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blender-archive/source/blender/depsgraph/intern/depsgraph_eval.cc
Sergey Sharybin 55b24bef55 Depsgraph: Cleanup and code simplification
This is mainly a maintenance commit which was aimed to make work with
this module more pleasant and solve such issues as:

- Annoyance with looong files, which had craftload in them
- Usage of STL for the data structures we've got in BLI
- Possible symbol conflicts
- Not real clear layout of what is located where

So in this commit the following changes are done:

- STL is prohibited, it's not really predictable on various compilers,
  with our BLI algorithms we can predict things much better.

  There are still few usages of std::vector, but that we'll be
  solving later once we've got similar thing in BLI.

- Simplify foreach loops, avoid using const_iterator all over the place.

- New directory layout, which is hopefully easier to follow.

- Some files were split, some of them will be split soon.

  The idea of this is to split huge functions into own files with
  good documentation and everything.

- Removed stuff which was planned for use in the future but was never
  finished, tested or anything.

  Let's wipe it out for now, and bring back once we really start using
  it, so it'll be more clear if it solves our needs.

- All the internal routines were moved to DEG namespace to separate
  them better from rest of blender.

  Some places now annoyingly using DEG::foo, but that we can olve by
  moving some utility functions inside of the namespace.

While working on this we've found some hotspot in updates flush, so
now playback of blenrig is few percent faster (something like 96fps
with previous master and around 99-100fps after this change).

Not saying it's something final, there is still room for cleanup and
API simplification, but those might happen as a regular development
now without doing any global changes.
2016-05-27 18:01:18 +02:00

153 lines
4.2 KiB
C++

/*
* ***** BEGIN GPL LICENSE BLOCK *****
*
* 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) 2013 Blender Foundation.
* All rights reserved.
*
* Original Author: Joshua Leung
* Contributor(s): None Yet
*
* ***** END GPL LICENSE BLOCK *****
*/
/** \file blender/depsgraph/intern/depsgraph_eval.cc
* \ingroup depsgraph
*
* Evaluation engine entrypoints for Depsgraph Engine.
*/
#include "MEM_guardedalloc.h"
extern "C" {
#include "BLI_utildefines.h"
#include "BLI_ghash.h"
#include "BKE_depsgraph.h"
#include "BKE_scene.h"
#include "DEG_depsgraph.h"
} /* extern "C" */
#include "intern/eval/deg_eval.h"
#include "intern/eval/deg_eval_flush.h"
#include "intern/nodes/deg_node.h"
#include "intern/nodes/deg_node_operation.h"
#include "intern/depsgraph.h"
#ifdef WITH_LEGACY_DEPSGRAPH
static bool use_legacy_depsgraph = true;
#endif
/* Unfinished and unused, and takes quite some pre-processing time. */
#undef USE_EVAL_PRIORITY
bool DEG_depsgraph_use_legacy(void)
{
#ifdef DISABLE_NEW_DEPSGRAPH
return true;
#elif defined(WITH_LEGACY_DEPSGRAPH)
return use_legacy_depsgraph;
#else
BLI_assert(!"Should not be used with new depsgraph");
return false;
#endif
}
void DEG_depsgraph_switch_to_legacy(void)
{
#ifdef WITH_LEGACY_DEPSGRAPH
use_legacy_depsgraph = true;
#else
BLI_assert(!"Should not be used with new depsgraph");
#endif
}
void DEG_depsgraph_switch_to_new(void)
{
#ifdef WITH_LEGACY_DEPSGRAPH
use_legacy_depsgraph = false;
#else
BLI_assert(!"Should not be used with new depsgraph");
#endif
}
/* ****************** */
/* Evaluation Context */
/* Create new evaluation context. */
EvaluationContext *DEG_evaluation_context_new(int mode)
{
EvaluationContext *eval_ctx =
(EvaluationContext *)MEM_callocN(sizeof(EvaluationContext),
"EvaluationContext");
eval_ctx->mode = mode;
return eval_ctx;
}
/**
* Initialize evaluation context.
* Used by the areas which currently overrides the context or doesn't have
* access to a proper one.
*/
void DEG_evaluation_context_init(EvaluationContext *eval_ctx, int mode)
{
eval_ctx->mode = mode;
}
/* Free evaluation context. */
void DEG_evaluation_context_free(EvaluationContext *eval_ctx)
{
MEM_freeN(eval_ctx);
}
/* Evaluate all nodes tagged for updating. */
void DEG_evaluate_on_refresh(EvaluationContext *eval_ctx,
Depsgraph *graph,
Scene *scene)
{
DEG::Depsgraph *deg_graph = reinterpret_cast<DEG::Depsgraph *>(graph);
/* Update time on primary timesource. */
DEG::TimeSourceDepsNode *tsrc = deg_graph->find_time_source();
tsrc->cfra = BKE_scene_frame_get(scene);
DEG::deg_evaluate_on_refresh(eval_ctx, deg_graph, deg_graph->layers);
}
/* Frame-change happened for root scene that graph belongs to. */
void DEG_evaluate_on_framechange(EvaluationContext *eval_ctx,
Main *bmain,
Depsgraph *graph,
float ctime,
const int layers)
{
DEG::Depsgraph *deg_graph = reinterpret_cast<DEG::Depsgraph *>(graph);
/* Update time on primary timesource. */
DEG::TimeSourceDepsNode *tsrc = deg_graph->find_time_source();
tsrc->cfra = ctime;
tsrc->tag_update(deg_graph);
DEG::deg_graph_flush_updates(bmain, deg_graph);
/* Perform recalculation updates. */
DEG::deg_evaluate_on_refresh(eval_ctx, deg_graph, layers);
}
bool DEG_needs_eval(Depsgraph *graph)
{
DEG::Depsgraph *deg_graph = reinterpret_cast<DEG::Depsgraph *>(graph);
return BLI_gset_size(deg_graph->entry_tags) != 0;
}