Blender Git Loki

Merge branch 'master' into openvdb_smoke

Fix compile issue when WITH_OPENVDB

Cleanup: use madd_v3_v3fl to avoid unnecessary steps and local variable.

Fix grid not being in the proper place (transform).

Basically the smoke simulator uses the MAC grid approach meaning that
the fields (like density, heat...) are cell centered. On the other hand
VDB uses a node center storage; this implies that we have to offset the
position of the grid by half a voxel in each direction.

Cycles: fix typos (crashers) in vector grid allocation and sampling
code.

Cleanup: unnecessary includes.

Fix check to see if a frame is out of range.

Was doing AND instead of OR...

Add OPENVDB_USE_BLOSC definition.

Due to a bug in OpenVDB we have to set this. Though this is fixed in the
current development version, and once the next stable release is out
those defines will be removed.

Simplify matrix computation.

Remove dead code.

Import grids for playback now works.

It is still commented out due to the need of a good cache (reading)
system.

Fix typos in metadata reading.

Set vector type when converting a grid.

Set caches' reader and writer to NULL when reading a file.

Fix grids' names mismatch when reading a file.

Cleanup/fix: put 'using namespace' inside ifdef block.

Wrap volume sampling call in a macro.

Merge branch 'master' into openvdb_smoke

Get rid of FluidDomainDescription struct.

Move some files and functions around.