Cycles: add a Pass Node

The Pass struct is now a Node and the passes are moved from the Film
class to the Scene class.

The Pass Node only has `type` and `name` as sockets as those seem to be
the only properties settable by exporters (other properties are implicit
and depend on the pass type).

This is part of T79131.

Reviewed By: brecht

Differential Revision: https://developer.blender.org/D8591

1 files changed, 8 insertions, 2 deletions

diff --git a/intern/cycles/blender/blender_sync.cpp b/intern/cycles/blender/blender_sync.cpp
index 511061db08a..f0b5ab087bb 100644
--- a/intern/cycles/blender/blender_sync.cpp
+++ b/intern/cycles/blender/blender_sync.cpp
@@ -372,8 +372,10 @@ void BlenderSync::sync_film(BL::SpaceView3D &b_v3d)
   Film *film = scene->film;
   Film prevfilm = *film;
 
+  vector<Pass> prevpasses = scene->passes;
+
   if (b_v3d) {
-    film->display_pass = update_viewport_display_passes(b_v3d, film->passes);
+    film->display_pass = update_viewport_display_passes(b_v3d, scene->passes);
   }
 
   film->exposure = get_float(cscene, "film_exposure");
@@ -403,7 +405,11 @@ void BlenderSync::sync_film(BL::SpaceView3D &b_v3d)
 
   if (film->modified(prevfilm)) {
     film->tag_update(scene);
-    film->tag_passes_update(scene, prevfilm.passes, false);
+  }
+
+  if (!Pass::equals(prevpasses, scene->passes)) {
+    film->tag_passes_update(scene, prevpasses, false);
+    film->tag_update(scene);
   }
 }