Blender Git Loki

bli: generational_arena: add iterator support

Made as a bidirectional iterator since movement can be in both
directions. Random access iterator is not possible since there can be
gaps in between the elements.

Had a very annoying bug- using the iterator with the standard library
would throw an error "`iterator_category` not defined" even though it
was defined. Spent a lot of time to realize that `difference_type`
should also be defined but other types within the iterator class are
optional. For some reason the compiler does not create the
`iterator_trait` correctly if `difference_type` is missing but throws
error about `iterator_category` which is extremely strange and time consuming to debug :(

GPencil: Fix wrong enum list after merge

GPencil: Fix merge errors

Merge branch 'master' into temp-gpencil-camera-reproject

Conflicts:
source/blender/editors/gpencil/gpencil_utils.c

USDStageReader::prune_by_visibility() refactor.

Per suggestion by Sybren in his review, flipped the samanitcs
for prune_by_visibility() to return true=include and false=exclude.
Also simplified the conditional logic to reduce nesting.

Merge branch 'master' into greasepencil-object

Fix T89306: GPencil selection doesn't work correctly with modifiers

The problem was introduced with Bezier modification because the selection code was using the original stroke and not the evaluated version.

Fix T89271: Selecting all vertices doesn't select all edges.

Mistake in recent commit {rBea4309925f1d2d2a224bd1dce12269a58ade9b62}.

Cleanup: swap top/bottom args to planes_from_projmat

X & Z were ordered min/max, where as Y was max/min.

Cleanup: pass objects as const arguments

Fix T32214: Wireframe edge select fails with verts behind the view

This resolves a long standing bug in edge selection
(picking, circle, box & lasso).

Now when one of the edges vertices fails to project into screen space,
the edge is clipped by the viewport to calculate an on-screen location
that can be used instead.

This isn't default as it may be important for the on the screen location
not to be clipped by the viewport.

Cleanup: variable naming in view3d_iterators

Consistently use a/b instead of 0/1.

Cleanup: use doxy sections in view3d iterators

Fix T89329: icosphere subdivisions can be set to 0

Differential Revision: https://developer.blender.org/D11658

Fix T89122: crash when multi input is connected to multiple group inputs

The early `return` was wrong when there are multiple origin sockets
that need to be loaded.

Add a reason for why an Addon can not be loaded. This change gives a more detailed explanation of the issue and may help the Addon Developer to identify what exactly needs to be changed.

The current message 'addon not loaded' is a bit too sparse.

Differential Revision: https://developer.blender.org/D11655

Cleanup: move function parameter to member

Get current pass only when needed.

Cleanup: improve naming in Compositor

Cleanup: make BKE_mesh_loops_to_tessdata a static function

Cleanup: use eSpace_Type enum type