Attributes are unifying around a name-based API, and we would like to
be able to move away from CustomData in the future. This patch moves
the identification of active and fallback (render) color attributes
to strings on the mesh from flags on CustomDataLayer. This also
removes some ugliness used to retrieve these attributes and maintain
the active status.
The design is described more here: T98366
The patch keeps forward compatibility working until 4.0 with
the same method as the mesh struct of array refactors (T95965).
The strings are allowed to not correspond to an attribute, to allow
setting the active/default attribute independently of actually filling
its data. When applying a modifier, if the strings don't match an
attribute, they will be removed.
The realize instances / join node and join operator take the names from
the first / active input mesh. While other heuristics may be helpful
(and could be a future improvement), just using the first is simple
and predictable.
Differential Revision: https://developer.blender.org/D15169
When the line was very thin the precision of the thickness
calculation was not precise enough.
The algorithm has been improved. This affects SVG and PDF.
On linux a man page is generated before the
scripts are installed, this lead to USD getting
a null pointer for it's pluging path and crashing
the process.
Make the `Object *` and `Mesh *` parameter of `USD_mesh_topology_changed()`
`const`. This function only inspects them, and doesn't need to modify
them.
No functional changes.
The executable would get boost python linking in when not needed, and even when
linking to Python libraries there were still unresolved symbols. Instead split
off boost python libraries and link them only where needed.
Shared libraries and USD plugins will be placed in the same folder, where USD
already looks for plugins.
This means that specifying the path to the plugins will no longer be needed
once the new libraries are available for all platforms. For now the code was
refactored to support both cases.
Ref T99618
Store the potentially owned mesh separately from the original/evaluated
mesh which is now stored with a const pointer. Also store mesh spans
separately in the class so they don't have to be retrieved for every
index.
You shouldn't be able to retrieve a mutable node from a const node tree
or a mutable socket from a const node. Use const_cast in one place in
order to correct this without duplicating the function, which is still
awkward in the C-API.
As part of T95966, this patch moves loose edge information out of the
flag on each edge and into a new lazily calculated cache in mesh
runtime data. The number of loose edges is also cached, so further
processing can be skipped completely when there are no loose edges.
Previously the `ME_LOOSEEDGE` flag was updated on a "best effort"
basis. In order to be sure that it was correct, you had to be sure
to call `BKE_mesh_calc_edges_loose` first. Now the loose edge tag
is always correct. It also doesn't have to be calculated eagerly
in various places like the screw modifier where the complexity
wasn't worth the theoretical performance benefit.
The patch also adds a function to eagerly set the number of loose
edges to zero to avoid building the cache. This is used by various
primitive nodes, with the goal of improving drawing performance.
This results in a few ms shaved off extracting draw data for some
large meshes in my tests.
In the Python API, `MeshEdge.is_loose` is no longer editable.
No built-in addons set the value anyway. The upside is that
addons can be sure the data is correct based on the mesh.
**Tests**
There is one test failure in the Python OBJ exporter: `export_obj_cube`
that happens because of existing incorrect versioning. Opening the
file in master, all the edges were set to "loose", which is fixed
by this patch.
Differential Revision: https://developer.blender.org/D16504
These were redundant for one of a few reasons:
- A call to `BKE_mesh_tag_coords_changed` was correct instead
- A mesh has dirty normals when created from scratch anyway
- The call was redundant with `BKE_mesh_runtime_clear_geometry`
The weird code dealing with `MeshPrimitive` didn't increment the
material indices pointer for geometry types besides triangle fans.
Also use a proper accessor to avoid adding a duplicate material
indices attribute, just in case this code is used on existing meshes.
Properly initialize clump curve mapping tables for duplis and other cases
where this was missed by making a generic init/free function instead of
duplicating the same logic in multiple places. Also fold lattice deform
init into this.
The new Xcode 14.1 brings the new Apple Clang compiler which
considers sprintf unsafe and geenrates deprecation warnings
suggesting to sue snprintf instead. This only happens for C++
code by default, and C code can still use sprintf without any
warning.
This changes does the following:
- Whenever is trivial replace sprintf() with BLI_snprintf.
- For all other cases use the newly introduced BLI_sprintf
which is a wrapper around sprintf() but without warning.
