Add two common building blocks for volume-grid workflows.
- **Voxelize** turns all active tiles into fully dense voxels. For fog
volumes, this will mean the "inside" sparse tiles will become
individually adjustable voxel values.
- **Prune** is the opposite action as voxelize. It can be important for
certain workflows when large regions of constant values are created.
The node can collapsed those regions into more efficient tiles or
inner nodes. There are a few modes which are each useful for
different use cases.
Pull Request: https://projects.blender.org/blender/blender/pulls/147148
d3278249a8