PlayCanvas Releases SuperSplat 3.0 for Editing Larger 3D Captures

Performance

WebGPU gives browser apps access to the graphics processor for both drawing and computation. SuperSplat 3.0 moves more of its rendering and editing work there, while avoiding full copies of the scene in JavaScript memory.

In PlayCanvas's test of a 4.4 million-splat scene, peak JavaScript memory with the scene loaded and idle fell from 1,557 MB in version 2.x to 105 MB in 3.0.

A new Stochastic Alpha mode also changes how heavy scenes are drawn while the camera moves. It skips the costly step of sorting the splats, then draws a fully sorted frame when movement stops. PlayCanvas demonstrates it in a botanical garden scan with about 20 million Gaussians.

Editing Tools

The new Sphere Brush lets creators paint a selection onto a surface in 3D. It follows the depth of the object under the stroke, helping select that object without also catching the scene behind it.

Color adjustments can now apply to just that selection. Creators can change its tint, temperature, saturation, brightness, or transparency, preview the result, and apply or reset it. With nothing selected, the adjustments affect the whole splat.

A new Appearance panel brings together controls for showing the individual Gaussians, their centers, and selection outlines. These editing overlays start off hidden, leaving the rendered scene visible when a capture first opens.

Availability

SuperSplat 3.0 requires WebGPU and hardware acceleration. PlayCanvas lists current Chrome and Edge, Safari 26 or later, and Firefox where WebGPU is enabled. Projects from version 2.x still open, but projects saved in 3.0 need version 3.0 or later.

The update is available now at superspl.at/editor (opens in a new tab). Creators can drop in an existing capture and use the new tools directly in the browser.