Blender Git Loki

Cycles: Enable unaligned traversal for SSS and volume functions

Currently this traversal functions will always think there are unaligned
nodes in the scene and check visibility flags. This might not be fully
ideal, but on another hand adding more traversal functions might:

(a) Bump stack memory size on Maxwell GPUs (see the discussion on the
Cycles mailing list)

(b) Not give real speed advantages.

So for now let's use simpler way and gather some benchmarks.

Cycles: Revert unwanted debug-only change

Merge remote-tracking branch 'origin/master' into cycles_bvh

Cycles: Fix over-allocation of storage for unaligned nodes

Rename AbcHairReader -> AbcCurveReader.

Add static qualifier.

Don't call BKE_nurb_knot_calc_u on curve paths.

Use a DerivedMesh to stream curve data as well.

Simplifies the code a bit.

Cycles: Fix shadow rays were ignoring unaligned nodes

A residue from development.

Merge remote-tracking branch 'origin/master' into soc-2016-uv_tools

Cycles: Small optimization of unaligned heuristic

Cycles: Fix node refitting

It'll fall back to identity transform since otherwise it gets
too expensive to re-calculate all heuristics.

Reveal hidden UVs for all unwrap modes

Slight cleanup.

Pass compound prop to write_extra_uvs instead of the schema.

Fix crash accessing invalid IPolyMeshSchema.

Add Alembic to install_deps.sh.

Cycles: Fix crash when true displacement is used

Not fastest code from device_update() timing point of view, but
keeps memory usage same small as final renders.

At this point we are back to full test suit pass when QBVH is used.

Make unwrap ops reveal hidden UVs since they're taken into account anyway

Cycles: Adopt all QBVH traversal to unaligned nodes