Multires: Remove legacy compatibility code

It was rather a huge chunk of code, which started to become
more harder to maintain with the transition to OpenSubdiv based
implementation. Because of this transition, the compatibility was
also rather on a poor side.

Remove compatibility support for pre-2.50.9 multires.

Ref T77107

Reviewed By: brecht, mont29

Differential Revision: https://developer.blender.org/D9238

1 files changed, 0 insertions, 44 deletions

diff --git a/source/blender/blenkernel/intern/mesh.c b/source/blender/blenkernel/intern/mesh.c
index 6ea83cf4330..97520654e7b 100644
--- a/source/blender/blenkernel/intern/mesh.c
+++ b/source/blender/blenkernel/intern/mesh.c
@@ -275,50 +275,6 @@ static void mesh_blend_read_data(BlendDataReader *reader, ID *id)
     mesh->totselect = 0;
   }
 
-  /* Multires data */
-  BLO_read_data_address(reader, &mesh->mr);
-  if (mesh->mr) {
-    BLO_read_list(reader, &mesh->mr->levels);
-    MultiresLevel *lvl = mesh->mr->levels.first;
-
-    CustomData_blend_read(reader, &mesh->mr->vdata, lvl->totvert);
-    BKE_defvert_blend_read(
-        reader, lvl->totvert, CustomData_get(&mesh->mr->vdata, 0, CD_MDEFORMVERT));
-    CustomData_blend_read(reader, &mesh->mr->fdata, lvl->totface);
-
-    BLO_read_data_address(reader, &mesh->mr->edge_flags);
-    BLO_read_data_address(reader, &mesh->mr->edge_creases);
-
-    BLO_read_data_address(reader, &mesh->mr->verts);
-
-    /* If mesh has the same number of vertices as the
-     * highest multires level, load the current mesh verts
-     * into multires and discard the old data. Needed
-     * because some saved files either do not have a verts
-     * array, or the verts array contains out-of-date
-     * data. */
-    if (mesh->totvert == ((MultiresLevel *)mesh->mr->levels.last)->totvert) {
-      if (mesh->mr->verts) {
-        MEM_freeN(mesh->mr->verts);
-      }
-      mesh->mr->verts = MEM_dupallocN(mesh->mvert);
-    }
-
-    for (; lvl; lvl = lvl->next) {
-      BLO_read_data_address(reader, &lvl->verts);
-      BLO_read_data_address(reader, &lvl->faces);
-      BLO_read_data_address(reader, &lvl->edges);
-      BLO_read_data_address(reader, &lvl->colfaces);
-    }
-  }
-
-  /* if multires is present but has no valid vertex data,
-   * there's no way to recover it; silently remove multires */
-  if (mesh->mr && !mesh->mr->verts) {
-    multires_free(mesh->mr);
-    mesh->mr = NULL;
-  }
-
   if ((BLO_read_requires_endian_switch(reader)) && mesh->tface) {
     TFace *tf = mesh->tface;
     for (int i = 0; i < mesh->totface; i++, tf++) {