceView3D &b_v3d, bool update_all);
   void sync_nodes(Shader *shader, BL::ShaderNodeTree &b_ntree);
 
   /* Object */
-- 
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