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This commit replaces the `Mesh_Runtime` struct embedded in `Mesh`
with `blender::bke::MeshRuntime`. This has quite a few benefits:
- It's possible to use C++ types like `std::mutex`, `Array`,
`BitVector`, etc. more easily
- Meshes saved in files are slightly smaller
- Copying and writing meshes is a bit more obvious without
clearing of runtime data, etc.
The first is by far the most important. It will allows us to avoid a
bunch of manual memory management boilerplate that is error-prone and
annoying. It should also simplify future CoW improvements for runtime
data.
This patch doesn't change anything besides changing `mesh.runtime.data`
to `mesh.runtime->data`. The cleanups above will happen separately.
Differential Revision: https://developer.blender.org/D16180
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The stroke could be tagged before modifier and was removed due the tag.
Now, the tag is reset before to avoid this problem.
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The flicker was caused by the failure for checking both triangles for
flags. Now fixed.
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This patch adds 5th mode to Time offset modifier, which should allow
to create time segments list.
This will allow users to chain together multiple time ranges in 4 modes:
- Forward
- Backwards
- Pingpong
- Reverse Pingpong
It also comes with additional Repeat parameter which specifies number
of times particular segment should run.
The mechanic of it is transforming initial parameters into array of frames which
are mapped to existing cfra (current frame) value.
Prototype : https://jsfiddle.net/ha2sjw8p/3/
This is also closely aligned to community request:
https://blender.community/c/rightclickselect/Txhbbc/
This should allow creation of complex animations like dancing,
which consists of repeating loops and transitions to the next.
One important side effect of this is dramatically reduced
file sizes, as user no longer needs to copy paste keyframes.
Reviewed By: antoniov, mendio, pepeland
Differential Revision: https://developer.blender.org/D15052
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This modifier converts any stroke (no fill strokes) into perimeter
from camera view. Also, it's possible to define an alternative
material for the outline.
There is an option to include a target object to manipulate the start
point of the strokes. The start point will be the nearest point
to the target object.
Reviewed By: mendio, frogstomp
Maniphest Tasks: T100826
Differential Revision: https://developer.blender.org/D15882
Note: Icon will be updated in T101155
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To use function style cast '(unsigned char)x' can't be replaced by
'unsigned char(x)'.
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This makes it easier to pass more parameters to the iterator in the future.
Differential Revision: https://developer.blender.org/D16047
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While both are supported, 'arg' is in more common use so prefer it.
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This option allows easier setup of intersection overrides on more
complex scene structures. Setting force intersection would allow objects
to always produce intersection lines even against no-intersection ones.
Reviewed By: Aleš Jelovčan (frogstomp) Antonio Vazquez (antoniov)
Differential Revision: https://developer.blender.org/D15978
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Disambiguate:
- Lower / Upper (case)
- Spray (ocean modifier)
- Keep Original (clip, grease pencil, object)
- Screen [space] (inside some enum items, mostly)
- Cast Shadow ("shadow that is cast", not "to cast a shadow")
Extract:
- Line Art Light Reference Near and Far
- Mesh vertex attribute domain: Vertex
Reviewed By: mont29
Differential Revision: https://developer.blender.org/D15938
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Use `verts` instead of `vertices` and `polys` instead of `polygons`
in the API added in 05952aa94d33eeb50. This aligns better with
existing naming where the shorter names are much more common.
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For copy-on-write, we want to share attribute arrays between meshes
where possible. Mutable pointers like `Mesh.mvert` make that difficult
by making ownership vague. They also make code more complex by adding
redundancy.
The simplest solution is just removing them and retrieving layers from
`CustomData` as needed. Similar changes have already been applied to
curves and point clouds (e9f82d3dc7ee, 410a6efb747f). Removing use of
the pointers generally makes code more obvious and more reusable.
Mesh data is now accessed with a C++ API (`Mesh::edges()` or
`Mesh::edges_for_write()`), and a C API (`BKE_mesh_edges(mesh)`).
The CoW changes this commit makes possible are described in T95845
and T95842, and started in D14139 and D14140. The change also simplifies
the ongoing mesh struct-of-array refactors from T95965.
**RNA/Python Access Performance**
Theoretically, accessing mesh elements with the RNA API may become
slower, since the layer needs to be found on every random access.
