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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
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Line endings are already added.
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Removed unused usd_reader_instance.cc and .h files.
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Support extracting identifiers RNA paths into fixed size buffer
since the maximum size of the identifier is known all cases.
- Add BLI_str_unescape_ex to support limiting the destination buffer.
- Add BLI_str_quoted_substr to copy values into a fixed size buffer.
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The storage of IDProperty UI data (min, max, default value, etc) is
quite complicated. For every property, retrieving a single one of these
values involves three string lookups. First for the "_RNA_UI" group
property, then another for a group with the property's name, then for
the data value name. Not only is this inefficient, it's hard to reason
about, unintuitive, and not at all self-explanatory.
This commit replaces that system with a UI data struct directly in the
IDProperty. If it's not used, the only cost is of a NULL pointer. Beyond
storing the description, name, and RNA subtype, derived structs are used
to store type specific UI data like min and max.
Note that this means that addons using (abusing) the `_RNA_UI` custom
property will have to be changed. A few places in the addons repository
will be changed after this commit with D9919.
**Before**
Before, first the _RNA_UI subgroup is retrieved the _RNA_UI group,
then the subgroup for the original property, then specific UI data
is accessed like any other IDProperty.
```
prop = rna_idprop_ui_prop_get(idproperties_owner, "prop_name", create=True)
prop["min"] = 1.0
```
**After**
After, the `id_properties_ui` function for RNA structs returns a python
object specifically for managing an IDProperty's UI data.
```
ui_data = idproperties_owner.id_properties_ui("prop_name")
ui_data.update(min=1.0)
```
In addition to `update`, there are now other functions:
- `as_dict`: Returns a dictionary of the property's UI data.
- `clear`: Removes the property's UI data.
- `update_from`: Copy UI data between properties,
even if they have different owners.
Differential Revision: https://developer.blender.org/D9697
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Also hyphenate 'mouse-move' use doxy sections in render_update.c &
move function comment from the header to the source.
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The current behavior of the Alembic importer is to only create a
`MeshSequenceCache` modifier or a `Transform Cache` constraint to imported
objects if they have some animated properties.
Since static objects do not have a cache reader, when reloading files those
objects are not updated. Currently, the only way to properly reload a file
because of this is to reimport it.
This adds an option to the importer to always add a cache reader, even if
there is no animated data, to ensure that all objects coming from Alembic
archive are linked to them and updated properly upon reloads.
Reviewed by: brecht, sybren
Ref D10197.
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Fixes: `Error: metersPerUnit does not match retrieved type float`
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Done at the request of Sergey.
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The library has some modifications and it has been included in a diff.
Reviewed By: campbellbarton
Differential Revision: https://developer.blender.org/D12142
(Some minor changes done in the patch)
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This corrects code that's currently disabled, see `USE_NURBS` define.
The name passed to `BKE_curve_add` was overwritten,
bypassing uniqueness and utf8 encoding checks.
Longer names would cause a buffer overrun as the length of the source
data was passed to `BLI_strncpy` instead of the destination.
Reviewed By: sybren
Ref D12125
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These were removed globally in 65ec7ec524e667ec95ce947a95f6273088dffee6.
Some files re-introduced these conventions since.
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Rename function parameter `flags` to `read_flag` in the declaration, to
be consistent with the definition.
No functional changes.
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This is an initial implementation of a USD importer.
This work is comprised of Tangent Animation's open source USD importer,
combined with features @makowalski had implemented.
The design is very similar to the approach taken in the Alembic
importer. The core functionality resides in a collection of "reader"
classes, each of which is responsible for converting an instance of a
USD prim to the corresponding Blender Object representation.
The flow of control for the conversion can be followed in the
`import_startjob()` and `import_endjob()` functions in `usd_capi.cc`.
The `USDStageReader` class is responsible for traversing the USD stage
and instantiating the appropriate readers.
Reviewed By: sybren, HooglyBoogly
Differential Revision: https://developer.blender.org/D10700
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After doing an import, the bounding box of the stroke was not calculated and any operation related to brushes (Sculpt, Weight Paint and Vertex Paint) was not working as expected because the bounding box of the stroke was wrong.
This problem was solved automatically after any edit operation, but must be solved in the import process.
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This shows the text as part of the assertion message.
