Differential D12016 Diff 39884 source/blender/blenkernel/intern/layer.c

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source/blender/blenkernel/intern/layer.c

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* \ingroup bke		* \ingroup bke
*/		*/

/* Allow using deprecated functionality for .blend file I/O. */		/* Allow using deprecated functionality for .blend file I/O. */
#define DNA_DEPRECATED_ALLOW		#define DNA_DEPRECATED_ALLOW

#include <string.h>		#include <string.h>

		#include "CLG_log.h"

#include "BLI_listbase.h"		#include "BLI_listbase.h"
		#include "BLI_mempool.h"
#include "BLI_string.h"		#include "BLI_string.h"
#include "BLI_string_utf8.h"		#include "BLI_string_utf8.h"
#include "BLI_string_utils.h"		#include "BLI_string_utils.h"
#include "BLI_threads.h"		#include "BLI_threads.h"
#include "BLT_translation.h"		#include "BLT_translation.h"

#include "BKE_animsys.h"		#include "BKE_animsys.h"
#include "BKE_collection.h"		#include "BKE_collection.h"
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#include "DRW_engine.h"		#include "DRW_engine.h"

#include "RE_engine.h"		#include "RE_engine.h"

#include "MEM_guardedalloc.h"		#include "MEM_guardedalloc.h"

#include "BLO_read_write.h"		#include "BLO_read_write.h"

		static CLG_LogRef LOG = {"bke.layercollection"};

/* Set of flags which are dependent on a collection settings. */		/* Set of flags which are dependent on a collection settings. */
static const short g_base_collection_flags = (BASE_VISIBLE_DEPSGRAPH \| BASE_VISIBLE_VIEWLAYER \|		static const short g_base_collection_flags = (BASE_VISIBLE_DEPSGRAPH \| BASE_VISIBLE_VIEWLAYER \|
BASE_SELECTABLE \| BASE_ENABLED_VIEWPORT \|		BASE_SELECTABLE \| BASE_ENABLED_VIEWPORT \|
BASE_ENABLED_RENDER \| BASE_HOLDOUT \|		BASE_ENABLED_RENDER \| BASE_HOLDOUT \|
BASE_INDIRECT_ONLY);		BASE_INDIRECT_ONLY);

/* prototype */		/* prototype */
static void object_bases_iterator_next(BLI_Iterator *iter, const int flag);		static void object_bases_iterator_next(BLI_Iterator *iter, const int flag);
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* collection for each collection. Note that the scene collection tree can		* collection for each collection. Note that the scene collection tree can
* contain link or override collections, and so this is also called on .blend		* contain link or override collections, and so this is also called on .blend
* file load to ensure any new or removed collections are synced.		* file load to ensure any new or removed collections are synced.
*		*
* The view layer also contains a list of bases for each object that exists		* The view layer also contains a list of bases for each object that exists
* in at least one layer collection. That list is also synchronized here, and		* in at least one layer collection. That list is also synchronized here, and
* stores state like selection. */		* stores state like selection. */

		typedef struct LayerCollectionResync {
		struct LayerCollectionResync prev, next;

		/* Temp data used to generate a queue during valid layer search. See
		* #layer_collection_resync_find. */
		struct LayerCollectionResync *queue_next;

		/* LayerCollection and Collection wrapped by this data. */
		LayerCollection *layer;
		Collection *collection;

		/* Hierarchical relationships in the old, existing ViewLayer state (except for newly created
		* layers). */
		struct LayerCollectionResync *parent_layer_resync;
		ListBase children_layer_resync;

		/* This layer still points to a valid collection. */
		bool is_usable;
		/* This layer is still valid as a parent, i.e. at least one of its original layer children is
		* usable and matches one of its current children collections. */
		bool is_valid_as_parent;
		/* This layer is still valid as a child, i.e. its original layer parent is usable and matches one
		* of its current parents collections. */
		brechtUnsubmitted Not Done Inline Actions Replace `i.e.` with `:` "i.e." means that the statement is not precisely accurate and there is some detail being omitted, which is not the case. brecht: Replace `i.e.` with `:` "i.e." means that the statement is not precisely accurate and there is…
		mont29AuthorUnsubmitted Done Inline Actions Not sure I agree with that understanding of `i.e.`? It's just a shortcut for `that is (to say)`, it means we are going to add some precision to the first part of the sentence. https://en.wiktionary.org/wiki/i.e. mont29: Not sure I agree with that understanding of `i.e.`? It's just a shortcut for `that is (to say)`…
		brechtUnsubmitted Done Inline Actions Fair enough. brecht: Fair enough.
		bool is_valid_as_child;
		/* This layer is still fully valid in the new collection hierarchy, i.e. itself and all of its
		* prents fully match the current collection hierarchy.
		brechtUnsubmitted Done Inline Actions prents -> parents brecht: prents -> parents
		* OR
		* This layer has already been re-used to match the new collections hierarchy. */
		bool is_used;
		} LayerCollectionResync;