However, overhead is already high enough that this doesn't make a
noticible differenc, and performance is actually improved in some
cases. Random access can be up to 10% faster, but other situations
might be a bit slower. Generally using `foreach_get/set` are the best
way to improve performance. See the differential revision for more
discussion about Python performance.
Cycles has been updated to use raw pointers and the internal Blender
mesh types, mostly because there is no sense in having this overhead
when it's already compiled with Blender. In my tests this roughly
halves the Cycles mesh creation time (0.19s to 0.10s for a 1 million
face grid).
Differential Revision: https://developer.blender.org/D15488
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This patch moves material indices from the mesh `MPoly` struct to a
generic integer attribute. The builtin material index was already
exposed in geometry nodes, but this makes it a "proper" attribute
accessible with Python and visible in the "Attributes" panel.
The goals of the refactor are code simplification and memory and
performance improvements, mainly because the attribute doesn't have
to be stored and processed if there are no materials. However, until
4.0, material indices will still be read and written in the old
format, meaning there may be a temporary increase in memory usage.
Further notes:
* Completely removing the `MPoly.mat_nr` after 4.0 may require
changes to DNA or introducing a new `MPoly` type.
* Geometry nodes regression tests didn't look at material indices,
so the change reveals a bug in the realize instances node that I fixed.
* Access to material indices from the RNA `MeshPolygon` type is slower
with this patch. The `material_index` attribute can be used instead.
* Cycles is changed to read from the attribute instead.
* BMesh isn't changed in this patch. Theoretically it could be though,
to save 2 bytes per face when less than two materials are used.
* Eventually we could use a 16 bit integer attribute type instead.
Ref T95967
Differential Revision: https://developer.blender.org/D15675
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Line art now uses global index for vertices but needs to have
local index in order to do correct weight transfer.
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Materials can be changed by other evaluations like geometry nodes,
now handles that kind of situation.
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In this case the array allocation would allocate an array of size zero.
This would then later lead to out of bounds memory reads.
Now the code will skip zero length allocations.
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Conflicts:
source/blender/blenkernel/BKE_lib_override.h
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The use of `float` for intermediate intersection record led to some
inaccuracy which caused flickering in intersection lines. Now fixed.
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This patch removes the [rather confusing] separate checkbox for enclosed
shapes in favour of integrating that option into illumination filtering,
with the benefit of not limiting the selection to cached result.
Reviewed By: Sebastian Parborg (zeddb)
Differential Revision: https://developer.blender.org/D15327
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After recent refactors to mesh normals (cfa53e0fbeed), they are no
longer stored in CustomData. A mechanism to compute them eagerly
should be implemented another way.
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The name was confusing to a level that it sounded like the relation
goes the opposite direction than it is intended.
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Contributed by luzpaz.
Differential Revision: https://developer.blender.org/D15588
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Pretty much like D15418: add `N_()` macro around names for
Grease Pencil modifiers and shader FX.
Reviewed By: mont29
Differential Revision: https://developer.blender.org/D15532
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All callers passed `false` for this parameter, making it more confusing
than useful. If this functionality is needed again in the future, a separate
function should be added.
Differential Revision: https://developer.blender.org/D15401
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The problem was the new generated strokes were copied from original and the location was offset to mirror, but the internal geometry data was not updated and the collision check done by brushes was not working.
Now, the internal geometry data is recalculated when the modifier is applied.
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Two main fixes:
- Split tiles only when we are more sure that it will improve distribution.
- Discard edges and chains that are not gonna be used afterwards before chaining.
This speeds up the whole process and also eliminates unnecessary tile splitting.
Reviewed By: Sebastian Parborg (zeddb)
Differential Revision: https://developer.blender.org/D15335
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Removes the following macros for scene/render frame values:
- `CFRA`
- `SUBFRA`
- `SFRA`
- `EFRA`
These macros don't add much, other than saving a few characters when typing.
It's not immediately clear what they refer to, they just hide what they
actually access. Just be explicit and clear about that.
Plus these macros gave read and write access to the variables, so eyesores like
this would be done (eyesore because it looks like assigning to a constant):
```
CFRA = some_frame_nbr;
```
Reviewed By: sergey
Differential Revision: https://developer.blender.org/D15311
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