Fix #24388: multires base mesh

- MDisp should be re-allocated if face changed amount of vertices
- Allocate disps array in layerSwap_mdisps to prevent loosing all highres data

1 files changed, 7 insertions, 0 deletions

diff --git a/source/blender/blenkernel/BKE_multires.h b/source/blender/blenkernel/BKE_multires.h
index 4a9b2ec5c0d..a05dce81fbc 100644
--- a/source/blender/blenkernel/BKE_multires.h
+++ b/source/blender/blenkernel/BKE_multires.h
@@ -37,6 +37,8 @@ struct Multires;
 struct MultiresModifierData;
 struct ModifierData;
 struct Object;
+struct Scene;
+struct MDisps;
 
 void multires_mark_as_modified(struct Object *ob);
 
@@ -74,5 +76,10 @@ void multires_load_old_250(struct Mesh *);
 void multiresModifier_scale_disp(struct Scene *scene, struct Object *ob);
 void multiresModifier_prepare_join(struct Scene *scene, struct Object *ob, struct Object *to_ob);
 
+int multires_mdisp_corners(struct MDisps *s);
+
+/* update multires data after topology changing */
+void multires_topology_changed(struct Object *ob);
+
 #endif