There is a discouragement note in the BLI_sprintf comment to
suggest use of BLI_snprintf when the size is known.
Differential Revision: https://developer.blender.org/D16410
The removed function call removes all attributes from mesh edges
and rebuilds the mesh edge topology. This isn't necessary because
meshes always have edges in the first place.
Exporting a 4 million face grid, this saved 1.5 seconds out of 4
seconds total for the whole export.
Tests files have to be updated, since the edge calculation could
potentially change the order of elements. This is also a fix, since
previously the exporter would delete all attributes on the evaluated
mesh edges.
Differential Revision: https://developer.blender.org/D16391
Currently there are both "EDGERENDER" and "EDGEDRAW" flags, which are
almost always used together. Both are runtime data and not exposed to
RNA, used to skip drawing some edges after the subdivision surface
modifier. The render flag is a relic of the Blender internal renderer.
This commit removes the render flag and replaces its uses with the
draw flag.
The goal is to improve clarity and readability, without
introducing big design changes.
Follows the recent obmat to object_to_world refactor: the
similar naming is used, and it is a run-time only rename,
meaning, there is no affect on .blend files.
This patch does not touch the redundant inversions. Those
can be removed in almost (if not all) cases, but it would
be the best to do it as a separate change.
Differential Revision: https://developer.blender.org/D16367
Updated the code to use the UsdGeomPrimvarsAPI class to read
and write mesh primvars instead of the now deprecated primvars
accessors in UsdGeomImageable. This will be required to build
with USD 22.11 in the future, where the deprecated functions
have been removed.
UsdImagingCapsuleAdapter static functions GetMeshPoints() and
GetTopology() have been removed in USD 22.11. In anticipation
of this upcoming change, I've updated the test code to call
the corresponding virtual functions instead.
Motivation is to disambiguate on the naming level what the matrix
actually means. It is very easy to understand the meaning backwards,
especially since in Python the name goes the opposite way (it is
called `world_matrix` in the Python API).
It is important to disambiguate the naming without making developers
to look into the comment in the header file (which is also not super
clear either). Additionally, more clear naming facilitates the unit
verification (or, in this case, space validation) when reading an
expression.
This patch calls the matrix `object_to_world` which makes it clear
from the local code what is it exactly going on. This is only done
on DNA level, and a lot of local variables still follow the old
naming.
A DNA rename is setup in a way that there is no change on the file
level, so there should be no regressions at all.
The possibility is to add `_matrix` or `_mat` suffix to the name
to make it explicit that it is a matrix. Although, not sure if it
really helps the readability, or is it something redundant.
Differential Revision: https://developer.blender.org/D16328
These functions are almost identical, the main difference being
BLI_join_dirfile didn't trim existing slashes when joining paths
however this isn't an important difference that warrants a separate
function.
Using varargs had the disadvantages, replace with a macro which has
some advantages.
- Arguments are type checked.
- Less verbose.
- Unintended NULL arguments would silently terminate joining paths.
- Passing in a NULL argument warns with GCC.
Part of T101073: after the view layer sync was made lazy (D15885), the
BKE_layer_collection_resync_forbid and BKE_layer_collection_resync_allow
in Alembic/USD/OBJ importers is no longer needed, as long as they do
view layer dependent operations (selecting new objects) in a separate
loop after creating all the objects.
Verified that this does not regress import times for 26k objects OBJ
scene (Blender 3.0 splash) and 250k objects USD scene (Moana).
Requested in D16095 proposal - also USD & Alembic have import scale
option; OBJ has an export scale object but the import scale
was not there for some reason.
The importer logic was wrongly resetting "current material name"
upon encountering a new object ("o" command). However as per OBJ
specification, this is incorrect:
> Specifies the material name for the element following it. Once a
> material is assigned, it cannot be turned off; it can only be
> changed.
Fixes T101685. Test coverage for this was added in svn tests repo.
This is the conventional way of dealing with unused arguments in C++,
since it works on all compilers.
Regex find and replace: `UNUSED\((\w+)\)` -> `/*$1*/`
The UV data filling logic was incorrectly just skipping over loop
entries that don't have a UV coordinate, instead of assigning
the default zero UV for them. This was a problem only for meshes
where some faces did have UVs, but some other faces did not (T101487).
