SVT Helper

This plugin provides two main helper blueprints to help you control and set up static and animated sparse volume textures (SVT) with Unreal’s Volumetric Clouds and Unreal’s Volumetric Fog.

These two blueprints offer a unified solution for editor, sequencer, and game.

Links: Feature overview video | Volumetric Clouds set up | Volumetric Fog set up | Documentation.

Only compatible with Unreal Engine 5.4 and above. (Although the plugin also works in 5.3, there’s an Epic issue in 5.3 that prevents you from saving your level in some conditions with SVT controllers.)

The Volumetric Fog blueprint is a simple drag and drop solution that allows you to have as many SVTs in your level as you want. Even though Unreal Engine doesn’t allow you to play SVT animations in the editor, this plugin makes it possible thanks to the accompanying custom C++ class that ticks in editor. (Disclaimer: Unreal’s Volumetric Fog is a low-resolution solution associated with lots of drawbacks, I would probably recommend not using it if possible and use Heterogeneous Volumes instead.)

The Volumetric Cloud blueprint lets you control up to five static or animated SVTs in the provided cloud material. These five user-controlled cloud SVTs are controlled in the editor and can be individually translated/scaled/rotated with a diamond gizmo. These custom clouds can be mixed with procedural clouds in the material (not implemented in the plugin). Please note that Unreal Engine only supports a single Volumetric Cloud entity per level. Custom cloud animations can be played in the editor (which isn’t natively supported by Unreal), controlled from sequencer, and played in game.

• Sub-frame interpolation is supported on both Volumetric Fog and Volumetric Cloud for cinematic quality.
• Level of Detail for both streaming and display is supported on both methods to help improve framerate for real-time applications.