GaussianSplatting Plugin

Launching GaussianSplatting Plugin#

To use the GaussianSplatting plugin, load it via the plugin_load console command or specify the extern_plugin command line option on the application start-up:

Shell commands

-extern_plugin "UnigineGaussianSplatting"

Using GaussianSplatting Plugin#

To add a Gaussian Splatting file to the scene, do the following:

Create a Node Dummy and assign the gaussian property to it (this property is available in the project as a part of the plugin).
In the property parameter Gaussian Ply File, assign the *.ply file that you want to render.
Adjust other parameters, if necessary.

Gaussian Property Parameters#

The Gaussian property contains the following parameters available for adjustment:

Gaussian Ply File	The *.ply file containing 3D Gaussian splatting [3DGS] scene.
Render Order	The order of rendering the 3DGS object. The object with the highest render order will be rendered last (on top of all other 3DGS objects).
Gaussian Render Material	The material used for rendering the gaussians. It has a set of parameters that can be changed to adjust the look of the 3DGS render.
Gaussian Utils Material	Utility material used to initialize Gaussian data and calculate distance from camera for each Gaussian splat.
Sorting Material	Material used for Gaussian sorting based on their distance from the camera.
SH Order	The spherical harmonics order used for rendering the gaussians, which determines the visual fidelity of the gaussians. The SH order equal to zero represents only the perspective-indepent base color, while higher orders encode more persective-dependent details, such as shininess, reflections, etc.
SH Compression	Compressing the spherical harmonics data to improve VRAM usage efficiency.
Sort Interval	Frame interval between sorting gaussian splats. Higher values can be set for a relatively static camera to save performance.
Sort VR Per Eye	Enabling sorting for each eye in VR. If disabled, the Gaussian data will be sorted once and reused for the other eye.

Gaussian Property Parameters#

The gaussian_render.basemat material contains the following parameters available for adjustment:

Sh Only	Using only the spherical harmonics components with the order > 0, i.e. without the base color, to see how they affect the final color.
Debug Cubes	Rendering primitive quads instead of guassians. Intended for debugging purposes.
Culling Frustum Dilation	The scalar factor controlling how much the view frustum is expanded to include 3D Gaussians whose centers lie outside the original frustum but remain visible due to their large covariance.
Culling Alpha Threshold	The alpha threshold for culling gaussians. Gaussians with alpha lower than this value will not be drawn.
Splat Opacity Scale	The gaussian splat opacity (alpha) scale factor. Adjust this value to make the gaussians more/less opaque.
Splat Size Scale	The gaussian splat size scale. Adjust this value to make the gaussians larger/smaller.

_{The information on this page is valid for UNIGINE 2.20 SDK.}

Last update: 30.06.2025

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GaussianSplatting Plugin

In This Article:

See Also#

Launching GaussianSplatting Plugin#

Using GaussianSplatting Plugin#

Gaussian Property Parameters#

Gaussian Property Parameters#