Blender Git Loki

Fluid: Refactored the Mantaflow <-> Blender pointer exchange function and switched to from NULL to nullptr in cpp files

Docs: describe vertex dirt method

GPencil. Tag datablock when In Front property is changed

GPencil: Add support for Object In Front option

Still need a small change in RNA to tag datablock when property is changed.

Merge remote-tracking branch 'origin/blender-v2.82-release'

Fix T72459: Mask Modifier breaks Vertex Parenting

The `give_parvert()` function was only considering the mesh's original
vertex indices when the parent vertex index was valid for the evaluated
mesh. However, when using the Mask modifier the evaluated mesh can have
less vertices but still have the parent vertex.

Since the `if (nr < numVertex)` condition wasn't used to prevent any
out-of-bounds access, and seems just an incorrect optimisation, it could
be removed.

libs/windows: Prevent USD exports from leaking into blender binary.

Even though we build USD as static, it still feels the need to mark its
symbols with declspec(dllexport) which means the blender binary now exports
these symbols.

this patch fixes that unwanted behaviour, however USD libs still need to
rebuild before this becomes visible in the blender binary

Differential Revision: https://developer.blender.org/D6563

Reviewed By: sybren

Fix: Building with clang on windows.

The USD landing broke building with clang on windows
due to a couple of reasons:

1) Some incompatibilities in their headers [1] only one
of them was important for us and is included in our patchset
now.

2) clangs lld wanted the full path to the libusd_b library
when using the whole archive link option, while msvc can
figure it out from just the library name.

Tested with clang/msvc and msbuild and ninja generators

[1] https://github.com/PixarAnimationStudios/USD/issues/1030

Merge branch 'blender-v2.82-release'

Docs: describe turn-table gimble lock mitigation

Fix T73297: Incorrect lock properties tooltip

Fix T73233: Image Editor Color Picker Crash

When using the color picker on a image editor it tries to read the color
from the original image. When there is no original image the code
crashes during the determination of the UDIM tile number.

There are 2 approaches to solve this.
1. Modify `BKE_image_get_tile_from_pos` to support NULL pointers.
2. Modify `ED_space_image_color_sample` with an early exit.

This patch modifies `ED_space_image_color_sample` with an early exit.

Reviewed By: brecht

Differential Revision: https://developer.blender.org/D6629

Fix T71810: Flipping Sidebar with tabs breaks alignment

Panel alignment was only updated when panel size changed. Now we can
also recognize changes in the category tabs offset and tag panels
for alignment updates.

GPencil: Implement Fade 3D objects

GPencil: Implement grease pencil object fade

GPencil: Rename gpencil_paper to fade_objects

The name was not clear now because is not a "paper" in front of the 3d meshes as it was done in old system.

Merge branch 'blender-v2.82-release'

Merge remote-tracking branch 'origin/blender-v2.82-release'

Fix T73295: Incorrect BMesh volume calculation

Use double precision since volume calculation is susceptible
to float precision errors.

Fix T72216 Copied Particles not refreshing in the viewport

The depsgraph was not tagged for relations update after the copy, which
means it was incomplete and thus didn't update the copied particle sim.