Fix T46678: Extending left handle of a VSE multicam effect strip with snap creates frame stills.

Also fixes cache handling for those strips, they need more radical flushing...

1 files changed, 11 insertions, 0 deletions

diff --git a/source/blender/blenkernel/intern/sequencer.c b/source/blender/blenkernel/intern/sequencer.c
index 633f0232516..a87935ae23b 100644
--- a/source/blender/blenkernel/intern/sequencer.c
+++ b/source/blender/blenkernel/intern/sequencer.c
@@ -4252,6 +4252,17 @@ bool BKE_sequence_tx_test(Sequence *seq)
 	return !(seq->type & SEQ_TYPE_EFFECT) || (BKE_sequence_effect_get_num_inputs(seq->type) == 0);
 }
 
+/**
+ * Return \a true if given \a seq needs a complete cleanup of its cache when it is transformed.
+ *
+ * Some (effect) strip types need a complete recache of themselves when they are transformed, because
+ * they do not 'contain' anything and do not have any explicit relations to other strips.
+ */
+bool BKE_sequence_tx_fullupdate_test(Sequence *seq)
+{
+	return BKE_sequence_tx_test(seq) && ELEM(seq->type, SEQ_TYPE_ADJUSTMENT, SEQ_TYPE_MULTICAM);
+}
+
 static bool seq_overlap(Sequence *seq1, Sequence *seq2)
 {
 	return (seq1 != seq2 && seq1->machine == seq2->machine &&