Blender Git Loki

Merge branch 'master' into functions

Cleanup: Remove unused field

DRW: Fix Crash when enabling object wireframe option

Overlay: Remove extra contour drawing in wireframe mode

This removes the overhead of rendering the object one more time.

Fix T61373: Crash when selecting the edit mode

Some GPUs complain about `error C7011: implicit cast from "int" to "uint"` even if the cast is explicit.

Fix T61660: Wrong user counter on curves with shared material.

Patch by @sergey.

Note that this is really a bad thing actually, ideally we should never
get that situation (IDs in Main referencing temp IDs outside of it).
That can lead to many possible similar cases...

Fixing that is not trivial though, so for now we'll have to live with
it, until we have migrated *all* of our temp datablocks generation
outside of Main's.

ID management: forbid refcount of used IDs when user ID is outside of Main.

This is related to T61660, but actually does not fix that specific issue
(which is even worse - outside-of-Main ID using inside-of-Main IDs... yuck).

Cycles: Keep all hair strands

Previously, hair strands of zero length of too few control
points would have been ignored. This is fine for a render
without motion blur. But once motion blur is enabled it is
becoming more tricky to match topology.

Even more, it was causing access (and possibly writes) past
the array boundaries in case when time step 0 ignored some
strands and steps around it did not.

If this is becoming problematic for BVH to do reliable
intersections this is to be solved on the BVH builder side.
The export from Blender to Cycles shouldn't really make
decisions there.

Jpeg: Fix write past array boundary

Was happening when image buffer had cryptomatte pass, which can easily
exceed 530 bytes used by the buffer.

Now default buffer is bumped to 1K, and also allowed to be heap-allocated
when really need bigger buffer.

Possible optimization is to allocate buffer once, but in practice those
re-allocations will not happen often, so keeping code simpler is not an
issue. Just something for a rainy day.

fix SmallVector

Fix broken Cycles test build after recent commit.

Broken by rB4ce9785e0158, please do full complete build before
committing!

use allowed namespace definition syntax only

API doc: info_gotcha: extend description of issues related to memory changes.

* Added a TL;DR first paragraph summarizing that one shall not keep any
reference to Blender data when modifying its container.

* Added some info about fact that adding items to some data containers
(like Collection) can also invalidate existing items (due to array
re-allocation).

* Added a Do/Don't example which shows a crash after adding some items
to a collection.

Related to T61297.

Cleanup: API doc 'info_gotcha': typos.

Add Abkhaz language to Blender (disabled for until we get some translated content).

Fix T61666: missing NULL_UNIT that stops iteration over units

Edit Mesh: Cleanup

Sculpt Draw: Add support for wireframe geometry

This introduce the wireframe batches. Creating the indices buffer does
not seems to slow down the sculpt in my testing (but it is kind of hard to
test reliably)

This includes a bit of cleanup in gpu_buffers.c.

Wireframe: Add workaround for osx wide wires

Cleanup: Remove old wireframe batch cache code