Blender Git Loki

Make knife drawing anti aliased (Monkey work based on D11333)

Knife tool.

Make the drawing anti aliased and consistent by using
3D_POLYLINE/3D_POINT shaders, and making sure alpha
blending is on.

Monkey work based on [[ https://developer.blender.org/D11333 | D11333 ]]
done by [[ https://developer.blender.org/p/krash/ | Anthony Edlin (krash)]]

Reviewed By: jbakker

Differential Revision: https://developer.blender.org/D12287

Cycles: merge of cycles-x branch, a major update to the renderer

This includes much improved GPU rendering performance, viewport interactivity,
new shadow catcher, revamped sampling settings, subsurface scattering anisotropy,
new GPU volume sampling, improved PMJ sampling pattern, and more.

Some features have also been removed or changed, breaking backwards compatibility.
Including the removal of the OpenCL backend, for which alternatives are under
development.

Release notes and code docs:
https://wiki.blender.org/wiki/Reference/Release_Notes/3.0/Cycles
https://wiki.blender.org/wiki/Source/Render/Cycles

Credits:
* Sergey Sharybin
* Brecht Van Lommel
* Patrick Mours (OptiX backend)
* Christophe Hery (subsurface scattering anisotropy)
* William Leeson (PMJ sampling pattern)
* Alaska (various fixes and tweaks)
* Thomas Dinges (various fixes)

For the full commit history, see the cycles-x branch. This squashes together
all the changes since intermediate changes would often fail building or tests.

Ref T87839, T87837, T87836
Fixes T90734, T89353, T80267, T80267, T77185, T69800

Fix script_load_keymap failure from c9d9bfa84ad5cb985e3feccffa702b2f3cc2adf8

Scanning the keymap hierarchy (used in the preferences),
caused the test to fail.

Don't attempt add fallback keymaps for dynamic keymap callbacks.

Cleanup: Silence unused variable warning

VSE: Image transform tools

Add tools for image manipulation in sequencer preview region.

This includes:
- Translate, rotate and resize operators, tools and gizmos
- Origin for image transformation
- Median point and individual origins pivot modes
- Select and Box select operator works in preview
- Image overlay drawing

ref T90156

Reviewed By: campbellbarton

Differential Revision: https://developer.blender.org/D12105

VSE strip thumbnails

Draw thumbnails as strip overlay. This works for movie and image strips.
To draw thumbnails, this overlay has to be enabled and strips must be
tall enough.

The thumbnails are loaded from source file using separate thread and
stored in cache.

Drawing code uses only images stored in cache, and if any is missing,
background rendering job is started. If job can not render thumbnail,
to prevent endless loop of creating job for missing image it sets
`SEQ_FLAG_SKIP_THUMBNAILS` bit of `Sequence` flag.

To prevent visual glitches during timeline panning and zooming, `View2D`
flag `V2D_IS_NAVIGATING` is implemented. If bit is set, drawing code
will look for set of evenly distributed thumbnails that should be
guaranteed to exist and also set of previously displayed thumbnails.
Due to volatile nature of cache these thumbnails can be missing anyway,
in which case no new thumbnails will be drawn for particular strip.

Cache capacity is limited to 5000 thumbnails and performs cleanup of
non visible images when limit is reached.

ref T89143

Reviewed By: ISS

Differential Revision: https://developer.blender.org/D12266

LibOverride: make `view_layer` API parameter optional.

This is used to find a valid collection in which to instantiate stray
objects and collections.

In some cases there will be no such active view layer, in which case we
can consider using the Scene's master collections children hierarchy
instead to find a valid instantiated parent collection for those stray
data.

Keymap: preference for keys to set the active tool

With "Keys Activate Tools" preference enabled, keys such as G/R/S
activate the move/rotate/scale tool instead of the modal operator.

Addresses T83692.

Keymap: preference for Alt-LMB to use the active tool

With the LMB select key-map some tools required clicking on a gizmo.
With this preference it's possible to hold Alt and click anywhere.

Addresses T83689.

Keymap: preference for fallback-tool with RMB select

Expose a key-map preference "Fallback Tool (RMB)",
disabled by default.

The right mouse button uses the fallback tool
(currently visible selection tool in the toolbar),
instead of always tweaking.

When any selection tool is active, right mouse always tweaks.

To enable fallback selection on RMB, set the "Right Mouse Select Action"
to "Selection Tool".

Internal changes:

- Add fall-back key-maps, separate key-maps needed for when the tool is
run as a fall-back. This is needed so RMB-select can support fall-back
tools, so left-mouse can be used when it's the active tool and RMB
can be used as a fall-back action when another tool is active.
- Add options field to tools so tools without gizmos can enable the
full-back tool keymap.
- Support multiple key-maps for keymap handlers.
- Fall-back keymaps now co-exist with the tool-keymaps.
So both keymaps may be active at once - using different mouse buttons.
When gizmos are in use, a highlighted gizmo prioritizes the
tool-keymap over the fall-back keymap.

Resolves T83690.

Reviewed By: JulienKaspar

Ref D12493

WM: only return PASS_THROUGH on PRESS for selection operators

Some selection operators return (PASS_THROUGH & FINISHED) so the tweak
event isn't suppressed from the PRESS event having been handled.

This is now restricted to events with a PRESS action.
Without this, using CLICK for selection was passing the event through
which could run other actions unintentionally.

Cleanup: Remove debugging change, add comments

Geometry Nodes: Curve Sample Node

This node allows sampling positions, tangents, and normals at any
arbitrary point along a curve. The curve can include multiple splines,
all are taken into account. The node does not yet support transferring
generic attributes like radius, because some more general tooling will
make that much more feasible and useful in different scenarios.

This is a field node, so it is evaluated in the context of a data-flow
node like "Set Position". One nice thing about that is it can easily
be used to move an entire geometry like the follow path constraint.

The point along the curve is chosen either with a factor of the total
length of the curve, or a length into the curve, the same choice used
in the curve trim node.

Differential Revision: https://developer.blender.org/D12565

Functions: Fix incorrect assert for unused output

Since the variable for an output parameter can be null,
it is incorrect to use it later on in a reference.

Fix: Crash with single point bezier spline auto handles

There's no way to calculate auto or vector handles when there is
only one point, and returning early allows avoiding checking for
that case later on.

Geometry Nodes: Attribute Statistic Node

This nodes evaluates a field on a geometry and outputs various
statistics about the entire data set, like min, max, or even
the standard deviation. It works for float and vector types currently,
though more types could be supported in the future.

- All statistics are calculated element-wise for vectors.
- "Product" was not added since the result could very easily overflow.
- The "Size" output was not added since it isn't specific to an
attribute and would fit better in another node.

The implementation shares work as much as possible when multiple
statistics are needed.

This node has been in development since the beginning of this year,
with additions from Johnny Matthews and Hans Goudey.

Differential Revision: https://developer.blender.org/D10202

Asset Browser: Redraw sidebars on mode switches

There may be mode specific panels for some assets in the navigation or
the asset metadata sidebar. For example the pose library will likely do
this. So let the regions redraw on mode changes.

Update RNA to user manual url mappings

Tests: measure time per frame in animation performance benchmark

Instead of a fixed number of frames, so that benchmarking takes about the
same time on any machine.

Geometry Nodes: use implicit position input in noise node

This is the same behavior as in shader nodes.