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Refactor depsgraph/render logic to serve evaluated depsgraph to engines

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User notes
----------
Compositing, rendering of multi-layers in Eevee should be fully working now.

Development notes
-----------------
Up until now we were still using the same depsgraph for rendering and viewport
evaluation. And we had to go out of our ways to be sure the depsgraphs were
updated.

Now we iterate over the (to be rendered) view layers and create a depsgraph to
each one, fully evaluated and call the render engines (Cycles, Eevee, ...) with
this viewlayer/depsgraph/evaluation context.

At this time we are not handling data persistency, Depsgraph is created from
scratch prior to rendering each frame.  So I got rid of most of the partial
update calls we had during the render pipeline.

Cycles: Brecht Van Lommel did a patch to tackle some of the required Cycles
changes but this commit mark these changes as TODOs. Basically Cycles needs to
render one layer at a time.

Reviewers: sergey, brecht

Differential Revision: https://developer.blender.org/D3073
This commit is contained in:
Dalai Felinto
2018-02-20 12:55:02 -03:00
parent bd119ab017
commit 06420c5fe8
36 changed files with 310 additions and 357 deletions
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12
intern/cycles/blender/blender_python.cpp
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@@ -203,10 +203,10 @@ static PyObject *exit_func(PyObject * /*self*/, PyObject * /*args*/)
static PyObject *create_func(PyObject * /*self*/, PyObject *args)
{
PyObject *pyengine, *pyuserpref, *pydata, *pygraph, *pyscene, *pyregion, *pyv3d, *pyrv3d;
PyObject *pyengine, *pyuserpref, *pydata, *pyscene, *pyregion, *pyv3d, *pyrv3d;
int preview_osl;
if(!PyArg_ParseTuple(args, "OOOOOOOOi", &pyengine, &pyuserpref, &pydata, &pygraph, &pyscene,
if(!PyArg_ParseTuple(args, "OOOOOOOi", &pyengine, &pyuserpref, &pydata, &pyscene,
&pyregion, &pyv3d, &pyrv3d, &preview_osl))
{
return NULL;
@@ -225,10 +225,6 @@ static PyObject *create_func(PyObject * /*self*/, PyObject *args)
RNA_main_pointer_create((Main*)PyLong_AsVoidPtr(pydata), &dataptr);
BL::BlendData data(dataptr);
PointerRNA graphptr;
RNA_id_pointer_create((ID*)PyLong_AsVoidPtr(pygraph), &graphptr);
BL::Depsgraph graph(graphptr);
PointerRNA sceneptr;
RNA_id_pointer_create((ID*)PyLong_AsVoidPtr(pyscene), &sceneptr);
BL::Scene scene(sceneptr);
@@ -253,7 +249,7 @@ static PyObject *create_func(PyObject * /*self*/, PyObject *args)
int width = region.width();
int height = region.height();
session = new BlenderSession(engine, userpref, data, graph, scene, v3d, rv3d, width, height);
session = new BlenderSession(engine, userpref, data, scene, v3d, rv3d, width, height);
}
else {
/* override some settings for preview */
@@ -265,7 +261,7 @@ static PyObject *create_func(PyObject * /*self*/, PyObject *args)
}
/* offline session or preview render */
session = new BlenderSession(engine, userpref, data, graph, scene);
session = new BlenderSession(engine, userpref, data, scene);
}
python_thread_state_save(&session->python_thread_state);