Blender Git Loki

Cleanup: remove unused G_FLAG_BACKBUFSEL

3D View: use new buffer selection API's for paint vert/face select

Removes EDBM_backbuf use.

Fix missing assignments in object mode select id drawing

The code currently doesn't run, needed for upgrading all selection
code to use the new API's.

Fix error mixing old/new buffer selection API's

Missed from 4f6e25280558c, the second pass often wont run,
so the error didn't show up on basic tests.

Fix invalid face offset in DRW_draw_select_id_object

Fix error showing active tool side-bar in the image editor

Industry Compat keymap: Fix deselecting rings

Issue was caused by a keymap conflict

Fix T64832: Industry keymap - Pressing F to View Selected in Node Editor not working via hotkey

UI: Add back Sequencer sidebar toggles into the header

The properties inside are still hidden when the toggles are off, but we really should use greying out here instead.

That needs changes to DNA/RNA to work though.

Render: Use GHash for storing render parts

Previously, render parts were stored in a linked list and every tile update
searched the entire list for the correct part. As a result, the overhead
of searching tiles increased quadratically w.r.t. the number of tiles.

By hashing the parts based on their location, this operation is much faster,
significantly reducing the tile update overhead for small tiles and/or large
renders.

For example, rendering an empty scene in 1080p at 1spp and 8x8 tiles goes
down from 9.22sec to 1.45sec on my laptop.

Reviewers: brecht, sergey

Differential Revision: https://developer.blender.org/D4896

Fix build

Issue introduced on b7eba20236ca.

I'm surprised it compiled elsewhere, but in Linux at least this fix was
required.

UI: Edit Menu Operator Polling

This patch updates the polling that enable/disables Edit Menu items. Slight Undo History menu changes

Differential Revision: https://developer.blender.org/D4846

Reviewed by Brecht Van Lommel

Edit Mesh Select: Fix/update to new logic.

Fix T64720: Sequencer UI doesn't draw properly with some strip types

cleanup after rB86eefefdc1aae2a3ab4160770032671abf55aa30.

Reviewed By: brecht

Differential Revision: https://developer.blender.org/D4891

VSE: add movie strips on top of audio

- add movies to channel above free slot (no check for 2 free slots),
add sound to the free slot
- don't override channel settings if `channel` property is set

This is just a hack. Propper implementation should be done along with T59540

Reviewed By: brecht

Differential Revision: https://developer.blender.org/T59540

Fix T64579: Failure to honor anamorphic display

Restore stretching of sequencer preview removed in rB005626b8c6b4

Reviewed By: brecht

Differential Revision: https://developer.blender.org/D4879

UI: Icons update

A few icons were missed in the last update.

- Added dedicated icon for showing hidden objects in the Graph Editor
- Added new, more descriptive icon for F-Curve snapshots
- Tweaks for Toggle Full Screen and Collections icons

This should be the final set for 2.80.

Thanks to Andrzej Ambro? for contributing this icon set.

UI: expand more image editor scope panels by default

Better to show all information about the image at once, there is enough space
since they are in their own category.

UI: don't ask for confirmation to save or revert to saved preferences

UI: minor tweaks to image editor panels