Blender Git Loki

Use spinlocks for tile initialization.

Fix for bokeh blur - missed during migration

More review points taken care of

Allignment

Renamed no_channels to num_channels

Merge remote-tracking branch 'blender-upstream/master' into blender-tiles

Updated modal Blend From Shape

Now can switch between Add Mode and Blend (Interp) Mode with MMB, cycle falloff types with O and cycle PE types with Shift-O

Extrude operator sticky key pie:

* Press once to extrude along normals
* Hold to spawn pie with options
* Removed the Alt-E shortcut.

Big commit. Manta included in Blender Python. NOT ALL modules imported

Add internal operator for enum pies supporting paths.

Used in proportinal editing in edit mode currently.

Also moved all macro definitions after python initialization to enable
referencing of python defined operators in all macros.

One more fix to make this compile on Linux.

Needed to change min -> min_ff, max -> max_ff.

Proper implementation of click style override:

Guide: This is added for double key combinations. In these situations,
holding the second key can be taxing and stretching for the hand.

Forcing a click style here is better. Ctrl-Tab for edit mode selection
uses this override currently.

Patch to fix some compilations problems.

Separate property for viewport shade pies.

This is fine tuned for using with pie menus, where solid/wire mode
is given the most important west/east positions.

There were two possibilities with supporting custom pie enums for an
existing property. One is to add an extra function that dynamically
fills the pie items to fit a pie scheme. The other is make a separate
python property. I feel this is the correct way because it does not
burden all enum properties with extra function storage and it does not
always need to be dynamic either.

Also cleanup minor debug line

Change enum behaviour:

Enums now get completely expanded and any items not present in a dynamic
enum are filled by separators. This makes it possible to have
predictable positions even if some items are missing.

The iteration code expects that the dynamic and initial enum lists have
the same ordering of items, which is not unreasonable.

Change user preference for drag/click style.

Use explicit chooser instead of timeout.

OpenSubdiv: Support multi-textured faces in a solid view

This means that if faces have different materials assigned to them
they'll be textured accordingly to a diffuse settings when viewing
them in solid shading mode.

It uses approach based on the pertitioned mesh from OpenSubdiv and
currently it creates partition for every single coarse face. This
might backfire in performance for a bit because it increases number
of glDrawElements() calls. But likely partitioning will stay like
this (to avoid re-partitioning when changing material settings)
and we'll just do some conjunction of partitions when actually
drawing faces into the viewport.

Currently it's like 20% speed loss, don't get too much disappointed
on this, it's to be addressed. Just a bit later. For now 1st prio is
to have all the shading/texturing bits in place.

OpenSubdiv: Disable normals hack for legacy drawing

Such a mix of GLSL and legacy drawing was rather a huge PITA
to experiment with the new functionality. Since this only
gives wrong shading with flat shading (which isn't so common
and only really visible with simple subdivisions which are
to be redone anyway) let's do a clear separation for now.

We might end up bumping GLSL requirement for GPU tessellation
because of the some specific of how UV attributes are handled
by the OpenSubdiv. This is to be evaluated later.

BRep import base

Dirty prototype for modal Blend From Shape with PE

Supports intepreting between keys for now. Move mouse L/R to adjust intensity and Up/Down to adjust PE falloff!