Blender Git Loki

Make BLI_edgehash_test compatible with C++17

random_shuffle was removed (at least the used version).

Ceres: Update to the latest upstream version

Using latest master because of various compilation error fixes.

Brings a lot of recent development. From most interesting parts:

- New threading model.
- Tiny solver.
- Compatibility with C++17.

Update C++ standard to C++14

This is an intermittent state to get all dependencies to compile.

For example, the latest Ceres is needed to bring C++17 support,
but it has bumped minimal requirement to C++14.

Cloth: allow forces to act parallel to cloth.

Currently all force effectors can only act on cloth when the force is
perpendicular to the surface. This makes sense for wind, but not for
other forces; and the user may want even wind to have some friction.

This changes effector code to output two force vectors - although
you of course can pass the same pointer for both. The force is split
between the two outputs based on a new per-effector setting.

Differential Revision: https://developer.blender.org/D8017

Fix T78024: GPencil - Add missing UV Fill prop to RNA

This was changed in the refactor done in 2.83 and was not included by error.

Alembic: always export transforms as inheriting

Blender now always exports transforms as as "inheriting", as Blender has
no concept of parenting without inheriting the transform.

Previously only objects with an actual parent were marked as
"inheriting", and parentless objects as "non-inheriting". However,
certain packages (for example USD's Alembic plugin) are incompatible
with non-inheriting transforms and will completely ignore such
transforms, placing all such objects at the world origin.

When importing non-inheriting transforms from Alembic, Blender will
break the parent-child relation and thus force the child to (correctly)
interpret the transform as world matrix.

Alembic: prevent spaces in names of exported particle systems

Other types already had spaces, periods, and colons replaced by
underscores. The upcoming Alembic exporter (based on the
`AbstractHierarcyIterator` class) will be more consistent and apply the
same naming rules everywhere. This is in preparation for that change.
The `get_?_name()` functions in `abc_util.{cc,h}` will be removed then.

Alembic: export object data with object data name

Previously the Alembic exporter exported a mesh object to
`{object.name}/{object.name}Shape`. Now it exports to
`{object.name}/{mesh.name}` instead. The same change also applies to
other object data types.

Note that the code now is a bit hackish, as `m_name` is set even in
cases where it isn't used. This hackishness was already there, though,
but it's now just more visible. This will all be cleaned up when the
Alembic exporter is ported to use the `AbstractHierarchyImporter`
structure of the Universal Scene Description (USD) exporter.

Reviewed By: mont29

Differential Revision: https://developer.blender.org/D7672

IO: ensure export path and export name are always consistent

Before this, there was one code path that set `context.export_path`, and
a different code path for `context.export_name`, allowing the two to
diverge.

Keeping track of the export path of the export parent (which can be, but
is not always, the Blender parent object) also allows a concrete
subclass of `AbstractHierarchyIterator` to find the `AbstractWriter` for
the export parent. In case of exporting to Alembic this is important, as
it's not possible to simply give the Alembic library the full export
path of an object like we do in the Universal Scene Description (USD)
exporter; Alembic needs the C++ object of the parent.

IO: Allow exporting a subset of the writers

This is in order to prepare for compatibility with the Alembic exporter.
That exporter is capable of writing object transforms and object data at
different (sub)frames.

The rename from `created_writers` to `used_writers` is necessary, as not
all created writers will be actually used in each iteration.

The Universal Scene Description (USD) exporter does not make use of
this.

Reviewed By: mont29

Differential Revision: https://developer.blender.org/D7670

IO: Move Abstract Hierarchy Iterator into `io/common`

The goal of the `AbstractHierarchyIterator` class (and supporting
classes) was to use it in different exporters. It shouldn't be part of
the USD module + namespace any more, now that it will also be used in
the upcoming Alembic exporter rewrite.

The source files are moved into `io/common`, which is compiled & linked
into a new library `bf_io_common`. The unittests are still inside the
`tests/gtests/usd` directory. They should be moved to a separate test
module too, but that will be delayed until after T73268 has been
resolved.

Reviewed By: mont29

Differential Revision: https://developer.blender.org/D7669

Fix T77997: GPencil insert keyframe on timeline doen't update viewport

The reason was the datablock is changed but it was not tagged for depsgraph refresh.

In some cases it could be possible to tag several times the same datablock, but as this is not the case all the times and the number of tags is always very small, it doesn't worth a complex code to keep a memory list of the datablocks to tag.

Writefile: move file flags to BlendFileWriteParams

This removes G_FILE_HISTORY, G_FILE_SAVE_COPY & G_FILE_USERPREFS.

Using file-flags made logic harder to follow since it's not so clear
which flags are expected to be in G.fileflags & which are meant to be
set and passed as arguments, these are shared between read & write
functions too.

Add BlendFileWriteParams so options which don't need to be stored
aren't mixed up with flags that are stored for reuse.

Cleanup: SPACE_ACTION does not have a RGB_TYPE_TOOL_HEADER

So no need to check this specific case.

Cleanup: use bool and enums in `match_region_with_redraws`

Function used int for everything.

Fix app-templates not resetting the user interface

Regression in 45b5f4e3dff75

Outliner: Show pose group icons

Pose groups previously showed a dot icon. Now it draws the correct icon.

Cleanup: use doxy sections

Cleanup commented separator.

Cleanup: unsupported ATTR_FALLTHROUGH use, clang-format