¶ Additive Lighting
The Volinga plugin for UE enables Radiance Field actors to interact with scene lighting. This interaction is known as "additive lighting" because it allows light sources from UE to affect 3DGS assets while preserving the original lighting captured during the 3D asset creation.
By default, additive lighting is disabled. You can enable it by clicking on the Volinga icon in the top bar.
Additionally, several other parameters can be modified using the three dots menu next to that button:
- Normal generation method: We offer 2 different methods. Estimated normals and Inversed estimated normals.
- Proxy-mesh based normals method: This method uses the normals of a proxy mesh to cast shadows for the gaussians. Consult this tutorial to learn how to use it: Tutorial - Proxy Mesh Based Normals.
- Ambient light: Controls how much of the existing color in the Radiance Fields actor acts as an emissive color. A value of 0 means no emissive color, while 1 means fully emissive color.
- Lower and Upper alpha thresholds: Allow you to filter out gaussians below or above specified limits. These settings are particularly useful for removing black gaussians at the borders of actors, especially in outdoor captures.
- Min Screen Area Threshold: Changes the minimum radius a gaussian can have on the final image (in pixels). For instance, when set to one, gaussians size in the projected image will be enlarge if it is smaller than one pixel. Usually, setting it to 0 improve performance and while not affecting quality.
- Min Opacity Threshold: Minimum opacity that a gaussian should have to be rendered. Increasing it, will filter our less opaque gaussians, making performance better, but it can lead to artifacts.
¶ Render Settings
Render Mode:
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Quality Preferred: Optimizes rendering for the highest visual fidelity, prioritizing detail and accuracy over frame rate.
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Performance Preferred: Optimizes rendering for higher frame rates, prioritizing speed over visual detail, suitable for real-time previews or less powerful hardware.
Render Pass Mode:
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Base Pass: Renders the main opaque geometry, capturing the primary visual elements of the scene.
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Translucency Pass: Renders transparent or semi-transparent objects, such as glass, allowing proper blending with the scene.
Cull Volume Settings:
- Freeze Cull Volumes: Keeps the current culling volumes static, preventing dynamic updates during playback or camera movement.Useful for consistent rendering and performance optimization.
¶ License Settings
You can open the Volinga License Manager by clicking the “Open License Panel” button in the dropdown menu.
For a complete step-by-step guide on using the licensing system, see:
Tutorial - License System
More details about how licensing works are available here:
How Licensing Works
⚠️ Note (Volinga Plugin v0.7.x):
This licensing system is only available in plugin version v0.8.x.
If you are using a different version, please refer to the Tutorials section.
¶ Considerations
These settings can also be accessed through the project settings (Edit > Project Settings > Volinga).
Use settings from the Volinga toolbar dropdown. Changing them in Project Settings may not sync correctly and could cause errors