Depsgraph: Bind base by it's index

For the performance we convert object bases list to an array
during view layer evaluation. This makes it possible to have
very cheap index-based base lookup.

The goal of this change is to get rid of base used for function
binding, and avoid scene datablock expansion at the depsgraph
construction time.

1 files changed, 9 insertions, 2 deletions

diff --git a/source/blender/blenkernel/intern/object_update.c b/source/blender/blenkernel/intern/object_update.c
index de2002624c0..7904e479933 100644
--- a/source/blender/blenkernel/intern/object_update.c
+++ b/source/blender/blenkernel/intern/object_update.c
@@ -433,9 +433,16 @@ void BKE_object_data_select_update(const EvaluationContext *UNUSED(eval_ctx),
 	}
 }
 
-void BKE_object_eval_flush_base_flags(const EvaluationContext *UNUSED(eval_ctx),
-                                      Object *object, Base *base, bool is_from_set)
+void BKE_object_eval_flush_base_flags(const EvaluationContext *eval_ctx,
+                                      Object *object, int base_index, bool is_from_set)
 {
+	ViewLayer *view_layer = eval_ctx->view_layer;
+	BLI_assert(view_layer->object_bases_array != NULL);
+	BLI_assert(base_index >= 0);
+	BLI_assert(base_index < MEM_allocN_len(view_layer->object_bases_array) / sizeof(Base *));
+	Base *base = view_layer->object_bases_array[base_index];
+	BLI_assert(base->object == object);
+
 	DEG_debug_print_eval(__func__, object->id.name, object);
 
 	/* Make sure we have the base collection settings is already populated.