Differential D12852 Diff 43244 source/blender/depsgraph/intern/eval/deg_eval_copy_on_write.cc

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source/blender/depsgraph/intern/eval/deg_eval_copy_on_write.cc

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}		}

/* Callback for BKE_library_foreach_ID_link which remaps original ID pointer		/* Callback for BKE_library_foreach_ID_link which remaps original ID pointer
* with the one created by CoW system. */		* with the one created by CoW system. */

struct RemapCallbackUserData {		struct RemapCallbackUserData {
/* Dependency graph for which remapping is happening. */		/* Dependency graph for which remapping is happening. */
const Depsgraph *depsgraph;		const Depsgraph *depsgraph;
/* Create placeholder for ID nodes for cases when we need to remap original
* ID to it[s CoW version but we don't have required ID node yet.
*
* This happens when expansion happens a ta construction time. */
DepsgraphNodeBuilder *node_builder;
bool create_placeholders;
};		};

int foreach_libblock_remap_callback(LibraryIDLinkCallbackData *cb_data)		int foreach_libblock_remap_callback(LibraryIDLinkCallbackData *cb_data)
{		{
ID **id_p = cb_data->id_pointer;		ID **id_p = cb_data->id_pointer;
if (*id_p == nullptr) {		if (*id_p == nullptr) {
return IDWALK_RET_NOP;		return IDWALK_RET_NOP;
}		}

ID *id_self = cb_data->id_self;
RemapCallbackUserData user_data = (RemapCallbackUserData )cb_data->user_data;		RemapCallbackUserData user_data = (RemapCallbackUserData )cb_data->user_data;
const Depsgraph *depsgraph = user_data->depsgraph;		const Depsgraph *depsgraph = user_data->depsgraph;
ID id_orig = id_p;		ID id_orig = id_p;
if (deg_copy_on_write_is_needed(id_orig)) {		if (deg_copy_on_write_is_needed(id_orig)) {
ID *id_cow;		ID *id_cow = depsgraph->get_cow_id(id_orig);
if (user_data->create_placeholders) {
/* Special workaround to stop creating temp datablocks for
* objects which are coming from scene's collection and which
* are never linked to any of layers.
*
* TODO(sergey): Ideally we need to tell ID looper to ignore
* those or at least make it more reliable check where the
* pointer is coming from. */
const ID_Type id_type = GS(id_orig->name);
const ID_Type id_type_self = GS(id_self->name);
if (id_type == ID_OB && id_type_self == ID_SCE) {
IDNode *id_node = depsgraph->find_id_node(id_orig);
if (id_node == nullptr) {
id_cow = id_orig;
}
else {
id_cow = id_node->id_cow;
}
}
else {
id_cow = user_data->node_builder->ensure_cow_id(id_orig);
}
}
else {
id_cow = depsgraph->get_cow_id(id_orig);
}
BLI_assert(id_cow != nullptr);		BLI_assert(id_cow != nullptr);
DEG_COW_PRINT(		DEG_COW_PRINT(
" Remapping datablock for %s: id_orig=%p id_cow=%p\n", id_orig->name, id_orig, id_cow);		" Remapping datablock for %s: id_orig=%p id_cow=%p\n", id_orig->name, id_orig, id_cow);
*id_p = id_cow;		*id_p = id_cow;
}		}
return IDWALK_RET_NOP;		return IDWALK_RET_NOP;
}		}

▲ Show 20 Lines • Show All 260 Lines • ▼ Show 20 Lines	if (*id_p != nullptr) {
if (!check_datablock_expanded(*id_p)) {		if (!check_datablock_expanded(*id_p)) {
data->is_valid = false;		data->is_valid = false;
/* TODO(sergey): Store which is not valid? */		/* TODO(sergey): Store which is not valid? */
}		}
}		}
return IDWALK_RET_NOP;		return IDWALK_RET_NOP;
}		}

} // namespace

/* Actual implementation of logic which "expands" all the data which was not		/* Actual implementation of logic which "expands" all the data which was not
* yet copied-on-write.		* yet copied-on-write.
*		*
* NOTE: Expects that CoW datablock is empty. */		* NOTE: Expects that CoW datablock is empty. */
ID deg_expand_copy_on_write_datablock(const Depsgraph depsgraph,		ID deg_expand_copy_on_write_datablock(const Depsgraph depsgraph, const IDNode *id_node)
const IDNode *id_node,
DepsgraphNodeBuilder *node_builder,
bool create_placeholders)
{		{
const ID *id_orig = id_node->id_orig;		const ID *id_orig = id_node->id_orig;
ID *id_cow = id_node->id_cow;		ID *id_cow = id_node->id_cow;
const int id_cow_recalc = id_cow->recalc;		const int id_cow_recalc = id_cow->recalc;

