engine v4.4.1

Engine v4.4.1

May 16, 2026

A patch in the Solid line.

what's new

Savi places things on top of anything now — models, primitives, sprites, custom geometry, or text, she knows the size and lands the placement first try.
Custom uploaded models that disappeared after the animation migration are back — your characters keep their model and animations switch correctly.
Non-square images render on walls and floors again — photos, screenshots, and posters no longer come out as blank white spots.

›technical notes

White-floor fix on chat-attachment surfaces (#6511): new OversizedPrimitiveConsumer routes entities whose loaded textures don't fit the texture-array profile (512×512 desktop / 256×256 mobile) to a dedicated InstancedMesh with a stock MeshStandardNodeMaterial. mapRepeat / mapOffset packed into the pool key so seamless-tile walls tile correctly. scene.ts split into per-consumer modules (water / effect / batch / oversized) behind a ConsumerDispatcher; 575 → 423 lines, @ts-nocheck dropped.
Renderer unification (#6506): deleted legacy engine/render/ (~28k LOC of the @ts-nocheck WebGL main-thread renderer); renamed engine/render_v2/ → engine/renderer/. Identifier sweep: RendererFeatureV2 → RendererFeature, worker-renderer-v2.mjs → worker-renderer.mjs, [render_v2] → [render]. Zero render_v2 references anywhere. Removed the broken playground/ dev harness.
New TransformMiddleware (engine/renderer/transform/) owns pos/rot/scale smoothing in one place. ScaleSmoother parallels the pos/rot smoother (exp-damp, snaps on >2× axis-ratio change); scale interpolation is opt-in via the existing draw/interpolation component, and sticky-disable propagates so "disabled" keeps all three channels snapped.

Auto-collider rebuilds when model bounds arrive (#6507). The autoCollider: { kind: "model", modelId } marker was never acted on — clamped colliders stayed at the 0.5m placeholder forever. Now subscribes to the next BoundsRegistry.setBounds on both planes; second-pass applyPhysicsSpec emits real half-extents. WeakMap dedup; teardown / despawn / model swap disposes the listener. Fixes resim spinning at 85-100/s on spawn into a physics: "static" clamped-collider model.

setProperty('animated3DCharacter', false) no longer wipes DrawModel on entities whose model was authored independently (#6508) — tear-down now gated on DrawAnimated3DCharacter actually being present. Restores the 4.3.0 compat promise.
model.animation updates propagate on every write, not just the first (#6508). derive-appearance.syncAnimationForModel no longer bails when a DrawMixer is already present — upserts _default, preserves authored channels. Per-tick applyClip with unchanged clip/speed/loop skips the ECS write.
api.getWorldBoundsBox() now returns WorldBoundsBox ({ min, max, size, center }) for DrawPrimitive (tube uses point-cloud min/max instead of bottom-center), BespokeGeometry / DrawMesh-only models, DrawSprite (anchor-aware, billboard-mode-aware: full → sphere, yaw → cylinder in xz, none → flat quad), and DrawText (Geist Pixel metrics: charWidth ≈ 0.4 × size) (#6505). Internal OBB→AABB projection uses full local center so non-bottom-centered bespoke meshes project correctly.

what's new

Savi places things on top of anything now — models, primitives, sprites, custom geometry, or text, she knows the size and lands the placement first try.
Custom uploaded models that disappeared after the animation migration are back — your characters keep their model and animations switch correctly.
Non-square images render on walls and floors again — photos, screenshots, and posters no longer come out as blank white spots.