Cycles: Improved robustness of hair motion blur.motion_curve_fix

In some instances, the number of control vertices of a hair could change mid-frame.
Cycles would then be unable to calculate proper motion blur for those hairs. This adds
interpolated CVs to fill in for the missing data. While this will not necessarily result in
a fully accurate reconstruction of the guide hair, it preserves motion blur instead of disabling it.

Reviewers: #cycles, sergey

Reviewed By: #cycles, sergey

Subscribers: sergey, brecht, #cycles

Tags: #cycles

Differential Revision: https://developer.blender.org/D3695

1 files changed, 5 insertions, 5 deletions

diff --git a/source/blender/blenlib/BLI_dlrbTree.h b/source/blender/blenlib/BLI_dlrbTree.h
index 6e47fd4ddb3..e776f594a84 100644
--- a/source/blender/blenlib/BLI_dlrbTree.h
+++ b/source/blender/blenlib/BLI_dlrbTree.h
@@ -76,19 +76,19 @@ typedef struct DLRBT_Tree {
 /* Callback Types --------------------------------- */
 
 /* return -1, 0, 1 for whether the given data is less than, equal to, or greater than the given node
- *	- node: <DLRBT_Node> the node to compare to
- *	- data: pointer to the relevant data or values stored in the bitpattern dependent on the function
+ * - node: <DLRBT_Node> the node to compare to
+ * - data: pointer to the relevant data or values stored in the bitpattern dependent on the function
  */
 typedef short (*DLRBT_Comparator_FP)(void *node, void *data);
 
 /* return a new node instance wrapping the given data
- *	- data: pointer to the relevant data to create a subclass of node from
+ * - data: pointer to the relevant data to create a subclass of node from
  */
 typedef DLRBT_Node *(*DLRBT_NAlloc_FP)(void *data);
 
 /* update an existing node instance accordingly to be in sync with the given data *
- *  - node: <DLRBT_Node> the node to update
- *	- data: pointer to the relevant data or values stored in the bitpattern dependent on the function
+ * - node: <DLRBT_Node> the node to update
+ * - data: pointer to the relevant data or values stored in the bitpattern dependent on the function
  */
 typedef void (*DLRBT_NUpdate_FP)(void *node, void *data);