Unified gsplat architecture is available to GSplatComponent

[mvaligursky]

A public way to utilize unified gsplat architecture, using additiona unified component property:

entity.addComponent('gsplat', {
    asset: assets.logo,
    unified: true
});

Note that this property can be changed only when the splat is disabled (it's internal data not created) at the moment, and ignored with a warning otherwise.

Details:

• internal GSplatDirector class, managing instancing of GSplatManager for cameras / layers that have the gsplat component
• Layers stores array of GSplatPlacement (equivanent to MeshInstance) - this is all private, used by GSplatDirector to manage what it needs to render
• added an example to show / test rendering from multiple cameras.

Other changes:

• dynamic sizing for internal buffers. Before, buffers were sized for all gaussian splats. Now they're dynamically adjusted to fit splats based on LOD, using significantly less memory for large scenes with LOD.
• When Texture.upload() is manually called, the upload takes place immediately on WebGL now, to match WebGPU. This allows the upload buffer to be immediately reused on the CPU, instead of being required to be untouched till the rendering uploads the texture. This also avoids uploading textures in the middle of the render passes.

Screen.Recording.2025-07-25.at.14.45.53.mov

[Copilot]

Pull Request Overview

This PR introduces unified GSplat architecture that allows multiple GSplat components to be efficiently rendered together using a centralized director system. The new architecture provides better memory management through dynamic buffer sizing and enables multi-camera rendering scenarios.

Key changes:

• Adds a unified property to GSplatComponent that enables the new unified rendering architecture
• Introduces a GSplatDirector class that manages GSplatManager instances per camera and layer combination
• Replaces fixed-size buffers with dynamic sizing based on LOD, reducing memory usage for large scenes

Reviewed Changes

Copilot reviewed 23 out of 23 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
src/framework/components/gsplat/component.js	Adds unified property and GSplatPlacement support for new rendering architecture
src/scene/renderer/renderer.js	Integrates GSplatDirector into the main renderer
src/scene/layer.js	Adds GSplatPlacement management to layers
src/scene/gsplat/unified/gsplat-director.js	New director class managing GSplatManager instances per camera/layer
src/scene/gsplat/unified/gsplat-manager.js	Updates manager to work with placement-based architecture
examples/src/examples/gaussian-splatting/multi-view.example.mjs	New example demonstrating unified architecture with multiple cameras