== Sequencer ==

Fixes Fix for [#25713] VSE shows and renders wrong straight alpha gradient even after convert to pr
(see revision: 34540, fix by Janne)

By not breaking the seqcache interface API.

Added comments to header file, so that it is easier to understand, how the
cache API is supposed to work.

1 files changed, 7 insertions, 0 deletions

diff --git a/source/blender/blenkernel/BKE_sequencer.h b/source/blender/blenkernel/BKE_sequencer.h
index 33bff1cd6a7..42786e1c9be 100644
--- a/source/blender/blenkernel/BKE_sequencer.h
+++ b/source/blender/blenkernel/BKE_sequencer.h
@@ -217,9 +217,16 @@ void seq_stripelem_cache_destruct(void);
 
 void seq_stripelem_cache_cleanup(void);
 
+/* returned ImBuf is properly refed and has to be freed */
 struct ImBuf * seq_stripelem_cache_get(
 	SeqRenderData context, struct Sequence * seq, 
 	float cfra, seq_stripelem_ibuf_t type);
+
+/* passed ImBuf is properly refed, so ownership is *not* 
+   transfered to the cache.
+   you can pass the same ImBuf multiple times to the cache without problems.
+*/
+   
 void seq_stripelem_cache_put(
 	SeqRenderData context, struct Sequence * seq, 
 	float cfra, seq_stripelem_ibuf_t type, struct ImBuf * nval);