Blender Git Loki

Nodes: show node labels (like image name) in material properties node view.

Armature: Add a special Pass for bone axes.

In object mode, the axes are drawn like any other wire objects with
depth test and depth write. Thus enabling MSAA to work but not their xray
behaviour.

In edit armature/pose mode, draw smooth line without depth testing. This
produces wrong draw ordering problem but still gives the desired xray
behaviour. We do it outside of the MSAA pass since the xray behaviour is not
compatible with it. But we are drawing smoothed lines so no need for MSAA.
The lines are 2px thick and improve readability.

Armature: Fix bone axes not using bone color.

Armature: Put passes in a struct easier to pass around.

DRW: Add DRW_STATE_WIRE_SMOOTH to draw smooth wires.

This is only useful if depth test/wire is disabled.

Armature: Fix/Change bone axes display.

Now the axes are displayed correctly at the tip of the bone and with the
axes names.

I've made some modifications though:
- Axes are colored. (should not be in object mode but that's TODO)
- Axes ends are not flat arrows anymore. Replaced with a small diamond.
- Axes names are now scale by their respective axes instead of being
affected by other axes.
- Changed axes names "font" to be a bit more sexy.

Merge branch 'master' into blender2.8

Cleanup: split rotation_from_view

Add a function that takes only a quat, instead of the 3D view.

Allows for using non-view orientations.

Fix update for manipulator w/ 3D cursor change

Cleanup: transform manipulator filename

Use matching 2d/3d suffix.

Correct extrude poll function

Workbench: if no material is available, use color 0.8 like default material.

Fix use of removed Blender Internal property.

Fix issue with hidden headers after previous commit.

Merge branch 'master' into blender2.8

Object Snap: add object & matrix to view ray cast

Some snap functions already exposed this.

UI: region overlap now works for headers as well.

This is for the 3D viewport and image editor. A remaining issue is
that pulldown menu buttons only show text, which is not visible on
all background colors, so making the header entirely transparent
does not work well at the moment.

Edit-mesh: multi-object reveal

Edit-mesh: multi-object hide

Edit-mesh: multi-object delete edge loops