Blender Git Loki

Update Carve to latest upstream version

This brings new copyright header which supports GPL2 and 3.

It wasn't really an issue before because we had agreement with
Tobias, but now it's all documented in sources.

MSVC: quiet harmless linker warnings

Fix transparency issues in 3d viewport

The issue was introduced by 0f95149 and it only worked before
because default game material alpha blending was set to alpha.

Now it'll check whether material has transparency enabled and
will use alpha blending by default in this case.

Update Ceres to latest upstream version

Brings new bounds limiting and also prepares build system
for the changes in the upstream.

Namely shared_ptr header and namespace is now being detected
by a build system rather than by hacks in the code.

This commit includes some changes to auto-detection flags
in SCons, presumably adding more consistency there. This
is main changes which are suppoed to be reviewed here.

Reviewers: campbellbarton

Differential Revision: https://developer.blender.org/D581

Fix for DeviceScene::attributes_uchar4 not released properly

Reviewed by: dingto
Differential Revision: https://developer.blender.org/D620

Follow up to previous commit, do not calculate normal now with front
facing.

Fix T40758 Front facing not consistent in sculpt mode.

Some tools used view vector while others used the area normal.

Area Normal -is- useful and it will have to be incorporated to the
system better, but I'd like to do it in a way that is well
collaborating with sculpt plane calculation too, because it will have
to be slightly more expensive, i.e normal calculated before the plane,
never together, so only front to the area normal influence can be kept.

Currently sculpt plane takes into consideration view vector, but that
can produce an unwanted normal/plane at glancing angles on mesh edges.

Another issue that arises here is whether we do an actual calculation of
sculpt normal for each symmetry pass or we just flip the initial (former
is more expensive but more correct)

Fix T40823, crash with LoD operator without valid object.

Fix T40691, dyntopo changes lost on save if sculpting on multiple
objects.

Flush edits for all objects, not just the active one. Here we might want
to disallow leaving an object on sculpt mode when selecting another, but
this works, no need to enforce it.

Fix T40813: Dissolve verts with adjacent regions, removes the dividing edge

Fix T40816, SSS brightness difference with Sample All Direct Lights.

This has been fixed before, but somehow got reverted in d644753319b6.

Fix parallel CMake builds failing due to missing buildinfo.h

Reviewed in #blendercoders by ideasman42

BLI_array: avoid accidental assignment to BLI_array_count

Fix BLI_array_staticdeclare size

Fix for dissolve faces iterating over verts while removing

Another attempt to solve compilation error

Sorry for the noise, but it's tricky to troubleshoot stuff
which only happens on buildbot..

Tweak to previous commit, fixes scons to survive when upstream is not found

Fix compilation error with scons and older pythons

Forgot this in previous commit

Replace Main->lock with an anoynous structure pointer

This way it's not needed to include BLI_threads.h from the
BKE_main.h which helps avoiding adding PThreads includes to
each library which uses Main on Windows.

From the API point of view it's now MainLock* and to lock or
unlock the main you're to use BKE_main_(un)lock().

This solves compilation error on Windows with SCons.