Modifier: skip edit-mesh conversion for armature, curve & lattice

This is an improvement over 2.7x which converted edit-mesh to mesh
(CDDM) for all 3 modifiers.

Overall this increases performance in edit-mode by around 15-20%.

1 files changed, 5 insertions, 12 deletions

diff --git a/source/blender/modifiers/intern/MOD_lattice.c b/source/blender/modifiers/intern/MOD_lattice.c
index a6eaf7e78aa..574ea969be4 100644
--- a/source/blender/modifiers/intern/MOD_lattice.c
+++ b/source/blender/modifiers/intern/MOD_lattice.c
@@ -130,23 +130,16 @@ static void deformVerts(ModifierData *md,
 static void deformVertsEM(ModifierData *md,
                           const ModifierEvalContext *ctx,
                           struct BMEditMesh *em,
-                          struct Mesh *mesh,
+                          struct Mesh *UNUSED(mesh),
                           float (*vertexCos)[3],
                           int numVerts)
 {
-  struct Mesh *mesh_src = MOD_deform_mesh_eval_get(
-      ctx->object, em, mesh, NULL, numVerts, false, false);
-
-  /* TODO(Campbell): use edit-mode data only (remove this line). */
-  if (mesh_src != NULL) {
-    BKE_mesh_wrapper_ensure_mdata(mesh_src);
-  }
+  LatticeModifierData *lmd = (LatticeModifierData *)md;
 
-  deformVerts(md, ctx, mesh_src, vertexCos, numVerts);
+  MOD_previous_vcos_store(md, vertexCos); /* if next modifier needs original vertices */
 
-  if (!ELEM(mesh_src, NULL, mesh)) {
-    BKE_id_free(NULL, mesh_src);
-  }
+  BKE_lattice_deform_coords_with_editmesh(
+      lmd->object, ctx->object, vertexCos, numVerts, lmd->flag, lmd->name, lmd->strength, em);
 }
 
 static void panel_draw(const bContext *C, Panel *panel)