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author | Kévin Dietrich <kevin.dietrich@mailoo.org> | 2021-08-19 15:34:01 +0300 |
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committer | Kévin Dietrich <kevin.dietrich@mailoo.org> | 2021-08-19 15:40:51 +0300 |
commit | 51862c8445c8d5f573d1c86780db9e0972ef14dd (patch) | |
tree | 5dbcf975fde4b4ef9a348b8695bcc5aa9a09abab /source/blender/editors/render | |
parent | 5b97c00e9fc4e1e5d6cdfa7130eab5aada0e068e (diff) |
Cycles: experimental integration of Alembic procedural in viewport rendering
This patch exposes the Cycles Alembic Procedural through the MeshSequenceCache
modifier in order to use and test it from Blender.
To enable it, one has to switch the render feature set to experimental and
activate the Procedural in the modifier. An Alembic Procedural is then
created for each CacheFile from Blender set to use the Procedural, and each
Blender object having a MeshSequenceCache modifier is added to list of objects
of the right procedural.
The procedural's parameters derive from the CacheFile's properties which are
already exposed in the UI through the modifier, although more Cycles specific
options might be added in the future.
As there is currently no cache controls and since we load all the data at the
beginning of the render session, the procedural is only available during
viewport renders at the moment. When an Alembic procedural is rendered, data
from the archive are not read on the Blender side.
If a Cycles render is not active and the CacheFile is set to use the Cycles Procedural,
bounding boxes are used to display the objects in the scene as a signal that the
objects are not processed by Blender anymore. This is standard in other DCCs.
However this does not reduce the memory usage from Blender as the Alembic data
was already loaded either during an import or during a .blend file read.
This is mostly a hack to test the Cycles Alembic procedural until we have a
better Blender side mechanism for letting renderers load their own geometry,
which will be based on import and export settings on Collections (T68933).
Ref T79174, D3089
Reviewed By: brecht, sybren
Maniphest Tasks: T79174
Differential Revision: https://developer.blender.org/D10197
Diffstat (limited to 'source/blender/editors/render')
-rw-r--r-- | source/blender/editors/render/render_update.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/source/blender/editors/render/render_update.c b/source/blender/editors/render/render_update.c index fb9d11feb63..6db148eb4e1 100644 --- a/source/blender/editors/render/render_update.c +++ b/source/blender/editors/render/render_update.c @@ -23,6 +23,7 @@ #include <stdlib.h> #include <string.h> +#include "DNA_cachefile_types.h" #include "DNA_light_types.h" #include "DNA_material_types.h" #include "DNA_node_types.h" @@ -204,6 +205,19 @@ void ED_render_engine_changed(Main *bmain, const bool update_scene_data) ntreeCompositUpdateRLayers(scene->nodetree); } } + + /* Update CacheFiles to ensure that procedurals are properly taken into account. */ + LISTBASE_FOREACH (CacheFile *, cachefile, &bmain->cachefiles) { + /* Only update cachefiles which are set to use a render procedural. We do not use + * BKE_cachefile_uses_render_procedural here as we need to update regardless of the current + * engine or its settings. */ + if (cachefile->use_render_procedural) { + DEG_id_tag_update(&cachefile->id, ID_RECALC_COPY_ON_WRITE); + /* Rebuild relations so that modifiers are reconnected to or disconnected from the cachefile. + */ + DEG_relations_tag_update(bmain); + } + } } void ED_render_view_layer_changed(Main *bmain, bScreen *screen) |