Fix T70101: Displace modifier handles empty vertex group incorrectly

2019-09-20 10:41:29 +02:00
parent f83a8a61ff
commit 44d0c868bf
1 changed files with 5 additions and 0 deletions
--- a/source/blender/modifiers/intern/MOD_displace.c
+++ b/source/blender/modifiers/intern/MOD_displace.c
@@ -294,6 +294,11 @@ static void displaceModifier_do(DisplaceModifierData *dmd,
  mvert = mesh->mvert;
  MOD_get_vgroup(ob, mesh, dmd->defgrp_name, &dvert, &defgrp_index);

+  if (defgrp_index >= 0 && dvert == NULL) {
+    /* There is a vertex group, but it has no vertices. */
+    return;
+  }
+
  Tex *tex_target = dmd->texture;
  if (tex_target != NULL) {
    tex_co = MEM_calloc_arrayN((size_t)numVerts, sizeof(*tex_co), "displaceModifier_do tex_co");