		static LayerCollectionResync *layer_collection_resync_create_recurse(
		LayerCollectionResync parent_layer_resync, LayerCollection layer, BLI_mempool *mempool)
		{
		LayerCollectionResync *layer_resync = BLI_mempool_calloc(mempool);

		layer_resync->layer = layer;
		layer_resync->collection = layer->collection;
		layer_resync->parent_layer_resync = parent_layer_resync;
		if (parent_layer_resync != NULL) {
		BLI_addtail(&parent_layer_resync->children_layer_resync, layer_resync);
		}

		layer_resync->is_usable = (layer->collection != NULL);
		layer_resync->is_valid_as_child =
		layer_resync->is_usable && (parent_layer_resync == NULL \|\|
		(parent_layer_resync->is_usable &&
		BLI_findptr(&parent_layer_resync->layer->collection->children,
		layer->collection,
		offsetof(CollectionChild, collection)) != NULL));
		if (layer_resync->is_valid_as_child) {
		layer_resync->is_used = parent_layer_resync != NULL ? parent_layer_resync->is_used : true;
		}
		else {
		layer_resync->is_used = false;
		}

		if (BLI_listbase_is_empty(&layer->layer_collections)) {
		layer_resync->is_valid_as_parent = layer_resync->is_usable;
		}
		else {
		LISTBASE_FOREACH (LayerCollection *, child_layer, &layer->layer_collections) {
		LayerCollectionResync *child_layer_resync = layer_collection_resync_create_recurse(
		layer_resync, child_layer, mempool);
		if (layer_resync->is_usable && child_layer_resync->is_valid_as_child) {
		layer_resync->is_valid_as_parent = true;
		}
		}
		}

		CLOG_INFO(&LOG,
		4,
		"Old LayerCollection for %s is...\n\tusable: %d\n\tvalid parent: %d\n\tvalid child: "
		"%d\n\tused: %d\n",
		layer_resync->collection ? layer_resync->collection->id.name : "<NONE>",
		layer_resync->is_usable,
		layer_resync->is_valid_as_parent,
		layer_resync->is_valid_as_child,
		layer_resync->is_used);

		return layer_resync;
		}

		static LayerCollectionResync layer_collection_resync_find(LayerCollectionResync layer_resync,
		Collection *child_collection)
		{
		/* Given the given parent, valid layer collection, find in the old hierarchy the best possible
		* unused layer matching the given child collection.
		*
		* This uses the following euristics:
		brechtUnsubmitted Done Inline Actions euristics -> heuristics brecht: euristics -> heuristics
		* - Prefer a layer descendant of the given parent one if possible.
		* - Prefer a layer as closely related as possible from the given parent.
		* - Do not used layers that are not head (highest possible ancestor) of a local valid hierarchy
		* branch, since we can assume we could then re-use its ancestor instead.
		*
		* A queue is used to ensure this order of preferences.
		*/

		BLI_assert(layer_resync->collection != child_collection);
		BLI_assert(child_collection != NULL);

		LayerCollectionResync *current_layer_resync = NULL;
		LayerCollectionResync *root_layer_resync = layer_resync;

		LayerCollectionResync queue_head = layer_resync, queue_tail = layer_resync;
		layer_resync->queue_next = NULL;

		while (queue_head != NULL) {
		current_layer_resync = queue_head;
		queue_head = current_layer_resync->queue_next;

		if (current_layer_resync->collection == child_collection &&
		(current_layer_resync->parent_layer_resync == layer_resync \|\|
		(!current_layer_resync->is_used && !current_layer_resync->is_valid_as_child))) {
		/* This layer is a valid candidate, because its collection matches the seeked one, AND:
		* - It is a direct child of the initial given parent ('unchanged hierarchy' case), OR
		* - It is not currently used, and not part of a valid hierarchy (sub-)chain.
		*/
		break;
		}

