Blender Git Loki

Merge remote-tracking branch 'origin/blender2.8' into collada2.8

fix: Collada: remove not needed Context attribute from DocumentExporter

UI: show messages and progress in topbar when status bar is collapsed.

UI: show blocking popup when auto execution of scripts is disabled.

This is important information, and it was easily missed at the top/bottom of
the screen.

Ref T57197.

UI: support red alert on labels, not just buttons.

Fix T57559: fix wrong disable/mute icons for particles and shape keys.

Defaults: leave user prefs temp directory empty, so it gets right value per OS.

GP: Separate not related buttons on topbar

GP: Reorganize origin popover and top area

- Draw on back buttons moves near mode
- zDepth offset moved from View Panel to Popover
- Target for Stroke mode moved to popover
- New First point snap mode

UI: Rename "Cursor to Center" to "Cursor to World Origin"

Center is misleading since it could mean the center of the objects, selection, etc.
Python API is left as is to not break compatibility. Maybe it could be renamed as well?

UI: Rename Copy Material to Others to Copy Material to Selected.

"Others" is not clear, "selected" is more descriptive and it follows the convention used in similar operators

UI: Rename AO to Ambient Occlusion in tooltips and labels when possible.

Just tooltips and RNA labels when possible. Node outputs use their name to keep connections,
so they haven't been changed, otherwise it will break old files.

Subdiv: Cleanup, better naming yet again

Subdiv: Cleanup, de-duplicate some code

Subdiv: Cleanup, de-duplicate tangent matrix calculation

Subdiv: Cleanup. better naming

Subdiv: Cleanup, deduplicate some code

Eevee: Fix nodegroup sockets behaviour

Node group inputs should behave like cycles now.

----

We create dummy nodes that contains the default values for the nodegroup
inputs and link them to the sockets. This way the uniform buffer gathering
function can read them.

But we also need to disconnect all the internal links to sockets that have
hidden values. Theses sockets must not get the values from the nodegroup
input sockets if there is no link to them otherwise we get broken results
(i.e.: normals for a bsdf node).

Fix for object.set_select not updating selection in viewport

Note: This function changes the active object as well. Not sure it
should do.

Fix T57529: 2D image paint fill tool not taking into account alpha.