Blender Git Loki

Cleanup: improve internal function name in 'ngon_tessellate'

WM: add use_factory_startup option to read homefile operator

There was no way to reset the current file to factory settings
without reloading the preferences (which disables & re-enables add-ons),
this slows down resetting files and can complicate tests.

UI: add back Layout.introspect

Add back this function, removed 2e14b7fb9770b.

Useful for checking operators used in menus.

UI: simplify tool-tip logic for operators

- Use WM_operatortype_description to get the operator description.
- Pass properties to WM_operatortype_name,
so the operator name callback is used.
- Add UI_but_operatortype_get_from_enum_menu function
to access the operator from enum menus.
- Change WM_operatortype_description to return NULL when there is no
description, use WM_operatortype_description_or_name
when either can be used.

Fix crash accessing image space properties without an active window

Cleanup: spelling, rename attachement -> attachment

Cleanup: spelling

UI: Remove unecessary panel_free_block function

This function was called when the modifier list changes and the panel
list has to be rebuilt. Originally I thought it was necessary to to remove
the block immediately when the panel was removed, but we can just
leave it and it will be removed later in the UI drawing process.

Removing this results in fewer string lookups.

Cleanup: Reduce indentation level and variable scope

Exit early in some functions to reduce indentation level, declare
variables where they are initialized, and also clean up some
comment formatting.

Cycles: Separate Embree device for each CPU Device.

Before, Cycles was using a shared Embree device across all instances.
This could result in crashes when viewport rendering and material
preview were using Cycles simultaneously.

Fixes issue T80042

Maniphest Tasks: T80042

Differential Revision: https://developer.blender.org/D8772

Fix T80233: Extrude manifold can generate invalid geometry

Faces with only 2 sides were sometimes generated.

Fix Cycles build error when disabling some kernel features

Differential Revision: https://developer.blender.org/D8372

Fix T80031: UI: Use a more specific label for stencil mask opacity

This is not the opacity of the vertex colors itself but of the stencil
mask.

Follows up on rBbb4478f2fdd8426d6050bf7b7c09611afeb1bd14

Cleanup: GLFrameBuffer: Reduce indentation

GLFramebuffer: Avoid calling method on a partially destroyed GLContext

This avoid an ASAN runtime error.

Audaspace: port compilation fix from upstream.

Fix T79553: StretchTo constraint: Apply Pose changes bone length

Recompute Rest Length stored in the StretchTo constraint after applying
the current pose as rest pose.

The "Apply Pose as Rest Pose" operator applies the evaluated pose as
rest pose, which means that the change in bone length from the StretchTo
constraint is applied to the rest pose. The bug was caused by the fact
that the StretchTo constraint wasn't updated for the new pose, and thus
still applied the same scale factor to the new pose, effectively
doubling its effect.

The "Apply Pose as Rest Pose" operator now forces a recompute of the
rest length cached in the StretchTo constraint data. As a result, the
length of the bone before and after the pose is applied remains the
same. The X and Z scale (perpendicular to the bone length) are reset to
1.0, as with the applied pose the bone isn't stretched or squashed any
more.

USD: remove library initialisation hack

Remove the hack for library initialisation; this is no longer necessary
as the required information can be passed to the USD library after its
static initialisers have run.

This new approach is compatible with both the patched and original USD
library. This means that platform maintainers don't need to rebuild the
USD library until the next upgrade.

Manifest Task: https://developer.blender.org/T80320

USD: move library initialisation from `main()` to USD module

Initialize the USD library when used (instead of at startup), so that
this can happen inside the IO/USD module. This makes calls to the USD
library local to Blender's USD code.

Note that failure to find the USD JSON files will now only be reported
when the USD exporter is used, and not on every startup of Blender.

This is the first step in cleaning up the way Blender patches and
initialises the USD library.

Manifest Task: https://developer.blender.org/T80320

GPUOffscreen: Remove scissor and viewport state tracking

This was a workaround that is not needed anymore.

Fix FT80321 Cropped output with Viewport Render Animation