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This commit moves the storage of `bDeformGroup` and the active index
to `Mesh`, `Lattice`, and `bGPdata` instead of `Object`. Utility
functions are added to allow easy access to the vertex groups given
an object or an ID.
As explained in T88951, the list of vertex group names is currently
stored separately per object, even though vertex group data is stored
on the geometry. This tends to complicate code and cause bugs,
especially as geometry is created procedurally and tied less closely
to an object.
The "Copy Vertex Groups to Linked" operator is removed, since they
are stored on the geometry anyway.
This patch leaves the object-level python API for vertex groups in
place. Creating a geometry-level RNA API can be a separate step;
the changes in this commit are invasive enough as it is.
Note that opening a file saved in 3.0 in an earlier version means
the vertex groups will not be available.
Differential Revision: https://developer.blender.org/D11689
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This option will determine visibility on either render or the viewport
visibility. Same for modifer settings. So it will either evaluate the
depsgrah with DAG_EVAL_RENDER or DAG_EVAL_VIEWPORT.
This not only makes it more flexible, it is also a lot
clearer which visibility / modfier setting is taken into account (up
until now, this was always considered to be DAG_EVAL_RENDER)
This option was always present in the USD exporter, this just brings
Alembic in line with that.
ref. T89594
Maniphest Tasks: T89594
Differential Revision: https://developer.blender.org/D11820
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When introduced in {rB61050f75b13e} this was actually working (meaning
it checked the Outliner OB_RESTRICT_RENDER flag and skipped the object if
desired).
Behavior has since then been commented in rBae6e9401abb7 and apparently
refactored out in rB2917df21adc8.
If checked, it seemed to be working (objects marked non-renderable in
the Outliner were pruned from the export), however unchecking that
option did not include them in the export.
Now it changed - for the worse if you like - in rBa95f86359673 which
made it so if "Renderable Objects" only is checked, it will still export
objects invisible in renders. So since we now have the non-functional
option with a broken/misleading default, it is better to just remove it
entirely.
In fact it has been superseeded by the "Visible Objects" option (this
does the same thing: depsgraph is evaluated in render mode) and as a
second step (and to make this even clearer) a choice whether
Render or Viewport evaluation is used can be added (just like the USD
exporter has). When that choice is explicit, it's also clear which
visibility actually matters.
This is breaking API usage, should be in release notes.
ref. T89594
Maniphest Tasks: T89594
Differential Revision: https://developer.blender.org/D11808
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Also use doxy style function reference `#` prefix chars when
referencing identifiers.
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When exporting a PDF, the image was displaced towards top right a few pixels.
Also removed is_orthographic variable because is not needed now.
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Add check for the `arbGeomParams` property being valid, before attempting
to access a sub-property from it.
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This adds support for importing UV sets which are defined per vertex,
instead of per face corners. Such UV sets can be generated when the
mesh is split according to UV islands, or when there is only one UV
island, in which cases only a single UV value can be stored per
vertex since vertices will never be on a seam.
Reviewed By: sybren
Differential Revision: https://developer.blender.org/D11584
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Note that these changes are limited simple cases as these kinds of
changes could allow for errors when refactoring code when the known
state is not so obvious.
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The camera was not checked before doing the export.
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This fix is ported from official NanoSVG git
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Read and write generated coordinates (also known as "original
coordinates", "reference coordinates", or "orcos") from and to Alembic.
A custom geometry property named "Pref" is used for (hopefully)
interoperability with Maya and Houdini. For now it's only guaranteed for
Blender-to-Blender.
Export: writing generated coordinates is optional (on by default).
Import: generated coordinates are always read whenever the reading of
vertex data is enabled.
Manifest Task: T88081
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Treat a missing <diffuse> the same as a black diffuse color.
The easiest way to see this bug is with a Collada shader like
```
<constant>
<emission>
<color sid="emission">1 0 0 1</color>
</emission>
</constant>
```
The Collada spec says this should be just
```
color = <emission>
```
ie. red everywhere. The importer slots the red into the Principled Emission socket, but since it leaves the Base Color as the default off-white, this is added to red, and the material looks white-pink in the light and red only in the shadows.
Putting black in the Base Color makes it look red everywhere.
D10939 will also eliminate the much-less-noticeable specular term for this case.
Reviewed By: gaiaclary
Differential Revision: https://developer.blender.org/D10941
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- rename boolean is_zero by more descriptive has_specularity
- add some clarifying comments (and TODO)
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