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/* SPDX-License-Identifier: GPL-2.0-or-later
* Copyright 2019 Blender Foundation. All rights reserved. */
/** \file
* \ingroup depsgraph
*/
#include "intern/eval/deg_eval_runtime_backup_object.h"
#include <cstring>
#include "DNA_mesh_types.h"
#include "BLI_listbase.h"
#include "BKE_action.h"
#include "BKE_object.h"
namespace blender::deg {
ObjectRuntimeBackup::ObjectRuntimeBackup(const Depsgraph * /*depsgraph*/)
: base_flag(0), base_local_view_bits(0)
{
/* TODO(sergey): Use something like BKE_object_runtime_reset(). */
memset(&runtime, 0, sizeof(runtime));
}
void ObjectRuntimeBackup::init_from_object(Object *object)
{
/* Store evaluated mesh and curve_cache, and make sure we don't free it. */
runtime = object->runtime;
BKE_object_runtime_reset(object);
/* Keep bbox (for now at least). */
object->runtime.bb = runtime.bb;
/* Object update will override actual object->data to an evaluated version.
* Need to make sure we don't have data set to evaluated one before free
* anything. */
object->data = runtime.data_orig;
/* Make a backup of base flags. */
base_flag = object->base_flag;
base_local_view_bits = object->base_local_view_bits;
/* Backup runtime data of all modifiers. */
backup_modifier_runtime_data(object);
/* Backup runtime data of all pose channels. */
backup_pose_channel_runtime_data(object);
}
void ObjectRuntimeBackup::backup_modifier_runtime_data(Object *object)
{
LISTBASE_FOREACH (ModifierData *, modifier_data, &object->modifiers) {
if (modifier_data->runtime == nullptr) {
continue;
}
const SessionUUID &session_uuid = modifier_data->session_uuid;
BLI_assert(BLI_session_uuid_is_generated(&session_uuid));
modifier_runtime_data.add(session_uuid, ModifierDataBackup(modifier_data));
modifier_data->runtime = nullptr;
}
}
void ObjectRuntimeBackup::backup_pose_channel_runtime_data(Object *object)
{
if (object->pose != nullptr) {
LISTBASE_FOREACH (bPoseChannel *, pchan, &object->pose->chanbase) {
const SessionUUID &session_uuid = pchan->runtime.session_uuid;
BLI_assert(BLI_session_uuid_is_generated(&session_uuid));
pose_channel_runtime_data.add(session_uuid, pchan->runtime);
BKE_pose_channel_runtime_reset(&pchan->runtime);
}
}
}
void ObjectRuntimeBackup::restore_to_object(Object *object)
{
ID *data_orig = object->runtime.data_orig;
ID *data_eval = runtime.data_eval;
BoundBox *bb = object->runtime.bb;
object->runtime = runtime;
object->runtime.data_orig = data_orig;
object->runtime.bb = bb;
if (ELEM(object->type, OB_MESH, OB_LATTICE, OB_CURVE, OB_FONT) && data_eval != nullptr) {
if (object->id.recalc & ID_RECALC_GEOMETRY) {
/* If geometry is tagged for update it means, that part of
* evaluated mesh are not valid anymore. In this case we can not
* have any "persistent" pointers to point to an invalid data.
*
* We restore object's data datablock to an original copy of
* that datablock. */
object->data = data_orig;
/* After that, immediately free the invalidated caches. */
BKE_object_free_derived_caches(object);
}
else {
/* Do same thing as object update: override actual object data pointer with evaluated
* datablock, but only if the evaluated data has the same type as the original data. */
if (GS(((ID *)object->data)->name) == GS(data_eval->name)) {
object->data = data_eval;
}
/* Evaluated mesh simply copied edit_mesh pointer from
* original mesh during update, need to make sure no dead
* pointers are left behind. */
if (object->type == OB_MESH) {
Mesh *mesh_eval = (Mesh *)data_eval;
Mesh *mesh_orig = (Mesh *)data_orig;
mesh_eval->edit_mesh = mesh_orig->edit_mesh;
}
}
}
else if (ELEM(object->type, OB_CURVES, OB_POINTCLOUD, OB_VOLUME)) {
if (object->id.recalc & ID_RECALC_GEOMETRY) {
/* Free evaluated caches. */
object->data = data_orig;
BKE_object_free_derived_caches(object);
}
else {
object->data = object->runtime.data_eval;
}
}
object->base_flag = base_flag;
object->base_local_view_bits = base_local_view_bits;
/* Restore modifier's runtime data.
* NOTE: Data of unused modifiers will be freed there. */
restore_modifier_runtime_data(object);
restore_pose_channel_runtime_data(object);
}
void ObjectRuntimeBackup::restore_modifier_runtime_data(Object *object)
{
LISTBASE_FOREACH (ModifierData *, modifier_data, &object->modifiers) {
const SessionUUID &session_uuid = modifier_data->session_uuid;
BLI_assert(BLI_session_uuid_is_generated(&session_uuid));
optional<ModifierDataBackup> backup = modifier_runtime_data.pop_try(session_uuid);
if (backup.has_value()) {
modifier_data->runtime = backup->runtime;
}
}
for (ModifierDataBackup &backup : modifier_runtime_data.values()) {
const ModifierTypeInfo *modifier_type_info = BKE_modifier_get_info(backup.type);
BLI_assert(modifier_type_info != nullptr);
modifier_type_info->freeRuntimeData(backup.runtime);
}
}
void ObjectRuntimeBackup::restore_pose_channel_runtime_data(Object *object)
{
if (object->pose != nullptr) {
LISTBASE_FOREACH (bPoseChannel *, pchan, &object->pose->chanbase) {
const SessionUUID &session_uuid = pchan->runtime.session_uuid;
optional<bPoseChannel_Runtime> runtime = pose_channel_runtime_data.pop_try(session_uuid);
if (runtime.has_value()) {
pchan->runtime = *runtime;
}
}
}
for (bPoseChannel_Runtime &runtime : pose_channel_runtime_data.values()) {
BKE_pose_channel_runtime_free(&runtime);
}
}
} // namespace blender::deg
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