/* No need to expand such datablocks, their copied ID is same as original		/* No need to expand such datablocks, their copied ID is same as original
* one already. */		* one already. */
if (!deg_copy_on_write_is_needed(id_orig)) {		if (!deg_copy_on_write_is_needed(id_orig)) {
return id_cow;		return id_cow;
}		}

DEG_COW_PRINT(		DEG_COW_PRINT(
"Expanding datablock for %s: id_orig=%p id_cow=%p\n", id_orig->name, id_orig, id_cow);		"Expanding datablock for %s: id_orig=%p id_cow=%p\n", id_orig->name, id_orig, id_cow);

/* Sanity checks. */		/* Sanity checks. */
/* NOTE: Disabled for now, conflicts when re-using evaluated datablock when		BLI_assert(check_datablock_expanded(id_cow) == false);
* rebuilding dependencies. */
if (check_datablock_expanded(id_cow) && create_placeholders) {
deg_free_copy_on_write_datablock(id_cow);
}
// BLI_assert(check_datablock_expanded(id_cow) == false);
/* Copy data from original ID to a copied version. */		/* Copy data from original ID to a copied version. */
/* TODO(sergey): Avoid doing full ID copy somehow, make Mesh to reference		/* TODO(sergey): Avoid doing full ID copy somehow, make Mesh to reference
* original geometry arrays for until those are modified. */		* original geometry arrays for until those are modified. */
/* TODO(sergey): We do some trickery with temp bmain and extra ID pointer		/* TODO(sergey): We do some trickery with temp bmain and extra ID pointer
* just to be able to use existing API. Ideally we need to replace this with		* just to be able to use existing API. Ideally we need to replace this with
* in-place copy from existing datablock to a prepared memory.		* in-place copy from existing datablock to a prepared memory.
*		*
* NOTE: We don't use BKE_main_{new,free} because:		* NOTE: We don't use BKE_main_{new,free} because:
Show All 36 Lines	#ifdef NESTED_ID_NASTY_WORKAROUND
ntree_hack_remap_pointers(depsgraph, id_cow);		ntree_hack_remap_pointers(depsgraph, id_cow);
#endif		#endif
/* Do it now, so remapping will understand that possibly remapped self ID		/* Do it now, so remapping will understand that possibly remapped self ID
* is not to be remapped again. */		* is not to be remapped again. */
deg_tag_copy_on_write_id(id_cow, id_orig);		deg_tag_copy_on_write_id(id_cow, id_orig);
/* Perform remapping of the nodes. */		/* Perform remapping of the nodes. */
RemapCallbackUserData user_data = {nullptr};		RemapCallbackUserData user_data = {nullptr};
user_data.depsgraph = depsgraph;		user_data.depsgraph = depsgraph;
user_data.node_builder = node_builder;
user_data.create_placeholders = create_placeholders;
BKE_library_foreach_ID_link(nullptr,		BKE_library_foreach_ID_link(nullptr,
id_cow,		id_cow,
foreach_libblock_remap_callback,		foreach_libblock_remap_callback,
(void *)&user_data,		(void *)&user_data,
IDWALK_IGNORE_EMBEDDED_ID);		IDWALK_IGNORE_EMBEDDED_ID);
/* Correct or tweak some pointers which are not taken care by foreach		/* Correct or tweak some pointers which are not taken care by foreach
* from above. */		* from above. */
update_id_after_copy(depsgraph, id_node, id_orig, id_cow);		update_id_after_copy(depsgraph, id_node, id_orig, id_cow);
id_cow->recalc = id_cow_recalc;		id_cow->recalc = id_cow_recalc;
return id_cow;		return id_cow;
}		}

/* NOTE: Depsgraph is supposed to have ID node already. */		} // namespace
ID deg_expand_copy_on_write_datablock(const Depsgraph depsgraph,
ID *id_orig,
DepsgraphNodeBuilder *node_builder,
bool create_placeholders)
{
IDNode *id_node = depsgraph->find_id_node(id_orig);
BLI_assert(id_node != nullptr);
return deg_expand_copy_on_write_datablock(depsgraph, id_node, node_builder, create_placeholders);
}

ID deg_update_copy_on_write_datablock(const Depsgraph depsgraph, const IDNode *id_node)		ID deg_update_copy_on_write_datablock(const Depsgraph depsgraph, const IDNode *id_node)
{		{
const ID *id_orig = id_node->id_orig;		const ID *id_orig = id_node->id_orig;
ID *id_cow = id_node->id_cow;		ID *id_cow = id_node->id_cow;
/* Similar to expansion, no need to do anything here. */		/* Similar to expansion, no need to do anything here. */
if (!deg_copy_on_write_is_needed(id_orig)) {		if (!deg_copy_on_write_is_needed(id_orig)) {
return id_cow;		return id_cow;
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