Blender Git Loki

Compositor: Full frame Rotate node

Adds full frame implementation to this node operation.
No functional changes.

Add support for vertex colors

Store the number of ptex faces at the end of Subdiv.ptex_face_offset

Compositor: Full frame ZCombine node

Adds full frame implementation to this node operations.
No functional changes.

Compositor: Full frame curve nodes

Adds full frame implementation to "RGB Curves",
"Vector Curves" and "Hue Correct" nodes.
No functional changes.

Compositor: Full frame Invert node

Adds full frame implementation to this node operation.
No functional changes.

Compositor: Full frame Math node

Adds full frame implementation to this node operations.
No functional changes.

Remove static variable usage. Increase extra images cached

VSE: Draw strips transparent during transform overlap

While transforming a strip, draw the background semi-transparent
if it overlaps with another strip. It's convenient to see what's
underneath, especially with the upcoming Overwrite feature.

Thanks to @iss for the help and review.

Knife: Moved 'D' modal key to 'S'

Currently D is used for visual distance and angle measurements but this may be more suited to distance snapping in the future.
Thefore, I am moving it to 'S' and freeing up 'D'.

Add `StringRef::trim()` functions

Add three functions that trim characters from the front & end of a
`StringRef`. All functions return a new `StringRef` that references a
sub-string of the original `StringRef`.

- `trim(chars_to_remove)`: strips all characters from the start and end
that occur in `chars_to_remove`.
- `trim(char_to_remove)`: same, but with a single character to remove.
- `trim()`: remove leading & trailing whitespace, so same as
`trim(" rnt")`

Reviewed By: JacquesLucke

Differential Revision: https://developer.blender.org/D12031

Deps: ensure osl/bin/oslc is using static libpng

Pass `-DLINKSTATIC=ON` to the OSL CMake, to ensure it statically links to
our libpng. Previously this was only applied on Windows, it's now on all
platforms.

USD import: validate light attributes

Added checks to validate light attributes
and values, to help avoid errors when reading
light settings which might not have been
authored.

Use darker lines, Change grid line spacing

Fix missing guiding pass for OIDN in Cycles X

Got lost in the previous memory optimization changes.

Fix LLVM 12 symbol conflict with Mesa drivers, after recent Linux libs update

Fix LibOverride crashing in some cases where reference linked data gets MIA.

When the root of an override hierarchy disapears, there is no way to do
a proper resync, just abort.

Reported by studio, thx.

VSE: Don't draw time grid lines

Add overlay option to disable grid drawing.
Reuse drawing code from other editors (timeline editor)
Add argument `display_minor_lines` to function `UI_view2d_draw_lines_x__discrete_frames_or_seconds`
This way minor line drawing can be disabled and so it doesn't cause too much visual noise.

{F10224091,size=full}

Differential Revision: https://developer.blender.org/D11790

Regression Testing: Running tests based on blend files

Runs tests based on blend files with minimum python interaction.
Developed as part of GSoC 2021 - Regression Testing of Geometry Nodes.
Earlier, tests were built from scratch by adding a modifier/operation
from the Python API.
Now, tests can also be created inside blender and are compared using
Python script.

Features: Automatically adding expected object if it doesn't exist.
This patch adds tests for the following Geometry Nodes category:
* Curves
* Geometry
* Mesh
* Points

The implemented UML diagram for refactoring of mesh test framework.
{F10225906}

Technical Changes:
SpecMeshTest: It adds the modifier/operation based on the Spec provided.
BlendFileTest: It applies already existing modifier/operation from the blend file.

Test folders hierarchy with tests. This folder should be extracted to `libtestsmodeling`
{F10240651}
Note: The `geometry_nodes` folder might lie under another `geometry_nodes` folder while extracting, please double check. Use the inner-most one.
The hierarchy should be:
-`libtestsmodelinggeometry_nodesmesh`
-`libtestsmodelinggeometry_nodespoints`
and so on.

* From `ctest` the tests should be run as `ctest -R geo_node -C [Configuration]` on Windows.
* Each single test can be run with its entire name e..g `ctest -R geo_node_geometry_join_geometry`.(just an example). Run `ctest -N -R geo_node` to see all tests.
* From blender, the tests can be run `blender -b pathtoblendfile --python pathtogeo_node_test.py`

Reviewed By: zazizizou, JacquesLucke

Differential Revision: https://developer.blender.org/D11611

initial support for noise node