Blender Git Loki

Correct fix for T47047

Caused new 2d views to initialize w/o scrollbars

Fix lock release deadlock when acquiring pass with no data ready yet

There is no reason to do separate image buffer release when there's
found buffer but with empty rects because of the following reasons:

- All the acquire() calls are followed with corresponding release()
calls, regardless of whether image buffer was empty, missing or
whatever.

- It was done wrong -- since lock was passed as NULL, it'll only
de-reference the image buffer itself, this causes following:

* Wrong user counter since there'll subsequent release() call with
the proper lock passed to it.
* Global locks are to be released prior to the spin locks,
and such an extra release violated this rule.

Fix missing render result release when alt-wheeling render pass menu

Fix T47210: Compostiting, Bad AA using distort + undistort nodes

Compositor tried to be too much smart and avoid unneeded re-calculations of
the distortion model, but the way it was implemented is by falling back to
the nearest interpolation first.

We can't really cheat here, better to just look into faster models estimation.

Fix T47217: Crash when tracking specific scene

Fix yet another case broken after glLineWidth() changes

Original patch didn't have any tests or what? =

Cycles: Tweak Cycles samples again.

Now we use 128 for final, and 32 for preview. These values should be a bit
better (power of two, also faster with CMJ).

Cycles: Fix typo in flags check

Cleanup: Remove outdated comment in volume code.

Thanks to jesterking for finding this one.

Add missing line width in the 2d view grid drawing

More missing calls to glLineWidth

Depsgraph: Add missing relations between driver and particle settings

While it's not really working reliably to drive something on runtime
it's handy to have such possibility to tune particle system using
proxies in the scene files.

Just another quick thing for the Nieve project.

Fix glLineWidth state use w/ grid floor and brush

Fix tile highlight corners are too fat since recent changes in glLineWidth policy

Fix Smooth Weight expand logic

Since weight_other is equal to weight_accum_prev[i_other], the original
lines actually are no-op. The visible effect is that when smoothing just
two vertices with weights 1 and 0, the expand value has no effect until
it reaches exactly 1. This change makes it gradual.

Docs: minor edits to code comments

Prevent accidental fall-through in switch

Cleanup: style

Correct error in recent vector transform commit

Cycles: Make Clang 3.6 happy with const debug flags reference

For some reason it did not like the explicit const qualifier for a
custom type.