Blender Git Loki

Cleanup: stop using DerivedMesh in mesh cache modifier.

Fix T55587: bugs with popovers in collapsed menus, like the timeline header.

UI: tweak drawing of header status text for transparent headers.

Multires: Initial groundwork to hook up displacement to new Subdiv object

Adds a displacement support for OpenSubdiov based subsurf object implemented
as a callback which gives vector displacement in object space. Currently is
implemented to calculate displacement based on myltires displacement grids,
but we can support things in the future if needed.

Submitting to review to see if there is something obviously wrong in the
direction (old multires code was sharing same displacement code to both
calculate final displaced mesh and reshape an existing one, which is rather
confusing and probably can be done more cleanly?).

Reviewers: brecht

Reviewed By: brecht

Differential Revision: https://developer.blender.org/D3604

Clip Reconstruction: Cleanup - use const for selection synchronize

In order to avoid the discard qualifier warning I had to change a few extra
things.

Skip bundle names when drawing selection pass

Fix border select operations in object mode

UI: correct selection operation names

Fix viewport selection of markers not updating in all editors

This includes selections both in the clip editor as the viewport.
The selection is implemented as a synchronization function called from the eval
selection update node in depsgraph.

Motion Tracking Reconstruction Viewport Drawing (T51544)

* Draw bundle names.
* Draw bundle shapes (but spheres).
* Draw custom colors for bundles.
* Support selecting bundles.
* Object bundles also fully tested.

Missing from this commit:
* Camera path.
* Spheres are not drawn as solid.
* Blue dashed line from camera to tracker objects.

Subdiv: Cleanup, dead code

Subdiv: Fix memory leak interpolating CD_MDISP

Can not copy data without freeing the previous storage.

UI: adjust names for select operations

Merge branch 'master' into blender2.8

Fixes enum-flags having no text w/ property-split

Cleanup: set expand variable for all enum-flags

No functional change, needed for fix in 2.8x

Icons: regenerate from 'icons_geom.blend'

Regenerating all to remove zero area triangles.

Previously icons included files not committed to lib/.
This is the output of 'make icons_geom' for svn rev: 62081.

Icons: geometry now checks quantized area

Previously back-facing normal was checked which isn't ideal
because a triangle that starts out zero-area may become
visible once it's coordinates are quantized.

Fix T56359: Unitialized variable in Cycles OpenCL could cause crashes.

GPUShader: Remove some of the unused shaders

keeping GPU_SHADER_SMOKE until other occurences are removed.

GHOST: Make win32 errors more readable on some drivers