		/* Else, add all its direct children for further searching. */
		LISTBASE_FOREACH (LayerCollectionResync *,
		child_layer_resync,
		&current_layer_resync->children_layer_resync) {
		/* Add to tail of the queue. */
		queue_tail->queue_next = child_layer_resync;
		child_layer_resync->queue_next = NULL;
		queue_tail = child_layer_resync;
		if (queue_head == NULL) {
		queue_head = queue_tail;
		}
		}

		/* If all descendants from current layer have been processed, go one step higher and
		* process all of its other siblings. */
		if (queue_head == NULL && root_layer_resync->parent_layer_resync != NULL) {
		LISTBASE_FOREACH (LayerCollectionResync *,
		sibling_layer_resync,
		&root_layer_resync->parent_layer_resync->children_layer_resync) {
		if (sibling_layer_resync == root_layer_resync) {
		continue;
		}
		/* Add to tail of the queue. */
		queue_tail->queue_next = sibling_layer_resync;
		sibling_layer_resync->queue_next = NULL;
		queue_tail = sibling_layer_resync;
		if (queue_head == NULL) {
		queue_head = queue_tail;
		}
		}
		root_layer_resync = root_layer_resync->parent_layer_resync;
		}

		current_layer_resync = NULL;
		}

		return current_layer_resync;
		}

		static void layer_collection_resync_unused_layers_free(ViewLayer *view_layer,
		LayerCollectionResync *layer_resync)
		{
		LISTBASE_FOREACH (
		LayerCollectionResync *, child_layer_resync, &layer_resync->children_layer_resync) {
		layer_collection_resync_unused_layers_free(view_layer, child_layer_resync);
		}

		if (!layer_resync->is_used) {
		CLOG_INFO(&LOG,
		4,
		"Freeing unused LayerCollection for %s",
		layer_resync->collection != NULL ? layer_resync->collection->id.name :
		"<Deleted Collection>");

		if (layer_resync->layer == view_layer->active_collection) {
		view_layer->active_collection = NULL;
		}

		/* We do not want to go recursive here, this is handled through the LayerCollectionResync data
		* wrapper. */
		MEM_freeN(layer_resync->layer);
		layer_resync->layer = NULL;
		layer_resync->collection = NULL;
		layer_resync->is_usable = false;
		}
		}

static void layer_collection_objects_sync(ViewLayer *view_layer,		static void layer_collection_objects_sync(ViewLayer *view_layer,
LayerCollection *layer,		LayerCollection *layer,
ListBase *r_lb_new_object_bases,		ListBase *r_lb_new_object_bases,
const short collection_restrict,		const short collection_restrict,
const short layer_restrict,		const short layer_restrict,
const ushort local_collections_bits)		const ushort local_collections_bits)
{		{
/* No need to sync objects if the collection is excluded. */		/* No need to sync objects if the collection is excluded. */
▲ Show 20 Lines • Show All 52 Lines • ▼ Show 20 Lines	if (layer->flag & LAYER_COLLECTION_INDIRECT_ONLY) {
base->flag_from_collection \|= BASE_INDIRECT_ONLY;		base->flag_from_collection \|= BASE_INDIRECT_ONLY;
}		}

layer->runtime_flag \|= LAYER_COLLECTION_HAS_OBJECTS;		layer->runtime_flag \|= LAYER_COLLECTION_HAS_OBJECTS;
}		}
}		}

