Blender Git Loki

Cleanup: Use DRW_shgroup_uniform_vec4_copy

new group nodes

initial group input node

bring back Clamp and Map Range nodes

initial Closest Point on Object node

Merge branch 'temp-openxr-ghostxr' into temp-openxr-blenderside

Merge branch 'temp-openxr-directx' into temp-openxr-ghostxr

Merge branch 'temp-openxr-buildstuff' into temp-openxr-directx

Merge branch 'master' into temp-openxr-buildstuff

Core XR Support [part 1]: Add OpenXR-SDK dependency and WITH_OPENXR build option

Some points on the OpenXR-SDK dependency:
* The repository is located at https://github.com/KhronosGroup/OpenXR-SDK (Apache 2).
* We use the OpenXR loader lib from it, the headers, and some CMake utilities.
* It contains a bunch of generated files, for which the sources are in a separate repository.
* To use the injected OpenXR API-layers from the SDK (e.g. API validation layers), the SDK needs to be compiled from this other repository.
* We could use that other repo by default, but I'd rather go with the simpler solution and allow people to opt in if they want advanced dev features.
* For Windows a patch is needed to link the CRT in a compatible way.

All this is entirely untested on macOS.

Maniphest Tasks: T71365

Differential Revision: https://developer.blender.org/D6188

Make Particle Info node a normal function

Merge branch 'master' into undo-experiments

Merge remote-tracking branch 'origin/master' into temp-graph-select-changes

Merge branch 'temp-graph-select-changes' of git.blender.org:blender into temp-graph-select-changes

pass MFContext directly

pass MFParams directly

pass MFMask directly

Merge branch 'master' into greasepencil-object

LANPR: Removed chaining thresholds from when using LANPR engine.

The value is only effective in grease pencil conversion.

Cleanup: float value format in rna_scene.c