Blender Git Loki

Fix T75694: Compositor Backdrop boundbox missing updates

This adds notifiers for backimage_move & backimage_fit.

Maniphest Tasks: T75694

Differential Revision: https://developer.blender.org/D7778

Merge branch 'blender-v2.83-release'

Fluid: Cleanup unused variables

GPencil: Make is_nofill_stroke property editable

This can be used by some add-ons.

Fix T76541: OpenGl Depth Picking not selecting frontmost object

The issue was that we used GL_ALWAYS for depth checking here which would
lead to the depth information from objects being messed up.

It would not represent which object was closest to the camera.

Reviewed By: Cl�ment Foucault, Jeroen Bakker, Campbell Barton

Differential Revision: https://developer.blender.org/D7710

Fix T76717: Set Rotation Mode Incorrectly Recalculates Bone Rotation In Pose Mode

The issue was that we didn't convert the current rotational values.
We simply just switched mode without doing any data conversions.

Fix Frame Dropping not dropping the correct amount of frames

Previously the playback mode "Frame Dropping" would not drop the correct
number of frames which would lead to slow playback.

For example, the playback target is 60fps. However we can only muster
around 32 fps.

The delta frames from the last step is in this case ~1.98 or so.

With the previous code, we would floor this. That would lead us to step
forward one frame each time, effectively playing back the animation at
half the speed as we will try to render every frame.

To fix this we simply save the remaining fraction from the previous
frame and use it to compute the current frame step.

Reviewed By: Sybren

Differential Revision: https://developer.blender.org/D7694

Made pose push/relax to breakdown behave smooth on rotations

A follow up to T67212. I missed that the rotation interpolation had its
own code path.

The previous rotation push code was actually wrong (but smooth).

Now all of the actions behave correctly and is smoothly interpolated.

Fix T72729: Mask Modifier Loose Edges Not Shown

When using the mask modifier loose edges could be added to the mesh.
These edges weren't marked as loose edges and wasn't picked up by other
areas of blender.

This fix recalculates the loose edges so they have the correct flag
`ME_LOOSE_EDGE`.

Reviewed By: Sybren St�vel

Differential Revision: https://developer.blender.org/D7766

Fix T76865: Vertex paint draws hidden but cannot be painted onto

CMake: Enable WITH_USD by default

Having USD disabled by default was an oversight, and could have been
corrected earlier. It's already enabled by default in the
`blender_release.cmake` and `blender_full.cmake`.

Fix T76689: Armature layers not indicating the existence of bones

From what I can see, there are two issues at play in {T76689} and its merged-in report {T76590}:

- In Blender ? 2.79 the bone layer dots were updated in the draw code. This ensured the info was up to date before drawing. This is no longer possible, as the drawing code uses evaluated objects, and those should not be written to. This has been addressed in rB709f126e8143 by calling the update function explicitly in various places in the code. The problem is that this wasn't added to all necessary spots.
- When in edit mode, changes are made to the edit bones but not to the 'actual' bones (this is synced when exiting edit mode). This causes undo to mess up the layer indicators.

I think both issues can be addressed by having the dependency graph update the used layer info as part of the armature evaluation. This will make the undo system work properly, and allows the removal of some `BKE_armature_refresh_layer_used()` from various places.

There is still the issue that there are two functions (`BKE_armature_refresh_layer_used()` and `ED_armature_edit_refresh_layer_used()`) that are both responsible for updating `bArmature::layer_used`. This is a trickier thing to solve, though, as the definition of the `EditBone` struct resides in the armature editor module. This means that blenkernel can't iterate over edit bones, but on the other hand the dependency graph shouldn't call any editor functions either. This is why I left the `ED_armature_edit_refresh_layer_used()` calls untouched.

The downside of recalculating `layer_used` from the dependency graph (at least in the way that I did it now) is that it is called every time a user moves a bone in pose mode. This frequency of updates is not necessary.

Differential Revision: https://developer.blender.org/D7709

Fix T76780: Freestyle pass for one scene not accessible in compositor in other scenes

Current implementation would update the nodetree of the freestyle scene not the composite scene.

Reviewed By: Dalai Felinto

Differential Revision: https://developer.blender.org/D7770

Fix T73169: Side by Side Stereo Rendering Glitches

Side by side and top down views were rendered using an unset matrix.
This fix will reset the matrix just before copying the views to the
screen.

Reviewed By: Cl�ment Foucault, Dalai Felinto

Differential Revision: https://developer.blender.org/D7777

Cleanup: Creator Args Spelling

Differential Revision: https://developer.blender.org/D7735

Fix T76821: Generalize Use Flow Tooltip

Merge branch 'blender-v2.83-release'

Merge branch 'blender-v2.83-release'

Fix switching to particle edit-mode from editmode

Similar to T76859

Fix T76859: Cannot switch from editmode to texturepaint mode

Caused by 5159b8e1eadb.