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Depsgraph: Only invoke callbacks when there are changes 

Only affects when an evaluated dependency graph is requested via
context.

Makes it cheap to call when there are no changes made to the graph
This commit is contained in:
Sergey Sharybin 2019-05-28 15:52:26 +02:00
parent 0cf0cc9873
commit b683e965ab
3 changed files with 20 additions and 2 deletions
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1
source/blender/blenkernel/BKE_scene.h
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@ -148,6 +148,7 @@ int BKE_scene_orientation_slot_get_index(const struct TransformOrientationSlot *
/* ** Scene evaluation ** */
void BKE_scene_graph_update_tagged(struct Depsgraph *depsgraph, struct Main *bmain);
void BKE_scene_graph_evaluated_ensure(struct Depsgraph *depsgraph, struct Main *bmain);
void BKE_scene_graph_update_for_newframe(struct Depsgraph *depsgraph, struct Main *bmain);

2
source/blender/blenkernel/intern/context.c
View File

@ -1365,7 +1365,7 @@ Depsgraph *CTX_data_evaluated_depsgraph(const bContext *C)
{
Depsgraph *depsgraph = CTX_data_depsgraph(C);
Main *bmain = CTX_data_main(C);
BKE_scene_graph_update_tagged(depsgraph, bmain);
BKE_scene_graph_evaluated_ensure(depsgraph, bmain);
return depsgraph;
}

19
source/blender/blenkernel/intern/scene.c
View File

@ -1509,9 +1509,16 @@ static void prepare_mesh_for_viewport_render(Main *bmain, const ViewLayer *view_
/* TODO(sergey): This actually should become view_layer_graph or so.
* Same applies to update_for_newframe.
*
* If only_if_tagged is truth then the function will do nothing if the dependency graph is up
* to date already.
*/
void BKE_scene_graph_update_tagged(Depsgraph *depsgraph, Main *bmain)
static void scene_graph_update_tagged(Depsgraph *depsgraph, Main *bmain, bool only_if_tagged)
{
if (only_if_tagged && DEG_is_fully_evaluated(depsgraph)) {
return;
}
Scene *scene = DEG_get_input_scene(depsgraph);
ViewLayer *view_layer = DEG_get_input_view_layer(depsgraph);
@ -1548,6 +1555,16 @@ void BKE_scene_graph_update_tagged(Depsgraph *depsgraph, Main *bmain)
DEG_ids_clear_recalc(bmain, depsgraph);
}
void BKE_scene_graph_update_tagged(Depsgraph *depsgraph, Main *bmain)
{
scene_graph_update_tagged(depsgraph, bmain, false);
}
void BKE_scene_graph_evaluated_ensure(Depsgraph *depsgraph, Main *bmain)
{
scene_graph_update_tagged(depsgraph, bmain, true);
}
/* applies changes right away, does all sets too */
void BKE_scene_graph_update_for_newframe(Depsgraph *depsgraph, Main *bmain)
{