Blender Git Commits

PyDriver support for all RNA property types

Support for driver variables that don't resolve to numbers, eg:
objects, bones, curves... etc.

Without this, Python expressions to access this data needed to use an absolute path from `bpy.data`,
however this is inconvenient, breaks easily (based on naming) and wouldn't set the dependencies correctly.

Cycles: Fix wrong camera in volume check when domain is only visible to camera rays

Cycles: Fix regression caused by recent camera-in-volume commit

Stupid me forgot that we don't have stop-element in the stack yet.

Cycles: Fix regular BVH not having proper visibility flags

This was caused by recent threading commit. Now because of all children
are set when they're ready need to explicitly update all parent's visibility.

Fix T48045: Freestyle ID user decrement error.

This fixes reported issue, but there could be more of those hidden in Freestyle code,
it did not handle user refcount at all (and the fact it by-passes BKE in some places
for efficiency does not help here).

Note that this should be relatively harmless, since freestyle uses own Main during
render, so everything is cleaned up in the end in any case... But better try to
handle IDs correctly here too. :)

Update hash for an OBJ unit test

Cycles: Make spatial split BVH multi-threaded

The title actually covers it all, This commit exploits all the work
being done in previous changes to make it possible to build spatial
splits in threads.

Works quite nicely, but has a downside of some extra memory usage.
In practice it doesn't seem to be a huge problem and that we can
always look into later if it becomes a real showstopper.

In practice it shows some nice speedup:

- BMW27 scene takes 3 now (used to be 4)
- Agent shot takes 5 sec (used to be 80)

Such non-linear speedup is most likely coming from much less amount
of heap re-allocations. A a downside, there's a bit of extra memory
used by BVH arrays. From the tests amount of extra memory is below
0.001% so far, so it's not that bad at all.

Reviewers: brecht, juicyfruit, dingto, lukasstockner97

Differential Revision: https://developer.blender.org/D1820

Cycles: Solve possible issues with running out of stack memory allocator

Policy here is a bit more complicated, if tree becomes too deep we're
forced to create a leaf node and size of that leaf wouldn't be so well
predicted, which means it's quite tricky to use single stack array for
that.

Made it more official feature that StackAllocator will fall-back to
heap when running out of stack memory.

It's still much better than always using heap allocator.

Cycles: Log overall time spent on building object's BVH

We had per-tree statistics already, but it's a bit tricky to see overall
time because trees could be building in parallel.

In fact, we can now print statistics for any TaskPool.

Cycles: Log allocation slop factor for BVH arrays

Currently they're staying at 1 (actual size over capacity), but we
will be changing it quite soon in order to avoid having too much
memory re-allocation happening at a BVH build time and will be
playing with different policies for that.

Fix missing ID_SO sound type in outliner's ID types.

Note that we may want to review that some day, we have quite a bit of ID types here that are
'blend file' view only, might be worth splitting the check based on this.

Cycles: Tweak to stack allocator used by BVH builder

In some files stack memory was overruning the pre-allocated stack.

Perhaps we should fall-back to a hep-allocated stack so release builds
don't crash in works case but just becoming slower.

Smoke: Don't use `min` as an uniform name

This is an attempt to fix report T47991.

Cycles: Make curves modified by a taper object with modifier considered a deform modified

That might consider a bit more objects to be considered deform modified,
but it covers common case of using taper object without require of doing
recursive checks.

In worst case it'll be just some extra synchronization time, no render
time difference will happen for false-positive because of extra checks
happening in Cycles.

Fix T48002: Wrong behavior with "RGB to Intensity" in Image textures

There was some extra linearization happening in such cases.

Fix curve editmode adding 3D primitives w/ 2D curves

Fix curve adding 3D nurbs when 2D is set

Ctrl-LMB ignored 2D constraint

Fix curve hide keeping spline active

Fix curve, missing update on Ctrl-LMB

Fix curve add-vertex w/ 2D curves

Project the point onto the 2d place where possible.