Blender Git Loki

Sequencer: Fix box select using incorrect rectangles for sequences

Reviewer: ISS

Differential Revision: https://developer.blender.org/D4968

Fix T58251: Cycles ignores linked meshes when rendering

The idea is to share a mesh data-block as a result across all objects
which are sharing same original mesh and have no effective modifiers.
This mesh is owned by an original copy-on-written version of object data.

Tricky part is to make sure it is only initialized once, and currently a
silly mutex lock is used. In practice it only locks if the mesh is not
already there.

As an extra bonus, even viewport memory is also lower after this change.

Reviewers: brecht, mont29

Reviewed By: brecht, mont29

Differential Revision: https://developer.blender.org/D4954

Keymap: Add back support for Set/Add/Subtract for box selecting in the Sequencer.

UI: use matching distance checks & define for dragging

Correct error in last commit

Correct error in last commit

Keymap: add drag-only generic gizmo keymap

Allows gizmos clicks to fall through for gizmos which only drag,
currently unused.

Fix T65027: Snap 3D cursor on hidden faces doesn't work in Edit Mode.

I'm not very fond of adding new types of bvhtrees.
But this is probably the most efficient solution.

Fix T65005: Missing "LINES_ADJ" and "TRIS_ADJ" in the GPU Python API.

Possible fix for T63685: macOS edit mode selection not working on second display

The idea is to force `glReadPixel` to run in the offscreen context.
And don't rely on any rendering context.

Cleanup: move gizmo keymap access into funcitons

Existing functions were written to match the setup_keymap callback.
Add versions that can be called with the window manager for convenience.

Cleanup: remove redundant sequencer under cursor check

Cleanup: correct private function naming

Use term 'glyph' instead of 'icon' since we already have event icons.

Cleanup: Remove Dead Code

Fix T65244: emission node not available for world shader nodes

Fix T65175: nodetree animation stays linked after duplicating a lamp

Reviewers: mont29, brecht

Maniphest Tasks: T65175

Differential Revision: https://developer.blender.org/D4956

Fix T64123 Eevee: Reflections Not Visible On Alpha Clip Materials

Eevee: Fix assert when displaying transparent film checker

Eevee: Change default shadowmap near clipping distance

And also fix some RNA props defaults and ranges.

Fix T64452 Shadows not appearing in eevee

Eevee: Render alpha blended objects when rendering probes

This fix T64553 EEVEE: Emission material not lighting
other objects when blend mode set to alpha blend