static void layer_collection_sync(ViewLayer *view_layer,		static void layer_collection_sync(ViewLayer *view_layer,
const ListBase *lb_children_collections,		LayerCollectionResync *layer_resync,
ListBase *r_lb_children_layers,		BLI_mempool *layer_resync_mempool,
ListBase *r_lb_new_object_bases,		ListBase *r_lb_new_object_bases,
const short parent_layer_flag,		const short parent_layer_flag,
const short parent_collection_restrict,		const short parent_collection_restrict,
const short parent_layer_restrict,		const short parent_layer_restrict,
const ushort parent_local_collections_bits)		const ushort parent_local_collections_bits)
{		{
/* TODO: support recovery after removal of intermediate collections, reordering, ..		/* This function assumes current 'parent' layer collection is already fully (re)synced and valid
* For local edits we can make editing operating do the appropriate thing, but for		* regarding current Collection hierarchy.
* linking we can only sync after the fact. */		*
		* It will process all the children collections of the collection from the given 'parent' layer,
/* Remove layer collections that no longer have a corresponding scene collection. */		* re-use or create layer collections for each of them, and ensure orders also match.
LISTBASE_FOREACH_MUTABLE (LayerCollection *, child_layer, r_lb_children_layers) {		*
/* Note that ID remap can set child_layer->collection to NULL when deleting collections. */		* Then it will ensure that the objects owned by the given parent collection have a proper base.
Collection *child_collection = (child_layer->collection != NULL) ?		*
BLI_findptr(lb_children_collections,		* NOTE: This process is recursive.
child_layer->collection,		*/
offsetof(CollectionChild, collection)) :
NULL;

if (child_collection == NULL) {
if (child_layer == view_layer->active_collection) {
view_layer->active_collection = NULL;
}

/* Free recursively. */		/* Temporary storage for all valid (new or reused) children layers. */
layer_collection_free(view_layer, child_layer);		ListBase new_lb_layer = {NULL, NULL};
BLI_freelinkN(r_lb_children_layers, child_layer);
}
}

/* Add layer collections for any new scene collections, and ensure order is the same. */		BLI_assert(layer_resync->is_used);
ListBase lb_new_children_layers = {NULL, NULL};

LISTBASE_FOREACH (const CollectionChild *, child, lb_children_collections) {		LISTBASE_FOREACH (CollectionChild *, child, &layer_resync->collection->children) {
Collection *child_collection = child->collection;		Collection *child_collection = child->collection;
LayerCollection *child_layer = BLI_findptr(		LayerCollectionResync *child_layer_resync = layer_collection_resync_find(layer_resync,
r_lb_children_layers, child_collection, offsetof(LayerCollection, collection));		child_collection);

if (child_layer) {		if (child_layer_resync != NULL) {
BLI_remlink(r_lb_children_layers, child_layer);		BLI_assert(child_layer_resync->collection != NULL);
BLI_addtail(&lb_new_children_layers, child_layer);		BLI_assert(child_layer_resync->layer != NULL);
		BLI_assert(child_layer_resync->is_usable);

		if (child_layer_resync->is_used) {
		CLOG_INFO(&LOG,
		4,
		"Found same existing LayerCollection for %s as child of %s",
		child_collection->id.name,
		layer_resync->collection->id.name);
		}
		else {
		CLOG_INFO(&LOG,
		4,
		"Found a valid unused LayerCollection for %s as child of %s, re-using it",
		child_collection->id.name,
		layer_resync->collection->id.name);
		}

		child_layer_resync->is_used = true;

		/* NOTE: Do not move the resync wrapper to match the new layer hierarchy, so that the old
		* parenting info remains available. In case a search for a valid layer in the children of
		* the current is required again, the old parenting hierarchy is needed as reference, not the
		* new one.
		*/
		BLI_remlink(&child_layer_resync->parent_layer_resync->layer->layer_collections,
		child_layer_resync->layer);
		BLI_addtail(&new_lb_layer, child_layer_resync->layer);
}		}
else {		else {
child_layer = layer_collection_add(&lb_new_children_layers, child_collection);		CLOG_INFO(&LOG,
		4,
		"No available LayerCollection for %s as child of %s, creating a new one",
		child_collection->id.name,
		layer_resync->collection->id.name);

		LayerCollection *child_layer = layer_collection_add(&new_lb_layer, child_collection);
child_layer->flag = parent_layer_flag;		child_layer->flag = parent_layer_flag;

		child_layer_resync = BLI_mempool_calloc(layer_resync_mempool);
		child_layer_resync->collection = child_collection;
		child_layer_resync->layer = child_layer;
		child_layer_resync->is_usable = true;
		child_layer_resync->is_used = true;
		child_layer_resync->is_valid_as_child = true;
		child_layer_resync->is_valid_as_parent = true;
		/* NOTE: Needs to be added to the layer_resync hierarchy so that the resync wrapper gets
		* freed at the end. */
		child_layer_resync->parent_layer_resync = layer_resync;
		BLI_addtail(&layer_resync->children_layer_resync, child_layer_resync);
}		}

