Blender Git Loki

Fix two issues related to 'partial' .blend files:

I) Filename was not put in temp Main generated to save selected data only,
this was breaking readcode when trying to open partial file, leading to missing
filename in final loaded Main data.

II) Read code would confuse partial .blend files with Undo ones, when they had no screen in them
(which happens to 99.999% of partial .blend files I guess).

Reported by @sybren, thanks.

Should be safe enough for 2.78 release.

Fix compilation error: Shadowing of variable

2.78 release: Update splash screen label

2.78 release: Update hash for addons submodule

Fix bpy.data.user_map() ignoring unused datablocks.

Should be backported to 2.78.
Found by Sybren here in studio, thanks!

Fix T35333: Update some WM/UI API functions docstrings.

Based on patch by @codemanx, but with slightly less verbose descriptions.

More detailed behavior etc. rather belongs to doc/python_api/examples/bpy.ops.x.py imho.

Outliner: Report linked datablock edit failure when trying to rename linked data in outliner

Fix T49290: Specific .blend with hair crashes in MacOS 2.78 RC1 on render

The issue was caused by some false-positive empty non-AABB intersection.
Tried to tweak it a bit so it does not record intersection anymore.

Hopefully will work for all platforms. Tested here on iMac and Debian.

Cycles: Fix shading and crashes resulting from constant folding on displacement

Constant folding was removing all nodes connected to the displacement output
if they evaluated to a constant, causing there to be no valid graph for
displacement even when there was displacement to be applied, and sometimes
caused crashes.

Fix T49336: Outliner allows to edit restrict flags for linked objects

Fix T49323: Ineffective bone roll calculation with low rig scale

The code was expecting vector to be normalized, however after
applying inverted object matrix it was possible to have scale
applied to it.

Fix T49327: Cycles OSL Mode: RGB Curves node only outputs gray scale images

To be backported to 2.78 release.

Fix T49296, assert failure in Bevel code.

The mesh interpolation function failed to fill a fractions-of-the-way
array properly when the distances are very small but nonzero.

Cycles: Fix wrong SSS in combination with hair on AVX2 platform

Not sure why exactly that happened, need a closer look.

Cycles: Replace object index hack with actual checks for SD_TRANSFORM_APPLIED

Using ones complement for detecting if transform has been applied was confusing
and led to several bugs. With this proper checks are made.

Also added a few transforms where they were missing, mostly affecting baking
and displacement when `P` is used in the shader (previously `P` was in the
wrong space for these shaders)

Also removed `TIME_INVALID` as this may have resulted in incorrect
transforms in some cases.

Reviewed By: brecht

Differential Revision: https://developer.blender.org/D2192

Fix/Workaround T49297: Crash related to custom data draw (Blender with ASAN)

Root of the issue is that active render index became wrong. This is the actual
thing to be fixed, but as usual this is quite tricky to reproduce. Since such
bad situation might have happened more and fix isn't really difficult or
intruisive let's avoid crash for now.

Can be revisited once we figure out root of the issue.

Nice for 2.78 release.

Fix missing 'prop_required' flags in some ID RNA funcs.

Not critical, but would rather have this in 2.78 (for API doc reasons mostly).

Cycles: Fix bump mapping to use object space when used with true displacement

Bump mapping was happening in world space while displacement happens in object
space, causing shading errors when displacement type was used with bump mapping.

To fix this the proper transforms are added to bump nodes. This is only done
for automatic bump mapping however, to avoid visual changes from other uses of
bump mapping. It would be nice to do this for all bump mapping to be consistent
but that will have to wait till we can break compatibility.

Reviewed By: brecht

Differential Revision: https://developer.blender.org/D2191

Fix T49299: Removing offset object in modifiers doesn't update mesh.

Own fault in new ID management work, thought rebuild the DAG itself was
enough to actually update whole scene, but we actually need to tag datablocks
for update as well, when we change (or remove) one of their ID pointers...

Fix undefined variable on errors in Cycles ctests.

Reviewed By: brecht

Differential Revision: https://developer.blender.org/D2201