Jacques Lucke
793547e7d1
For the most part, this just adds boilerplate code for volume support in geometry nodes: * Add `VolumeComponent` next to `MeshComponent`, etc. * Support `VolumeComponent` in depsgraph object iterator. Furthermore, I added initial volume support in a few nodes: * The Object Info node outputs an object instance when the input is a volume object (that will be the same for mesh objects soonish, to avoid copies). * Support transforming a `VolumeComponent` in the Transform node. * Support the `VolumeComponent` in Join Geometry nodes, but only when just one of the inputs has a volume component for now. Right now, there is no way to create a `VolumeComponent`, because the Object Info node outputs an object instance. The `VolumeComponent` will be necessary for upcoming nodes, which will generate volumes on the fly. Viewport selection does not work correctly with `VolumeComponent`s currently. I don't know why that is. That can be figured out a bit later, once we can actually create new volumes in geometry nodes. Ref T84604. Differential Revision: https://developer.blender.org/D10147