		LayerCollection *child_layer = child_layer_resync->layer;

const ushort child_local_collections_bits = parent_local_collections_bits &		const ushort child_local_collections_bits = parent_local_collections_bits &
child_layer->local_collections_bits;		child_layer->local_collections_bits;

/* Tag linked collection as a weak reference so we keep the layer		/* Tag linked collection as a weak reference so we keep the layer
* collection pointer on file load and remember exclude state. */		* collection pointer on file load and remember exclude state. */
id_lib_indirect_weak_link(&child_collection->id);		id_lib_indirect_weak_link(&child_collection->id);

/* Collection restrict is inherited. */		/* Collection restrict is inherited. */
short child_collection_restrict = parent_collection_restrict;		short child_collection_restrict = parent_collection_restrict;
short child_layer_restrict = parent_layer_restrict;		short child_layer_restrict = parent_layer_restrict;
if (!(child_collection->flag & COLLECTION_IS_MASTER)) {		if (!(child_collection->flag & COLLECTION_IS_MASTER)) {
child_collection_restrict \|= child_collection->flag;		child_collection_restrict \|= child_collection->flag;
child_layer_restrict \|= child_layer->flag;		child_layer_restrict \|= child_layer->flag;
}		}

/* Sync child collections. */		/* Sync child collections. */
layer_collection_sync(view_layer,		layer_collection_sync(view_layer,
&child_collection->children,		child_layer_resync,
&child_layer->layer_collections,		layer_resync_mempool,
r_lb_new_object_bases,		r_lb_new_object_bases,
child_layer->flag,		child_layer->flag,
child_collection_restrict,		child_collection_restrict,
child_layer_restrict,		child_layer_restrict,
child_local_collections_bits);		child_local_collections_bits);

/* Layer collection exclude is not inherited, we can skip the remaining process, including		/* Layer collection exclude is not inherited. */
* object bases synchronization. */
child_layer->runtime_flag = 0;		child_layer->runtime_flag = 0;
if (child_layer->flag & LAYER_COLLECTION_EXCLUDE) {		if (child_layer->flag & LAYER_COLLECTION_EXCLUDE) {
continue;		continue;
}		}

/* We separate restrict viewport and visible view layer because a layer collection can be		/* We separate restrict viewport and visible view layer because a layer collection can be
* hidden in the view layer yet (locally) visible in a viewport (if it is not restricted). */		* hidden in the view layer yet (locally) visible in a viewport (if it is not restricted). */
if (child_collection_restrict & COLLECTION_RESTRICT_VIEWPORT) {		if (child_collection_restrict & COLLECTION_RESTRICT_VIEWPORT) {
child_layer->runtime_flag \|= LAYER_COLLECTION_RESTRICT_VIEWPORT;		child_layer->runtime_flag \|= LAYER_COLLECTION_RESTRICT_VIEWPORT;
}		}

if (((child_layer->runtime_flag & LAYER_COLLECTION_RESTRICT_VIEWPORT) == 0) &&		if (((child_layer->runtime_flag & LAYER_COLLECTION_RESTRICT_VIEWPORT) == 0) &&
((child_layer_restrict & LAYER_COLLECTION_HIDE) == 0)) {		((child_layer_restrict & LAYER_COLLECTION_HIDE) == 0)) {
child_layer->runtime_flag \|= LAYER_COLLECTION_VISIBLE_VIEW_LAYER;		child_layer->runtime_flag \|= LAYER_COLLECTION_VISIBLE_VIEW_LAYER;
}		}

layer_collection_objects_sync(view_layer,
child_layer,
r_lb_new_object_bases,
child_collection_restrict,
child_layer_restrict,
child_local_collections_bits);
}

/* Free potentially remaining unused layer collections in old list.
* NOTE: While this does not happen in typical situations, some corner cases (like remapping
* several different collections to a single one) can lead to this list having extra unused
* items. */
LISTBASE_FOREACH_MUTABLE (LayerCollection *, lc, r_lb_children_layers) {
if (lc == view_layer->active_collection) {
view_layer->active_collection = NULL;
}		}

