1 files changed, 5 insertions, 4 deletions

diff --git a/source/blender/modifiers/intern/MOD_displace.c b/source/blender/modifiers/intern/MOD_displace.c
index 07da18f990d..010292d2ebb 100644
--- a/source/blender/modifiers/intern/MOD_displace.c
+++ b/source/blender/modifiers/intern/MOD_displace.c
@@ -177,6 +177,7 @@ typedef struct DisplaceUserdata {
   float (*vertexCos)[3];
   float local_mat[4][4];
   MVert *mvert;
+  const float (*vert_normals)[3];
   float (*vert_clnors)[3];
 } DisplaceUserdata;
 
@@ -194,7 +195,6 @@ static void displaceModifier_do_task(void *__restrict userdata,
   bool use_global_direction = data->use_global_direction;
   float(*tex_co)[3] = data->tex_co;
   float(*vertexCos)[3] = data->vertexCos;
-  MVert *mvert = data->mvert;
   float(*vert_clnors)[3] = data->vert_clnors;
 
   const float delta_fixed = 1.0f -
@@ -272,9 +272,7 @@ static void displaceModifier_do_task(void *__restrict userdata,
       add_v3_v3(vertexCos[iter], local_vec);
       break;
     case MOD_DISP_DIR_NOR:
-      vertexCos[iter][0] += delta * (mvert[iter].no[0] / 32767.0f);
-      vertexCos[iter][1] += delta * (mvert[iter].no[1] / 32767.0f);
-      vertexCos[iter][2] += delta * (mvert[iter].no[2] / 32767.0f);
+      madd_v3_v3fl(vertexCos[iter], data->vert_normals[iter], delta);
       break;
     case MOD_DISP_DIR_CLNOR:
       madd_v3_v3fl(vertexCos[iter], vert_clnors[iter], delta);
@@ -363,6 +361,9 @@ static void displaceModifier_do(DisplaceModifierData *dmd,
   data.vertexCos = vertexCos;
   copy_m4_m4(data.local_mat, local_mat);
   data.mvert = mvert;
+  if (direction == MOD_DISP_DIR_NOR) {
+    data.vert_normals = BKE_mesh_vertex_normals_ensure(mesh);
+  }
   data.vert_clnors = vert_clnors;
   if (tex_target != NULL) {
     data.pool = BKE_image_pool_new();