In Blender 5.0, Geometry Nodes support for volumetric data will be significantly better.

Blender's platform is a leading open-source 3D creation suite, offering insights into 3D modeling, animation, and rendering. Through tutorials, documentation, and community forums, Blender provides insights into creating stunning visual effects, animations, and interactive experiences. Artists and designers can learn about Blender's powerful features, such as sculpting tools, rigging, and physics simulations, to bring their creative visions to life.

Blender

Blender 5.0 introduces comprehensive volume grid support in Geometry Nodes, enabling direct manipulation of volumetric data through a new grid data type. Built on OpenVDB, the system efficiently stores sparse and dense voxel data using tiles and active status flags. Users can now perform fluid simulations, SDF modeling, and scientific data visualization through nodes that handle field-to-grid conversion, grid sampling, boolean operations, and vector calculus. The implementation includes grid transforms for mapping index-space to object-space, integration with the field system for procedural evaluation, and specialized SDF filters for smooth boolean operations.

Volume Grids in Geometry Nodes — Blender Developers Blog