[Bf-blender-cvs] [a8739ae6c2a] master: Fix regression in recent change 0708733c46cb6b50697c1b80a6541d6fb410267e
Campbell Barton
noreply at git.blender.org
Thu Sep 2 08:17:38 CEST 2021
Commit: a8739ae6c2acbf0737113fbebf7e5ac0a942aaee
Author: Campbell Barton
Date: Thu Sep 2 15:39:52 2021 +1000
Branches: master
https://developer.blender.org/rBa8739ae6c2acbf0737113fbebf7e5ac0a942aaee
Fix regression in recent change 0708733c46cb6b50697c1b80a6541d6fb410267e
Adding a mirror modifier in edit-mode crashed.
Freeing meshes that hold a shallow copy happens in multiple places
while calculating modifiers, making it impractical to clear the
edit-mode pointer before freeing the mesh (as done in
BKE_editmesh_free_derived_caches).
Add a struct member to the edit-mesh struct so evaluated copies
don't free the edit-mesh contents.
===================================================================
M source/blender/blenkernel/BKE_editmesh.h
M source/blender/blenkernel/intern/editmesh.c
M source/blender/blenkernel/intern/mesh.c
M source/blender/blenkernel/intern/mesh_wrapper.c
===================================================================
diff --git a/source/blender/blenkernel/BKE_editmesh.h b/source/blender/blenkernel/BKE_editmesh.h
index ffd8ac42c63..2c24b1a5487 100644
--- a/source/blender/blenkernel/BKE_editmesh.h
+++ b/source/blender/blenkernel/BKE_editmesh.h
@@ -78,6 +78,11 @@ typedef struct BMEditMesh {
/** Temp variables for x-mirror editing (-1 when the layer does not exist). */
int mirror_cdlayer;
+ /**
+ * Enable for evaluated copies, causes the edit-mesh to free the memory, not it's contents.
+ */
+ char is_shallow_copy;
+
/**
* ID data is older than edit-mode data.
* Set #Main.is_memfile_undo_flush_needed when enabling.
diff --git a/source/blender/blenkernel/intern/editmesh.c b/source/blender/blenkernel/intern/editmesh.c
index e178b0c42d0..83e03ef44f5 100644
--- a/source/blender/blenkernel/intern/editmesh.c
+++ b/source/blender/blenkernel/intern/editmesh.c
@@ -211,14 +211,10 @@ void BKE_editmesh_looptri_and_normals_calc_with_partial(BMEditMesh *em,
void BKE_editmesh_free_derived_caches(BMEditMesh *em)
{
if (em->mesh_eval_cage) {
- Mesh *me = em->mesh_eval_cage;
- me->edit_mesh = NULL;
- BKE_id_free(NULL, me);
+ BKE_id_free(NULL, em->mesh_eval_cage);
}
if (em->mesh_eval_final && em->mesh_eval_final != em->mesh_eval_cage) {
- Mesh *me = em->mesh_eval_final;
- me->edit_mesh = NULL;
- BKE_id_free(NULL, me);
+ BKE_id_free(NULL, em->mesh_eval_final);
}
em->mesh_eval_cage = em->mesh_eval_final = NULL;
diff --git a/source/blender/blenkernel/intern/mesh.c b/source/blender/blenkernel/intern/mesh.c
index 6814083817c..2efe0d77d87 100644
--- a/source/blender/blenkernel/intern/mesh.c
+++ b/source/blender/blenkernel/intern/mesh.c
@@ -161,7 +161,9 @@ static void mesh_free_data(ID *id)
BLI_freelistN(&mesh->vertex_group_names);
if (mesh->edit_mesh) {
- BKE_editmesh_free_data(mesh->edit_mesh);
+ if (mesh->edit_mesh->is_shallow_copy == false) {
+ BKE_editmesh_free_data(mesh->edit_mesh);
+ }
MEM_freeN(mesh->edit_mesh);
mesh->edit_mesh = NULL;
}
diff --git a/source/blender/blenkernel/intern/mesh_wrapper.c b/source/blender/blenkernel/intern/mesh_wrapper.c
index de7259757bf..bc1ffeb8cf4 100644
--- a/source/blender/blenkernel/intern/mesh_wrapper.c
+++ b/source/blender/blenkernel/intern/mesh_wrapper.c
@@ -69,7 +69,9 @@ Mesh *BKE_mesh_wrapper_from_editmesh_with_coords(BMEditMesh *em,
/* Use edit-mesh directly where possible. */
me->runtime.is_original = true;
- me->edit_mesh = em;
+
+ me->edit_mesh = MEM_dupallocN(em);
+ me->edit_mesh->is_shallow_copy = true;
/* Make sure, we crash if these are ever used. */
#ifdef DEBUG
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