Blender Git Loki

Merge branch 'blender-v2.93-release'

RigidBodies: Clarify usage of the custom density in the calculate mass
operator

This is only used when the preset is set to 'Custom', make that clear in
the tooltip and disable editing the value if another preset is used.

Issue came up in T88155.

Maniphest Tasks: T88155

Differential Revision: https://developer.blender.org/D11210

Merge branch 'blender-v2.93-release'

Fix T88188: Keyframing Vertex Mass in Cloth Simulation doesn't have any
effect

The way it is now, `ClothVertex->mass` is setup once for the clothObject
and then reused if it already exists [so does not change across frames/
steps] which happens in`cloth_from_object` / `do_init_cloth`, where
`SIM_cloth_solver_init` / `SIM_mass_spring_set_vertex_mass` are called
and set up masses in `Implicit_Data`.

Seems possible to update `ClothVertex->mass` every step in
`do_step_cloth`, however it seems more involved to update the masses in
`Implicit_Data` there as well. The masses from `Implicit_Data` are
accessed in many places, so it would be mandatory to have these masses
kept up-to-date (and even then it is unclear if the solver was designed
to work with these animated or if there are assumptions about this being
stable across the sim).

So propose to remove the (broken/not implemented) animation capabilities
on the property instead.

Maniphest Tasks: T88188

Differential Revision: https://developer.blender.org/D11225

Merge branch 'blender-v2.93-release'

Fix T87715: Eevee: Holdout options not available in Outliner Collection context menu

Collection holdouts are now supported by eevee.

Maniphest Tasks: T87715

Differential Revision: https://developer.blender.org/D11233

Cleanup: Update / improve comments

Docs: PyAPI: Replace use of the bgl module in the RenderEngine example

The bgl module will be discontinued.

This example is seen at:
https://docs.blender.org/api/current/bpy.types.RenderEngine.html uses it.

Differential Revision: https://developer.blender.org/D11262

Cleanup: Move attribute code to attribute header

This code in the geometry set header was not directly related to
geometry sets, it makes more sense in the attribute access header.
This makes it clearer that code for geometry components uses attribute
code, rather than the other way around. It also allows adding more
functionality to `BKE_attribute_access.hh` that depends on these things
without including `BKE_geometry_set.hh` there.

Fix T88262: Curve to mesh crash with vector last segment

The code incorrectly used the size of the second to last segment rather
than the last segment's size. That was a problem when the last segment
is a vector segment but the second to last isn't.

I also used the opportunity to slightly refactor the control point
offsets cache, making it one longer so it also contains information
about the size of the last segment, simplifying other code.

Merge branch 'blender-v2.93-release'

Fix T88234: Crash with Eevee when shader displacement socket connection is muted

In {rB266cd7bb82ce}, support for muting links was added. It might be
debatable if we define a shader as "having" displacement even if the link
is muted, but after said commit, shader_has_displacement() would return
true but still leave the returned node as NULL.

Now also return false if the link is muted (otherwise the caller would
need to additionally check the returned node as well.)

Maniphest Tasks: T88234

Differential Revision: https://developer.blender.org/D11256

Merge branch 'blender-v2.93-release'

Conflicts:
source/blender/editors/object/object_add.c

GPencil: Refactor Append operators

Now the operators work like other areas of Blender using the list of selected objects.

Also, the name has been changed to:

```Layers:
- Copy Layer to Selected
- Copy All Layers to Selected

Materials:
- Copy Material to Selected
- Copy All Materials to Selected```

Reviewed By: mendio, pablovazquez, pepeland

Differential Revision: https://developer.blender.org/D11216

CLOG: Fix memleak in own recent improvement to CLOG filter.

Mistake in rBef5782e29744.

Python GPU: New 'capabilities' module

This module exposes the capabilities defined in the GPU module in C.

This will be useful for porting existing code in `bgl` to `gpu`.

Reviewed By: fclem, brecht, campbellbarton

Maniphest Tasks: T80730

Part of D11147

Python GPU: New 'platform' module

This module exposes the platform utils defined in the GPU module in C.

This will be useful for porting existing code with `bgl` to `gpu`.

Reviewed By: fclem, brecht, campbellbarton

Maniphest Tasks: T80730

Part of D11147

Python GPU: Replace part of the code that uses 'bgl' with 'gpu'

This is part of the process described in T80730.

The aim is to deprecate the bgl module.

Reviewed By: fclem, brecht, campbellbarton

Revision: D11147

GPencil: fix separate points/strokes freezing with empty selection

Code would still create an object (without setting up materials), code
for removing unused material slots would then freeze.

Now return/cancel early in case of empty selection.

This came up in T88269 [which is still not fully fixed, transforming
curve edit points clear their GP_STROKE_SELECT flag which now results in
the early exit, should be looked at separately]

Maniphest Tasks: T88269

Differential Revision: https://developer.blender.org/D11252

Cleanup: use enum types for screen direction variables

The term direction was used in 3 different ways in screen editing code,
making it hard to follow:

- 0-3 for as magic numbers mapped to [west,north,east,south].
- `h`, `v` characters for [horizontal,vertical] axes.
- Cycle direction SPACE_CONTEXT_CYCLE_PREV, SPACE_CONTEXT_CYCLE_NEXT

The following changes have been made:

- Add `eScreenDir` for [west,north,east,south], use variable name `dir`.
- Add `eScreenAxis` for [horizontal,vertical] values, use variable name
`dir_axis`.
- Add `eScreenCycle` for existing enum `SPACE_CONTEXT_CYCLE_{PREV/NEXT}`.
- Add macros `SCREEN_DIR_IS_VERTICAL(dir)`,
`SCREEN_DIR_IS_HORIZONTAL(dir)`.
Replacing `ELEM(dir, 1, 3)`, `ELEM(dir, 0, 2)`.
- Move `ED_screen_draw_join_highlight`, `ED_screen_draw_split_preview`
to `screen_intern.h`.

Reviewed By: Severin

Ref D11245