Deformable Triangle Splatting: Flexible Primitives for Real-Time Radiance Field Rendering

Deformable Triangle Splatting adds a new primitive to the radiance-field toolbox: a triangle whose edges can be locally displaced by learnable scalars. Instead of relying on convex disks or flat triangles, each primitive can form non-convex silhouettes, which is a better fit for curved details, cutouts, and other shapes that usually need a lot of extra splats to approximate.

The rendering path stays differentiable and view-consistent by working in barycentric space. A winding-number test determines whether a pixel falls inside the deformed boundary, while a window function with learnable sharpness and corner-smoothness parameters controls the opacity falloff toward the edge. Each primitive also carries a scalar opacity, which helps blend the transition from interior to boundary without giving up the efficiency benefits of 2D primitives.

For game and realtime rendering developers, the practical angle is straightforward: fewer primitives for the same shape complexity can mean better quality at a similar cost, or similar quality with less overdraw and scene complexity. The method is positioned as an alternative to recent non-volumetric approaches, and the reported validation across real-world scenes points to stronger visual fidelity and versatility while keeping rendering efficiency competitive.

The work was submitted on 24 July 2026 by Oriol Jiménez-Ayguadé and Antonio Agudo. It sits at the intersection of computer vision and graphics, but the implications are familiar to engine and rendering teams: better primitive design can translate directly into cleaner...