Blender Git Loki

Fix CUDA error when using tiny border in viewport

Need to clamp scaled render buffers window to be above zero
when applying resolution divider.

Fix crash on freeing hair system

Fix a crash when a hair system's `ParticleSettings` ID datablock was
linked from another file but couldn't be found. This results in default
settings, with `type = PART_EMITTER`, where the particle data still has
a non-NULL `hair` pointer. Previously, copies of such a particle system
would NOT copy hair data for non-hair particle systems, hence the
pointer of the copy pointed to the original data, which got freed (at
least) twice upon closing the blend file.

This is now fixed by always copying the hair data, regardless of the
particle system type.

Reviewed by: mont29

Differential Revision: https://developer.blender.org/D13245

Cleanup: document that `MEM_dupallocN` is NULL-safe

Add comment explaining `MEM_dupallocN` is NULL-safe, in that it returns
NULL when it receives a NULL pointer. This is currently true for both
implementations of the function (`MEM_lockfree_dupallocN` and
`MEM_guarded_dupallocN`), and will be expected of other implementations
as well.

No functional changes.

Asset Browser: hide catalog debug info behind debug option

Add a new "experimental" debug option `show_asset_debug_info`, and use
that to determine the visibility of the active asset's catalog UUID and
simple name. Previously this was only determined by the "Developer
Extras" option, which meant it was visible in too many situations. It's
not really a "developer extra", and really just a debugging tool, so the
new option is more in line with its purpose.

Reviewed by: Severin

Differential Revision: https://developer.blender.org/D13242

Version bump: 2.93.6-release

Merge branch 'master' into greasepencil-object

Merge branch 'master' into asset-greasepencil

Cycles: Adapt volumetric lambda functions to work on MSL

This patch adapts the existing volumetric read/write lambda functions for Metal. Lambda expressions are not supported on MSL, so two new macros `VOLUME_READ_LAMBDA` and `VOLUME_WRITE_LAMBDA` have been defined with a default implementation which, on Metal, is overridden to use inline function objects.

This patch also removes the last remaining mention of the now-unused `ccl_addr_space`.

Ref T92212

Reviewed By: leesonw

Maniphest Tasks: T92212

Differential Revision: https://developer.blender.org/D13234

Merge branch 'blender-v3.0-release'

UI: Fix hard to read text for drag disabled hints

In 499dbb626acb, the background color of drag tooltips were changed so
text becomes more readable. But multiple people were touching the same
code, so the disabled hint tooltips didn't get the same tweak. They
would benefit from them even more, since the red text is even harder to
read on the transparent background than the regular, white text.

Merge remote-tracking branch 'origin/blender-v3.0-release'

Tests: fix memory leak of GHOST system paths

Dispose of GHOST system paths when tearing down `BlendfileLoadingBaseTest`
and some other test cases. This prevents a memory leak.

A better solution would be to rework Blender's initialisation & teardown
structure, but that's outside the scope of this fix.

No functional changes to Blender.

Asset Browser: Forbid dragging catalogs into themselves

While there is nothing technically that would cause issues when moving a
catalog into itself (it just changes the path of the catalog, and the
missing parent catalogs will be created), it seems broken to the user.
So disable this in the drag & drop code for asset catalogs.

Asset Browser: use one more refresh operator

Refreshing the assets requires `file_OT_asset_library_refresh` in the
asset browser, and `asset_OT_list_refresh` for the asset view. Both
are now done from `ASSET_OT_open_containing_blend_file`.

Merge branch 'blender-v3.0-release'

Fix T90866: Python operator templates are not accessible from menus

Python Operator templates made accessible from respective menus
(required to also use F3 search for quick access)
Also fixed Modal Draw Operator id_name (had duplicate name from other template)

Maniphest Tasks: T90866

Differential Revision: https://developer.blender.org/D13182

Geometry Nodes: refactor virtual array system

Goals of this refactor:
* Simplify creating virtual arrays.
* Simplify passing virtual arrays around.
* Simplify converting between typed and generic virtual arrays.
* Reduce memory allocations.

As a quick reminder, a virtual arrays is a data structure that behaves like an
array (i.e. it can be accessed using an index). However, it may not actually
be stored as array internally. The two most important implementations
of virtual arrays are those that correspond to an actual plain array and those
that have the same value for every index. However, many more
implementations exist for various reasons (interfacing with legacy attributes,
unified iterator over all points in multiple splines, ...).

With this refactor the core types (`VArray`, `GVArray`, `VMutableArray` and
`GVMutableArray`) can be used like "normal values". They typically live
on the stack. Before, they were usually inside a `std::unique_ptr`. This makes
passing them around much easier. Creation of new virtual arrays is also
much simpler now due to some constructors. Memory allocations are
reduced by making use of small object optimization inside the core types.

Previously, `VArray` was a class with virtual methods that had to be overridden
to change the behavior of a the virtual array. Now,`VArray` has a fixed size
and has no virtual methods. Instead it contains a `VArrayImpl` that is
similar to the old `VArray`. `VArrayImpl` should rarely ever be used directly,
unless a new virtual array implementation is added.

To support the small object optimization for many `VArrayImpl` classes,
a new `blender::Any` type is added. It is similar to `std::any` with two
additional features. It has an adjustable inline buffer size and alignment.
The inline buffer size of `std::any` can't be relied on and is usually too
small for our use case here. Furthermore, `blender::Any` can store
additional user-defined type information without increasing the
stack size.

Differential Revision: https://developer.blender.org/D12986

Merge branch 'blender-v3.0-release'

Fix T93066: Alembic export ignores Mantaflow particles

`ABCPointsWriter::is_supported` already checked for valid particle
system types (liquid, spray, foam, bubbles, ...).

`AbstractHierarchyIterator::make_writers_particle_systems` did not
create a writer for these though, so now bring these in line and also
create writers for these.

Cleanup: Use C++ matrix identity constructor