Blender Git Loki

Fix regression in grease pencil drawing

Drag events finished drawing early.

Workbench: UI for custom studio lights/matcaps

- all known image types are supported
- BpyAPI for studiolights added
- added open user pref operator in shading menu
- possible to add multiple files in a single run

For now refreshing studio lights will free all studiolights and reinit
the whole mechanism. This can be improved by only freeing deleted, reset
updated and add new custom studiolights.

details to show currently only shows the path we perhaps want to add
other information also

Keymap: continued testing/development (search key)

Use Accent/Grave for search, to be more convenient than F-Keys.

This sets F3 back to what it was before.

Merge branch 'master' into blender2.8

Fix T55301: Transform confirm on release fails w/ MMB

WM: backport event/keymap type util from 2.8

Merge branch 'master' into blender2.8

Cleanup: trailing space

Remove from blender/nodes, collada, blenfont & render.

Merge branch 'master' into blender2.8

Fix recently added drag events closing menus

Transform: fix non-3D view editmode assert

Keymap: continued testing/development

After testing in the studio and extending the event system for
drag events, we've agreed on adjustments to the new keymap,
see: T55162

- Tab: Edit-mode toggle.
- Tab + Cursor Drag: mode switching pie menu.
- Accent/Grave: for 3D view pie menu.
- F3: Search
- 1..3, Shift-1..3: Edit mesh vertex/edge/face toggle.

Other minor changes were made, however they aren't part of the design.

- Ctrl-Shift-S: Image editor Save-As (was F3)
- Ctrl-Alt-R: Repeat history (was F3)

Merge branch 'master' into blender2.8

WM: fix drag events applying after release

GHOST/X11: Xinput/XIM support caused double key-up

All keyboard events were sending double key events (including modifiers)
when xinput was enabled with gnome (causing much confusion!).

I cant test if XIM works,
but this isn't useful to send double events, so disabling for now.

Uniform Buffer Objects: Simplification refactor

Since we are only creating this and never updating, there is no need for
the original approach with the individual data to be updated.

Note we only populate the GPU data when binding the UBO, so we can in the
future easily create the UBOs in a separate thread than the main drawing one.

Also at the moment animated materials are not working. To fix that we need
to free/tag for free the GPUMaterials in BKE_material_eval.

Uniform Buffer Object: No more dirty tagging calls/check

Rename GPU_material_create_uniform_buffer > GPU_material_uniform_buffer_create

GLSL: No need to extract the UBO dynamic inputs

Don't tag UBO as dirty anymore otherwise it still crashes on render