Spline
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Changelog

Introducing Spline V2

Introducing Spline V2, a complete rebuild of our 3d editor for the agentic era.

Changes

AI agent & generation

  • MCP access - External agents (Claude Code, Cursor, etc.) drive the 3D editor through MCP tools.
  • AI Chat agent - Generate or edit 3d scenes using AI agents within the 3D editor. Generated scenes are fully editable.
  • Deep AI scene editing - The agent can create and edit everything: objects, materials, lights, cameras, booleans, particles, cloners, paths, sky, variables, and full interactivity (events, tweens, states), as well as custom code-driven interactions.
  • AI scene composition - The agent can lay out structured, multi-object scenes, use procedural generators, and make changes scene-wide.
  • Preview tab - A new play mode for the 3d scene and any html or code interaction.
  • Code tab - Spline now supports HTML/JS code that can access to the scene's data and modify it, or create new procedural data during runtime. Agent generates HTML/JS layered over the 3d canvas; motion, interactivity or games can be code-driven by default.
  • Version history - Every AI prompt saves a Version History entry.
  • AI image & 3D AI gen tools - Chat generates textures/images and 3D models in the background while continuing work.

Rendering & engine

  • WebGPU renderer - New TSL-based WebGPU backend by the default, WebGL as fallback.
  • PBR material support - Image-based lighting (IBL), new map channels, BRDF, glTF interchange, and an HDR color pipeline.
  • Screen-space reflections - New reflection layer supporting SSR (WebGPU only), plus a Surface Shape/Mirror toggle. Mirror mode enables true planar mirror reflections with optional blur.
  • Physical Sky - Procedural sky with its own dome light, Light Intensity dial.
  • HDRi Sky - Support for .hdr as sky box with IBL, Show-BG switch keeping lighting only.
  • Height fog - Realistic camera-angle-dependent fog with Height and Both modes alongside classic depth fog.
  • Shape blend overhaul - New 512³ resolution, faster compute, ability to use any mesh as a shape blend.
  • Dust material layer - Procedural dust/snow accumulation shading on upward-facing surfaces.
  • Hair System - GPU accelerated hair strand simulation for growing hair from scalp shapes or any mesh, with lighting, shadows, wind, clumping.
  • Faster boolean operations - Roughly 4× faster overall, fixing subdiv baking and degenerate-geometry cases.
  • GPU instancing - Cloner now uses GPU mesh instancing; shared geometry+material pairs can get auto-collapsed into single instanced draws.
  • Vertex-color material layer - New material layer that imports and renders glTF per-vertex colors.
  • Physics upgrade - Improved physical character-controller contacts; dragged rigid bodies now drive kinematics properly.
  • Export size optimization - Smaller base runtime size, with adaptable size based on features, improving loading times.
  • Editor chrome redesign - Redesigned top nav (tabs left, toolbar centered, Preview = Play), Preview/Edit/Code stage tabs, refreshed light/dark themes with monochrome accent.
  • Performance overhaul - Idle-leak fixes, shadow caching, faster AO, faster selection, batched subdiv WASM, optimized path geometry, optimized soft shadows, faster tessellation.

Modeling & tools

  • Bevel/Chamfer tool - New mesh-editing bevel with round mode, segments control, floating toolbar with live rebuild, and smarter edge-loop selection.
  • Texture projection axes - X/Y/Z axis control for cylindrical and spherical texture projection.
  • Camera UX - Smooth perspective↔orthographic transitions.
  • Outliner type filter - Filter the outliner by object type.
  • Sculpt & mesh upgrades - Brush symmetry for sculpting plus UV support for sculpted and editable meshes.
  • New-file defaults refresh - Fresh files open in perspective with an offset camera, HDRi sky, soft shadows, darker default colors, no seed rectangle.
  • Import fidelity - GLB/glTF imports keep faithful PBR materials, intern textures as shared assets, accept separated assets and .hdr/.exr, land normalized to height 500.

Dashboard & app

  • Home redesign - New Home with a prompt hero, later a recents list plus bottom composer; prompts hand off directly into the editors' chat.
  • Workspace search - Sidebar-invoked modal searching files across the workspace.
  • Files & templates redesign - Reworked files list view, templates page with inline tabs, sidebar My-Files folders with paging and newest-first ordering.
  • New pricing plans - Restructured to Hobby/Pro/Max with per-plan credit selection, replacing the AI addon.

Deprecated

  • AI Style Transfer is now deprecated.
  • UI Scenes is deprecated in favor of the new html approach for UI generation. Files with existing UI scenes will load fine (and faster due to Hana’s replacing old UI renderer).
  • Frame Mode is deprecated, however the in-editor frame overlay still work as before.
  • Playmode is now Preview Mode.