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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) 2020 Blender Foundation.
* All rights reserved.
*/
#include "pipeline.h"
#include "PIL_time.h"
#include "BKE_global.h"
#include "DNA_scene_types.h"
#include "deg_builder_cycle.h"
#include "deg_builder_nodes.h"
#include "deg_builder_relations.h"
#include "deg_builder_transitive.h"
namespace blender {
namespace deg {
AbstractBuilderPipeline::AbstractBuilderPipeline(::Depsgraph *graph,
Main *bmain,
Scene *scene,
ViewLayer *view_layer)
: deg_graph_(reinterpret_cast<Depsgraph *>(graph)),
bmain_(bmain),
scene_(scene),
view_layer_(view_layer),
builder_cache_()
{
}
AbstractBuilderPipeline::~AbstractBuilderPipeline()
{
}
void AbstractBuilderPipeline::build()
{
double start_time = 0.0;
if (G.debug & (G_DEBUG_DEPSGRAPH_BUILD | G_DEBUG_DEPSGRAPH_TIME)) {
start_time = PIL_check_seconds_timer();
}
build_step_sanity_check();
build_step_nodes();
build_step_relations();
build_step_finalize();
if (G.debug & (G_DEBUG_DEPSGRAPH_BUILD | G_DEBUG_DEPSGRAPH_TIME)) {
printf("Depsgraph built in %f seconds.\n", PIL_check_seconds_timer() - start_time);
}
}
void AbstractBuilderPipeline::build_step_sanity_check()
{
BLI_assert(BLI_findindex(&scene_->view_layers, view_layer_) != -1);
BLI_assert(deg_graph_->scene == scene_);
BLI_assert(deg_graph_->view_layer == view_layer_);
}
void AbstractBuilderPipeline::build_step_nodes()
{
/* Generate all the nodes in the graph first */
unique_ptr<DepsgraphNodeBuilder> node_builder = construct_node_builder();
node_builder->begin_build();
build_nodes(*node_builder);
node_builder->end_build();
}
void AbstractBuilderPipeline::build_step_relations()
{
/* Hook up relationships between operations - to determine evaluation order. */
unique_ptr<DepsgraphRelationBuilder> relation_builder = construct_relation_builder();
relation_builder->begin_build();
build_relations(*relation_builder);
relation_builder->build_copy_on_write_relations();
relation_builder->build_driver_relations();
}
void AbstractBuilderPipeline::build_step_finalize()
{
/* Detect and solve cycles. */
deg_graph_detect_cycles(deg_graph_);
/* Simplify the graph by removing redundant relations (to optimize
* traversal later). */
/* TODO: it would be useful to have an option to disable this in cases where
* it is causing trouble. */
if (G.debug_value == 799) {
deg_graph_transitive_reduction(deg_graph_);
}
/* Store pointers to commonly used valuated datablocks. */
deg_graph_->scene_cow = (Scene *)deg_graph_->get_cow_id(°_graph_->scene->id);
/* Flush visibility layer and re-schedule nodes for update. */
deg_graph_build_finalize(bmain_, deg_graph_);
DEG_graph_on_visible_update(bmain_, reinterpret_cast<::Depsgraph *>(deg_graph_), false);
#if 0
if (!DEG_debug_consistency_check(deg_graph_)) {
printf("Consistency validation failed, ABORTING!\n");
abort();
}
#endif
/* Relations are up to date. */
deg_graph_->need_update = false;
}
unique_ptr<DepsgraphNodeBuilder> AbstractBuilderPipeline::construct_node_builder()
{
return std::make_unique<DepsgraphNodeBuilder>(bmain_, deg_graph_, &builder_cache_);
}
unique_ptr<DepsgraphRelationBuilder> AbstractBuilderPipeline::construct_relation_builder()
{
return std::make_unique<DepsgraphRelationBuilder>(bmain_, deg_graph_, &builder_cache_);
}
} // namespace deg
} // namespace blender
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