Cleanup: add resource manager for cryptomatte session.

Auto frees cryptomatte session when it the pointer is collected from the
stack.

Reviewed By: Jacques Lucke

Differential Revision: https://developer.blender.org/D10667

1 files changed, 11 insertions, 0 deletions

diff --git a/source/blender/blenkernel/BKE_cryptomatte.hh b/source/blender/blenkernel/BKE_cryptomatte.hh
index f10b4c1f7c4..98fdfc965bc 100644
--- a/source/blender/blenkernel/BKE_cryptomatte.hh
+++ b/source/blender/blenkernel/BKE_cryptomatte.hh
@@ -29,6 +29,8 @@
 #include "BLI_map.hh"
 #include "BLI_string_ref.hh"
 
+#include "BKE_cryptomatte.h"
+
 struct ID;
 
 namespace blender::bke::cryptomatte {
@@ -103,4 +105,13 @@ struct CryptomatteStampDataCallbackData {
   static void extract_layer_manifest(void *_data, const char *propname, char *propvalue, int len);
 };
 
+struct CryptomatteSessionDeleter {
+  void operator()(CryptomatteSession *session)
+  {
+    BKE_cryptomatte_free(session);
+  }
+};
+
+using CryptomatteSessionPtr = std::unique_ptr<CryptomatteSession, CryptomatteSessionDeleter>;
+
 }  // namespace blender::bke::cryptomatte