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/*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* The Original Code is Copyright (C) 2016 Blender Foundation.
* All rights reserved.
*/
/** \file
* \ingroup depsgraph
*/
#include "intern/builder/deg_builder.h"
#include <cstring>
#include "DNA_ID.h"
#include "DNA_anim_types.h"
#include "DNA_armature_types.h"
#include "DNA_layer_types.h"
#include "DNA_object_types.h"
#include "BLI_stack.h"
#include "BLI_utildefines.h"
#include "BKE_action.h"
#include "intern/builder/deg_builder_cache.h"
#include "intern/builder/deg_builder_remove_noop.h"
#include "intern/depsgraph.h"
#include "intern/depsgraph_relation.h"
#include "intern/depsgraph_tag.h"
#include "intern/depsgraph_type.h"
#include "intern/eval/deg_eval_copy_on_write.h"
#include "intern/node/deg_node.h"
#include "intern/node/deg_node_component.h"
#include "intern/node/deg_node_id.h"
#include "intern/node/deg_node_operation.h"
#include "DEG_depsgraph.h"
namespace blender::deg {
bool deg_check_id_in_depsgraph(const Depsgraph *graph, ID *id_orig)
{
IDNode *id_node = graph->find_id_node(id_orig);
return id_node != nullptr;
}
bool deg_check_base_in_depsgraph(const Depsgraph *graph, Base *base)
{
Object *object_orig = base->base_orig->object;
IDNode *id_node = graph->find_id_node(&object_orig->id);
if (id_node == nullptr) {
return false;
}
return id_node->has_base;
}
/*******************************************************************************
* Base class for builders.
*/
DepsgraphBuilder::DepsgraphBuilder(Main *bmain, Depsgraph *graph, DepsgraphBuilderCache *cache)
: bmain_(bmain), graph_(graph), cache_(cache)
{
}
bool DepsgraphBuilder::need_pull_base_into_graph(Base *base)
{
/* Simple check: enabled bases are always part of dependency graph. */
const int base_flag = (graph_->mode == DAG_EVAL_VIEWPORT) ? BASE_ENABLED_VIEWPORT :
BASE_ENABLED_RENDER;
if (base->flag & base_flag) {
return true;
}
/* More involved check: since we don't support dynamic changes in dependency graph topology and
* all visible objects are to be part of dependency graph, we pull all objects which has animated
* visibility. */
Object *object = base->object;
AnimatedPropertyID property_id;
if (graph_->mode == DAG_EVAL_VIEWPORT) {
property_id = AnimatedPropertyID(&object->id, &RNA_Object, "hide_viewport");
}
else if (graph_->mode == DAG_EVAL_RENDER) {
property_id = AnimatedPropertyID(&object->id, &RNA_Object, "hide_render");
}
else {
BLI_assert(!"Unknown evaluation mode.");
return false;
}
return cache_->isPropertyAnimated(&object->id, property_id);
}
bool DepsgraphBuilder::check_pchan_has_bbone(Object *object, const bPoseChannel *pchan)
{
BLI_assert(object->type == OB_ARMATURE);
if (pchan == nullptr || pchan->bone == nullptr) {
return false;
}
/* We don't really care whether segments are higher than 1 due to static user input (as in,
* rigger entered value like 3 manually), or due to animation. In either way we need to create
* special evaluation. */
if (pchan->bone->segments > 1) {
return true;
}
bArmature *armature = static_cast<bArmature *>(object->data);
AnimatedPropertyID property_id(&armature->id, &RNA_Bone, pchan->bone, "bbone_segments");
/* Check both Object and Armature animation data, because drivers modifying Armature
* state could easily be created in the Object AnimData. */
return cache_->isPropertyAnimated(&object->id, property_id) ||
cache_->isPropertyAnimated(&armature->id, property_id);
}
bool DepsgraphBuilder::check_pchan_has_bbone_segments(Object *object, const bPoseChannel *pchan)
{
/* Proxies don't have BONE_SEGMENTS */
if (ID_IS_LINKED(object) && object->proxy_from != nullptr) {
return false;
}
return check_pchan_has_bbone(object, pchan);
}
bool DepsgraphBuilder::check_pchan_has_bbone_segments(Object *object, const char *bone_name)
{
const bPoseChannel *pchan = BKE_pose_channel_find_name(object->pose, bone_name);
return check_pchan_has_bbone_segments(object, pchan);
}
/*******************************************************************************
* Builder finalizer.
