Geometry Nodes: Field to Grid Node

The purpose of this node is to create a grid with new voxel values on
the same grid topology as an existing grid. The new values are the
result of field evaluation. Multiple grids can be created at the same
time, so that intermediate results used for multiple grids can be
efficiently reused during evaluation. This is more efficient than the
"Volume Cube" node, for instance, because the output grid shares the
sparseness of the input topology grid.

Pull Request: https://projects.blender.org/blender/blender/pulls/147074

scripts/startup/bl_ui/node_add_menu_geometry.py

@@ -942,6 +942,7 @@ class NODE_MT_gn_volume_operations_base(node_add_menu.NodeMenu):
         if context.preferences.experimental.use_new_volume_nodes:
             self.node_operator(layout, "GeometryNodeGridToMesh")
             self.node_operator(layout, "GeometryNodeSDFGridBoolean")
+            self.node_operator(layout, "GeometryNodeFieldToGrid")
 
         self.draw_assets_for_catalog(layout, self.menu_path)