This is an example of Godot's volumetric fog capabilities
with the Vulkan renderer.
Showcased features are:
- Positive/negative density volumes that affect albedo (incoming light)
and emission.
- Box/ellipsoid shapes, height falloff, and density modulation using a
3D texture.
- Temporal reprojection for greater stability and avoiding flickering.
- The difference is demonstrated with a moving fog volume.
- Global density adjustment. With FogVolume nodes that have a
positive density, it's possible to apply volumetric fog only in
specific areas.
Hugo Locurcio