diff options
author | Brecht Van Lommel <brecht> | 2021-09-09 18:22:20 +0300 |
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committer | Brecht Van Lommel <brecht@blender.org> | 2021-09-10 17:48:30 +0300 |
commit | 128eb6cbe928e58dfee1c64f340fd8d663134c26 (patch) | |
tree | 68c510ccb7bc3b60af06462392ec46da5baf53a6 /source/blender/blenkernel/intern/modifier.c | |
parent | 42215d7cb8797ba5b631b9df93d07e895c4b1dda (diff) |
Modifiers: export motion blur velocity through attribute
Previously fluid simulation and Alembic modifiers had a dedicated function
to query the velocity for motion blur. Now use a more generic system where
those modifiers output a velocity attribute.
Advantages:
* Geometry and particle nodes can output velocity through the same mechanism,
or read the attribute coming from earlier modifiers.
* The velocity can be preserved through modifiers like subdivision surface or
auto smooth.
* USD and Alembic previously only output velocity from fluid simulation, now
they work with velocity from other sources too.
* Simplifies the code for renderers like Cycles and exporters like
Alembic and USD.
This breaks compatibility:
* External renderers and exporters accessing these velocities through the
Python API now need to use the attribute instead.
* Existing modifier node setups that create an attribute named "velocity"
will render differently with motion blur.
Differential Revision: https://developer.blender.org/D12305
Diffstat (limited to 'source/blender/blenkernel/intern/modifier.c')
-rw-r--r-- | source/blender/blenkernel/intern/modifier.c | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/source/blender/blenkernel/intern/modifier.c b/source/blender/blenkernel/intern/modifier.c index b328a31cda5..b55b02c7bf2 100644 --- a/source/blender/blenkernel/intern/modifier.c +++ b/source/blender/blenkernel/intern/modifier.c @@ -1473,7 +1473,6 @@ void BKE_modifier_blend_read_data(BlendDataReader *reader, ListBase *lb, Object fmd->domain->tex_velocity_y = NULL; fmd->domain->tex_velocity_z = NULL; fmd->domain->tex_wt = NULL; - fmd->domain->mesh_velocities = NULL; BLO_read_data_address(reader, &fmd->domain->coba); BLO_read_data_address(reader, &fmd->domain->effector_weights); |