Blender Git Loki

Allow bg-image rotation for camera views

Cleanup: comments, style

Tidy up the user interface for depth of field based on feedback by
NudelZ on irc, thanks!

Use same rgb -> greyscale for BLI_math as imbuf

Change coefficients to 4 digit precision only.

Need to match convention and sum up to 1.0 (previous set had a minor
10^(-10) overflow) Thanks to Campbell for taking notice.

Make sure matcap icons are within range.

Basically out of range could happen when opening files made in 2.72 when
the new icons for texture painting were added. Apparently some more
caution is needed here.

Mitigate T44035: Proportional editing lag

Calculating connected data can be slow,
it still lags with heavy meshes but perform some optimizations (nearly twice as fast)

Fix T43926: Volume scatter: intersecting objects GPU rendering artifacts
Fix T44007: Cycles Volumetrics: block artifacts with overlapping volumes

The issue was caused by uninitialized parameters of some closures, which
lead to unpredictable behavior of shader_merge_closures().

Fix wrong sizeof() in new ghash hashing helpers code.

Spotted by Coverity.

OSX: fix 1 leak ( found and fixed by marcclintdion ) and 1 possible leak in dragndrop, backport to 2.74

BGE: New hysteresis offset to improve LOD level transitions

This change introduces a new hysteresis parameter that it will be added
or subtracted to/from the LOD distance to avoid popping when a LOD
object moves close to the LOD transition continuously.

Then, we have the following:

- a new LOD Hysteresis setting per scene (default 10%) which is located
in Scene context --> Level of Detail panel. This scene parameter also
will active/deactive the scene hysteresis.
- and a new LOD Hysteresis setting per object (default 10%) which is
located in Object context --> Levels of Detail panel. The LOD hysteresis
setting per object (if active) will overwrite the hysteresis setting per
scene value.

For the new blends: the hysteresis setting per scene would be active by
default and the per object would be inactive by default.
For the old blends: both hysteresis settings (per scene and per object)
would be inactive by default. A quick way to take advantage of this
feature for old blends would be to activate the hysteresis parameter in
the scene context -> Level of Detail panel

Reviewers: campbellbarton, kupoman, moguri

Reviewed By: kupoman, moguri

Subscribers: nonamejuju, lordodin

Differential Revision: https://developer.blender.org/D957

BGE: Add physics constraints replication

This patch will add a physics constraints replication for group instances
(dupli group).
It also fix crashing when when a group instance is made from a linked
group instance and both are on the active layer.

Initial patch T31443 from moerdn (Martin Sell).

Reviewers: lordloki, sergof, moguri, sybren

Reviewed By: moguri, sybren

Differential Revision: https://developer.blender.org/D658

Revert part of D1074 related to acceleration taked into account.
It has been reverted because it was affecting obstacle avoidance
(T44041).

This fix should be backported to 2.74

Cleanup: instantiate arg once in context macro

Cleanup: minor edits to project generators

OSX/GHOST: need one more release in error case

Fix T44065: fixed vehicle constraint

Commit ffee7f1a58a18bc08add94176ddffe29809139a6 broke vehicle constraints; this fixes that.

Cleanup: constify view3d/camera

Cleanup: constify scene/modifiers

Cleanup: use tabs