Depsgraph: Begin work on making depsgraph per-scene-layer

This is a first step towards proper depsgraph "ownership", where
we would allow scene to be in multiple states dependent on active
workspace or scene layer.

This commit introduces a basic API to get proper dependency graph
for a given scene layer. It also renames scene->depsgraph to
depsgraph_legacy, so it's easier to search0-n-replace in the future.

1 files changed, 5 insertions, 0 deletions

diff --git a/source/blender/blenkernel/BKE_scene.h b/source/blender/blenkernel/BKE_scene.h
index 5047070012c..6ca79d8c7cd 100644
--- a/source/blender/blenkernel/BKE_scene.h
+++ b/source/blender/blenkernel/BKE_scene.h
@@ -39,12 +39,14 @@ extern "C" {
 
 struct AviCodecData;
 struct BaseLegacy;
+struct Depsgraph;
 struct EvaluationContext;
 struct Main;
 struct Object;
 struct Base;
 struct QuicktimeCodecData;
 struct RenderData;
+struct SceneLayer;
 struct SceneRenderLayer;
 struct Scene;
 struct SceneCollection;
@@ -184,6 +186,9 @@ void        BKE_scene_multiview_view_prefix_get(struct Scene *scene, const char
 void        BKE_scene_multiview_videos_dimensions_get(const struct RenderData *rd, const size_t width, const size_t height, size_t *r_width, size_t *r_height);
 int         BKE_scene_multiview_num_videos_get(const struct RenderData *rd);
 
+/* depsgraph */
+struct Depsgraph* BKE_scene_get_depsgraph(struct Scene *scene, struct SceneLayer *scene_layer);
+
 #ifdef __cplusplus
 }
 #endif