Fix T46015: normals_split_custom_set_from_vertices doesn't work with zero vectors

This was simply broken for vertex case (indexing loop normals with vert indices...).

Turns out to be rather verbose to replace on-the-fly zero normals by default ones correctly,
and do not want to make a full copy of the given custom normals array, so now this one is
editied in place (replacing zero vectors by correct default normals). Don't think this
could be a serious issue anyway.

1 files changed, 2 insertions, 2 deletions

diff --git a/source/blender/blenkernel/BKE_mesh.h b/source/blender/blenkernel/BKE_mesh.h
index 41241988f2b..a27688c1c61 100644
--- a/source/blender/blenkernel/BKE_mesh.h
+++ b/source/blender/blenkernel/BKE_mesh.h
@@ -234,11 +234,11 @@ void BKE_mesh_normals_loop_split(
 
 void BKE_mesh_normals_loop_custom_set(
         const struct MVert *mverts, const int numVerts, struct MEdge *medges, const int numEdges,
-        struct MLoop *mloops, float (*custom_loopnors)[3], const int numLoops,
+        struct MLoop *mloops, float (*r_custom_loopnors)[3], const int numLoops,
         struct MPoly *mpolys, const float (*polynors)[3], const int numPolys,
         short (*r_clnors_data)[2]);
 void BKE_mesh_normals_loop_custom_from_vertices_set(
-        const struct MVert *mverts, float (*custom_vertnors)[3], const int numVerts,
+        const struct MVert *mverts, float (*r_custom_vertnors)[3], const int numVerts,
         struct MEdge *medges, const int numEdges, struct MLoop *mloops, const int numLoops,
         struct MPoly *mpolys, const float (*polynors)[3], const int numPolys,
         short (*r_clnors_data)[2]);