Blender Git Loki

Fix build error with WITH_XR_OPENXR disabled

Fix compile errors and wrong pointer use

Enable fixed world space lighting by default

Also make the button for it optional in the UI (the VR Add-on will hide
it for now).

Fix crash when closing Blender with active VR session

On Windows I still get a crash in some Windows library inside the exit()
call, even though Blender shuts just fine. Not sure where that's coming
from.

Cleanup: Improve naming of session state queries

Fix multiple issues when closing session from OpenXR runtime

We only managed Ghost-XR data then, not Blender side data. E.g. if there
was a VR mirror, its 3D View would remain locked then (disallowing
navigation).

Cleanup: Change misleading name

Refactor runtime data storage, for OpenXR side session ending

Right now, ending the session via the OpenXR runtime (e.g. closing the
WinMR Portal while the Blender VR session runs) causes multiple issues.
We need a way to properly react to session end events. Changes here
prepare us for that.

Fix crash with some 3D View operators (e.g. Zoom to Border)

Would do a NULL-ptr dereference if the VR mirror option is enabled.

Fix VR mirror not redrawing continuously on some systems

Void pointers....

Mistake in 3bc41d2f50d2.

Fix broken Positional Tracking toggle behavior

Probably broken since c18d50320556.

Fix mistake in earlier commit

Misstake in 3b693a9aacc6.

Fix compile error and warning with WITH_XR_OPENXR disabled

Fix memory errors and drawing glitches on some systems

Fix warning on MSVC

Use preview quality settings for Eevee in VR, not high-quality ones

The high-quality settings are designed for actual renderings. We use the
same offscreen routines as these, but want the preview quality for
performance.

Brings performance from < 1FPS to ~40FPS in the classroom scene here.

Force continuous redraws of mirrored 3D Views

Refactor sharing of 3D View Shading layout

Fix division-by-zero on session start with VR mirror enabled

Remove unnecessary code, forgot to remove earlier