/* Free recursively. */
layer_collection_free(view_layer, lc);
BLI_freelinkN(r_lb_children_layers, lc);
}
BLI_assert(BLI_listbase_is_empty(r_lb_children_layers));

/* Replace layer collection list with new one. */		/* Replace layer collection list with new one. */
*r_lb_children_layers = lb_new_children_layers;		layer_resync->layer->layer_collections = new_lb_layer;
BLI_assert(BLI_listbase_count(lb_children_collections) ==		BLI_assert(BLI_listbase_count(&layer_resync->collection->children) ==
BLI_listbase_count(r_lb_children_layers));		BLI_listbase_count(&new_lb_layer));

		/* Update bases etc. for objects. */
		layer_collection_objects_sync(view_layer,
		layer_resync->layer,
		r_lb_new_object_bases,
		parent_collection_restrict,
		parent_layer_restrict,
		parent_local_collections_bits);
}		}

/**		/**
* Update view layer collection tree from collections used in the scene.		* Update view layer collection tree from collections used in the scene.
* This is used when collections are removed or added, both while editing		* This is used when collections are removed or added, both while editing
* and on file loaded in case linked data changed or went missing.		* and on file loaded in case linked data changed or went missing.
*/		*/
void BKE_layer_collection_sync(const Scene scene, ViewLayer view_layer)		void BKE_layer_collection_sync(const Scene scene, ViewLayer view_layer)
Show All 12 Lines	void BKE_layer_collection_sync(const Scene scene, ViewLayer view_layer)
}		}

/* Clear visible and selectable flags to be reset. */		/* Clear visible and selectable flags to be reset. */
LISTBASE_FOREACH (Base *, base, &view_layer->object_bases) {		LISTBASE_FOREACH (Base *, base, &view_layer->object_bases) {
base->flag &= ~g_base_collection_flags;		base->flag &= ~g_base_collection_flags;
base->flag_from_collection &= ~g_base_collection_flags;		base->flag_from_collection &= ~g_base_collection_flags;
}		}

		/* Generate temporary data representing the old layers hierarchy, and how well it matches the
		* new collections hierarchy. */
		BLI_mempool *layer_resync_mempool = BLI_mempool_create(
		sizeof(LayerCollectionResync), 1024, 1024, BLI_MEMPOOL_NOP);
		LayerCollectionResync *master_layer_resync = layer_collection_resync_create_recurse(
		NULL, view_layer->layer_collections.first, layer_resync_mempool);

/* Generate new layer connections and object bases when collections changed. */		/* Generate new layer connections and object bases when collections changed. */
CollectionChild child = {.next = NULL, .prev = NULL, .collection = scene->master_collection};
const ListBase collections = {.first = &child, .last = &child};
ListBase new_object_bases = {.first = NULL, .last = NULL};		ListBase new_object_bases = {.first = NULL, .last = NULL};

const short parent_exclude = 0, parent_restrict = 0, parent_layer_restrict = 0;		const short parent_exclude = 0, parent_restrict = 0, parent_layer_restrict = 0;
layer_collection_sync(view_layer,		layer_collection_sync(view_layer,
&collections,		master_layer_resync,
&view_layer->layer_collections,		layer_resync_mempool,
&new_object_bases,		&new_object_bases,
parent_exclude,		parent_exclude,
parent_restrict,		parent_restrict,
parent_layer_restrict,		parent_layer_restrict,
~(0));		~(0));

		layer_collection_resync_unused_layers_free(view_layer, master_layer_resync);
		BLI_mempool_destroy(layer_resync_mempool);
		master_layer_resync = NULL;

/* Any remaining object bases are to be removed. */		/* Any remaining object bases are to be removed. */
LISTBASE_FOREACH (Base *, base, &view_layer->object_bases) {		LISTBASE_FOREACH (Base *, base, &view_layer->object_bases) {
if (view_layer->basact == base) {		if (view_layer->basact == base) {
view_layer->basact = NULL;		view_layer->basact = NULL;
}		}

if (base->object) {		if (base->object) {
BLI_ghash_remove(view_layer->object_bases_hash, base->object, NULL, NULL);		BLI_ghash_remove(view_layer->object_bases_hash, base->object, NULL, NULL);
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