Files
test/source/blender/blenkernel
Jacques Lucke 444e148976 Geometry Nodes: support baking volume geometry
This adds support for baking the volume component of a geometry. Previously,
volumes were just removed in the simulation and bake node.

On disk, each volume geometry is written to a separate `.vdb` file that is stored in
the bakes `blobs` directory and referenced from the corresponding meta `.json` file.

Technically, it would also be easy to write the volume data to the same `.blob`
files that we also write e.g. mesh attributes to. However, since `.vdb` is a well
known file format, it seems reasonable to just store it as a separate file. The
serialization code doesn't really care whether it's a separate file or embedded into
a bigger file, so this decision could be made at a higher level.

Just like with other geometry types, materials are preserved. Just note that when
using the written stand-alone .vdb files, materials are not preserved.

Currently, volume grids are not deduplicated on disk. This could be added in the
future if necessary.

Pull Request: https://projects.blender.org/blender/blender/pulls/117781
2024-02-03 18:13:34 +01:00
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