*/
namespace {
void deg_graph_build_flush_visibility(Depsgraph *graph)
{
enum {
DEG_NODE_VISITED = (1 << 0),
};
BLI_Stack *stack = BLI_stack_new(sizeof(OperationNode *), "DEG flush layers stack");
for (IDNode *id_node : graph->id_nodes) {
for (ComponentNode *comp_node : id_node->components.values()) {
comp_node->affects_directly_visible |= id_node->is_directly_visible;
}
}
for (OperationNode *op_node : graph->operations) {
op_node->custom_flags = 0;
op_node->num_links_pending = 0;
for (Relation *rel : op_node->outlinks) {
if ((rel->from->type == NodeType::OPERATION) && (rel->flag & RELATION_FLAG_CYCLIC) == 0) {
++op_node->num_links_pending;
}
}
if (op_node->num_links_pending == 0) {
BLI_stack_push(stack, &op_node);
op_node->custom_flags |= DEG_NODE_VISITED;
}
}
while (!BLI_stack_is_empty(stack)) {
OperationNode *op_node;
BLI_stack_pop(stack, &op_node);
/* Flush layers to parents. */
for (Relation *rel : op_node->inlinks) {
if (rel->from->type == NodeType::OPERATION) {
OperationNode *op_from = (OperationNode *)rel->from;
op_from->owner->affects_directly_visible |= op_node->owner->affects_directly_visible;
}
}
/* Schedule parent nodes. */
for (Relation *rel : op_node->inlinks) {
if (rel->from->type == NodeType::OPERATION) {
OperationNode *op_from = (OperationNode *)rel->from;
if ((rel->flag & RELATION_FLAG_CYCLIC) == 0) {
BLI_assert(op_from->num_links_pending > 0);
--op_from->num_links_pending;
}
if ((op_from->num_links_pending == 0) && (op_from->custom_flags & DEG_NODE_VISITED) == 0) {
BLI_stack_push(stack, &op_from);
op_from->custom_flags |= DEG_NODE_VISITED;
}
}
}
}
BLI_stack_free(stack);
}
} // namespace
void deg_graph_build_finalize(Main *bmain, Depsgraph *graph)
{
/* Make sure dependencies of visible ID datablocks are visible. */
deg_graph_build_flush_visibility(graph);
deg_graph_remove_unused_noops(graph);
/* Re-tag IDs for update if it was tagged before the relations
* update tag. */
for (IDNode *id_node : graph->id_nodes) {
ID *id_orig = id_node->id_orig;
id_node->finalize_build(graph);
int flag = 0;
/* Tag rebuild if special evaluation flags changed. */
if (id_node->eval_flags != id_node->previous_eval_flags) {
flag |= ID_RECALC_TRANSFORM | ID_RECALC_GEOMETRY;
}
/* Tag rebuild if the custom data mask changed. */
if (id_node->customdata_masks != id_node->previous_customdata_masks) {
flag |= ID_RECALC_GEOMETRY;
}
if (!deg_copy_on_write_is_expanded(id_node->id_cow)) {
flag |= ID_RECALC_COPY_ON_WRITE;
/* This means ID is being added to the dependency graph first
* time, which is similar to "ob-visible-change" */
if (GS(id_orig->name) == ID_OB) {
flag |= ID_RECALC_TRANSFORM | ID_RECALC_GEOMETRY;
}
}
/* Restore recalc flags from original ID, which could possibly contain recalc flags set by
* an operator and then were carried on by the undo system. */
flag |= id_orig->recalc;
if (flag != 0) {
graph_id_tag_update(bmain, graph, id_node->id_orig, flag, DEG_UPDATE_SOURCE_RELATIONS);
}
}
}
} // namespace blender::deg
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